wiki/node_modules/@intlify/core-base/dist/core-base.esm-browser.js

/*!
  * core-base v11.1.3
  * (c) 2025 kazuya kawaguchi
  * Released under the MIT License.
  */
/**
 * Original Utilities
 * written by kazuya kawaguchi
 */
const inBrowser = typeof window !== 'undefined';
let mark;
let measure;
{
    const perf = inBrowser && window.performance;
    if (perf &&
        perf.mark &&
        perf.measure &&
        perf.clearMarks &&
        // @ts-ignore browser compat
        perf.clearMeasures) {
        mark = (tag) => {
            perf.mark(tag);
        };
        measure = (name, startTag, endTag) => {
            perf.measure(name, startTag, endTag);
            perf.clearMarks(startTag);
            perf.clearMarks(endTag);
        };
    }
}
const RE_ARGS = /\{([0-9a-zA-Z]+)\}/g;
/* eslint-disable */
function format$1(message, ...args) {
    if (args.length === 1 && isObject(args[0])) {
        args = args[0];
    }
    if (!args || !args.hasOwnProperty) {
        args = {};
    }
    return message.replace(RE_ARGS, (match, identifier) => {
        return args.hasOwnProperty(identifier) ? args[identifier] : '';
    });
}
const generateFormatCacheKey = (locale, key, source) => friendlyJSONstringify({ l: locale, k: key, s: source });
const friendlyJSONstringify = (json) => JSON.stringify(json)
    .replace(/\u2028/g, '\\u2028')
    .replace(/\u2029/g, '\\u2029')
    .replace(/\u0027/g, '\\u0027');
const isNumber = (val) => typeof val === 'number' && isFinite(val);
const isDate = (val) => toTypeString(val) === '[object Date]';
const isRegExp = (val) => toTypeString(val) === '[object RegExp]';
const isEmptyObject = (val) => isPlainObject(val) && Object.keys(val).length === 0;
const assign = Object.assign;
const _create = Object.create;
const create = (obj = null) => _create(obj);
function escapeHtml(rawText) {
    return rawText
        .replace(/</g, '&lt;')
        .replace(/>/g, '&gt;')
        .replace(/"/g, '&quot;')
        .replace(/'/g, '&apos;');
}
const hasOwnProperty = Object.prototype.hasOwnProperty;
function hasOwn(obj, key) {
    return hasOwnProperty.call(obj, key);
}
/* eslint-enable */
/**
 * Useful Utilities By Evan you
 * Modified by kazuya kawaguchi
 * MIT License
 * https://github.com/vuejs/vue-next/blob/master/packages/shared/src/index.ts
 * https://github.com/vuejs/vue-next/blob/master/packages/shared/src/codeframe.ts
 */
const isArray = Array.isArray;
const isFunction = (val) => typeof val === 'function';
const isString = (val) => typeof val === 'string';
const isBoolean = (val) => typeof val === 'boolean';
// eslint-disable-next-line @typescript-eslint/no-explicit-any
const isObject = (val) => val !== null && typeof val === 'object';
// eslint-disable-next-line @typescript-eslint/no-explicit-any
const isPromise = (val) => {
    return isObject(val) && isFunction(val.then) && isFunction(val.catch);
};
const objectToString = Object.prototype.toString;
const toTypeString = (value) => objectToString.call(value);
const isPlainObject = (val) => toTypeString(val) === '[object Object]';
// for converting list and named values to displayed strings.
const toDisplayString = (val) => {
    return val == null
        ? ''
        : isArray(val) || (isPlainObject(val) && val.toString === objectToString)
            ? JSON.stringify(val, null, 2)
            : String(val);
};
function join(items, separator = '') {
    return items.reduce((str, item, index) => (index === 0 ? str + item : str + separator + item), '');
}
const RANGE = 2;
function generateCodeFrame(source, start = 0, end = source.length) {
    const lines = source.split(/\r?\n/);
    let count = 0;
    const res = [];
    for (let i = 0; i < lines.length; i++) {
        count += lines[i].length + 1;
        if (count >= start) {
            for (let j = i - RANGE; j <= i + RANGE || end > count; j++) {
                if (j < 0 || j >= lines.length)
                    continue;
                const line = j + 1;
                res.push(`${line}${' '.repeat(3 - String(line).length)}|  ${lines[j]}`);
                const lineLength = lines[j].length;
                if (j === i) {
                    // push underline
                    const pad = start - (count - lineLength) + 1;
                    const length = Math.max(1, end > count ? lineLength - pad : end - start);
                    res.push(`   |  ` + ' '.repeat(pad) + '^'.repeat(length));
                }
                else if (j > i) {
                    if (end > count) {
                        const length = Math.max(Math.min(end - count, lineLength), 1);
                        res.push(`   |  ` + '^'.repeat(length));
                    }
                    count += lineLength + 1;
                }
            }
            break;
        }
    }
    return res.join('\n');
}

function warn(msg, err) {
    if (typeof console !== 'undefined') {
        console.warn(`[intlify] ` + msg);
        /* istanbul ignore if */
        if (err) {
            console.warn(err.stack);
        }
    }
}
const hasWarned = {};
function warnOnce(msg) {
    if (!hasWarned[msg]) {
        hasWarned[msg] = true;
        warn(msg);
    }
}

function createPosition(line, column, offset) {
    return { line, column, offset };
}
function createLocation(start, end, source) {
    const loc = { start, end };
    return loc;
}

const CompileErrorCodes = {
    // tokenizer error codes
    EXPECTED_TOKEN: 1,
    INVALID_TOKEN_IN_PLACEHOLDER: 2,
    UNTERMINATED_SINGLE_QUOTE_IN_PLACEHOLDER: 3,
    UNKNOWN_ESCAPE_SEQUENCE: 4,
    INVALID_UNICODE_ESCAPE_SEQUENCE: 5,
    UNBALANCED_CLOSING_BRACE: 6,
    UNTERMINATED_CLOSING_BRACE: 7,
    EMPTY_PLACEHOLDER: 8,
    NOT_ALLOW_NEST_PLACEHOLDER: 9,
    INVALID_LINKED_FORMAT: 10,
    // parser error codes
    MUST_HAVE_MESSAGES_IN_PLURAL: 11,
    UNEXPECTED_EMPTY_LINKED_MODIFIER: 12,
    UNEXPECTED_EMPTY_LINKED_KEY: 13,
    UNEXPECTED_LEXICAL_ANALYSIS: 14,
    // generator error codes
    UNHANDLED_CODEGEN_NODE_TYPE: 15,
    // minifier error codes
    UNHANDLED_MINIFIER_NODE_TYPE: 16
};
// Special value for higher-order compilers to pick up the last code
// to avoid collision of error codes.
// This should always be kept as the last item.
const COMPILE_ERROR_CODES_EXTEND_POINT = 17;
/** @internal */
const errorMessages$1 = {
    // tokenizer error messages
    [CompileErrorCodes.EXPECTED_TOKEN]: `Expected token: '{0}'`,
    [CompileErrorCodes.INVALID_TOKEN_IN_PLACEHOLDER]: `Invalid token in placeholder: '{0}'`,
    [CompileErrorCodes.UNTERMINATED_SINGLE_QUOTE_IN_PLACEHOLDER]: `Unterminated single quote in placeholder`,
    [CompileErrorCodes.UNKNOWN_ESCAPE_SEQUENCE]: `Unknown escape sequence: \\{0}`,
    [CompileErrorCodes.INVALID_UNICODE_ESCAPE_SEQUENCE]: `Invalid unicode escape sequence: {0}`,
    [CompileErrorCodes.UNBALANCED_CLOSING_BRACE]: `Unbalanced closing brace`,
    [CompileErrorCodes.UNTERMINATED_CLOSING_BRACE]: `Unterminated closing brace`,
    [CompileErrorCodes.EMPTY_PLACEHOLDER]: `Empty placeholder`,
    [CompileErrorCodes.NOT_ALLOW_NEST_PLACEHOLDER]: `Not allowed nest placeholder`,
    [CompileErrorCodes.INVALID_LINKED_FORMAT]: `Invalid linked format`,
    // parser error messages
    [CompileErrorCodes.MUST_HAVE_MESSAGES_IN_PLURAL]: `Plural must have messages`,
    [CompileErrorCodes.UNEXPECTED_EMPTY_LINKED_MODIFIER]: `Unexpected empty linked modifier`,
    [CompileErrorCodes.UNEXPECTED_EMPTY_LINKED_KEY]: `Unexpected empty linked key`,
    [CompileErrorCodes.UNEXPECTED_LEXICAL_ANALYSIS]: `Unexpected lexical analysis in token: '{0}'`,
    // generator error messages
    [CompileErrorCodes.UNHANDLED_CODEGEN_NODE_TYPE]: `unhandled codegen node type: '{0}'`,
    // minimizer error messages
    [CompileErrorCodes.UNHANDLED_MINIFIER_NODE_TYPE]: `unhandled mimifier node type: '{0}'`
};
function createCompileError(code, loc, options = {}) {
    const { domain, messages, args } = options;
    const msg = format$1((messages || errorMessages$1)[code] || '', ...(args || []))
        ;
    const error = new SyntaxError(String(msg));
    error.code = code;
    if (loc) {
        error.location = loc;
    }
    error.domain = domain;
    return error;
}
/** @internal */
function defaultOnError(error) {
    throw error;
}

// eslint-disable-next-line no-useless-escape
const RE_HTML_TAG = /<\/?[\w\s="/.':;#-\/]+>/;
const detectHtmlTag = (source) => RE_HTML_TAG.test(source);

const CHAR_SP = ' ';
const CHAR_CR = '\r';
const CHAR_LF = '\n';
const CHAR_LS = String.fromCharCode(0x2028);
const CHAR_PS = String.fromCharCode(0x2029);
function createScanner(str) {
    const _buf = str;
    let _index = 0;
    let _line = 1;
    let _column = 1;
    let _peekOffset = 0;
    const isCRLF = (index) => _buf[index] === CHAR_CR && _buf[index + 1] === CHAR_LF;
    const isLF = (index) => _buf[index] === CHAR_LF;
    const isPS = (index) => _buf[index] === CHAR_PS;
    const isLS = (index) => _buf[index] === CHAR_LS;
    const isLineEnd = (index) => isCRLF(index) || isLF(index) || isPS(index) || isLS(index);
    const index = () => _index;
    const line = () => _line;
    const column = () => _column;
    const peekOffset = () => _peekOffset;
    const charAt = (offset) => isCRLF(offset) || isPS(offset) || isLS(offset) ? CHAR_LF : _buf[offset];
    const currentChar = () => charAt(_index);
    const currentPeek = () => charAt(_index + _peekOffset);
    function next() {
        _peekOffset = 0;
        if (isLineEnd(_index)) {
            _line++;
            _column = 0;
        }
        if (isCRLF(_index)) {
            _index++;
        }
        _index++;
        _column++;
        return _buf[_index];
    }
    function peek() {
        if (isCRLF(_index + _peekOffset)) {
            _peekOffset++;
        }
        _peekOffset++;
        return _buf[_index + _peekOffset];
    }
    function reset() {
        _index = 0;
        _line = 1;
        _column = 1;
        _peekOffset = 0;
    }
    function resetPeek(offset = 0) {
        _peekOffset = offset;
    }
    function skipToPeek() {
        const target = _index + _peekOffset;
        while (target !== _index) {
            next();
        }
        _peekOffset = 0;
    }
    return {
        index,
        line,
        column,
        peekOffset,
        charAt,
        currentChar,
        currentPeek,
        next,
        peek,
        reset,
        resetPeek,
        skipToPeek
    };
}

const EOF = undefined;
const DOT = '.';
const LITERAL_DELIMITER = "'";
const ERROR_DOMAIN$3 = 'tokenizer';
function createTokenizer(source, options = {}) {
    const location = options.location !== false;
    const _scnr = createScanner(source);
    const currentOffset = () => _scnr.index();
    const currentPosition = () => createPosition(_scnr.line(), _scnr.column(), _scnr.index());
    const _initLoc = currentPosition();
    const _initOffset = currentOffset();
    const _context = {
        currentType: 13 /* TokenTypes.EOF */,
        offset: _initOffset,
        startLoc: _initLoc,
        endLoc: _initLoc,
        lastType: 13 /* TokenTypes.EOF */,
        lastOffset: _initOffset,
        lastStartLoc: _initLoc,
        lastEndLoc: _initLoc,
        braceNest: 0,
        inLinked: false,
        text: ''
    };
    const context = () => _context;
    const { onError } = options;
    function emitError(code, pos, offset, ...args) {
        const ctx = context();
        pos.column += offset;
        pos.offset += offset;
        if (onError) {
            const loc = location ? createLocation(ctx.startLoc, pos) : null;
            const err = createCompileError(code, loc, {
                domain: ERROR_DOMAIN$3,
                args
            });
            onError(err);
        }
    }
    function getToken(context, type, value) {
        context.endLoc = currentPosition();
        context.currentType = type;
        const token = { type };
        if (location) {
            token.loc = createLocation(context.startLoc, context.endLoc);
        }
        if (value != null) {
            token.value = value;
        }
        return token;
    }
    const getEndToken = (context) => getToken(context, 13 /* TokenTypes.EOF */);
    function eat(scnr, ch) {
        if (scnr.currentChar() === ch) {
            scnr.next();
            return ch;
        }
        else {
            emitError(CompileErrorCodes.EXPECTED_TOKEN, currentPosition(), 0, ch);
            return '';
        }
    }
    function peekSpaces(scnr) {
        let buf = '';
        while (scnr.currentPeek() === CHAR_SP || scnr.currentPeek() === CHAR_LF) {
            buf += scnr.currentPeek();
            scnr.peek();
        }
        return buf;
    }
    function skipSpaces(scnr) {
        const buf = peekSpaces(scnr);
        scnr.skipToPeek();
        return buf;
    }
    function isIdentifierStart(ch) {
        if (ch === EOF) {
            return false;
        }
        const cc = ch.charCodeAt(0);
        return ((cc >= 97 && cc <= 122) || // a-z
            (cc >= 65 && cc <= 90) || // A-Z
            cc === 95 // _
        );
    }
    function isNumberStart(ch) {
        if (ch === EOF) {
            return false;
        }
        const cc = ch.charCodeAt(0);
        return cc >= 48 && cc <= 57; // 0-9
    }
    function isNamedIdentifierStart(scnr, context) {
        const { currentType } = context;
        if (currentType !== 2 /* TokenTypes.BraceLeft */) {
            return false;
        }
        peekSpaces(scnr);
        const ret = isIdentifierStart(scnr.currentPeek());
        scnr.resetPeek();
        return ret;
    }
    function isListIdentifierStart(scnr, context) {
        const { currentType } = context;
        if (currentType !== 2 /* TokenTypes.BraceLeft */) {
            return false;
        }
        peekSpaces(scnr);
        const ch = scnr.currentPeek() === '-' ? scnr.peek() : scnr.currentPeek();
        const ret = isNumberStart(ch);
        scnr.resetPeek();
        return ret;
    }
    function isLiteralStart(scnr, context) {
        const { currentType } = context;
        if (currentType !== 2 /* TokenTypes.BraceLeft */) {
            return false;
        }
        peekSpaces(scnr);
        const ret = scnr.currentPeek() === LITERAL_DELIMITER;
        scnr.resetPeek();
        return ret;
    }
    function isLinkedDotStart(scnr, context) {
        const { currentType } = context;
        if (currentType !== 7 /* TokenTypes.LinkedAlias */) {
            return false;
        }
        peekSpaces(scnr);
        const ret = scnr.currentPeek() === "." /* TokenChars.LinkedDot */;
        scnr.resetPeek();
        return ret;
    }
    function isLinkedModifierStart(scnr, context) {
        const { currentType } = context;
        if (currentType !== 8 /* TokenTypes.LinkedDot */) {
            return false;
        }
        peekSpaces(scnr);
        const ret = isIdentifierStart(scnr.currentPeek());
        scnr.resetPeek();
        return ret;
    }
    function isLinkedDelimiterStart(scnr, context) {
        const { currentType } = context;
        if (!(currentType === 7 /* TokenTypes.LinkedAlias */ ||
            currentType === 11 /* TokenTypes.LinkedModifier */)) {
            return false;
        }
        peekSpaces(scnr);
        const ret = scnr.currentPeek() === ":" /* TokenChars.LinkedDelimiter */;
        scnr.resetPeek();
        return ret;
    }
    function isLinkedReferStart(scnr, context) {
        const { currentType } = context;
        if (currentType !== 9 /* TokenTypes.LinkedDelimiter */) {
            return false;
        }
        const fn = () => {
            const ch = scnr.currentPeek();
            if (ch === "{" /* TokenChars.BraceLeft */) {
                return isIdentifierStart(scnr.peek());
            }
            else if (ch === "@" /* TokenChars.LinkedAlias */ ||
                ch === "|" /* TokenChars.Pipe */ ||
                ch === ":" /* TokenChars.LinkedDelimiter */ ||
                ch === "." /* TokenChars.LinkedDot */ ||
                ch === CHAR_SP ||
                !ch) {
                return false;
            }
            else if (ch === CHAR_LF) {
                scnr.peek();
                return fn();
            }
            else {
                // other characters
                return isTextStart(scnr, false);
            }
        };
        const ret = fn();
        scnr.resetPeek();
        return ret;
    }
    function isPluralStart(scnr) {
        peekSpaces(scnr);
        const ret = scnr.currentPeek() === "|" /* TokenChars.Pipe */;
        scnr.resetPeek();
        return ret;
    }
    function isTextStart(scnr, reset = true) {
        const fn = (hasSpace = false, prev = '') => {
            const ch = scnr.currentPeek();
            if (ch === "{" /* TokenChars.BraceLeft */) {
                return hasSpace;
            }
            else if (ch === "@" /* TokenChars.LinkedAlias */ || !ch) {
                return hasSpace;
            }
            else if (ch === "|" /* TokenChars.Pipe */) {
                return !(prev === CHAR_SP || prev === CHAR_LF);
            }
            else if (ch === CHAR_SP) {
                scnr.peek();
                return fn(true, CHAR_SP);
            }
            else if (ch === CHAR_LF) {
                scnr.peek();
                return fn(true, CHAR_LF);
            }
            else {
                return true;
            }
        };
        const ret = fn();
        reset && scnr.resetPeek();
        return ret;
    }
    function takeChar(scnr, fn) {
        const ch = scnr.currentChar();
        if (ch === EOF) {
            return EOF;
        }
        if (fn(ch)) {
            scnr.next();
            return ch;
        }
        return null;
    }
    function isIdentifier(ch) {
        const cc = ch.charCodeAt(0);
        return ((cc >= 97 && cc <= 122) || // a-z
            (cc >= 65 && cc <= 90) || // A-Z
            (cc >= 48 && cc <= 57) || // 0-9
            cc === 95 || // _
            cc === 36 // $
        );
    }
    function takeIdentifierChar(scnr) {
        return takeChar(scnr, isIdentifier);
    }
    function isNamedIdentifier(ch) {
        const cc = ch.charCodeAt(0);
        return ((cc >= 97 && cc <= 122) || // a-z
            (cc >= 65 && cc <= 90) || // A-Z
            (cc >= 48 && cc <= 57) || // 0-9
            cc === 95 || // _
            cc === 36 || // $
            cc === 45 // -
        );
    }
    function takeNamedIdentifierChar(scnr) {
        return takeChar(scnr, isNamedIdentifier);
    }
    function isDigit(ch) {
        const cc = ch.charCodeAt(0);
        return cc >= 48 && cc <= 57; // 0-9
    }
    function takeDigit(scnr) {
        return takeChar(scnr, isDigit);
    }
    function isHexDigit(ch) {
        const cc = ch.charCodeAt(0);
        return ((cc >= 48 && cc <= 57) || // 0-9
            (cc >= 65 && cc <= 70) || // A-F
            (cc >= 97 && cc <= 102)); // a-f
    }
    function takeHexDigit(scnr) {
        return takeChar(scnr, isHexDigit);
    }
    function getDigits(scnr) {
        let ch = '';
        let num = '';
        while ((ch = takeDigit(scnr))) {
            num += ch;
        }
        return num;
    }
    function readText(scnr) {
        let buf = '';
        while (true) {
            const ch = scnr.currentChar();
            if (ch === "{" /* TokenChars.BraceLeft */ ||
                ch === "}" /* TokenChars.BraceRight */ ||
                ch === "@" /* TokenChars.LinkedAlias */ ||
                ch === "|" /* TokenChars.Pipe */ ||
                !ch) {
                break;
            }
            else if (ch === CHAR_SP || ch === CHAR_LF) {
                if (isTextStart(scnr)) {
                    buf += ch;
                    scnr.next();
                }
                else if (isPluralStart(scnr)) {
                    break;
                }
                else {
                    buf += ch;
                    scnr.next();
                }
            }
            else {
                buf += ch;
                scnr.next();
            }
        }
        return buf;
    }
    function readNamedIdentifier(scnr) {
        skipSpaces(scnr);
        let ch = '';
        let name = '';
        while ((ch = takeNamedIdentifierChar(scnr))) {
            name += ch;
        }
        if (scnr.currentChar() === EOF) {
            emitError(CompileErrorCodes.UNTERMINATED_CLOSING_BRACE, currentPosition(), 0);
        }
        return name;
    }
    function readListIdentifier(scnr) {
        skipSpaces(scnr);
        let value = '';
        if (scnr.currentChar() === '-') {
            scnr.next();
            value += `-${getDigits(scnr)}`;
        }
        else {
            value += getDigits(scnr);
        }
        if (scnr.currentChar() === EOF) {
            emitError(CompileErrorCodes.UNTERMINATED_CLOSING_BRACE, currentPosition(), 0);
        }
        return value;
    }
    function isLiteral(ch) {
        return ch !== LITERAL_DELIMITER && ch !== CHAR_LF;
    }
    function readLiteral(scnr) {
        skipSpaces(scnr);
        // eslint-disable-next-line no-useless-escape
        eat(scnr, `\'`);
        let ch = '';
        let literal = '';
        while ((ch = takeChar(scnr, isLiteral))) {
            if (ch === '\\') {
                literal += readEscapeSequence(scnr);
            }
            else {
                literal += ch;
            }
        }
        const current = scnr.currentChar();
        if (current === CHAR_LF || current === EOF) {
            emitError(CompileErrorCodes.UNTERMINATED_SINGLE_QUOTE_IN_PLACEHOLDER, currentPosition(), 0);
            // TODO: Is it correct really?
            if (current === CHAR_LF) {
                scnr.next();
                // eslint-disable-next-line no-useless-escape
                eat(scnr, `\'`);
            }
            return literal;
        }
        // eslint-disable-next-line no-useless-escape
        eat(scnr, `\'`);
        return literal;
    }
    function readEscapeSequence(scnr) {
        const ch = scnr.currentChar();
        switch (ch) {
            case '\\':
            case `\'`: // eslint-disable-line no-useless-escape
                scnr.next();
                return `\\${ch}`;
            case 'u':
                return readUnicodeEscapeSequence(scnr, ch, 4);
            case 'U':
                return readUnicodeEscapeSequence(scnr, ch, 6);
            default:
                emitError(CompileErrorCodes.UNKNOWN_ESCAPE_SEQUENCE, currentPosition(), 0, ch);
                return '';
        }
    }
    function readUnicodeEscapeSequence(scnr, unicode, digits) {
        eat(scnr, unicode);
        let sequence = '';
        for (let i = 0; i < digits; i++) {
            const ch = takeHexDigit(scnr);
            if (!ch) {
                emitError(CompileErrorCodes.INVALID_UNICODE_ESCAPE_SEQUENCE, currentPosition(), 0, `\\${unicode}${sequence}${scnr.currentChar()}`);
                break;
            }
            sequence += ch;
        }
        return `\\${unicode}${sequence}`;
    }
    function isInvalidIdentifier(ch) {
        return (ch !== "{" /* TokenChars.BraceLeft */ &&
            ch !== "}" /* TokenChars.BraceRight */ &&
            ch !== CHAR_SP &&
            ch !== CHAR_LF);
    }
    function readInvalidIdentifier(scnr) {
        skipSpaces(scnr);
        let ch = '';
        let identifiers = '';
        while ((ch = takeChar(scnr, isInvalidIdentifier))) {
            identifiers += ch;
        }
        return identifiers;
    }
    function readLinkedModifier(scnr) {
        let ch = '';
        let name = '';
        while ((ch = takeIdentifierChar(scnr))) {
            name += ch;
        }
        return name;
    }
    function readLinkedRefer(scnr) {
        const fn = (buf) => {
            const ch = scnr.currentChar();
            if (ch === "{" /* TokenChars.BraceLeft */ ||
                ch === "@" /* TokenChars.LinkedAlias */ ||
                ch === "|" /* TokenChars.Pipe */ ||
                ch === "(" /* TokenChars.ParenLeft */ ||
                ch === ")" /* TokenChars.ParenRight */ ||
                !ch) {
                return buf;
            }
            else if (ch === CHAR_SP) {
                return buf;
            }
            else if (ch === CHAR_LF || ch === DOT) {
                buf += ch;
                scnr.next();
                return fn(buf);
            }
            else {
                buf += ch;
                scnr.next();
                return fn(buf);
            }
        };
        return fn('');
    }
    function readPlural(scnr) {
        skipSpaces(scnr);
        const plural = eat(scnr, "|" /* TokenChars.Pipe */);
        skipSpaces(scnr);
        return plural;
    }
    // TODO: We need refactoring of token parsing ...
    function readTokenInPlaceholder(scnr, context) {
        let token = null;
        const ch = scnr.currentChar();
        switch (ch) {
            case "{" /* TokenChars.BraceLeft */:
                if (context.braceNest >= 1) {
                    emitError(CompileErrorCodes.NOT_ALLOW_NEST_PLACEHOLDER, currentPosition(), 0);
                }
                scnr.next();
                token = getToken(context, 2 /* TokenTypes.BraceLeft */, "{" /* TokenChars.BraceLeft */);
                skipSpaces(scnr);
                context.braceNest++;
                return token;
            case "}" /* TokenChars.BraceRight */:
                if (context.braceNest > 0 &&
                    context.currentType === 2 /* TokenTypes.BraceLeft */) {
                    emitError(CompileErrorCodes.EMPTY_PLACEHOLDER, currentPosition(), 0);
                }
                scnr.next();
                token = getToken(context, 3 /* TokenTypes.BraceRight */, "}" /* TokenChars.BraceRight */);
                context.braceNest--;
                context.braceNest > 0 && skipSpaces(scnr);
                if (context.inLinked && context.braceNest === 0) {
                    context.inLinked = false;
                }
                return token;
            case "@" /* TokenChars.LinkedAlias */:
                if (context.braceNest > 0) {
                    emitError(CompileErrorCodes.UNTERMINATED_CLOSING_BRACE, currentPosition(), 0);
                }
                token = readTokenInLinked(scnr, context) || getEndToken(context);
                context.braceNest = 0;
                return token;
            default: {
                let validNamedIdentifier = true;
                let validListIdentifier = true;
                let validLiteral = true;
                if (isPluralStart(scnr)) {
                    if (context.braceNest > 0) {
                        emitError(CompileErrorCodes.UNTERMINATED_CLOSING_BRACE, currentPosition(), 0);
                    }
                    token = getToken(context, 1 /* TokenTypes.Pipe */, readPlural(scnr));
                    // reset
                    context.braceNest = 0;
                    context.inLinked = false;
                    return token;
                }
                if (context.braceNest > 0 &&
                    (context.currentType === 4 /* TokenTypes.Named */ ||
                        context.currentType === 5 /* TokenTypes.List */ ||
                        context.currentType === 6 /* TokenTypes.Literal */)) {
                    emitError(CompileErrorCodes.UNTERMINATED_CLOSING_BRACE, currentPosition(), 0);
                    context.braceNest = 0;
                    return readToken(scnr, context);
                }
                if ((validNamedIdentifier = isNamedIdentifierStart(scnr, context))) {
                    token = getToken(context, 4 /* TokenTypes.Named */, readNamedIdentifier(scnr));
                    skipSpaces(scnr);
                    return token;
                }
                if ((validListIdentifier = isListIdentifierStart(scnr, context))) {
                    token = getToken(context, 5 /* TokenTypes.List */, readListIdentifier(scnr));
                    skipSpaces(scnr);
                    return token;
                }
                if ((validLiteral = isLiteralStart(scnr, context))) {
                    token = getToken(context, 6 /* TokenTypes.Literal */, readLiteral(scnr));
                    skipSpaces(scnr);
                    return token;
                }
                if (!validNamedIdentifier && !validListIdentifier && !validLiteral) {
                    // TODO: we should be re-designed invalid cases, when we will extend message syntax near the future ...
                    token = getToken(context, 12 /* TokenTypes.InvalidPlace */, readInvalidIdentifier(scnr));
                    emitError(CompileErrorCodes.INVALID_TOKEN_IN_PLACEHOLDER, currentPosition(), 0, token.value);
                    skipSpaces(scnr);
                    return token;
                }
                break;
            }
        }
        return token;
    }
    // TODO: We need refactoring of token parsing ...
    function readTokenInLinked(scnr, context) {
        const { currentType } = context;
        let token = null;
        const ch = scnr.currentChar();
        if ((currentType === 7 /* TokenTypes.LinkedAlias */ ||
            currentType === 8 /* TokenTypes.LinkedDot */ ||
            currentType === 11 /* TokenTypes.LinkedModifier */ ||
            currentType === 9 /* TokenTypes.LinkedDelimiter */) &&
            (ch === CHAR_LF || ch === CHAR_SP)) {
            emitError(CompileErrorCodes.INVALID_LINKED_FORMAT, currentPosition(), 0);
        }
        switch (ch) {
            case "@" /* TokenChars.LinkedAlias */:
                scnr.next();
                token = getToken(context, 7 /* TokenTypes.LinkedAlias */, "@" /* TokenChars.LinkedAlias */);
                context.inLinked = true;
                return token;
            case "." /* TokenChars.LinkedDot */:
                skipSpaces(scnr);
                scnr.next();
                return getToken(context, 8 /* TokenTypes.LinkedDot */, "." /* TokenChars.LinkedDot */);
            case ":" /* TokenChars.LinkedDelimiter */:
                skipSpaces(scnr);
                scnr.next();
                return getToken(context, 9 /* TokenTypes.LinkedDelimiter */, ":" /* TokenChars.LinkedDelimiter */);
            default:
                if (isPluralStart(scnr)) {
                    token = getToken(context, 1 /* TokenTypes.Pipe */, readPlural(scnr));
                    // reset
                    context.braceNest = 0;
                    context.inLinked = false;
                    return token;
                }
                if (isLinkedDotStart(scnr, context) ||
                    isLinkedDelimiterStart(scnr, context)) {
                    skipSpaces(scnr);
                    return readTokenInLinked(scnr, context);
                }
                if (isLinkedModifierStart(scnr, context)) {
                    skipSpaces(scnr);
                    return getToken(context, 11 /* TokenTypes.LinkedModifier */, readLinkedModifier(scnr));
                }
                if (isLinkedReferStart(scnr, context)) {
                    skipSpaces(scnr);
                    if (ch === "{" /* TokenChars.BraceLeft */) {
                        // scan the placeholder
                        return readTokenInPlaceholder(scnr, context) || token;
                    }
                    else {
                        return getToken(context, 10 /* TokenTypes.LinkedKey */, readLinkedRefer(scnr));
                    }
                }
                if (currentType === 7 /* TokenTypes.LinkedAlias */) {
                    emitError(CompileErrorCodes.INVALID_LINKED_FORMAT, currentPosition(), 0);
                }
                context.braceNest = 0;
                context.inLinked = false;
                return readToken(scnr, context);
        }
    }
    // TODO: We need refactoring of token parsing ...
    function readToken(scnr, context) {
        let token = { type: 13 /* TokenTypes.EOF */ };
        if (context.braceNest > 0) {
            return readTokenInPlaceholder(scnr, context) || getEndToken(context);
        }
        if (context.inLinked) {
            return readTokenInLinked(scnr, context) || getEndToken(context);
        }
        const ch = scnr.currentChar();
        switch (ch) {
            case "{" /* TokenChars.BraceLeft */:
                return readTokenInPlaceholder(scnr, context) || getEndToken(context);
            case "}" /* TokenChars.BraceRight */:
                emitError(CompileErrorCodes.UNBALANCED_CLOSING_BRACE, currentPosition(), 0);
                scnr.next();
                return getToken(context, 3 /* TokenTypes.BraceRight */, "}" /* TokenChars.BraceRight */);
            case "@" /* TokenChars.LinkedAlias */:
                return readTokenInLinked(scnr, context) || getEndToken(context);
            default: {
                if (isPluralStart(scnr)) {
                    token = getToken(context, 1 /* TokenTypes.Pipe */, readPlural(scnr));
                    // reset
                    context.braceNest = 0;
                    context.inLinked = false;
                    return token;
                }
                if (isTextStart(scnr)) {
                    return getToken(context, 0 /* TokenTypes.Text */, readText(scnr));
                }
                break;
            }
        }
        return token;
    }
    function nextToken() {
        const { currentType, offset, startLoc, endLoc } = _context;
        _context.lastType = currentType;
        _context.lastOffset = offset;
        _context.lastStartLoc = startLoc;
        _context.lastEndLoc = endLoc;
        _context.offset = currentOffset();
        _context.startLoc = currentPosition();
        if (_scnr.currentChar() === EOF) {
            return getToken(_context, 13 /* TokenTypes.EOF */);
        }
        return readToken(_scnr, _context);
    }
    return {
        nextToken,
        currentOffset,
        currentPosition,
        context
    };
}

const ERROR_DOMAIN$2 = 'parser';
// Backslash backslash, backslash quote, uHHHH, UHHHHHH.
const KNOWN_ESCAPES = /(?:\\\\|\\'|\\u([0-9a-fA-F]{4})|\\U([0-9a-fA-F]{6}))/g;
function fromEscapeSequence(match, codePoint4, codePoint6) {
    switch (match) {
        case `\\\\`:
            return `\\`;
        // eslint-disable-next-line no-useless-escape
        case `\\\'`:
            // eslint-disable-next-line no-useless-escape
            return `\'`;
        default: {
            const codePoint = parseInt(codePoint4 || codePoint6, 16);
            if (codePoint <= 0xd7ff || codePoint >= 0xe000) {
                return String.fromCodePoint(codePoint);
            }
            // invalid ...
            // Replace them with U+FFFD REPLACEMENT CHARACTER.
            return '�';
        }
    }
}
function createParser(options = {}) {
    const location = options.location !== false;
    const { onError } = options;
    function emitError(tokenzer, code, start, offset, ...args) {
        const end = tokenzer.currentPosition();
        end.offset += offset;
        end.column += offset;
        if (onError) {
            const loc = location ? createLocation(start, end) : null;
            const err = createCompileError(code, loc, {
                domain: ERROR_DOMAIN$2,
                args
            });
            onError(err);
        }
    }
    function startNode(type, offset, loc) {
        const node = { type };
        if (location) {
            node.start = offset;
            node.end = offset;
            node.loc = { start: loc, end: loc };
        }
        return node;
    }
    function endNode(node, offset, pos, type) {
        if (location) {
            node.end = offset;
            if (node.loc) {
                node.loc.end = pos;
            }
        }
    }
    function parseText(tokenizer, value) {
        const context = tokenizer.context();
        const node = startNode(3 /* NodeTypes.Text */, context.offset, context.startLoc);
        node.value = value;
        endNode(node, tokenizer.currentOffset(), tokenizer.currentPosition());
        return node;
    }
    function parseList(tokenizer, index) {
        const context = tokenizer.context();
        const { lastOffset: offset, lastStartLoc: loc } = context; // get brace left loc
        const node = startNode(5 /* NodeTypes.List */, offset, loc);
        node.index = parseInt(index, 10);
        tokenizer.nextToken(); // skip brach right
        endNode(node, tokenizer.currentOffset(), tokenizer.currentPosition());
        return node;
    }
    function parseNamed(tokenizer, key) {
        const context = tokenizer.context();
        const { lastOffset: offset, lastStartLoc: loc } = context; // get brace left loc
        const node = startNode(4 /* NodeTypes.Named */, offset, loc);
        node.key = key;
        tokenizer.nextToken(); // skip brach right
        endNode(node, tokenizer.currentOffset(), tokenizer.currentPosition());
        return node;
    }
    function parseLiteral(tokenizer, value) {
        const context = tokenizer.context();
        const { lastOffset: offset, lastStartLoc: loc } = context; // get brace left loc
        const node = startNode(9 /* NodeTypes.Literal */, offset, loc);
        node.value = value.replace(KNOWN_ESCAPES, fromEscapeSequence);
        tokenizer.nextToken(); // skip brach right
        endNode(node, tokenizer.currentOffset(), tokenizer.currentPosition());
        return node;
    }
    function parseLinkedModifier(tokenizer) {
        const token = tokenizer.nextToken();
        const context = tokenizer.context();
        const { lastOffset: offset, lastStartLoc: loc } = context; // get linked dot loc
        const node = startNode(8 /* NodeTypes.LinkedModifier */, offset, loc);
        if (token.type !== 11 /* TokenTypes.LinkedModifier */) {
            // empty modifier
            emitError(tokenizer, CompileErrorCodes.UNEXPECTED_EMPTY_LINKED_MODIFIER, context.lastStartLoc, 0);
            node.value = '';
            endNode(node, offset, loc);
            return {
                nextConsumeToken: token,
                node
            };
        }
        // check token
        if (token.value == null) {
            emitError(tokenizer, CompileErrorCodes.UNEXPECTED_LEXICAL_ANALYSIS, context.lastStartLoc, 0, getTokenCaption(token));
        }
        node.value = token.value || '';
        endNode(node, tokenizer.currentOffset(), tokenizer.currentPosition());
        return {
            node
        };
    }
    function parseLinkedKey(tokenizer, value) {
        const context = tokenizer.context();
        const node = startNode(7 /* NodeTypes.LinkedKey */, context.offset, context.startLoc);
        node.value = value;
        endNode(node, tokenizer.currentOffset(), tokenizer.currentPosition());
        return node;
    }
    function parseLinked(tokenizer) {
        const context = tokenizer.context();
        const linkedNode = startNode(6 /* NodeTypes.Linked */, context.offset, context.startLoc);
        let token = tokenizer.nextToken();
        if (token.type === 8 /* TokenTypes.LinkedDot */) {
            const parsed = parseLinkedModifier(tokenizer);
            linkedNode.modifier = parsed.node;
            token = parsed.nextConsumeToken || tokenizer.nextToken();
        }
        // asset check token
        if (token.type !== 9 /* TokenTypes.LinkedDelimiter */) {
            emitError(tokenizer, CompileErrorCodes.UNEXPECTED_LEXICAL_ANALYSIS, context.lastStartLoc, 0, getTokenCaption(token));
        }
        token = tokenizer.nextToken();
        // skip brace left
        if (token.type === 2 /* TokenTypes.BraceLeft */) {
            token = tokenizer.nextToken();
        }
        switch (token.type) {
            case 10 /* TokenTypes.LinkedKey */:
                if (token.value == null) {
                    emitError(tokenizer, CompileErrorCodes.UNEXPECTED_LEXICAL_ANALYSIS, context.lastStartLoc, 0, getTokenCaption(token));
                }
                linkedNode.key = parseLinkedKey(tokenizer, token.value || '');
                break;
            case 4 /* TokenTypes.Named */:
                if (token.value == null) {
                    emitError(tokenizer, CompileErrorCodes.UNEXPECTED_LEXICAL_ANALYSIS, context.lastStartLoc, 0, getTokenCaption(token));
                }
                linkedNode.key = parseNamed(tokenizer, token.value || '');
                break;
            case 5 /* TokenTypes.List */:
                if (token.value == null) {
                    emitError(tokenizer, CompileErrorCodes.UNEXPECTED_LEXICAL_ANALYSIS, context.lastStartLoc, 0, getTokenCaption(token));
                }
                linkedNode.key = parseList(tokenizer, token.value || '');
                break;
            case 6 /* TokenTypes.Literal */:
                if (token.value == null) {
                    emitError(tokenizer, CompileErrorCodes.UNEXPECTED_LEXICAL_ANALYSIS, context.lastStartLoc, 0, getTokenCaption(token));
                }
                linkedNode.key = parseLiteral(tokenizer, token.value || '');
                break;
            default: {
                // empty key
                emitError(tokenizer, CompileErrorCodes.UNEXPECTED_EMPTY_LINKED_KEY, context.lastStartLoc, 0);
                const nextContext = tokenizer.context();
                const emptyLinkedKeyNode = startNode(7 /* NodeTypes.LinkedKey */, nextContext.offset, nextContext.startLoc);
                emptyLinkedKeyNode.value = '';
                endNode(emptyLinkedKeyNode, nextContext.offset, nextContext.startLoc);
                linkedNode.key = emptyLinkedKeyNode;
                endNode(linkedNode, nextContext.offset, nextContext.startLoc);
                return {
                    nextConsumeToken: token,
                    node: linkedNode
                };
            }
        }
        endNode(linkedNode, tokenizer.currentOffset(), tokenizer.currentPosition());
        return {
            node: linkedNode
        };
    }
    function parseMessage(tokenizer) {
        const context = tokenizer.context();
        const startOffset = context.currentType === 1 /* TokenTypes.Pipe */
            ? tokenizer.currentOffset()
            : context.offset;
        const startLoc = context.currentType === 1 /* TokenTypes.Pipe */
            ? context.endLoc
            : context.startLoc;
        const node = startNode(2 /* NodeTypes.Message */, startOffset, startLoc);
        node.items = [];
        let nextToken = null;
        do {
            const token = nextToken || tokenizer.nextToken();
            nextToken = null;
            switch (token.type) {
                case 0 /* TokenTypes.Text */:
                    if (token.value == null) {
                        emitError(tokenizer, CompileErrorCodes.UNEXPECTED_LEXICAL_ANALYSIS, context.lastStartLoc, 0, getTokenCaption(token));
                    }
                    node.items.push(parseText(tokenizer, token.value || ''));
                    break;
                case 5 /* TokenTypes.List */:
                    if (token.value == null) {
                        emitError(tokenizer, CompileErrorCodes.UNEXPECTED_LEXICAL_ANALYSIS, context.lastStartLoc, 0, getTokenCaption(token));
                    }
                    node.items.push(parseList(tokenizer, token.value || ''));
                    break;
                case 4 /* TokenTypes.Named */:
                    if (token.value == null) {
                        emitError(tokenizer, CompileErrorCodes.UNEXPECTED_LEXICAL_ANALYSIS, context.lastStartLoc, 0, getTokenCaption(token));
                    }
                    node.items.push(parseNamed(tokenizer, token.value || ''));
                    break;
                case 6 /* TokenTypes.Literal */:
                    if (token.value == null) {
                        emitError(tokenizer, CompileErrorCodes.UNEXPECTED_LEXICAL_ANALYSIS, context.lastStartLoc, 0, getTokenCaption(token));
                    }
                    node.items.push(parseLiteral(tokenizer, token.value || ''));
                    break;
                case 7 /* TokenTypes.LinkedAlias */: {
                    const parsed = parseLinked(tokenizer);
                    node.items.push(parsed.node);
                    nextToken = parsed.nextConsumeToken || null;
                    break;
                }
            }
        } while (context.currentType !== 13 /* TokenTypes.EOF */ &&
            context.currentType !== 1 /* TokenTypes.Pipe */);
        // adjust message node loc
        const endOffset = context.currentType === 1 /* TokenTypes.Pipe */
            ? context.lastOffset
            : tokenizer.currentOffset();
        const endLoc = context.currentType === 1 /* TokenTypes.Pipe */
            ? context.lastEndLoc
            : tokenizer.currentPosition();
        endNode(node, endOffset, endLoc);
        return node;
    }
    function parsePlural(tokenizer, offset, loc, msgNode) {
        const context = tokenizer.context();
        let hasEmptyMessage = msgNode.items.length === 0;
        const node = startNode(1 /* NodeTypes.Plural */, offset, loc);
        node.cases = [];
        node.cases.push(msgNode);
        do {
            const msg = parseMessage(tokenizer);
            if (!hasEmptyMessage) {
                hasEmptyMessage = msg.items.length === 0;
            }
            node.cases.push(msg);
        } while (context.currentType !== 13 /* TokenTypes.EOF */);
        if (hasEmptyMessage) {
            emitError(tokenizer, CompileErrorCodes.MUST_HAVE_MESSAGES_IN_PLURAL, loc, 0);
        }
        endNode(node, tokenizer.currentOffset(), tokenizer.currentPosition());
        return node;
    }
    function parseResource(tokenizer) {
        const context = tokenizer.context();
        const { offset, startLoc } = context;
        const msgNode = parseMessage(tokenizer);
        if (context.currentType === 13 /* TokenTypes.EOF */) {
            return msgNode;
        }
        else {
            return parsePlural(tokenizer, offset, startLoc, msgNode);
        }
    }
    function parse(source) {
        const tokenizer = createTokenizer(source, assign({}, options));
        const context = tokenizer.context();
        const node = startNode(0 /* NodeTypes.Resource */, context.offset, context.startLoc);
        if (location && node.loc) {
            node.loc.source = source;
        }
        node.body = parseResource(tokenizer);
        if (options.onCacheKey) {
            node.cacheKey = options.onCacheKey(source);
        }
        // assert whether achieved to EOF
        if (context.currentType !== 13 /* TokenTypes.EOF */) {
            emitError(tokenizer, CompileErrorCodes.UNEXPECTED_LEXICAL_ANALYSIS, context.lastStartLoc, 0, source[context.offset] || '');
        }
        endNode(node, tokenizer.currentOffset(), tokenizer.currentPosition());
        return node;
    }
    return { parse };
}
function getTokenCaption(token) {
    if (token.type === 13 /* TokenTypes.EOF */) {
        return 'EOF';
    }
    const name = (token.value || '').replace(/\r?\n/gu, '\\n');
    return name.length > 10 ? name.slice(0, 9) + '…' : name;
}

function createTransformer(ast, options = {} // eslint-disable-line
) {
    const _context = {
        ast,
        helpers: new Set()
    };
    const context = () => _context;
    const helper = (name) => {
        _context.helpers.add(name);
        return name;
    };
    return { context, helper };
}
function traverseNodes(nodes, transformer) {
    for (let i = 0; i < nodes.length; i++) {
        traverseNode(nodes[i], transformer);
    }
}
function traverseNode(node, transformer) {
    // TODO: if we need pre-hook of transform, should be implemented to here
    switch (node.type) {
        case 1 /* NodeTypes.Plural */:
            traverseNodes(node.cases, transformer);
            transformer.helper("plural" /* HelperNameMap.PLURAL */);
            break;
        case 2 /* NodeTypes.Message */:
            traverseNodes(node.items, transformer);
            break;
        case 6 /* NodeTypes.Linked */: {
            const linked = node;
            traverseNode(linked.key, transformer);
            transformer.helper("linked" /* HelperNameMap.LINKED */);
            transformer.helper("type" /* HelperNameMap.TYPE */);
            break;
        }
        case 5 /* NodeTypes.List */:
            transformer.helper("interpolate" /* HelperNameMap.INTERPOLATE */);
            transformer.helper("list" /* HelperNameMap.LIST */);
            break;
        case 4 /* NodeTypes.Named */:
            transformer.helper("interpolate" /* HelperNameMap.INTERPOLATE */);
            transformer.helper("named" /* HelperNameMap.NAMED */);
            break;
    }
    // TODO: if we need post-hook of transform, should be implemented to here
}
// transform AST
function transform(ast, options = {} // eslint-disable-line
) {
    const transformer = createTransformer(ast);
    transformer.helper("normalize" /* HelperNameMap.NORMALIZE */);
    // traverse
    ast.body && traverseNode(ast.body, transformer);
    // set meta information
    const context = transformer.context();
    ast.helpers = Array.from(context.helpers);
}

function optimize(ast) {
    const body = ast.body;
    if (body.type === 2 /* NodeTypes.Message */) {
        optimizeMessageNode(body);
    }
    else {
        body.cases.forEach(c => optimizeMessageNode(c));
    }
    return ast;
}
function optimizeMessageNode(message) {
    if (message.items.length === 1) {
        const item = message.items[0];
        if (item.type === 3 /* NodeTypes.Text */ || item.type === 9 /* NodeTypes.Literal */) {
            message.static = item.value;
            delete item.value; // optimization for size
        }
    }
    else {
        const values = [];
        for (let i = 0; i < message.items.length; i++) {
            const item = message.items[i];
            if (!(item.type === 3 /* NodeTypes.Text */ || item.type === 9 /* NodeTypes.Literal */)) {
                break;
            }
            if (item.value == null) {
                break;
            }
            values.push(item.value);
        }
        if (values.length === message.items.length) {
            message.static = join(values);
            for (let i = 0; i < message.items.length; i++) {
                const item = message.items[i];
                if (item.type === 3 /* NodeTypes.Text */ || item.type === 9 /* NodeTypes.Literal */) {
                    delete item.value; // optimization for size
                }
            }
        }
    }
}

const ERROR_DOMAIN$1 = 'minifier';
/* eslint-disable @typescript-eslint/no-explicit-any */
function minify(node) {
    node.t = node.type;
    switch (node.type) {
        case 0 /* NodeTypes.Resource */: {
            const resource = node;
            minify(resource.body);
            resource.b = resource.body;
            delete resource.body;
            break;
        }
        case 1 /* NodeTypes.Plural */: {
            const plural = node;
            const cases = plural.cases;
            for (let i = 0; i < cases.length; i++) {
                minify(cases[i]);
            }
            plural.c = cases;
            delete plural.cases;
            break;
        }
        case 2 /* NodeTypes.Message */: {
            const message = node;
            const items = message.items;
            for (let i = 0; i < items.length; i++) {
                minify(items[i]);
            }
            message.i = items;
            delete message.items;
            if (message.static) {
                message.s = message.static;
                delete message.static;
            }
            break;
        }
        case 3 /* NodeTypes.Text */:
        case 9 /* NodeTypes.Literal */:
        case 8 /* NodeTypes.LinkedModifier */:
        case 7 /* NodeTypes.LinkedKey */: {
            const valueNode = node;
            if (valueNode.value) {
                valueNode.v = valueNode.value;
                delete valueNode.value;
            }
            break;
        }
        case 6 /* NodeTypes.Linked */: {
            const linked = node;
            minify(linked.key);
            linked.k = linked.key;
            delete linked.key;
            if (linked.modifier) {
                minify(linked.modifier);
                linked.m = linked.modifier;
                delete linked.modifier;
            }
            break;
        }
        case 5 /* NodeTypes.List */: {
            const list = node;
            list.i = list.index;
            delete list.index;
            break;
        }
        case 4 /* NodeTypes.Named */: {
            const named = node;
            named.k = named.key;
            delete named.key;
            break;
        }
        default:
            {
                throw createCompileError(CompileErrorCodes.UNHANDLED_MINIFIER_NODE_TYPE, null, {
                    domain: ERROR_DOMAIN$1,
                    args: [node.type]
                });
            }
    }
    delete node.type;
}
/* eslint-enable @typescript-eslint/no-explicit-any */

// eslint-disable-next-line @typescript-eslint/triple-slash-reference
/// <reference types="source-map-js" />
const ERROR_DOMAIN = 'parser';
function createCodeGenerator(ast, options) {
    const { sourceMap, filename, breakLineCode, needIndent: _needIndent } = options;
    const location = options.location !== false;
    const _context = {
        filename,
        code: '',
        column: 1,
        line: 1,
        offset: 0,
        map: undefined,
        breakLineCode,
        needIndent: _needIndent,
        indentLevel: 0
    };
    if (location && ast.loc) {
        _context.source = ast.loc.source;
    }
    const context = () => _context;
    function push(code, node) {
        _context.code += code;
    }
    function _newline(n, withBreakLine = true) {
        const _breakLineCode = withBreakLine ? breakLineCode : '';
        push(_needIndent ? _breakLineCode + `  `.repeat(n) : _breakLineCode);
    }
    function indent(withNewLine = true) {
        const level = ++_context.indentLevel;
        withNewLine && _newline(level);
    }
    function deindent(withNewLine = true) {
        const level = --_context.indentLevel;
        withNewLine && _newline(level);
    }
    function newline() {
        _newline(_context.indentLevel);
    }
    const helper = (key) => `_${key}`;
    const needIndent = () => _context.needIndent;
    return {
        context,
        push,
        indent,
        deindent,
        newline,
        helper,
        needIndent
    };
}
function generateLinkedNode(generator, node) {
    const { helper } = generator;
    generator.push(`${helper("linked" /* HelperNameMap.LINKED */)}(`);
    generateNode(generator, node.key);
    if (node.modifier) {
        generator.push(`, `);
        generateNode(generator, node.modifier);
        generator.push(`, _type`);
    }
    else {
        generator.push(`, undefined, _type`);
    }
    generator.push(`)`);
}
function generateMessageNode(generator, node) {
    const { helper, needIndent } = generator;
    generator.push(`${helper("normalize" /* HelperNameMap.NORMALIZE */)}([`);
    generator.indent(needIndent());
    const length = node.items.length;
    for (let i = 0; i < length; i++) {
        generateNode(generator, node.items[i]);
        if (i === length - 1) {
            break;
        }
        generator.push(', ');
    }
    generator.deindent(needIndent());
    generator.push('])');
}
function generatePluralNode(generator, node) {
    const { helper, needIndent } = generator;
    if (node.cases.length > 1) {
        generator.push(`${helper("plural" /* HelperNameMap.PLURAL */)}([`);
        generator.indent(needIndent());
        const length = node.cases.length;
        for (let i = 0; i < length; i++) {
            generateNode(generator, node.cases[i]);
            if (i === length - 1) {
                break;
            }
            generator.push(', ');
        }
        generator.deindent(needIndent());
        generator.push(`])`);
    }
}
function generateResource(generator, node) {
    if (node.body) {
        generateNode(generator, node.body);
    }
    else {
        generator.push('null');
    }
}
function generateNode(generator, node) {
    const { helper } = generator;
    switch (node.type) {
        case 0 /* NodeTypes.Resource */:
            generateResource(generator, node);
            break;
        case 1 /* NodeTypes.Plural */:
            generatePluralNode(generator, node);
            break;
        case 2 /* NodeTypes.Message */:
            generateMessageNode(generator, node);
            break;
        case 6 /* NodeTypes.Linked */:
            generateLinkedNode(generator, node);
            break;
        case 8 /* NodeTypes.LinkedModifier */:
            generator.push(JSON.stringify(node.value), node);
            break;
        case 7 /* NodeTypes.LinkedKey */:
            generator.push(JSON.stringify(node.value), node);
            break;
        case 5 /* NodeTypes.List */:
            generator.push(`${helper("interpolate" /* HelperNameMap.INTERPOLATE */)}(${helper("list" /* HelperNameMap.LIST */)}(${node.index}))`, node);
            break;
        case 4 /* NodeTypes.Named */:
            generator.push(`${helper("interpolate" /* HelperNameMap.INTERPOLATE */)}(${helper("named" /* HelperNameMap.NAMED */)}(${JSON.stringify(node.key)}))`, node);
            break;
        case 9 /* NodeTypes.Literal */:
            generator.push(JSON.stringify(node.value), node);
            break;
        case 3 /* NodeTypes.Text */:
            generator.push(JSON.stringify(node.value), node);
            break;
        default:
            {
                throw createCompileError(CompileErrorCodes.UNHANDLED_CODEGEN_NODE_TYPE, null, {
                    domain: ERROR_DOMAIN,
                    args: [node.type]
                });
            }
    }
}
// generate code from AST
const generate = (ast, options = {}) => {
    const mode = isString(options.mode) ? options.mode : 'normal';
    const filename = isString(options.filename)
        ? options.filename
        : 'message.intl';
    const sourceMap = !!options.sourceMap;
    // prettier-ignore
    const breakLineCode = options.breakLineCode != null
        ? options.breakLineCode
        : mode === 'arrow'
            ? ';'
            : '\n';
    const needIndent = options.needIndent ? options.needIndent : mode !== 'arrow';
    const helpers = ast.helpers || [];
    const generator = createCodeGenerator(ast, {
        mode,
        filename,
        sourceMap,
        breakLineCode,
        needIndent
    });
    generator.push(mode === 'normal' ? `function __msg__ (ctx) {` : `(ctx) => {`);
    generator.indent(needIndent);
    if (helpers.length > 0) {
        generator.push(`const { ${join(helpers.map(s => `${s}: _${s}`), ', ')} } = ctx`);
        generator.newline();
    }
    generator.push(`return `);
    generateNode(generator, ast);
    generator.deindent(needIndent);
    generator.push(`}`);
    delete ast.helpers;
    const { code, map } = generator.context();
    return {
        ast,
        code,
        map: map ? map.toJSON() : undefined // eslint-disable-line @typescript-eslint/no-explicit-any
    };
};

function baseCompile$1(source, options = {}) {
    const assignedOptions = assign({}, options);
    const jit = !!assignedOptions.jit;
    const enalbeMinify = !!assignedOptions.minify;
    const enambeOptimize = assignedOptions.optimize == null ? true : assignedOptions.optimize;
    // parse source codes
    const parser = createParser(assignedOptions);
    const ast = parser.parse(source);
    if (!jit) {
        // transform ASTs
        transform(ast, assignedOptions);
        // generate javascript codes
        return generate(ast, assignedOptions);
    }
    else {
        // optimize ASTs
        enambeOptimize && optimize(ast);
        // minimize ASTs
        enalbeMinify && minify(ast);
        // In JIT mode, no ast transform, no code generation.
        return { ast, code: '' };
    }
}

function isMessageAST(val) {
    return (isObject(val) &&
        resolveType(val) === 0 &&
        (hasOwn(val, 'b') || hasOwn(val, 'body')));
}
const PROPS_BODY = ['b', 'body'];
function resolveBody(node) {
    return resolveProps(node, PROPS_BODY);
}
const PROPS_CASES = ['c', 'cases'];
function resolveCases(node) {
    return resolveProps(node, PROPS_CASES, []);
}
const PROPS_STATIC = ['s', 'static'];
function resolveStatic(node) {
    return resolveProps(node, PROPS_STATIC);
}
const PROPS_ITEMS = ['i', 'items'];
function resolveItems(node) {
    return resolveProps(node, PROPS_ITEMS, []);
}
const PROPS_TYPE = ['t', 'type'];
function resolveType(node) {
    return resolveProps(node, PROPS_TYPE);
}
const PROPS_VALUE = ['v', 'value'];
function resolveValue$1(node, type) {
    const resolved = resolveProps(node, PROPS_VALUE);
    if (resolved != null) {
        return resolved;
    }
    else {
        throw createUnhandleNodeError(type);
    }
}
const PROPS_MODIFIER = ['m', 'modifier'];
function resolveLinkedModifier(node) {
    return resolveProps(node, PROPS_MODIFIER);
}
const PROPS_KEY = ['k', 'key'];
function resolveLinkedKey(node) {
    const resolved = resolveProps(node, PROPS_KEY);
    if (resolved) {
        return resolved;
    }
    else {
        throw createUnhandleNodeError(6 /* NodeTypes.Linked */);
    }
}
function resolveProps(node, props, defaultValue) {
    for (let i = 0; i < props.length; i++) {
        const prop = props[i];
        // eslint-disable-next-line @typescript-eslint/no-explicit-any
        if (hasOwn(node, prop) && node[prop] != null) {
            // eslint-disable-next-line @typescript-eslint/no-explicit-any
            return node[prop];
        }
    }
    return defaultValue;
}
const AST_NODE_PROPS_KEYS = [
    ...PROPS_BODY,
    ...PROPS_CASES,
    ...PROPS_STATIC,
    ...PROPS_ITEMS,
    ...PROPS_KEY,
    ...PROPS_MODIFIER,
    ...PROPS_VALUE,
    ...PROPS_TYPE
];
function createUnhandleNodeError(type) {
    return new Error(`unhandled node type: ${type}`);
}

function format(ast) {
    const msg = (ctx) => formatParts(ctx, ast);
    return msg;
}
function formatParts(ctx, ast) {
    const body = resolveBody(ast);
    if (body == null) {
        throw createUnhandleNodeError(0 /* NodeTypes.Resource */);
    }
    const type = resolveType(body);
    if (type === 1 /* NodeTypes.Plural */) {
        const plural = body;
        const cases = resolveCases(plural);
        return ctx.plural(cases.reduce((messages, c) => [
            ...messages,
            formatMessageParts(ctx, c)
        ], []));
    }
    else {
        return formatMessageParts(ctx, body);
    }
}
function formatMessageParts(ctx, node) {
    const static_ = resolveStatic(node);
    if (static_ != null) {
        return ctx.type === 'text'
            ? static_
            : ctx.normalize([static_]);
    }
    else {
        const messages = resolveItems(node).reduce((acm, c) => [...acm, formatMessagePart(ctx, c)], []);
        return ctx.normalize(messages);
    }
}
function formatMessagePart(ctx, node) {
    const type = resolveType(node);
    switch (type) {
        case 3 /* NodeTypes.Text */: {
            return resolveValue$1(node, type);
        }
        case 9 /* NodeTypes.Literal */: {
            return resolveValue$1(node, type);
        }
        case 4 /* NodeTypes.Named */: {
            const named = node;
            if (hasOwn(named, 'k') && named.k) {
                return ctx.interpolate(ctx.named(named.k));
            }
            if (hasOwn(named, 'key') && named.key) {
                return ctx.interpolate(ctx.named(named.key));
            }
            throw createUnhandleNodeError(type);
        }
        case 5 /* NodeTypes.List */: {
            const list = node;
            if (hasOwn(list, 'i') && isNumber(list.i)) {
                return ctx.interpolate(ctx.list(list.i));
            }
            if (hasOwn(list, 'index') && isNumber(list.index)) {
                return ctx.interpolate(ctx.list(list.index));
            }
            throw createUnhandleNodeError(type);
        }
        case 6 /* NodeTypes.Linked */: {
            const linked = node;
            const modifier = resolveLinkedModifier(linked);
            const key = resolveLinkedKey(linked);
            return ctx.linked(formatMessagePart(ctx, key), modifier ? formatMessagePart(ctx, modifier) : undefined, ctx.type);
        }
        case 7 /* NodeTypes.LinkedKey */: {
            return resolveValue$1(node, type);
        }
        case 8 /* NodeTypes.LinkedModifier */: {
            return resolveValue$1(node, type);
        }
        default:
            throw new Error(`unhandled node on format message part: ${type}`);
    }
}

const WARN_MESSAGE = `Detected HTML in '{source}' message. Recommend not using HTML messages to avoid XSS.`;
function checkHtmlMessage(source, warnHtmlMessage) {
    if (warnHtmlMessage && detectHtmlTag(source)) {
        warn(format$1(WARN_MESSAGE, { source }));
    }
}
const defaultOnCacheKey = (message) => message;
let compileCache = create();
function clearCompileCache() {
    compileCache = create();
}
function baseCompile(message, options = {}) {
    // error detecting on compile
    let detectError = false;
    const onError = options.onError || defaultOnError;
    options.onError = (err) => {
        detectError = true;
        onError(err);
    };
    // compile with mesasge-compiler
    return { ...baseCompile$1(message, options), detectError };
}
/* #__NO_SIDE_EFFECTS__ */
function compile(message, context) {
    if (isString(message)) {
        // check HTML message
        const warnHtmlMessage = isBoolean(context.warnHtmlMessage)
            ? context.warnHtmlMessage
            : true;
        checkHtmlMessage(message, warnHtmlMessage);
        // check caches
        const onCacheKey = context.onCacheKey || defaultOnCacheKey;
        const cacheKey = onCacheKey(message);
        const cached = compileCache[cacheKey];
        if (cached) {
            return cached;
        }
        // compile with JIT mode
        const { ast, detectError } = baseCompile(message, {
            ...context,
            location: true,
            jit: true
        });
        // compose message function from AST
        const msg = format(ast);
        // if occurred compile error, don't cache
        return !detectError
            ? (compileCache[cacheKey] = msg)
            : msg;
    }
    else {
        if (!isMessageAST(message)) {
            warn(`the message that is resolve with key '${context.key}' is not supported for jit compilation`);
            return (() => message);
        }
        // AST case (passed from bundler)
        const cacheKey = message.cacheKey;
        if (cacheKey) {
            const cached = compileCache[cacheKey];
            if (cached) {
                return cached;
            }
            // compose message function from message (AST)
            return (compileCache[cacheKey] =
                format(message));
        }
        else {
            return format(message);
        }
    }
}

let devtools = null;
function setDevToolsHook(hook) {
    devtools = hook;
}
function getDevToolsHook() {
    return devtools;
}
function initI18nDevTools(i18n, version, meta) {
    // TODO: queue if devtools is undefined
    devtools &&
        devtools.emit('i18n:init', {
            timestamp: Date.now(),
            i18n,
            version,
            meta
        });
}
const translateDevTools = 
/* #__PURE__*/ createDevToolsHook('function:translate');
function createDevToolsHook(hook) {
    return (payloads) => devtools && devtools.emit(hook, payloads);
}

const CoreErrorCodes = {
    INVALID_ARGUMENT: COMPILE_ERROR_CODES_EXTEND_POINT, // 17
    INVALID_DATE_ARGUMENT: 18,
    INVALID_ISO_DATE_ARGUMENT: 19,
    NOT_SUPPORT_NON_STRING_MESSAGE: 20,
    NOT_SUPPORT_LOCALE_PROMISE_VALUE: 21,
    NOT_SUPPORT_LOCALE_ASYNC_FUNCTION: 22,
    NOT_SUPPORT_LOCALE_TYPE: 23
};
const CORE_ERROR_CODES_EXTEND_POINT = 24;
function createCoreError(code) {
    return createCompileError(code, null, { messages: errorMessages } );
}
/** @internal */
const errorMessages = {
    [CoreErrorCodes.INVALID_ARGUMENT]: 'Invalid arguments',
    [CoreErrorCodes.INVALID_DATE_ARGUMENT]: 'The date provided is an invalid Date object.' +
        'Make sure your Date represents a valid date.',
    [CoreErrorCodes.INVALID_ISO_DATE_ARGUMENT]: 'The argument provided is not a valid ISO date string',
    [CoreErrorCodes.NOT_SUPPORT_NON_STRING_MESSAGE]: 'Not support non-string message',
    [CoreErrorCodes.NOT_SUPPORT_LOCALE_PROMISE_VALUE]: 'cannot support promise value',
    [CoreErrorCodes.NOT_SUPPORT_LOCALE_ASYNC_FUNCTION]: 'cannot support async function',
    [CoreErrorCodes.NOT_SUPPORT_LOCALE_TYPE]: 'cannot support locale type'
};

/** @internal */
function getLocale(context, options) {
    return options.locale != null
        ? resolveLocale(options.locale)
        : resolveLocale(context.locale);
}
let _resolveLocale;
/** @internal */
function resolveLocale(locale) {
    if (isString(locale)) {
        return locale;
    }
    else {
        if (isFunction(locale)) {
            if (locale.resolvedOnce && _resolveLocale != null) {
                return _resolveLocale;
            }
            else if (locale.constructor.name === 'Function') {
                const resolve = locale();
                if (isPromise(resolve)) {
                    throw createCoreError(CoreErrorCodes.NOT_SUPPORT_LOCALE_PROMISE_VALUE);
                }
                return (_resolveLocale = resolve);
            }
            else {
                throw createCoreError(CoreErrorCodes.NOT_SUPPORT_LOCALE_ASYNC_FUNCTION);
            }
        }
        else {
            throw createCoreError(CoreErrorCodes.NOT_SUPPORT_LOCALE_TYPE);
        }
    }
}
/**
 * Fallback with simple implemenation
 *
 * @remarks
 * A fallback locale function implemented with a simple fallback algorithm.
 *
 * Basically, it returns the value as specified in the `fallbackLocale` props, and is processed with the fallback inside intlify.
 *
 * @param ctx - A {@link CoreContext | context}
 * @param fallback - A {@link FallbackLocale | fallback locale}
 * @param start - A starting {@link Locale | locale}
 *
 * @returns Fallback locales
 *
 * @VueI18nGeneral
 */
function fallbackWithSimple(ctx, fallback, start) {
    // prettier-ignore
    return [...new Set([
            start,
            ...(isArray(fallback)
                ? fallback
                : isObject(fallback)
                    ? Object.keys(fallback)
                    : isString(fallback)
                        ? [fallback]
                        : [start])
        ])];
}
/**
 * Fallback with locale chain
 *
 * @remarks
 * A fallback locale function implemented with a fallback chain algorithm. It's used in VueI18n as default.
 *
 * @param ctx - A {@link CoreContext | context}
 * @param fallback - A {@link FallbackLocale | fallback locale}
 * @param start - A starting {@link Locale | locale}
 *
 * @returns Fallback locales
 *
 * @VueI18nSee [Fallbacking](../guide/essentials/fallback)
 *
 * @VueI18nGeneral
 */
function fallbackWithLocaleChain(ctx, fallback, start) {
    const startLocale = isString(start) ? start : DEFAULT_LOCALE;
    const context = ctx;
    if (!context.__localeChainCache) {
        context.__localeChainCache = new Map();
    }
    let chain = context.__localeChainCache.get(startLocale);
    if (!chain) {
        chain = [];
        // first block defined by start
        let block = [start];
        // while any intervening block found
        while (isArray(block)) {
            block = appendBlockToChain(chain, block, fallback);
        }
        // prettier-ignore
        // last block defined by default
        const defaults = isArray(fallback) || !isPlainObject(fallback)
            ? fallback
            : fallback['default']
                ? fallback['default']
                : null;
        // convert defaults to array
        block = isString(defaults) ? [defaults] : defaults;
        if (isArray(block)) {
            appendBlockToChain(chain, block, false);
        }
        context.__localeChainCache.set(startLocale, chain);
    }
    return chain;
}
function appendBlockToChain(chain, block, blocks) {
    let follow = true;
    for (let i = 0; i < block.length && isBoolean(follow); i++) {
        const locale = block[i];
        if (isString(locale)) {
            follow = appendLocaleToChain(chain, block[i], blocks);
        }
    }
    return follow;
}
function appendLocaleToChain(chain, locale, blocks) {
    let follow;
    const tokens = locale.split('-');
    do {
        const target = tokens.join('-');
        follow = appendItemToChain(chain, target, blocks);
        tokens.splice(-1, 1);
    } while (tokens.length && follow === true);
    return follow;
}
function appendItemToChain(chain, target, blocks) {
    let follow = false;
    if (!chain.includes(target)) {
        follow = true;
        if (target) {
            follow = target[target.length - 1] !== '!';
            const locale = target.replace(/!/g, '');
            chain.push(locale);
            if ((isArray(blocks) || isPlainObject(blocks)) &&
                blocks[locale] // eslint-disable-line @typescript-eslint/no-explicit-any
            ) {
                // eslint-disable-next-line @typescript-eslint/no-explicit-any
                follow = blocks[locale];
            }
        }
    }
    return follow;
}

const pathStateMachine = [];
pathStateMachine[0 /* States.BEFORE_PATH */] = {
    ["w" /* PathCharTypes.WORKSPACE */]: [0 /* States.BEFORE_PATH */],
    ["i" /* PathCharTypes.IDENT */]: [3 /* States.IN_IDENT */, 0 /* Actions.APPEND */],
    ["[" /* PathCharTypes.LEFT_BRACKET */]: [4 /* States.IN_SUB_PATH */],
    ["o" /* PathCharTypes.END_OF_FAIL */]: [7 /* States.AFTER_PATH */]
};
pathStateMachine[1 /* States.IN_PATH */] = {
    ["w" /* PathCharTypes.WORKSPACE */]: [1 /* States.IN_PATH */],
    ["." /* PathCharTypes.DOT */]: [2 /* States.BEFORE_IDENT */],
    ["[" /* PathCharTypes.LEFT_BRACKET */]: [4 /* States.IN_SUB_PATH */],
    ["o" /* PathCharTypes.END_OF_FAIL */]: [7 /* States.AFTER_PATH */]
};
pathStateMachine[2 /* States.BEFORE_IDENT */] = {
    ["w" /* PathCharTypes.WORKSPACE */]: [2 /* States.BEFORE_IDENT */],
    ["i" /* PathCharTypes.IDENT */]: [3 /* States.IN_IDENT */, 0 /* Actions.APPEND */],
    ["0" /* PathCharTypes.ZERO */]: [3 /* States.IN_IDENT */, 0 /* Actions.APPEND */]
};
pathStateMachine[3 /* States.IN_IDENT */] = {
    ["i" /* PathCharTypes.IDENT */]: [3 /* States.IN_IDENT */, 0 /* Actions.APPEND */],
    ["0" /* PathCharTypes.ZERO */]: [3 /* States.IN_IDENT */, 0 /* Actions.APPEND */],
    ["w" /* PathCharTypes.WORKSPACE */]: [1 /* States.IN_PATH */, 1 /* Actions.PUSH */],
    ["." /* PathCharTypes.DOT */]: [2 /* States.BEFORE_IDENT */, 1 /* Actions.PUSH */],
    ["[" /* PathCharTypes.LEFT_BRACKET */]: [4 /* States.IN_SUB_PATH */, 1 /* Actions.PUSH */],
    ["o" /* PathCharTypes.END_OF_FAIL */]: [7 /* States.AFTER_PATH */, 1 /* Actions.PUSH */]
};
pathStateMachine[4 /* States.IN_SUB_PATH */] = {
    ["'" /* PathCharTypes.SINGLE_QUOTE */]: [5 /* States.IN_SINGLE_QUOTE */, 0 /* Actions.APPEND */],
    ["\"" /* PathCharTypes.DOUBLE_QUOTE */]: [6 /* States.IN_DOUBLE_QUOTE */, 0 /* Actions.APPEND */],
    ["[" /* PathCharTypes.LEFT_BRACKET */]: [
        4 /* States.IN_SUB_PATH */,
        2 /* Actions.INC_SUB_PATH_DEPTH */
    ],
    ["]" /* PathCharTypes.RIGHT_BRACKET */]: [1 /* States.IN_PATH */, 3 /* Actions.PUSH_SUB_PATH */],
    ["o" /* PathCharTypes.END_OF_FAIL */]: 8 /* States.ERROR */,
    ["l" /* PathCharTypes.ELSE */]: [4 /* States.IN_SUB_PATH */, 0 /* Actions.APPEND */]
};
pathStateMachine[5 /* States.IN_SINGLE_QUOTE */] = {
    ["'" /* PathCharTypes.SINGLE_QUOTE */]: [4 /* States.IN_SUB_PATH */, 0 /* Actions.APPEND */],
    ["o" /* PathCharTypes.END_OF_FAIL */]: 8 /* States.ERROR */,
    ["l" /* PathCharTypes.ELSE */]: [5 /* States.IN_SINGLE_QUOTE */, 0 /* Actions.APPEND */]
};
pathStateMachine[6 /* States.IN_DOUBLE_QUOTE */] = {
    ["\"" /* PathCharTypes.DOUBLE_QUOTE */]: [4 /* States.IN_SUB_PATH */, 0 /* Actions.APPEND */],
    ["o" /* PathCharTypes.END_OF_FAIL */]: 8 /* States.ERROR */,
    ["l" /* PathCharTypes.ELSE */]: [6 /* States.IN_DOUBLE_QUOTE */, 0 /* Actions.APPEND */]
};
/**
 * Check if an expression is a literal value.
 */
const literalValueRE = /^\s?(?:true|false|-?[\d.]+|'[^']*'|"[^"]*")\s?$/;
function isLiteral(exp) {
    return literalValueRE.test(exp);
}
/**
 * Strip quotes from a string
 */
function stripQuotes(str) {
    const a = str.charCodeAt(0);
    const b = str.charCodeAt(str.length - 1);
    return a === b && (a === 0x22 || a === 0x27) ? str.slice(1, -1) : str;
}
/**
 * Determine the type of a character in a keypath.
 */
function getPathCharType(ch) {
    if (ch === undefined || ch === null) {
        return "o" /* PathCharTypes.END_OF_FAIL */;
    }
    const code = ch.charCodeAt(0);
    switch (code) {
        case 0x5b: // [
        case 0x5d: // ]
        case 0x2e: // .
        case 0x22: // "
        case 0x27: // '
            return ch;
        case 0x5f: // _
        case 0x24: // $
        case 0x2d: // -
            return "i" /* PathCharTypes.IDENT */;
        case 0x09: // Tab (HT)
        case 0x0a: // Newline (LF)
        case 0x0d: // Return (CR)
        case 0xa0: // No-break space (NBSP)
        case 0xfeff: // Byte Order Mark (BOM)
        case 0x2028: // Line Separator (LS)
        case 0x2029: // Paragraph Separator (PS)
            return "w" /* PathCharTypes.WORKSPACE */;
    }
    return "i" /* PathCharTypes.IDENT */;
}
/**
 * Format a subPath, return its plain form if it is
 * a literal string or number. Otherwise prepend the
 * dynamic indicator (*).
 */
function formatSubPath(path) {
    const trimmed = path.trim();
    // invalid leading 0
    if (path.charAt(0) === '0' && isNaN(parseInt(path))) {
        return false;
    }
    return isLiteral(trimmed)
        ? stripQuotes(trimmed)
        : "*" /* PathCharTypes.ASTARISK */ + trimmed;
}
/**
 * Parse a string path into an array of segments
 */
function parse(path) {
    const keys = [];
    let index = -1;
    let mode = 0 /* States.BEFORE_PATH */;
    let subPathDepth = 0;
    let c;
    let key; // eslint-disable-line
    let newChar;
    let type;
    let transition;
    let action;
    let typeMap;
    const actions = [];
    actions[0 /* Actions.APPEND */] = () => {
        if (key === undefined) {
            key = newChar;
        }
        else {
            key += newChar;
        }
    };
    actions[1 /* Actions.PUSH */] = () => {
        if (key !== undefined) {
            keys.push(key);
            key = undefined;
        }
    };
    actions[2 /* Actions.INC_SUB_PATH_DEPTH */] = () => {
        actions[0 /* Actions.APPEND */]();
        subPathDepth++;
    };
    actions[3 /* Actions.PUSH_SUB_PATH */] = () => {
        if (subPathDepth > 0) {
            subPathDepth--;
            mode = 4 /* States.IN_SUB_PATH */;
            actions[0 /* Actions.APPEND */]();
        }
        else {
            subPathDepth = 0;
            if (key === undefined) {
                return false;
            }
            key = formatSubPath(key);
            if (key === false) {
                return false;
            }
            else {
                actions[1 /* Actions.PUSH */]();
            }
        }
    };
    function maybeUnescapeQuote() {
        const nextChar = path[index + 1];
        if ((mode === 5 /* States.IN_SINGLE_QUOTE */ &&
            nextChar === "'" /* PathCharTypes.SINGLE_QUOTE */) ||
            (mode === 6 /* States.IN_DOUBLE_QUOTE */ &&
                nextChar === "\"" /* PathCharTypes.DOUBLE_QUOTE */)) {
            index++;
            newChar = '\\' + nextChar;
            actions[0 /* Actions.APPEND */]();
            return true;
        }
    }
    while (mode !== null) {
        index++;
        c = path[index];
        if (c === '\\' && maybeUnescapeQuote()) {
            continue;
        }
        type = getPathCharType(c);
        typeMap = pathStateMachine[mode];
        transition = typeMap[type] || typeMap["l" /* PathCharTypes.ELSE */] || 8 /* States.ERROR */;
        // check parse error
        if (transition === 8 /* States.ERROR */) {
            return;
        }
        mode = transition[0];
        if (transition[1] !== undefined) {
            action = actions[transition[1]];
            if (action) {
                newChar = c;
                if (action() === false) {
                    return;
                }
            }
        }
        // check parse finish
        if (mode === 7 /* States.AFTER_PATH */) {
            return keys;
        }
    }
}
// path token cache
const cache = new Map();
/**
 * key-value message resolver
 *
 * @remarks
 * Resolves messages with the key-value structure. Note that messages with a hierarchical structure such as objects cannot be resolved
 *
 * @param obj - A target object to be resolved with path
 * @param path - A {@link Path | path} to resolve the value of message
 *
 * @returns A resolved {@link PathValue | path value}
 *
 * @VueI18nGeneral
 */
function resolveWithKeyValue(obj, path) {
    return isObject(obj) ? obj[path] : null;
}
/**
 * message resolver
 *
 * @remarks
 * Resolves messages. messages with a hierarchical structure such as objects can be resolved. This resolver is used in VueI18n as default.
 *
 * @param obj - A target object to be resolved with path
 * @param path - A {@link Path | path} to resolve the value of message
 *
 * @returns A resolved {@link PathValue | path value}
 *
 * @VueI18nGeneral
 */
function resolveValue(obj, path) {
    // check object
    if (!isObject(obj)) {
        return null;
    }
    // parse path
    let hit = cache.get(path);
    if (!hit) {
        hit = parse(path);
        if (hit) {
            cache.set(path, hit);
        }
    }
    // check hit
    if (!hit) {
        return null;
    }
    // resolve path value
    const len = hit.length;
    let last = obj;
    let i = 0;
    while (i < len) {
        const key = hit[i];
        /**
         * NOTE:
         * if `key` is intlify message format AST node key and `last` is intlify message format AST, skip it.
         * because the AST node is not a key-value structure.
         */
        if (AST_NODE_PROPS_KEYS.includes(key) && isMessageAST(last)) {
            return null;
        }
        const val = last[key];
        if (val === undefined) {
            return null;
        }
        if (isFunction(last)) {
            return null;
        }
        last = val;
        i++;
    }
    return last;
}

const CoreWarnCodes = {
    NOT_FOUND_KEY: 1,
    FALLBACK_TO_TRANSLATE: 2,
    CANNOT_FORMAT_NUMBER: 3,
    FALLBACK_TO_NUMBER_FORMAT: 4,
    CANNOT_FORMAT_DATE: 5,
    FALLBACK_TO_DATE_FORMAT: 6,
    EXPERIMENTAL_CUSTOM_MESSAGE_COMPILER: 7
};
const CORE_WARN_CODES_EXTEND_POINT = 8;
/** @internal */
const warnMessages = {
    [CoreWarnCodes.NOT_FOUND_KEY]: `Not found '{key}' key in '{locale}' locale messages.`,
    [CoreWarnCodes.FALLBACK_TO_TRANSLATE]: `Fall back to translate '{key}' key with '{target}' locale.`,
    [CoreWarnCodes.CANNOT_FORMAT_NUMBER]: `Cannot format a number value due to not supported Intl.NumberFormat.`,
    [CoreWarnCodes.FALLBACK_TO_NUMBER_FORMAT]: `Fall back to number format '{key}' key with '{target}' locale.`,
    [CoreWarnCodes.CANNOT_FORMAT_DATE]: `Cannot format a date value due to not supported Intl.DateTimeFormat.`,
    [CoreWarnCodes.FALLBACK_TO_DATE_FORMAT]: `Fall back to datetime format '{key}' key with '{target}' locale.`,
    [CoreWarnCodes.EXPERIMENTAL_CUSTOM_MESSAGE_COMPILER]: `This project is using Custom Message Compiler, which is an experimental feature. It may receive breaking changes or be removed in the future.`
};
function getWarnMessage(code, ...args) {
    return format$1(warnMessages[code], ...args);
}

/* eslint-disable @typescript-eslint/no-explicit-any */
/**
 * Intlify core-base version
 * @internal
 */
const VERSION = '11.1.3';
const NOT_REOSLVED = -1;
const DEFAULT_LOCALE = 'en-US';
const MISSING_RESOLVE_VALUE = '';
const capitalize = (str) => `${str.charAt(0).toLocaleUpperCase()}${str.substr(1)}`;
function getDefaultLinkedModifiers() {
    return {
        upper: (val, type) => {
            // prettier-ignore
            return type === 'text' && isString(val)
                ? val.toUpperCase()
                : type === 'vnode' && isObject(val) && '__v_isVNode' in val
                    ? val.children.toUpperCase()
                    : val;
        },
        lower: (val, type) => {
            // prettier-ignore
            return type === 'text' && isString(val)
                ? val.toLowerCase()
                : type === 'vnode' && isObject(val) && '__v_isVNode' in val
                    ? val.children.toLowerCase()
                    : val;
        },
        capitalize: (val, type) => {
            // prettier-ignore
            return (type === 'text' && isString(val)
                ? capitalize(val)
                : type === 'vnode' && isObject(val) && '__v_isVNode' in val
                    ? capitalize(val.children)
                    : val);
        }
    };
}
let _compiler;
function registerMessageCompiler(compiler) {
    _compiler = compiler;
}
let _resolver;
/**
 * Register the message resolver
 *
 * @param resolver - A {@link MessageResolver} function
 *
 * @VueI18nGeneral
 */
function registerMessageResolver(resolver) {
    _resolver = resolver;
}
let _fallbacker;
/**
 * Register the locale fallbacker
 *
 * @param fallbacker - A {@link LocaleFallbacker} function
 *
 * @VueI18nGeneral
 */
function registerLocaleFallbacker(fallbacker) {
    _fallbacker = fallbacker;
}
// Additional Meta for Intlify DevTools
let _additionalMeta = null;
/* #__NO_SIDE_EFFECTS__ */
const setAdditionalMeta = (meta) => {
    _additionalMeta = meta;
};
/* #__NO_SIDE_EFFECTS__ */
const getAdditionalMeta = () => _additionalMeta;
let _fallbackContext = null;
const setFallbackContext = (context) => {
    _fallbackContext = context;
};
const getFallbackContext = () => _fallbackContext;
// ID for CoreContext
let _cid = 0;
function createCoreContext(options = {}) {
    // setup options
    const onWarn = isFunction(options.onWarn) ? options.onWarn : warn;
    const version = isString(options.version) ? options.version : VERSION;
    const locale = isString(options.locale) || isFunction(options.locale)
        ? options.locale
        : DEFAULT_LOCALE;
    const _locale = isFunction(locale) ? DEFAULT_LOCALE : locale;
    const fallbackLocale = isArray(options.fallbackLocale) ||
        isPlainObject(options.fallbackLocale) ||
        isString(options.fallbackLocale) ||
        options.fallbackLocale === false
        ? options.fallbackLocale
        : _locale;
    const messages = isPlainObject(options.messages)
        ? options.messages
        : createResources(_locale);
    const datetimeFormats = isPlainObject(options.datetimeFormats)
            ? options.datetimeFormats
            : createResources(_locale)
        ;
    const numberFormats = isPlainObject(options.numberFormats)
            ? options.numberFormats
            : createResources(_locale)
        ;
    const modifiers = assign(create(), options.modifiers, getDefaultLinkedModifiers());
    const pluralRules = options.pluralRules || create();
    const missing = isFunction(options.missing) ? options.missing : null;
    const missingWarn = isBoolean(options.missingWarn) || isRegExp(options.missingWarn)
        ? options.missingWarn
        : true;
    const fallbackWarn = isBoolean(options.fallbackWarn) || isRegExp(options.fallbackWarn)
        ? options.fallbackWarn
        : true;
    const fallbackFormat = !!options.fallbackFormat;
    const unresolving = !!options.unresolving;
    const postTranslation = isFunction(options.postTranslation)
        ? options.postTranslation
        : null;
    const processor = isPlainObject(options.processor) ? options.processor : null;
    const warnHtmlMessage = isBoolean(options.warnHtmlMessage)
        ? options.warnHtmlMessage
        : true;
    const escapeParameter = !!options.escapeParameter;
    const messageCompiler = isFunction(options.messageCompiler)
        ? options.messageCompiler
        : _compiler;
    if (isFunction(options.messageCompiler)) {
        warnOnce(getWarnMessage(CoreWarnCodes.EXPERIMENTAL_CUSTOM_MESSAGE_COMPILER));
    }
    const messageResolver = isFunction(options.messageResolver)
        ? options.messageResolver
        : _resolver || resolveWithKeyValue;
    const localeFallbacker = isFunction(options.localeFallbacker)
        ? options.localeFallbacker
        : _fallbacker || fallbackWithSimple;
    const fallbackContext = isObject(options.fallbackContext)
        ? options.fallbackContext
        : undefined;
    // setup internal options
    const internalOptions = options;
    const __datetimeFormatters = isObject(internalOptions.__datetimeFormatters)
            ? internalOptions.__datetimeFormatters
            : new Map()
        ;
    const __numberFormatters = isObject(internalOptions.__numberFormatters)
            ? internalOptions.__numberFormatters
            : new Map()
        ;
    const __meta = isObject(internalOptions.__meta) ? internalOptions.__meta : {};
    _cid++;
    const context = {
        version,
        cid: _cid,
        locale,
        fallbackLocale,
        messages,
        modifiers,
        pluralRules,
        missing,
        missingWarn,
        fallbackWarn,
        fallbackFormat,
        unresolving,
        postTranslation,
        processor,
        warnHtmlMessage,
        escapeParameter,
        messageCompiler,
        messageResolver,
        localeFallbacker,
        fallbackContext,
        onWarn,
        __meta
    };
    {
        context.datetimeFormats = datetimeFormats;
        context.numberFormats = numberFormats;
        context.__datetimeFormatters = __datetimeFormatters;
        context.__numberFormatters = __numberFormatters;
    }
    // for vue-devtools timeline event
    {
        context.__v_emitter =
            internalOptions.__v_emitter != null
                ? internalOptions.__v_emitter
                : undefined;
    }
    // NOTE: experimental !!
    {
        initI18nDevTools(context, version, __meta);
    }
    return context;
}
const createResources = (locale) => ({ [locale]: create() });
/** @internal */
function isTranslateFallbackWarn(fallback, key) {
    return fallback instanceof RegExp ? fallback.test(key) : fallback;
}
/** @internal */
function isTranslateMissingWarn(missing, key) {
    return missing instanceof RegExp ? missing.test(key) : missing;
}
/** @internal */
function handleMissing(context, key, locale, missingWarn, type) {
    const { missing, onWarn } = context;
    // for vue-devtools timeline event
    {
        const emitter = context.__v_emitter;
        if (emitter) {
            emitter.emit('missing', {
                locale,
                key,
                type,
                groupId: `${type}:${key}`
            });
        }
    }
    if (missing !== null) {
        const ret = missing(context, locale, key, type);
        return isString(ret) ? ret : key;
    }
    else {
        if (isTranslateMissingWarn(missingWarn, key)) {
            onWarn(getWarnMessage(CoreWarnCodes.NOT_FOUND_KEY, { key, locale }));
        }
        return key;
    }
}
/** @internal */
function updateFallbackLocale(ctx, locale, fallback) {
    const context = ctx;
    context.__localeChainCache = new Map();
    ctx.localeFallbacker(ctx, fallback, locale);
}
/** @internal */
function isAlmostSameLocale(locale, compareLocale) {
    if (locale === compareLocale)
        return false;
    return locale.split('-')[0] === compareLocale.split('-')[0];
}
/** @internal */
function isImplicitFallback(targetLocale, locales) {
    const index = locales.indexOf(targetLocale);
    if (index === -1) {
        return false;
    }
    for (let i = index + 1; i < locales.length; i++) {
        if (isAlmostSameLocale(targetLocale, locales[i])) {
            return true;
        }
    }
    return false;
}
/* eslint-enable @typescript-eslint/no-explicit-any */

const intlDefined = typeof Intl !== 'undefined';
const Availabilities = {
    dateTimeFormat: intlDefined && typeof Intl.DateTimeFormat !== 'undefined',
    numberFormat: intlDefined && typeof Intl.NumberFormat !== 'undefined'
};

// implementation of `datetime` function
function datetime(context, ...args) {
    const { datetimeFormats, unresolving, fallbackLocale, onWarn, localeFallbacker } = context;
    const { __datetimeFormatters } = context;
    if (!Availabilities.dateTimeFormat) {
        onWarn(getWarnMessage(CoreWarnCodes.CANNOT_FORMAT_DATE));
        return MISSING_RESOLVE_VALUE;
    }
    const [key, value, options, overrides] = parseDateTimeArgs(...args);
    const missingWarn = isBoolean(options.missingWarn)
        ? options.missingWarn
        : context.missingWarn;
    const fallbackWarn = isBoolean(options.fallbackWarn)
        ? options.fallbackWarn
        : context.fallbackWarn;
    const part = !!options.part;
    const locale = getLocale(context, options);
    const locales = localeFallbacker(context, // eslint-disable-line @typescript-eslint/no-explicit-any
    fallbackLocale, locale);
    if (!isString(key) || key === '') {
        return new Intl.DateTimeFormat(locale, overrides).format(value);
    }
    // resolve format
    let datetimeFormat = {};
    let targetLocale;
    let format = null;
    let from = locale;
    let to = null;
    const type = 'datetime format';
    for (let i = 0; i < locales.length; i++) {
        targetLocale = to = locales[i];
        if (locale !== targetLocale &&
            isTranslateFallbackWarn(fallbackWarn, key)) {
            onWarn(getWarnMessage(CoreWarnCodes.FALLBACK_TO_DATE_FORMAT, {
                key,
                target: targetLocale
            }));
        }
        // for vue-devtools timeline event
        if (locale !== targetLocale) {
            const emitter = context.__v_emitter;
            if (emitter) {
                emitter.emit('fallback', {
                    type,
                    key,
                    from,
                    to,
                    groupId: `${type}:${key}`
                });
            }
        }
        datetimeFormat =
            datetimeFormats[targetLocale] || {};
        format = datetimeFormat[key];
        if (isPlainObject(format))
            break;
        handleMissing(context, key, targetLocale, missingWarn, type); // eslint-disable-line @typescript-eslint/no-explicit-any
        from = to;
    }
    // checking format and target locale
    if (!isPlainObject(format) || !isString(targetLocale)) {
        return unresolving ? NOT_REOSLVED : key;
    }
    let id = `${targetLocale}__${key}`;
    if (!isEmptyObject(overrides)) {
        id = `${id}__${JSON.stringify(overrides)}`;
    }
    let formatter = __datetimeFormatters.get(id);
    if (!formatter) {
        formatter = new Intl.DateTimeFormat(targetLocale, assign({}, format, overrides));
        __datetimeFormatters.set(id, formatter);
    }
    return !part ? formatter.format(value) : formatter.formatToParts(value);
}
/** @internal */
const DATETIME_FORMAT_OPTIONS_KEYS = [
    'localeMatcher',
    'weekday',
    'era',
    'year',
    'month',
    'day',
    'hour',
    'minute',
    'second',
    'timeZoneName',
    'formatMatcher',
    'hour12',
    'timeZone',
    'dateStyle',
    'timeStyle',
    'calendar',
    'dayPeriod',
    'numberingSystem',
    'hourCycle',
    'fractionalSecondDigits'
];
/** @internal */
function parseDateTimeArgs(...args) {
    const [arg1, arg2, arg3, arg4] = args;
    const options = create();
    let overrides = create();
    let value;
    if (isString(arg1)) {
        // Only allow ISO strings - other date formats are often supported,
        // but may cause different results in different browsers.
        const matches = arg1.match(/(\d{4}-\d{2}-\d{2})(T|\s)?(.*)/);
        if (!matches) {
            throw createCoreError(CoreErrorCodes.INVALID_ISO_DATE_ARGUMENT);
        }
        // Some browsers can not parse the iso datetime separated by space,
        // this is a compromise solution by replace the 'T'/' ' with 'T'
        const dateTime = matches[3]
            ? matches[3].trim().startsWith('T')
                ? `${matches[1].trim()}${matches[3].trim()}`
                : `${matches[1].trim()}T${matches[3].trim()}`
            : matches[1].trim();
        value = new Date(dateTime);
        try {
            // This will fail if the date is not valid
            value.toISOString();
        }
        catch {
            throw createCoreError(CoreErrorCodes.INVALID_ISO_DATE_ARGUMENT);
        }
    }
    else if (isDate(arg1)) {
        if (isNaN(arg1.getTime())) {
            throw createCoreError(CoreErrorCodes.INVALID_DATE_ARGUMENT);
        }
        value = arg1;
    }
    else if (isNumber(arg1)) {
        value = arg1;
    }
    else {
        throw createCoreError(CoreErrorCodes.INVALID_ARGUMENT);
    }
    if (isString(arg2)) {
        options.key = arg2;
    }
    else if (isPlainObject(arg2)) {
        Object.keys(arg2).forEach(key => {
            if (DATETIME_FORMAT_OPTIONS_KEYS.includes(key)) {
                overrides[key] = arg2[key];
            }
            else {
                options[key] = arg2[key];
            }
        });
    }
    if (isString(arg3)) {
        options.locale = arg3;
    }
    else if (isPlainObject(arg3)) {
        overrides = arg3;
    }
    if (isPlainObject(arg4)) {
        overrides = arg4;
    }
    return [options.key || '', value, options, overrides];
}
/** @internal */
function clearDateTimeFormat(ctx, locale, format) {
    const context = ctx;
    for (const key in format) {
        const id = `${locale}__${key}`;
        if (!context.__datetimeFormatters.has(id)) {
            continue;
        }
        context.__datetimeFormatters.delete(id);
    }
}

// implementation of `number` function
function number(context, ...args) {
    const { numberFormats, unresolving, fallbackLocale, onWarn, localeFallbacker } = context;
    const { __numberFormatters } = context;
    if (!Availabilities.numberFormat) {
        onWarn(getWarnMessage(CoreWarnCodes.CANNOT_FORMAT_NUMBER));
        return MISSING_RESOLVE_VALUE;
    }
    const [key, value, options, overrides] = parseNumberArgs(...args);
    const missingWarn = isBoolean(options.missingWarn)
        ? options.missingWarn
        : context.missingWarn;
    const fallbackWarn = isBoolean(options.fallbackWarn)
        ? options.fallbackWarn
        : context.fallbackWarn;
    const part = !!options.part;
    const locale = getLocale(context, options);
    const locales = localeFallbacker(context, // eslint-disable-line @typescript-eslint/no-explicit-any
    fallbackLocale, locale);
    if (!isString(key) || key === '') {
        return new Intl.NumberFormat(locale, overrides).format(value);
    }
    // resolve format
    let numberFormat = {};
    let targetLocale;
    let format = null;
    let from = locale;
    let to = null;
    const type = 'number format';
    for (let i = 0; i < locales.length; i++) {
        targetLocale = to = locales[i];
        if (locale !== targetLocale &&
            isTranslateFallbackWarn(fallbackWarn, key)) {
            onWarn(getWarnMessage(CoreWarnCodes.FALLBACK_TO_NUMBER_FORMAT, {
                key,
                target: targetLocale
            }));
        }
        // for vue-devtools timeline event
        if (locale !== targetLocale) {
            const emitter = context.__v_emitter;
            if (emitter) {
                emitter.emit('fallback', {
                    type,
                    key,
                    from,
                    to,
                    groupId: `${type}:${key}`
                });
            }
        }
        numberFormat =
            numberFormats[targetLocale] || {};
        format = numberFormat[key];
        if (isPlainObject(format))
            break;
        handleMissing(context, key, targetLocale, missingWarn, type); // eslint-disable-line @typescript-eslint/no-explicit-any
        from = to;
    }
    // checking format and target locale
    if (!isPlainObject(format) || !isString(targetLocale)) {
        return unresolving ? NOT_REOSLVED : key;
    }
    let id = `${targetLocale}__${key}`;
    if (!isEmptyObject(overrides)) {
        id = `${id}__${JSON.stringify(overrides)}`;
    }
    let formatter = __numberFormatters.get(id);
    if (!formatter) {
        formatter = new Intl.NumberFormat(targetLocale, assign({}, format, overrides));
        __numberFormatters.set(id, formatter);
    }
    return !part ? formatter.format(value) : formatter.formatToParts(value);
}
/** @internal */
const NUMBER_FORMAT_OPTIONS_KEYS = [
    'localeMatcher',
    'style',
    'currency',
    'currencyDisplay',
    'currencySign',
    'useGrouping',
    'minimumIntegerDigits',
    'minimumFractionDigits',
    'maximumFractionDigits',
    'minimumSignificantDigits',
    'maximumSignificantDigits',
    'compactDisplay',
    'notation',
    'signDisplay',
    'unit',
    'unitDisplay',
    'roundingMode',
    'roundingPriority',
    'roundingIncrement',
    'trailingZeroDisplay'
];
/** @internal */
function parseNumberArgs(...args) {
    const [arg1, arg2, arg3, arg4] = args;
    const options = create();
    let overrides = create();
    if (!isNumber(arg1)) {
        throw createCoreError(CoreErrorCodes.INVALID_ARGUMENT);
    }
    const value = arg1;
    if (isString(arg2)) {
        options.key = arg2;
    }
    else if (isPlainObject(arg2)) {
        Object.keys(arg2).forEach(key => {
            if (NUMBER_FORMAT_OPTIONS_KEYS.includes(key)) {
                overrides[key] = arg2[key];
            }
            else {
                options[key] = arg2[key];
            }
        });
    }
    if (isString(arg3)) {
        options.locale = arg3;
    }
    else if (isPlainObject(arg3)) {
        overrides = arg3;
    }
    if (isPlainObject(arg4)) {
        overrides = arg4;
    }
    return [options.key || '', value, options, overrides];
}
/** @internal */
function clearNumberFormat(ctx, locale, format) {
    const context = ctx;
    for (const key in format) {
        const id = `${locale}__${key}`;
        if (!context.__numberFormatters.has(id)) {
            continue;
        }
        context.__numberFormatters.delete(id);
    }
}

const DEFAULT_MODIFIER = (str) => str;
const DEFAULT_MESSAGE = (ctx) => ''; // eslint-disable-line
const DEFAULT_MESSAGE_DATA_TYPE = 'text';
const DEFAULT_NORMALIZE = (values) => values.length === 0 ? '' : join(values);
const DEFAULT_INTERPOLATE = toDisplayString;
function pluralDefault(choice, choicesLength) {
    choice = Math.abs(choice);
    if (choicesLength === 2) {
        // prettier-ignore
        return choice
            ? choice > 1
                ? 1
                : 0
            : 1;
    }
    return choice ? Math.min(choice, 2) : 0;
}
function getPluralIndex(options) {
    // prettier-ignore
    const index = isNumber(options.pluralIndex)
        ? options.pluralIndex
        : -1;
    // prettier-ignore
    return options.named && (isNumber(options.named.count) || isNumber(options.named.n))
        ? isNumber(options.named.count)
            ? options.named.count
            : isNumber(options.named.n)
                ? options.named.n
                : index
        : index;
}
function normalizeNamed(pluralIndex, props) {
    if (!props.count) {
        props.count = pluralIndex;
    }
    if (!props.n) {
        props.n = pluralIndex;
    }
}
function createMessageContext(options = {}) {
    const locale = options.locale;
    const pluralIndex = getPluralIndex(options);
    const pluralRule = isObject(options.pluralRules) &&
        isString(locale) &&
        isFunction(options.pluralRules[locale])
        ? options.pluralRules[locale]
        : pluralDefault;
    const orgPluralRule = isObject(options.pluralRules) &&
        isString(locale) &&
        isFunction(options.pluralRules[locale])
        ? pluralDefault
        : undefined;
    const plural = (messages) => {
        return messages[pluralRule(pluralIndex, messages.length, orgPluralRule)];
    };
    const _list = options.list || [];
    const list = (index) => _list[index];
    // eslint-disable-next-line @typescript-eslint/no-explicit-any
    const _named = options.named || create();
    isNumber(options.pluralIndex) && normalizeNamed(pluralIndex, _named);
    const named = (key) => _named[key];
    function message(key, useLinked) {
        // prettier-ignore
        const msg = isFunction(options.messages)
            ? options.messages(key, !!useLinked)
            : isObject(options.messages)
                ? options.messages[key]
                : false;
        return !msg
            ? options.parent
                ? options.parent.message(key) // resolve from parent messages
                : DEFAULT_MESSAGE
            : msg;
    }
    const _modifier = (name) => options.modifiers
        ? options.modifiers[name]
        : DEFAULT_MODIFIER;
    const normalize = isPlainObject(options.processor) && isFunction(options.processor.normalize)
        ? options.processor.normalize
        : DEFAULT_NORMALIZE;
    const interpolate = isPlainObject(options.processor) &&
        isFunction(options.processor.interpolate)
        ? options.processor.interpolate
        : DEFAULT_INTERPOLATE;
    const type = isPlainObject(options.processor) && isString(options.processor.type)
        ? options.processor.type
        : DEFAULT_MESSAGE_DATA_TYPE;
    const linked = (key, ...args) => {
        const [arg1, arg2] = args;
        let type = 'text';
        let modifier = '';
        if (args.length === 1) {
            if (isObject(arg1)) {
                modifier = arg1.modifier || modifier;
                type = arg1.type || type;
            }
            else if (isString(arg1)) {
                modifier = arg1 || modifier;
            }
        }
        else if (args.length === 2) {
            if (isString(arg1)) {
                modifier = arg1 || modifier;
            }
            if (isString(arg2)) {
                type = arg2 || type;
            }
        }
        const ret = message(key, true)(ctx);
        const msg = 
        // The message in vnode resolved with linked are returned as an array by processor.nomalize
        type === 'vnode' && isArray(ret) && modifier
            ? ret[0]
            : ret;
        return modifier ? _modifier(modifier)(msg, type) : msg;
    };
    const ctx = {
        ["list" /* HelperNameMap.LIST */]: list,
        ["named" /* HelperNameMap.NAMED */]: named,
        ["plural" /* HelperNameMap.PLURAL */]: plural,
        ["linked" /* HelperNameMap.LINKED */]: linked,
        ["message" /* HelperNameMap.MESSAGE */]: message,
        ["type" /* HelperNameMap.TYPE */]: type,
        ["interpolate" /* HelperNameMap.INTERPOLATE */]: interpolate,
        ["normalize" /* HelperNameMap.NORMALIZE */]: normalize,
        ["values" /* HelperNameMap.VALUES */]: assign(create(), _list, _named)
    };
    return ctx;
}

const NOOP_MESSAGE_FUNCTION = () => '';
const isMessageFunction = (val) => isFunction(val);
// implementation of `translate` function
function translate(context, ...args) {
    const { fallbackFormat, postTranslation, unresolving, messageCompiler, fallbackLocale, messages } = context;
    const [key, options] = parseTranslateArgs(...args);
    const missingWarn = isBoolean(options.missingWarn)
        ? options.missingWarn
        : context.missingWarn;
    const fallbackWarn = isBoolean(options.fallbackWarn)
        ? options.fallbackWarn
        : context.fallbackWarn;
    const escapeParameter = isBoolean(options.escapeParameter)
        ? options.escapeParameter
        : context.escapeParameter;
    const resolvedMessage = !!options.resolvedMessage;
    // prettier-ignore
    const defaultMsgOrKey = isString(options.default) || isBoolean(options.default) // default by function option
        ? !isBoolean(options.default)
            ? options.default
            : (!messageCompiler ? () => key : key)
        : fallbackFormat // default by `fallbackFormat` option
            ? (!messageCompiler ? () => key : key)
            : null;
    const enableDefaultMsg = fallbackFormat ||
        (defaultMsgOrKey != null &&
            (isString(defaultMsgOrKey) || isFunction(defaultMsgOrKey)));
    const locale = getLocale(context, options);
    // escape params
    escapeParameter && escapeParams(options);
    // resolve message format
    // eslint-disable-next-line prefer-const
    let [formatScope, targetLocale, message] = !resolvedMessage
        ? resolveMessageFormat(context, key, locale, fallbackLocale, fallbackWarn, missingWarn)
        : [
            key,
            locale,
            messages[locale] || create()
        ];
    // NOTE:
    //  Fix to work around `ssrTransfrom` bug in Vite.
    //  https://github.com/vitejs/vite/issues/4306
    //  To get around this, use temporary variables.
    //  https://github.com/nuxt/framework/issues/1461#issuecomment-954606243
    let format = formatScope;
    // if you use default message, set it as message format!
    let cacheBaseKey = key;
    if (!resolvedMessage &&
        !(isString(format) ||
            isMessageAST(format) ||
            isMessageFunction(format))) {
        if (enableDefaultMsg) {
            format = defaultMsgOrKey;
            cacheBaseKey = format;
        }
    }
    // checking message format and target locale
    if (!resolvedMessage &&
        (!(isString(format) ||
            isMessageAST(format) ||
            isMessageFunction(format)) ||
            !isString(targetLocale))) {
        return unresolving ? NOT_REOSLVED : key;
    }
    // TODO: refactor
    if (isString(format) && context.messageCompiler == null) {
        warn(`The message format compilation is not supported in this build. ` +
            `Because message compiler isn't included. ` +
            `You need to pre-compilation all message format. ` +
            `So translate function return '${key}'.`);
        return key;
    }
    // setup compile error detecting
    let occurred = false;
    const onError = () => {
        occurred = true;
    };
    // compile message format
    const msg = !isMessageFunction(format)
        ? compileMessageFormat(context, key, targetLocale, format, cacheBaseKey, onError)
        : format;
    // if occurred compile error, return the message format
    if (occurred) {
        return format;
    }
    // evaluate message with context
    const ctxOptions = getMessageContextOptions(context, targetLocale, message, options);
    const msgContext = createMessageContext(ctxOptions);
    const messaged = evaluateMessage(context, msg, msgContext);
    // if use post translation option, proceed it with handler
    const ret = postTranslation
        ? postTranslation(messaged, key)
        : messaged;
    // NOTE: experimental !!
    {
        // prettier-ignore
        const payloads = {
            timestamp: Date.now(),
            key: isString(key)
                ? key
                : isMessageFunction(format)
                    ? format.key
                    : '',
            locale: targetLocale || (isMessageFunction(format)
                ? format.locale
                : ''),
            format: isString(format)
                ? format
                : isMessageFunction(format)
                    ? format.source
                    : '',
            message: ret
        };
        payloads.meta = assign({}, context.__meta, getAdditionalMeta() || {});
        translateDevTools(payloads);
    }
    return ret;
}
function escapeParams(options) {
    if (isArray(options.list)) {
        options.list = options.list.map(item => isString(item) ? escapeHtml(item) : item);
    }
    else if (isObject(options.named)) {
        Object.keys(options.named).forEach(key => {
            if (isString(options.named[key])) {
                options.named[key] = escapeHtml(options.named[key]);
            }
        });
    }
}
function resolveMessageFormat(context, key, locale, fallbackLocale, fallbackWarn, missingWarn) {
    const { messages, onWarn, messageResolver: resolveValue, localeFallbacker } = context;
    const locales = localeFallbacker(context, fallbackLocale, locale); // eslint-disable-line @typescript-eslint/no-explicit-any
    let message = create();
    let targetLocale;
    let format = null;
    let from = locale;
    let to = null;
    const type = 'translate';
    for (let i = 0; i < locales.length; i++) {
        targetLocale = to = locales[i];
        if (locale !== targetLocale &&
            !isAlmostSameLocale(locale, targetLocale) &&
            isTranslateFallbackWarn(fallbackWarn, key)) {
            onWarn(getWarnMessage(CoreWarnCodes.FALLBACK_TO_TRANSLATE, {
                key,
                target: targetLocale
            }));
        }
        // for vue-devtools timeline event
        if (locale !== targetLocale) {
            const emitter = context.__v_emitter;
            if (emitter) {
                emitter.emit('fallback', {
                    type,
                    key,
                    from,
                    to,
                    groupId: `${type}:${key}`
                });
            }
        }
        message =
            messages[targetLocale] || create();
        // for vue-devtools timeline event
        let start = null;
        let startTag;
        let endTag;
        if (inBrowser) {
            start = window.performance.now();
            startTag = 'intlify-message-resolve-start';
            endTag = 'intlify-message-resolve-end';
            mark && mark(startTag);
        }
        if ((format = resolveValue(message, key)) === null) {
            // if null, resolve with object key path
            format = message[key]; // eslint-disable-line @typescript-eslint/no-explicit-any
        }
        // for vue-devtools timeline event
        if (inBrowser) {
            const end = window.performance.now();
            const emitter = context.__v_emitter;
            if (emitter && start && format) {
                emitter.emit('message-resolve', {
                    type: 'message-resolve',
                    key,
                    message: format,
                    time: end - start,
                    groupId: `${type}:${key}`
                });
            }
            if (startTag && endTag && mark && measure) {
                mark(endTag);
                measure('intlify message resolve', startTag, endTag);
            }
        }
        if (isString(format) || isMessageAST(format) || isMessageFunction(format)) {
            break;
        }
        if (!isImplicitFallback(targetLocale, locales)) {
            const missingRet = handleMissing(context, // eslint-disable-line @typescript-eslint/no-explicit-any
            key, targetLocale, missingWarn, type);
            if (missingRet !== key) {
                format = missingRet;
            }
        }
        from = to;
    }
    return [format, targetLocale, message];
}
function compileMessageFormat(context, key, targetLocale, format, cacheBaseKey, onError) {
    const { messageCompiler, warnHtmlMessage } = context;
    if (isMessageFunction(format)) {
        const msg = format;
        msg.locale = msg.locale || targetLocale;
        msg.key = msg.key || key;
        return msg;
    }
    if (messageCompiler == null) {
        const msg = (() => format);
        msg.locale = targetLocale;
        msg.key = key;
        return msg;
    }
    // for vue-devtools timeline event
    let start = null;
    let startTag;
    let endTag;
    if (inBrowser) {
        start = window.performance.now();
        startTag = 'intlify-message-compilation-start';
        endTag = 'intlify-message-compilation-end';
        mark && mark(startTag);
    }
    const msg = messageCompiler(format, getCompileContext(context, targetLocale, cacheBaseKey, format, warnHtmlMessage, onError));
    // for vue-devtools timeline event
    if (inBrowser) {
        const end = window.performance.now();
        const emitter = context.__v_emitter;
        if (emitter && start) {
            emitter.emit('message-compilation', {
                type: 'message-compilation',
                message: format,
                time: end - start,
                groupId: `${'translate'}:${key}`
            });
        }
        if (startTag && endTag && mark && measure) {
            mark(endTag);
            measure('intlify message compilation', startTag, endTag);
        }
    }
    msg.locale = targetLocale;
    msg.key = key;
    msg.source = format;
    return msg;
}
function evaluateMessage(context, msg, msgCtx) {
    // for vue-devtools timeline event
    let start = null;
    let startTag;
    let endTag;
    if (inBrowser) {
        start = window.performance.now();
        startTag = 'intlify-message-evaluation-start';
        endTag = 'intlify-message-evaluation-end';
        mark && mark(startTag);
    }
    const messaged = msg(msgCtx);
    // for vue-devtools timeline event
    if (inBrowser) {
        const end = window.performance.now();
        const emitter = context.__v_emitter;
        if (emitter && start) {
            emitter.emit('message-evaluation', {
                type: 'message-evaluation',
                value: messaged,
                time: end - start,
                groupId: `${'translate'}:${msg.key}`
            });
        }
        if (startTag && endTag && mark && measure) {
            mark(endTag);
            measure('intlify message evaluation', startTag, endTag);
        }
    }
    return messaged;
}
/** @internal */
function parseTranslateArgs(...args) {
    const [arg1, arg2, arg3] = args;
    const options = create();
    if (!isString(arg1) &&
        !isNumber(arg1) &&
        !isMessageFunction(arg1) &&
        !isMessageAST(arg1)) {
        throw createCoreError(CoreErrorCodes.INVALID_ARGUMENT);
    }
    // prettier-ignore
    const key = isNumber(arg1)
        ? String(arg1)
        : isMessageFunction(arg1)
            ? arg1
            : arg1;
    if (isNumber(arg2)) {
        options.plural = arg2;
    }
    else if (isString(arg2)) {
        options.default = arg2;
    }
    else if (isPlainObject(arg2) && !isEmptyObject(arg2)) {
        options.named = arg2;
    }
    else if (isArray(arg2)) {
        options.list = arg2;
    }
    if (isNumber(arg3)) {
        options.plural = arg3;
    }
    else if (isString(arg3)) {
        options.default = arg3;
    }
    else if (isPlainObject(arg3)) {
        assign(options, arg3);
    }
    return [key, options];
}
function getCompileContext(context, locale, key, source, warnHtmlMessage, onError) {
    return {
        locale,
        key,
        warnHtmlMessage,
        onError: (err) => {
            onError && onError(err);
            {
                const _source = getSourceForCodeFrame(source);
                const message = `Message compilation error: ${err.message}`;
                const codeFrame = err.location &&
                    _source &&
                    generateCodeFrame(_source, err.location.start.offset, err.location.end.offset);
                const emitter = context.__v_emitter;
                if (emitter && _source) {
                    emitter.emit('compile-error', {
                        message: _source,
                        error: err.message,
                        start: err.location && err.location.start.offset,
                        end: err.location && err.location.end.offset,
                        groupId: `${'translate'}:${key}`
                    });
                }
                console.error(codeFrame ? `${message}\n${codeFrame}` : message);
            }
        },
        onCacheKey: (source) => generateFormatCacheKey(locale, key, source)
    };
}
function getSourceForCodeFrame(source) {
    if (isString(source)) {
        return source;
    }
    else {
        if (source.loc && source.loc.source) {
            return source.loc.source;
        }
    }
}
function getMessageContextOptions(context, locale, message, options) {
    const { modifiers, pluralRules, messageResolver: resolveValue, fallbackLocale, fallbackWarn, missingWarn, fallbackContext } = context;
    const resolveMessage = (key, useLinked) => {
        let val = resolveValue(message, key);
        // fallback
        if (val == null && (fallbackContext || useLinked)) {
            const [, , message] = resolveMessageFormat(fallbackContext || context, // NOTE: if has fallbackContext, fallback to root, else if use linked, fallback to local context
            key, locale, fallbackLocale, fallbackWarn, missingWarn);
            val = resolveValue(message, key);
        }
        if (isString(val) || isMessageAST(val)) {
            let occurred = false;
            const onError = () => {
                occurred = true;
            };
            const msg = compileMessageFormat(context, key, locale, val, key, onError);
            return !occurred
                ? msg
                : NOOP_MESSAGE_FUNCTION;
        }
        else if (isMessageFunction(val)) {
            return val;
        }
        else {
            // TODO: should be implemented warning message
            return NOOP_MESSAGE_FUNCTION;
        }
    };
    const ctxOptions = {
        locale,
        modifiers,
        pluralRules,
        messages: resolveMessage
    };
    if (context.processor) {
        ctxOptions.processor = context.processor;
    }
    if (options.list) {
        ctxOptions.list = options.list;
    }
    if (options.named) {
        ctxOptions.named = options.named;
    }
    if (isNumber(options.plural)) {
        ctxOptions.pluralIndex = options.plural;
    }
    return ctxOptions;
}

export { AST_NODE_PROPS_KEYS, CORE_ERROR_CODES_EXTEND_POINT, CORE_WARN_CODES_EXTEND_POINT, CompileErrorCodes, CoreErrorCodes, CoreWarnCodes, DATETIME_FORMAT_OPTIONS_KEYS, DEFAULT_LOCALE, DEFAULT_MESSAGE_DATA_TYPE, MISSING_RESOLVE_VALUE, NOT_REOSLVED, NUMBER_FORMAT_OPTIONS_KEYS, VERSION, clearCompileCache, clearDateTimeFormat, clearNumberFormat, compile, createCompileError, createCoreContext, createCoreError, createMessageContext, datetime, fallbackWithLocaleChain, fallbackWithSimple, getAdditionalMeta, getDevToolsHook, getFallbackContext, getLocale, getWarnMessage, handleMissing, initI18nDevTools, isAlmostSameLocale, isImplicitFallback, isMessageAST, isMessageFunction, isTranslateFallbackWarn, isTranslateMissingWarn, number, parse, parseDateTimeArgs, parseNumberArgs, parseTranslateArgs, registerLocaleFallbacker, registerMessageCompiler, registerMessageResolver, resolveLocale, resolveValue, resolveWithKeyValue, setAdditionalMeta, setDevToolsHook, setFallbackContext, translate, translateDevTools, updateFallbackLocale };