rollup
Version:
Next-generation ES module bundler
1,117 lines (1,019 loc) • 691 kB
JavaScript
/*
@license
Rollup.js v2.7.4
Wed, 29 Apr 2020 18:52:21 GMT - commit 7cf6f9890f294d3b97cbb2d713e673ce220e6b1a
https://github.com/rollup/rollup
Released under the MIT License.
*/
'use strict';
function _interopNamespace(e) {
if (e && e.__esModule) { return e; } else {
var n = {};
if (e) {
Object.keys(e).forEach(function (k) {
n[k] =e [k];
});
}
n['default'] = e;
return n;
}
}
var path = require('path');
var crypto = require('crypto');
var fs = require('fs');
var events = require('events');
var version = "2.7.4";
function unwrapExports (x) {
return x && x.__esModule && Object.prototype.hasOwnProperty.call(x, 'default') ? x['default'] : x;
}
function createCommonjsModule(fn, module) {
return module = { exports: {} }, fn(module, module.exports), module.exports;
}
function getCjsExportFromNamespace (n) {
return n && n['default'] || n;
}
function commonjsRequire () {
throw new Error('Dynamic requires are not currently supported by @rollup/plugin-commonjs');
}
function getLocator(source, options) {
if (options === void 0) { options = {}; }
var offsetLine = options.offsetLine || 0;
var offsetColumn = options.offsetColumn || 0;
var originalLines = source.split('\n');
var start = 0;
var lineRanges = originalLines.map(function (line, i) {
var end = start + line.length + 1;
var range = { start: start, end: end, line: i };
start = end;
return range;
});
var i = 0;
function rangeContains(range, index) {
return range.start <= index && index < range.end;
}
function getLocation(range, index) {
return { line: offsetLine + range.line, column: offsetColumn + index - range.start, character: index };
}
function locate(search, startIndex) {
if (typeof search === 'string') {
search = source.indexOf(search, startIndex || 0);
}
var range = lineRanges[i];
var d = search >= range.end ? 1 : -1;
while (range) {
if (rangeContains(range, search))
return getLocation(range, search);
i += d;
range = lineRanges[i];
}
}
return locate;
}
function locate(source, search, options) {
if (typeof options === 'number') {
throw new Error('locate takes a { startIndex, offsetLine, offsetColumn } object as the third argument');
}
return getLocator(source, options)(search, options && options.startIndex);
}
function spaces(i) {
let result = '';
while (i--)
result += ' ';
return result;
}
function tabsToSpaces(str) {
return str.replace(/^\t+/, match => match.split('\t').join(' '));
}
function getCodeFrame(source, line, column) {
let lines = source.split('\n');
const frameStart = Math.max(0, line - 3);
let frameEnd = Math.min(line + 2, lines.length);
lines = lines.slice(frameStart, frameEnd);
while (!/\S/.test(lines[lines.length - 1])) {
lines.pop();
frameEnd -= 1;
}
const digits = String(frameEnd).length;
return lines
.map((str, i) => {
const isErrorLine = frameStart + i + 1 === line;
let lineNum = String(i + frameStart + 1);
while (lineNum.length < digits)
lineNum = ` ${lineNum}`;
if (isErrorLine) {
const indicator = spaces(digits + 2 + tabsToSpaces(str.slice(0, column)).length) + '^';
return `${lineNum}: ${tabsToSpaces(str)}\n${indicator}`;
}
return `${lineNum}: ${tabsToSpaces(str)}`;
})
.join('\n');
}
const absolutePath = /^(?:\/|(?:[A-Za-z]:)?[\\|/])/;
const relativePath = /^\.?\.\//;
function isAbsolute(path) {
return absolutePath.test(path);
}
function isRelative(path) {
return relativePath.test(path);
}
function normalize(path) {
if (path.indexOf('\\') == -1)
return path;
return path.replace(/\\/g, '/');
}
function sanitizeFileName(name) {
return name.replace(/[\0?*]/g, '_');
}
function getAliasName(id) {
const base = path.basename(id);
return base.substr(0, base.length - path.extname(id).length);
}
function relativeId(id) {
if (typeof process === 'undefined' || !isAbsolute(id))
return id;
return path.relative(process.cwd(), id);
}
function isPlainPathFragment(name) {
// not starting with "/", "./", "../"
return (name[0] !== '/' &&
!(name[0] === '.' && (name[1] === '/' || name[1] === '.')) &&
sanitizeFileName(name) === name &&
!isAbsolute(name));
}
function error(base) {
if (!(base instanceof Error))
base = Object.assign(new Error(base.message), base);
throw base;
}
function augmentCodeLocation(object, pos, source, id) {
if (typeof pos === 'object') {
const { line, column } = pos;
object.loc = { file: id, line, column };
}
else {
object.pos = pos;
const { line, column } = locate(source, pos, { offsetLine: 1 });
object.loc = { file: id, line, column };
}
if (object.frame === undefined) {
const { line, column } = object.loc;
object.frame = getCodeFrame(source, line, column);
}
}
var Errors;
(function (Errors) {
Errors["ASSET_NOT_FINALISED"] = "ASSET_NOT_FINALISED";
Errors["ASSET_NOT_FOUND"] = "ASSET_NOT_FOUND";
Errors["ASSET_SOURCE_ALREADY_SET"] = "ASSET_SOURCE_ALREADY_SET";
Errors["ASSET_SOURCE_MISSING"] = "ASSET_SOURCE_MISSING";
Errors["BAD_LOADER"] = "BAD_LOADER";
Errors["CANNOT_EMIT_FROM_OPTIONS_HOOK"] = "CANNOT_EMIT_FROM_OPTIONS_HOOK";
Errors["CHUNK_NOT_GENERATED"] = "CHUNK_NOT_GENERATED";
Errors["DEPRECATED_FEATURE"] = "DEPRECATED_FEATURE";
Errors["FILE_NOT_FOUND"] = "FILE_NOT_FOUND";
Errors["FILE_NAME_CONFLICT"] = "FILE_NAME_CONFLICT";
Errors["INPUT_HOOK_IN_OUTPUT_PLUGIN"] = "INPUT_HOOK_IN_OUTPUT_PLUGIN";
Errors["INVALID_CHUNK"] = "INVALID_CHUNK";
Errors["INVALID_EXPORT_OPTION"] = "INVALID_EXPORT_OPTION";
Errors["INVALID_EXTERNAL_ID"] = "INVALID_EXTERNAL_ID";
Errors["INVALID_OPTION"] = "INVALID_OPTION";
Errors["INVALID_PLUGIN_HOOK"] = "INVALID_PLUGIN_HOOK";
Errors["INVALID_ROLLUP_PHASE"] = "INVALID_ROLLUP_PHASE";
Errors["MIXED_EXPORTS"] = "MIXED_EXPORTS";
Errors["NAMESPACE_CONFLICT"] = "NAMESPACE_CONFLICT";
Errors["PLUGIN_ERROR"] = "PLUGIN_ERROR";
Errors["UNRESOLVED_ENTRY"] = "UNRESOLVED_ENTRY";
Errors["UNRESOLVED_IMPORT"] = "UNRESOLVED_IMPORT";
Errors["VALIDATION_ERROR"] = "VALIDATION_ERROR";
Errors["EXTERNAL_SYNTHETIC_EXPORTS"] = "EXTERNAL_SYNTHETIC_EXPORTS";
Errors["SYNTHETIC_NAMED_EXPORTS_NEED_DEFAULT"] = "SYNTHETIC_NAMED_EXPORTS_NEED_DEFAULT";
})(Errors || (Errors = {}));
function errAssetNotFinalisedForFileName(name) {
return {
code: Errors.ASSET_NOT_FINALISED,
message: `Plugin error - Unable to get file name for asset "${name}". Ensure that the source is set and that generate is called first.`
};
}
function errCannotEmitFromOptionsHook() {
return {
code: Errors.CANNOT_EMIT_FROM_OPTIONS_HOOK,
message: `Cannot emit files or set asset sources in the "outputOptions" hook, use the "renderStart" hook instead.`
};
}
function errChunkNotGeneratedForFileName(name) {
return {
code: Errors.CHUNK_NOT_GENERATED,
message: `Plugin error - Unable to get file name for chunk "${name}". Ensure that generate is called first.`
};
}
function errAssetReferenceIdNotFoundForSetSource(assetReferenceId) {
return {
code: Errors.ASSET_NOT_FOUND,
message: `Plugin error - Unable to set the source for unknown asset "${assetReferenceId}".`
};
}
function errAssetSourceAlreadySet(name) {
return {
code: Errors.ASSET_SOURCE_ALREADY_SET,
message: `Unable to set the source for asset "${name}", source already set.`
};
}
function errNoAssetSourceSet(assetName) {
return {
code: Errors.ASSET_SOURCE_MISSING,
message: `Plugin error creating asset "${assetName}" - no asset source set.`
};
}
function errBadLoader(id) {
return {
code: Errors.BAD_LOADER,
message: `Error loading ${relativeId(id)}: plugin load hook should return a string, a { code, map } object, or nothing/null`
};
}
function errDeprecation(deprecation) {
return {
code: Errors.DEPRECATED_FEATURE,
...(typeof deprecation === 'string' ? { message: deprecation } : deprecation)
};
}
function errFileReferenceIdNotFoundForFilename(assetReferenceId) {
return {
code: Errors.FILE_NOT_FOUND,
message: `Plugin error - Unable to get file name for unknown file "${assetReferenceId}".`
};
}
function errFileNameConflict(fileName) {
return {
code: Errors.FILE_NAME_CONFLICT,
message: `The emitted file "${fileName}" overwrites a previously emitted file of the same name.`
};
}
function errInputHookInOutputPlugin(pluginName, hookName) {
return {
code: Errors.INPUT_HOOK_IN_OUTPUT_PLUGIN,
message: `The "${hookName}" hook used by the output plugin ${pluginName} is a build time hook and will not be run for that plugin. Either this plugin cannot be used as an output plugin, or it should have an option to configure it as an output plugin.`
};
}
function errCannotAssignModuleToChunk(moduleId, assignToAlias, currentAlias) {
return {
code: Errors.INVALID_CHUNK,
message: `Cannot assign ${relativeId(moduleId)} to the "${assignToAlias}" chunk as it is already in the "${currentAlias}" chunk.`
};
}
function errInvalidExportOptionValue(optionValue) {
return {
code: Errors.INVALID_EXPORT_OPTION,
message: `"output.exports" must be "default", "named", "none", "auto", or left unspecified (defaults to "auto"), received "${optionValue}"`,
url: `https://rollupjs.org/guide/en/#output-exports`
};
}
function errIncompatibleExportOptionValue(optionValue, keys, entryModule) {
return {
code: 'INVALID_EXPORT_OPTION',
message: `"${optionValue}" was specified for "output.exports", but entry module "${relativeId(entryModule)}" has the following exports: ${keys.join(', ')}`
};
}
function errInternalIdCannotBeExternal(source, importer) {
return {
code: Errors.INVALID_EXTERNAL_ID,
message: `'${source}' is imported as an external by ${relativeId(importer)}, but is already an existing non-external module id.`
};
}
function errInvalidOption(option, explanation) {
return {
code: Errors.INVALID_OPTION,
message: `Invalid value for option "${option}" - ${explanation}.`
};
}
function errInvalidRollupPhaseForAddWatchFile() {
return {
code: Errors.INVALID_ROLLUP_PHASE,
message: `Cannot call addWatchFile after the build has finished.`
};
}
function errInvalidRollupPhaseForChunkEmission() {
return {
code: Errors.INVALID_ROLLUP_PHASE,
message: `Cannot emit chunks after module loading has finished.`
};
}
function errMixedExport(facadeModuleId, name) {
return {
code: Errors.MIXED_EXPORTS,
id: facadeModuleId,
message: `Entry module "${relativeId(facadeModuleId)}" is using named and default exports together. Consumers of your bundle will have to use \`${name ||
'chunk'}["default"]\` to access the default export, which may not be what you want. Use \`output.exports: "named"\` to disable this warning`,
url: `https://rollupjs.org/guide/en/#output-exports`
};
}
function errNamespaceConflict(name, reexportingModule, additionalExportAllModule) {
return {
code: Errors.NAMESPACE_CONFLICT,
message: `Conflicting namespaces: ${relativeId(reexportingModule.id)} re-exports '${name}' from both ${relativeId(reexportingModule.exportsAll[name])} and ${relativeId(additionalExportAllModule.exportsAll[name])} (will be ignored)`,
name,
reexporter: reexportingModule.id,
sources: [reexportingModule.exportsAll[name], additionalExportAllModule.exportsAll[name]]
};
}
function errEntryCannotBeExternal(unresolvedId) {
return {
code: Errors.UNRESOLVED_ENTRY,
message: `Entry module cannot be external (${relativeId(unresolvedId)}).`
};
}
function errUnresolvedEntry(unresolvedId) {
return {
code: Errors.UNRESOLVED_ENTRY,
message: `Could not resolve entry module (${relativeId(unresolvedId)}).`
};
}
function errUnresolvedImport(source, importer) {
return {
code: Errors.UNRESOLVED_IMPORT,
message: `Could not resolve '${source}' from ${relativeId(importer)}`
};
}
function errUnresolvedImportTreatedAsExternal(source, importer) {
return {
code: Errors.UNRESOLVED_IMPORT,
importer: relativeId(importer),
message: `'${source}' is imported by ${relativeId(importer)}, but could not be resolved – treating it as an external dependency`,
source,
url: 'https://rollupjs.org/guide/en/#warning-treating-module-as-external-dependency'
};
}
function errExternalSyntheticExports(source, importer) {
return {
code: Errors.EXTERNAL_SYNTHETIC_EXPORTS,
importer: relativeId(importer),
message: `External '${source}' can not have 'syntheticNamedExports' enabled.`,
source
};
}
function errFailedValidation(message) {
return {
code: Errors.VALIDATION_ERROR,
message
};
}
const createGetOption = (config, overrides) => (name, defaultValue) => overrides[name] !== undefined
? overrides[name]
: config[name] !== undefined
? config[name]
: defaultValue;
const normalizeObjectOptionValue = (optionValue) => {
if (!optionValue) {
return optionValue;
}
if (typeof optionValue !== 'object') {
return {};
}
return optionValue;
};
const getObjectOption = (config, overrides, name) => {
const commandOption = normalizeObjectOptionValue(overrides[name]);
const configOption = normalizeObjectOptionValue(config[name]);
if (commandOption !== undefined) {
return commandOption && { ...configOption, ...commandOption };
}
return configOption;
};
function ensureArray(items) {
if (Array.isArray(items)) {
return items.filter(Boolean);
}
if (items) {
return [items];
}
return [];
}
const defaultOnWarn = warning => {
if (typeof warning === 'string') {
console.warn(warning);
}
else {
console.warn(warning.message);
}
};
const getOnWarn = (config, defaultOnWarnHandler) => config.onwarn
? warning => config.onwarn(warning, defaultOnWarnHandler)
: defaultOnWarnHandler;
const getExternal = (config, overrides) => {
const configExternal = config.external;
return typeof configExternal === 'function'
? (id, ...rest) => configExternal(id, ...rest) || overrides.external.indexOf(id) !== -1
: (Array.isArray(configExternal)
? configExternal
: configExternal
? [configExternal]
: []).concat(overrides.external);
};
function parseInputOptions(config, overrides = { external: [], globals: undefined }, defaultOnWarnHandler = defaultOnWarn) {
const getOption = createGetOption(config, overrides);
const inputOptions = {
acorn: config.acorn,
acornInjectPlugins: config.acornInjectPlugins,
cache: getOption('cache'),
context: getOption('context'),
experimentalCacheExpiry: getOption('experimentalCacheExpiry', 10),
external: getExternal(config, overrides),
inlineDynamicImports: getOption('inlineDynamicImports', false),
input: getOption('input', []),
manualChunks: getOption('manualChunks'),
moduleContext: config.moduleContext,
onwarn: getOnWarn(config, defaultOnWarnHandler),
perf: getOption('perf', false),
plugins: ensureArray(config.plugins),
preserveEntrySignatures: getOption('preserveEntrySignatures'),
preserveModules: getOption('preserveModules'),
preserveSymlinks: getOption('preserveSymlinks'),
shimMissingExports: getOption('shimMissingExports'),
strictDeprecations: getOption('strictDeprecations', false),
treeshake: getObjectOption(config, overrides, 'treeshake'),
watch: config.watch
};
// support rollup({ cache: prevBuildObject })
if (inputOptions.cache && inputOptions.cache.cache)
inputOptions.cache = inputOptions.cache.cache;
warnUnknownOptions(config, Object.keys(inputOptions), 'input options', inputOptions.onwarn, /^output$/);
return inputOptions;
}
function parseOutputOptions(config, warn, overrides = {}) {
const getOption = createGetOption(config, overrides);
const outputOptions = {
amd: { ...config.amd, ...overrides.amd },
assetFileNames: getOption('assetFileNames'),
banner: getOption('banner'),
chunkFileNames: getOption('chunkFileNames'),
compact: getOption('compact', false),
dir: getOption('dir'),
dynamicImportFunction: getOption('dynamicImportFunction'),
entryFileNames: getOption('entryFileNames'),
esModule: getOption('esModule', true),
exports: normalizeExports(getOption('exports')),
extend: getOption('extend'),
externalLiveBindings: getOption('externalLiveBindings', true),
file: getOption('file'),
footer: getOption('footer'),
format: normalizeFormat(getOption('format')),
freeze: getOption('freeze', true),
globals: getOption('globals'),
hoistTransitiveImports: getOption('hoistTransitiveImports', true),
indent: getOption('indent', true),
interop: getOption('interop', true),
intro: getOption('intro'),
minifyInternalExports: getOption('minifyInternalExports'),
name: getOption('name'),
namespaceToStringTag: getOption('namespaceToStringTag', false),
noConflict: getOption('noConflict'),
outro: getOption('outro'),
paths: getOption('paths'),
plugins: ensureArray(config.plugins),
preferConst: getOption('preferConst'),
sourcemap: getOption('sourcemap'),
sourcemapExcludeSources: getOption('sourcemapExcludeSources'),
sourcemapFile: getOption('sourcemapFile'),
sourcemapPathTransform: getOption('sourcemapPathTransform'),
strict: getOption('strict', true)
};
warnUnknownOptions(config, Object.keys(outputOptions), 'output options', warn);
return outputOptions;
}
function warnUnknownOptions(passedOptions, validOptions, optionType, warn, ignoredKeys = /$./) {
const validOptionSet = new Set(validOptions);
const unknownOptions = Object.keys(passedOptions).filter(key => !(validOptionSet.has(key) || ignoredKeys.test(key)));
if (unknownOptions.length > 0) {
warn({
code: 'UNKNOWN_OPTION',
message: `Unknown ${optionType}: ${unknownOptions.join(', ')}. Allowed options: ${Array.from(validOptionSet)
.sort()
.join(', ')}`
});
}
}
function normalizeFormat(format) {
switch (format) {
case undefined:
case 'es':
case 'esm':
case 'module':
return 'es';
case 'cjs':
case 'commonjs':
return 'cjs';
case 'system':
case 'systemjs':
return 'system';
case 'amd':
case 'iife':
case 'umd':
return format;
default:
return error({
message: `You must specify "output.format", which can be one of "amd", "cjs", "system", "es", "iife" or "umd".`,
url: `https://rollupjs.org/guide/en/#output-format`
});
}
}
function normalizeExports(exports) {
if (exports && !['default', 'named', 'none', 'auto'].includes(exports)) {
return error(errInvalidExportOptionValue(exports));
}
return exports;
}
let fsEvents;
let fsEventsImportError;
function loadFsEvents() {
return new Promise(function (resolve) { resolve(_interopNamespace(require('fsevents'))); })
.then(namespace => {
fsEvents = namespace.default;
})
.catch(err => {
fsEventsImportError = err;
});
}
// A call to this function will be injected into the chokidar code
function getFsEvents() {
if (fsEventsImportError)
throw fsEventsImportError;
return fsEvents;
}
var fseventsImporter = {
__proto__: null,
loadFsEvents: loadFsEvents,
getFsEvents: getFsEvents
};
// Reserved word lists for various dialects of the language
var reservedWords = {
3: "abstract boolean byte char class double enum export extends final float goto implements import int interface long native package private protected public short static super synchronized throws transient volatile",
5: "class enum extends super const export import",
6: "enum",
strict: "implements interface let package private protected public static yield",
strictBind: "eval arguments"
};
// And the keywords
var ecma5AndLessKeywords = "break case catch continue debugger default do else finally for function if return switch throw try var while with null true false instanceof typeof void delete new in this";
var keywords = {
5: ecma5AndLessKeywords,
"5module": ecma5AndLessKeywords + " export import",
6: ecma5AndLessKeywords + " const class extends export import super"
};
var keywordRelationalOperator = /^in(stanceof)?$/;
// ## Character categories
// Big ugly regular expressions that match characters in the
// whitespace, identifier, and identifier-start categories. These
// are only applied when a character is found to actually have a
// code point above 128.
// Generated by `bin/generate-identifier-regex.js`.
var nonASCIIidentifierStartChars = "\xaa\xb5\xba\xc0-\xd6\xd8-\xf6\xf8-\u02c1\u02c6-\u02d1\u02e0-\u02e4\u02ec\u02ee\u0370-\u0374\u0376\u0377\u037a-\u037d\u037f\u0386\u0388-\u038a\u038c\u038e-\u03a1\u03a3-\u03f5\u03f7-\u0481\u048a-\u052f\u0531-\u0556\u0559\u0560-\u0588\u05d0-\u05ea\u05ef-\u05f2\u0620-\u064a\u066e\u066f\u0671-\u06d3\u06d5\u06e5\u06e6\u06ee\u06ef\u06fa-\u06fc\u06ff\u0710\u0712-\u072f\u074d-\u07a5\u07b1\u07ca-\u07ea\u07f4\u07f5\u07fa\u0800-\u0815\u081a\u0824\u0828\u0840-\u0858\u0860-\u086a\u08a0-\u08b4\u08b6-\u08bd\u0904-\u0939\u093d\u0950\u0958-\u0961\u0971-\u0980\u0985-\u098c\u098f\u0990\u0993-\u09a8\u09aa-\u09b0\u09b2\u09b6-\u09b9\u09bd\u09ce\u09dc\u09dd\u09df-\u09e1\u09f0\u09f1\u09fc\u0a05-\u0a0a\u0a0f\u0a10\u0a13-\u0a28\u0a2a-\u0a30\u0a32\u0a33\u0a35\u0a36\u0a38\u0a39\u0a59-\u0a5c\u0a5e\u0a72-\u0a74\u0a85-\u0a8d\u0a8f-\u0a91\u0a93-\u0aa8\u0aaa-\u0ab0\u0ab2\u0ab3\u0ab5-\u0ab9\u0abd\u0ad0\u0ae0\u0ae1\u0af9\u0b05-\u0b0c\u0b0f\u0b10\u0b13-\u0b28\u0b2a-\u0b30\u0b32\u0b33\u0b35-\u0b39\u0b3d\u0b5c\u0b5d\u0b5f-\u0b61\u0b71\u0b83\u0b85-\u0b8a\u0b8e-\u0b90\u0b92-\u0b95\u0b99\u0b9a\u0b9c\u0b9e\u0b9f\u0ba3\u0ba4\u0ba8-\u0baa\u0bae-\u0bb9\u0bd0\u0c05-\u0c0c\u0c0e-\u0c10\u0c12-\u0c28\u0c2a-\u0c39\u0c3d\u0c58-\u0c5a\u0c60\u0c61\u0c80\u0c85-\u0c8c\u0c8e-\u0c90\u0c92-\u0ca8\u0caa-\u0cb3\u0cb5-\u0cb9\u0cbd\u0cde\u0ce0\u0ce1\u0cf1\u0cf2\u0d05-\u0d0c\u0d0e-\u0d10\u0d12-\u0d3a\u0d3d\u0d4e\u0d54-\u0d56\u0d5f-\u0d61\u0d7a-\u0d7f\u0d85-\u0d96\u0d9a-\u0db1\u0db3-\u0dbb\u0dbd\u0dc0-\u0dc6\u0e01-\u0e30\u0e32\u0e33\u0e40-\u0e46\u0e81\u0e82\u0e84\u0e86-\u0e8a\u0e8c-\u0ea3\u0ea5\u0ea7-\u0eb0\u0eb2\u0eb3\u0ebd\u0ec0-\u0ec4\u0ec6\u0edc-\u0edf\u0f00\u0f40-\u0f47\u0f49-\u0f6c\u0f88-\u0f8c\u1000-\u102a\u103f\u1050-\u1055\u105a-\u105d\u1061\u1065\u1066\u106e-\u1070\u1075-\u1081\u108e\u10a0-\u10c5\u10c7\u10cd\u10d0-\u10fa\u10fc-\u1248\u124a-\u124d\u1250-\u1256\u1258\u125a-\u125d\u1260-\u1288\u128a-\u128d\u1290-\u12b0\u12b2-\u12b5\u12b8-\u12be\u12c0\u12c2-\u12c5\u12c8-\u12d6\u12d8-\u1310\u1312-\u1315\u1318-\u135a\u1380-\u138f\u13a0-\u13f5\u13f8-\u13fd\u1401-\u166c\u166f-\u167f\u1681-\u169a\u16a0-\u16ea\u16ee-\u16f8\u1700-\u170c\u170e-\u1711\u1720-\u1731\u1740-\u1751\u1760-\u176c\u176e-\u1770\u1780-\u17b3\u17d7\u17dc\u1820-\u1878\u1880-\u18a8\u18aa\u18b0-\u18f5\u1900-\u191e\u1950-\u196d\u1970-\u1974\u1980-\u19ab\u19b0-\u19c9\u1a00-\u1a16\u1a20-\u1a54\u1aa7\u1b05-\u1b33\u1b45-\u1b4b\u1b83-\u1ba0\u1bae\u1baf\u1bba-\u1be5\u1c00-\u1c23\u1c4d-\u1c4f\u1c5a-\u1c7d\u1c80-\u1c88\u1c90-\u1cba\u1cbd-\u1cbf\u1ce9-\u1cec\u1cee-\u1cf3\u1cf5\u1cf6\u1cfa\u1d00-\u1dbf\u1e00-\u1f15\u1f18-\u1f1d\u1f20-\u1f45\u1f48-\u1f4d\u1f50-\u1f57\u1f59\u1f5b\u1f5d\u1f5f-\u1f7d\u1f80-\u1fb4\u1fb6-\u1fbc\u1fbe\u1fc2-\u1fc4\u1fc6-\u1fcc\u1fd0-\u1fd3\u1fd6-\u1fdb\u1fe0-\u1fec\u1ff2-\u1ff4\u1ff6-\u1ffc\u2071\u207f\u2090-\u209c\u2102\u2107\u210a-\u2113\u2115\u2118-\u211d\u2124\u2126\u2128\u212a-\u2139\u213c-\u213f\u2145-\u2149\u214e\u2160-\u2188\u2c00-\u2c2e\u2c30-\u2c5e\u2c60-\u2ce4\u2ceb-\u2cee\u2cf2\u2cf3\u2d00-\u2d25\u2d27\u2d2d\u2d30-\u2d67\u2d6f\u2d80-\u2d96\u2da0-\u2da6\u2da8-\u2dae\u2db0-\u2db6\u2db8-\u2dbe\u2dc0-\u2dc6\u2dc8-\u2dce\u2dd0-\u2dd6\u2dd8-\u2dde\u3005-\u3007\u3021-\u3029\u3031-\u3035\u3038-\u303c\u3041-\u3096\u309b-\u309f\u30a1-\u30fa\u30fc-\u30ff\u3105-\u312f\u3131-\u318e\u31a0-\u31ba\u31f0-\u31ff\u3400-\u4db5\u4e00-\u9fef\ua000-\ua48c\ua4d0-\ua4fd\ua500-\ua60c\ua610-\ua61f\ua62a\ua62b\ua640-\ua66e\ua67f-\ua69d\ua6a0-\ua6ef\ua717-\ua71f\ua722-\ua788\ua78b-\ua7bf\ua7c2-\ua7c6\ua7f7-\ua801\ua803-\ua805\ua807-\ua80a\ua80c-\ua822\ua840-\ua873\ua882-\ua8b3\ua8f2-\ua8f7\ua8fb\ua8fd\ua8fe\ua90a-\ua925\ua930-\ua946\ua960-\ua97c\ua984-\ua9b2\ua9cf\ua9e0-\ua9e4\ua9e6-\ua9ef\ua9fa-\ua9fe\uaa00-\uaa28\uaa40-\uaa42\uaa44-\uaa4b\uaa60-\uaa76\uaa7a\uaa7e-\uaaaf\uaab1\uaab5\uaab6\uaab9-\uaabd\uaac0\uaac2\uaadb-\uaadd\uaae0-\uaaea\uaaf2-\uaaf4\uab01-\uab06\uab09-\uab0e\uab11-\uab16\uab20-\uab26\uab28-\uab2e\uab30-\uab5a\uab5c-\uab67\uab70-\uabe2\uac00-\ud7a3\ud7b0-\ud7c6\ud7cb-\ud7fb\uf900-\ufa6d\ufa70-\ufad9\ufb00-\ufb06\ufb13-\ufb17\ufb1d\ufb1f-\ufb28\ufb2a-\ufb36\ufb38-\ufb3c\ufb3e\ufb40\ufb41\ufb43\ufb44\ufb46-\ufbb1\ufbd3-\ufd3d\ufd50-\ufd8f\ufd92-\ufdc7\ufdf0-\ufdfb\ufe70-\ufe74\ufe76-\ufefc\uff21-\uff3a\uff41-\uff5a\uff66-\uffbe\uffc2-\uffc7\uffca-\uffcf\uffd2-\uffd7\uffda-\uffdc";
var nonASCIIidentifierChars = "\u200c\u200d\xb7\u0300-\u036f\u0387\u0483-\u0487\u0591-\u05bd\u05bf\u05c1\u05c2\u05c4\u05c5\u05c7\u0610-\u061a\u064b-\u0669\u0670\u06d6-\u06dc\u06df-\u06e4\u06e7\u06e8\u06ea-\u06ed\u06f0-\u06f9\u0711\u0730-\u074a\u07a6-\u07b0\u07c0-\u07c9\u07eb-\u07f3\u07fd\u0816-\u0819\u081b-\u0823\u0825-\u0827\u0829-\u082d\u0859-\u085b\u08d3-\u08e1\u08e3-\u0903\u093a-\u093c\u093e-\u094f\u0951-\u0957\u0962\u0963\u0966-\u096f\u0981-\u0983\u09bc\u09be-\u09c4\u09c7\u09c8\u09cb-\u09cd\u09d7\u09e2\u09e3\u09e6-\u09ef\u09fe\u0a01-\u0a03\u0a3c\u0a3e-\u0a42\u0a47\u0a48\u0a4b-\u0a4d\u0a51\u0a66-\u0a71\u0a75\u0a81-\u0a83\u0abc\u0abe-\u0ac5\u0ac7-\u0ac9\u0acb-\u0acd\u0ae2\u0ae3\u0ae6-\u0aef\u0afa-\u0aff\u0b01-\u0b03\u0b3c\u0b3e-\u0b44\u0b47\u0b48\u0b4b-\u0b4d\u0b56\u0b57\u0b62\u0b63\u0b66-\u0b6f\u0b82\u0bbe-\u0bc2\u0bc6-\u0bc8\u0bca-\u0bcd\u0bd7\u0be6-\u0bef\u0c00-\u0c04\u0c3e-\u0c44\u0c46-\u0c48\u0c4a-\u0c4d\u0c55\u0c56\u0c62\u0c63\u0c66-\u0c6f\u0c81-\u0c83\u0cbc\u0cbe-\u0cc4\u0cc6-\u0cc8\u0cca-\u0ccd\u0cd5\u0cd6\u0ce2\u0ce3\u0ce6-\u0cef\u0d00-\u0d03\u0d3b\u0d3c\u0d3e-\u0d44\u0d46-\u0d48\u0d4a-\u0d4d\u0d57\u0d62\u0d63\u0d66-\u0d6f\u0d82\u0d83\u0dca\u0dcf-\u0dd4\u0dd6\u0dd8-\u0ddf\u0de6-\u0def\u0df2\u0df3\u0e31\u0e34-\u0e3a\u0e47-\u0e4e\u0e50-\u0e59\u0eb1\u0eb4-\u0ebc\u0ec8-\u0ecd\u0ed0-\u0ed9\u0f18\u0f19\u0f20-\u0f29\u0f35\u0f37\u0f39\u0f3e\u0f3f\u0f71-\u0f84\u0f86\u0f87\u0f8d-\u0f97\u0f99-\u0fbc\u0fc6\u102b-\u103e\u1040-\u1049\u1056-\u1059\u105e-\u1060\u1062-\u1064\u1067-\u106d\u1071-\u1074\u1082-\u108d\u108f-\u109d\u135d-\u135f\u1369-\u1371\u1712-\u1714\u1732-\u1734\u1752\u1753\u1772\u1773\u17b4-\u17d3\u17dd\u17e0-\u17e9\u180b-\u180d\u1810-\u1819\u18a9\u1920-\u192b\u1930-\u193b\u1946-\u194f\u19d0-\u19da\u1a17-\u1a1b\u1a55-\u1a5e\u1a60-\u1a7c\u1a7f-\u1a89\u1a90-\u1a99\u1ab0-\u1abd\u1b00-\u1b04\u1b34-\u1b44\u1b50-\u1b59\u1b6b-\u1b73\u1b80-\u1b82\u1ba1-\u1bad\u1bb0-\u1bb9\u1be6-\u1bf3\u1c24-\u1c37\u1c40-\u1c49\u1c50-\u1c59\u1cd0-\u1cd2\u1cd4-\u1ce8\u1ced\u1cf4\u1cf7-\u1cf9\u1dc0-\u1df9\u1dfb-\u1dff\u203f\u2040\u2054\u20d0-\u20dc\u20e1\u20e5-\u20f0\u2cef-\u2cf1\u2d7f\u2de0-\u2dff\u302a-\u302f\u3099\u309a\ua620-\ua629\ua66f\ua674-\ua67d\ua69e\ua69f\ua6f0\ua6f1\ua802\ua806\ua80b\ua823-\ua827\ua880\ua881\ua8b4-\ua8c5\ua8d0-\ua8d9\ua8e0-\ua8f1\ua8ff-\ua909\ua926-\ua92d\ua947-\ua953\ua980-\ua983\ua9b3-\ua9c0\ua9d0-\ua9d9\ua9e5\ua9f0-\ua9f9\uaa29-\uaa36\uaa43\uaa4c\uaa4d\uaa50-\uaa59\uaa7b-\uaa7d\uaab0\uaab2-\uaab4\uaab7\uaab8\uaabe\uaabf\uaac1\uaaeb-\uaaef\uaaf5\uaaf6\uabe3-\uabea\uabec\uabed\uabf0-\uabf9\ufb1e\ufe00-\ufe0f\ufe20-\ufe2f\ufe33\ufe34\ufe4d-\ufe4f\uff10-\uff19\uff3f";
var nonASCIIidentifierStart = new RegExp("[" + nonASCIIidentifierStartChars + "]");
var nonASCIIidentifier = new RegExp("[" + nonASCIIidentifierStartChars + nonASCIIidentifierChars + "]");
nonASCIIidentifierStartChars = nonASCIIidentifierChars = null;
// These are a run-length and offset encoded representation of the
// >0xffff code points that are a valid part of identifiers. The
// offset starts at 0x10000, and each pair of numbers represents an
// offset to the next range, and then a size of the range. They were
// generated by bin/generate-identifier-regex.js
// eslint-disable-next-line comma-spacing
var astralIdentifierStartCodes = [0,11,2,25,2,18,2,1,2,14,3,13,35,122,70,52,268,28,4,48,48,31,14,29,6,37,11,29,3,35,5,7,2,4,43,157,19,35,5,35,5,39,9,51,157,310,10,21,11,7,153,5,3,0,2,43,2,1,4,0,3,22,11,22,10,30,66,18,2,1,11,21,11,25,71,55,7,1,65,0,16,3,2,2,2,28,43,28,4,28,36,7,2,27,28,53,11,21,11,18,14,17,111,72,56,50,14,50,14,35,477,28,11,0,9,21,155,22,13,52,76,44,33,24,27,35,30,0,12,34,4,0,13,47,15,3,22,0,2,0,36,17,2,24,85,6,2,0,2,3,2,14,2,9,8,46,39,7,3,1,3,21,2,6,2,1,2,4,4,0,19,0,13,4,159,52,19,3,21,0,33,47,21,1,2,0,185,46,42,3,37,47,21,0,60,42,14,0,72,26,230,43,117,63,32,0,161,7,3,38,17,0,2,0,29,0,11,39,8,0,22,0,12,45,20,0,35,56,264,8,2,36,18,0,50,29,113,6,2,1,2,37,22,0,26,5,2,1,2,31,15,0,328,18,270,921,103,110,18,195,2749,1070,4050,582,8634,568,8,30,114,29,19,47,17,3,32,20,6,18,689,63,129,74,6,0,67,12,65,1,2,0,29,6135,9,754,9486,286,50,2,18,3,9,395,2309,106,6,12,4,8,8,9,5991,84,2,70,2,1,3,0,3,1,3,3,2,11,2,0,2,6,2,64,2,3,3,7,2,6,2,27,2,3,2,4,2,0,4,6,2,339,3,24,2,24,2,30,2,24,2,30,2,24,2,30,2,24,2,30,2,24,2,7,2357,44,11,6,17,0,370,43,1301,196,60,67,8,0,1205,3,2,26,2,1,2,0,3,0,2,9,2,3,2,0,2,0,7,0,5,0,2,0,2,0,2,2,2,1,2,0,3,0,2,0,2,0,2,0,2,0,2,1,2,0,3,3,2,6,2,3,2,3,2,0,2,9,2,16,6,2,2,4,2,16,4421,42710,42,4148,12,221,3,5761,15,7472,3104,541];
// eslint-disable-next-line comma-spacing
var astralIdentifierCodes = [509,0,227,0,150,4,294,9,1368,2,2,1,6,3,41,2,5,0,166,1,574,3,9,9,525,10,176,2,54,14,32,9,16,3,46,10,54,9,7,2,37,13,2,9,6,1,45,0,13,2,49,13,9,3,4,9,83,11,7,0,161,11,6,9,7,3,56,1,2,6,3,1,3,2,10,0,11,1,3,6,4,4,193,17,10,9,5,0,82,19,13,9,214,6,3,8,28,1,83,16,16,9,82,12,9,9,84,14,5,9,243,14,166,9,232,6,3,6,4,0,29,9,41,6,2,3,9,0,10,10,47,15,406,7,2,7,17,9,57,21,2,13,123,5,4,0,2,1,2,6,2,0,9,9,49,4,2,1,2,4,9,9,330,3,19306,9,135,4,60,6,26,9,1014,0,2,54,8,3,19723,1,5319,4,4,5,9,7,3,6,31,3,149,2,1418,49,513,54,5,49,9,0,15,0,23,4,2,14,1361,6,2,16,3,6,2,1,2,4,262,6,10,9,419,13,1495,6,110,6,6,9,792487,239];
// This has a complexity linear to the value of the code. The
// assumption is that looking up astral identifier characters is
// rare.
function isInAstralSet(code, set) {
var pos = 0x10000;
for (var i = 0; i < set.length; i += 2) {
pos += set[i];
if (pos > code) { return false }
pos += set[i + 1];
if (pos >= code) { return true }
}
}
// Test whether a given character code starts an identifier.
function isIdentifierStart(code, astral) {
if (code < 65) { return code === 36 }
if (code < 91) { return true }
if (code < 97) { return code === 95 }
if (code < 123) { return true }
if (code <= 0xffff) { return code >= 0xaa && nonASCIIidentifierStart.test(String.fromCharCode(code)) }
if (astral === false) { return false }
return isInAstralSet(code, astralIdentifierStartCodes)
}
// Test whether a given character is part of an identifier.
function isIdentifierChar(code, astral) {
if (code < 48) { return code === 36 }
if (code < 58) { return true }
if (code < 65) { return false }
if (code < 91) { return true }
if (code < 97) { return code === 95 }
if (code < 123) { return true }
if (code <= 0xffff) { return code >= 0xaa && nonASCIIidentifier.test(String.fromCharCode(code)) }
if (astral === false) { return false }
return isInAstralSet(code, astralIdentifierStartCodes) || isInAstralSet(code, astralIdentifierCodes)
}
// ## Token types
// The assignment of fine-grained, information-carrying type objects
// allows the tokenizer to store the information it has about a
// token in a way that is very cheap for the parser to look up.
// All token type variables start with an underscore, to make them
// easy to recognize.
// The `beforeExpr` property is used to disambiguate between regular
// expressions and divisions. It is set on all token types that can
// be followed by an expression (thus, a slash after them would be a
// regular expression).
//
// The `startsExpr` property is used to check if the token ends a
// `yield` expression. It is set on all token types that either can
// directly start an expression (like a quotation mark) or can
// continue an expression (like the body of a string).
//
// `isLoop` marks a keyword as starting a loop, which is important
// to know when parsing a label, in order to allow or disallow
// continue jumps to that label.
var TokenType = function TokenType(label, conf) {
if ( conf === void 0 ) conf = {};
this.label = label;
this.keyword = conf.keyword;
this.beforeExpr = !!conf.beforeExpr;
this.startsExpr = !!conf.startsExpr;
this.isLoop = !!conf.isLoop;
this.isAssign = !!conf.isAssign;
this.prefix = !!conf.prefix;
this.postfix = !!conf.postfix;
this.binop = conf.binop || null;
this.updateContext = null;
};
function binop(name, prec) {
return new TokenType(name, {beforeExpr: true, binop: prec})
}
var beforeExpr = {beforeExpr: true}, startsExpr = {startsExpr: true};
// Map keyword names to token types.
var keywords$1 = {};
// Succinct definitions of keyword token types
function kw(name, options) {
if ( options === void 0 ) options = {};
options.keyword = name;
return keywords$1[name] = new TokenType(name, options)
}
var types = {
num: new TokenType("num", startsExpr),
regexp: new TokenType("regexp", startsExpr),
string: new TokenType("string", startsExpr),
name: new TokenType("name", startsExpr),
eof: new TokenType("eof"),
// Punctuation token types.
bracketL: new TokenType("[", {beforeExpr: true, startsExpr: true}),
bracketR: new TokenType("]"),
braceL: new TokenType("{", {beforeExpr: true, startsExpr: true}),
braceR: new TokenType("}"),
parenL: new TokenType("(", {beforeExpr: true, startsExpr: true}),
parenR: new TokenType(")"),
comma: new TokenType(",", beforeExpr),
semi: new TokenType(";", beforeExpr),
colon: new TokenType(":", beforeExpr),
dot: new TokenType("."),
question: new TokenType("?", beforeExpr),
arrow: new TokenType("=>", beforeExpr),
template: new TokenType("template"),
invalidTemplate: new TokenType("invalidTemplate"),
ellipsis: new TokenType("...", beforeExpr),
backQuote: new TokenType("`", startsExpr),
dollarBraceL: new TokenType("${", {beforeExpr: true, startsExpr: true}),
// Operators. These carry several kinds of properties to help the
// parser use them properly (the presence of these properties is
// what categorizes them as operators).
//
// `binop`, when present, specifies that this operator is a binary
// operator, and will refer to its precedence.
//
// `prefix` and `postfix` mark the operator as a prefix or postfix
// unary operator.
//
// `isAssign` marks all of `=`, `+=`, `-=` etcetera, which act as
// binary operators with a very low precedence, that should result
// in AssignmentExpression nodes.
eq: new TokenType("=", {beforeExpr: true, isAssign: true}),
assign: new TokenType("_=", {beforeExpr: true, isAssign: true}),
incDec: new TokenType("++/--", {prefix: true, postfix: true, startsExpr: true}),
prefix: new TokenType("!/~", {beforeExpr: true, prefix: true, startsExpr: true}),
logicalOR: binop("||", 1),
logicalAND: binop("&&", 2),
bitwiseOR: binop("|", 3),
bitwiseXOR: binop("^", 4),
bitwiseAND: binop("&", 5),
equality: binop("==/!=/===/!==", 6),
relational: binop("</>/<=/>=", 7),
bitShift: binop("<</>>/>>>", 8),
plusMin: new TokenType("+/-", {beforeExpr: true, binop: 9, prefix: true, startsExpr: true}),
modulo: binop("%", 10),
star: binop("*", 10),
slash: binop("/", 10),
starstar: new TokenType("**", {beforeExpr: true}),
// Keyword token types.
_break: kw("break"),
_case: kw("case", beforeExpr),
_catch: kw("catch"),
_continue: kw("continue"),
_debugger: kw("debugger"),
_default: kw("default", beforeExpr),
_do: kw("do", {isLoop: true, beforeExpr: true}),
_else: kw("else", beforeExpr),
_finally: kw("finally"),
_for: kw("for", {isLoop: true}),
_function: kw("function", startsExpr),
_if: kw("if"),
_return: kw("return", beforeExpr),
_switch: kw("switch"),
_throw: kw("throw", beforeExpr),
_try: kw("try"),
_var: kw("var"),
_const: kw("const"),
_while: kw("while", {isLoop: true}),
_with: kw("with"),
_new: kw("new", {beforeExpr: true, startsExpr: true}),
_this: kw("this", startsExpr),
_super: kw("super", startsExpr),
_class: kw("class", startsExpr),
_extends: kw("extends", beforeExpr),
_export: kw("export"),
_import: kw("import", startsExpr),
_null: kw("null", startsExpr),
_true: kw("true", startsExpr),
_false: kw("false", startsExpr),
_in: kw("in", {beforeExpr: true, binop: 7}),
_instanceof: kw("instanceof", {beforeExpr: true, binop: 7}),
_typeof: kw("typeof", {beforeExpr: true, prefix: true, startsExpr: true}),
_void: kw("void", {beforeExpr: true, prefix: true, startsExpr: true}),
_delete: kw("delete", {beforeExpr: true, prefix: true, startsExpr: true})
};
// Matches a whole line break (where CRLF is considered a single
// line break). Used to count lines.
var lineBreak = /\r\n?|\n|\u2028|\u2029/;
var lineBreakG = new RegExp(lineBreak.source, "g");
function isNewLine(code, ecma2019String) {
return code === 10 || code === 13 || (!ecma2019String && (code === 0x2028 || code === 0x2029))
}
var nonASCIIwhitespace = /[\u1680\u2000-\u200a\u202f\u205f\u3000\ufeff]/;
var skipWhiteSpace = /(?:\s|\/\/.*|\/\*[^]*?\*\/)*/g;
var ref = Object.prototype;
var hasOwnProperty = ref.hasOwnProperty;
var toString = ref.toString;
// Checks if an object has a property.
function has(obj, propName) {
return hasOwnProperty.call(obj, propName)
}
var isArray = Array.isArray || (function (obj) { return (
toString.call(obj) === "[object Array]"
); });
function wordsRegexp(words) {
return new RegExp("^(?:" + words.replace(/ /g, "|") + ")$")
}
// These are used when `options.locations` is on, for the
// `startLoc` and `endLoc` properties.
var Position = function Position(line, col) {
this.line = line;
this.column = col;
};
Position.prototype.offset = function offset (n) {
return new Position(this.line, this.column + n)
};
var SourceLocation = function SourceLocation(p, start, end) {
this.start = start;
this.end = end;
if (p.sourceFile !== null) { this.source = p.sourceFile; }
};
// The `getLineInfo` function is mostly useful when the
// `locations` option is off (for performance reasons) and you
// want to find the line/column position for a given character
// offset. `input` should be the code string that the offset refers
// into.
function getLineInfo(input, offset) {
for (var line = 1, cur = 0;;) {
lineBreakG.lastIndex = cur;
var match = lineBreakG.exec(input);
if (match && match.index < offset) {
++line;
cur = match.index + match[0].length;
} else {
return new Position(line, offset - cur)
}
}
}
// A second optional argument can be given to further configure
// the parser process. These options are recognized:
var defaultOptions = {
// `ecmaVersion` indicates the ECMAScript version to parse. Must be
// either 3, 5, 6 (2015), 7 (2016), 8 (2017), 9 (2018), or 10
// (2019). This influences support for strict mode, the set of
// reserved words, and support for new syntax features. The default
// is 10.
ecmaVersion: 10,
// `sourceType` indicates the mode the code should be parsed in.
// Can be either `"script"` or `"module"`. This influences global
// strict mode and parsing of `import` and `export` declarations.
sourceType: "script",
// `onInsertedSemicolon` can be a callback that will be called
// when a semicolon is automatically inserted. It will be passed
// the position of the comma as an offset, and if `locations` is
// enabled, it is given the location as a `{line, column}` object
// as second argument.
onInsertedSemicolon: null,
// `onTrailingComma` is similar to `onInsertedSemicolon`, but for
// trailing commas.
onTrailingComma: null,
// By default, reserved words are only enforced if ecmaVersion >= 5.
// Set `allowReserved` to a boolean value to explicitly turn this on
// an off. When this option has the value "never", reserved words
// and keywords can also not be used as property names.
allowReserved: null,
// When enabled, a return at the top level is not considered an
// error.
allowReturnOutsideFunction: false,
// When enabled, import/export statements are not constrained to
// appearing at the top of the program.
allowImportExportEverywhere: false,
// When enabled, await identifiers are allowed to appear at the top-level scope,
// but they are still not allowed in non-async functions.
allowAwaitOutsideFunction: false,
// When enabled, hashbang directive in the beginning of file
// is allowed and treated as a line comment.
allowHashBang: false,
// When `locations` is on, `loc` properties holding objects with
// `start` and `end` properties in `{line, column}` form (with
// line being 1-based and column 0-based) will be attached to the
// nodes.
locations: false,
// A function can be passed as `onToken` option, which will
// cause Acorn to call that function with object in the same
// format as tokens returned from `tokenizer().getToken()`. Note
// that you are not allowed to call the parser from the
// callback—that will corrupt its internal state.
onToken: null,
// A function can be passed as `onComment` option, which will
// cause Acorn to call that function with `(block, text, start,
// end)` parameters whenever a comment is skipped. `block` is a
// boolean indicating whether this is a block (`/* */`) comment,
// `text` is the content of the comment, and `start` and `end` are
// character offsets that denote the start and end of the comment.
// When the `locations` option is on, two more parameters are
// passed, the full `{line, column}` locations of the start and
// end of the comments. Note that you are not allowed to call the
// parser from the callback—that will corrupt its internal state.
onComment: null,
// Nodes have their start and end characters offsets recorded in
// `start` and `end` properties (directly on the node, rather than
// the `loc` object, which holds line/column data. To also add a
// [semi-standardized][range] `range` property holding a `[start,
// end]` array with the same numbers, set the `ranges` option to
// `true`.
//
// [range]: https://bugzilla.mozilla.org/show_bug.cgi?id=745678
ranges: false,
// It is possible to parse multiple files into a single AST by
// passing the tree produced by parsing the first file as
// `program` option in subsequent parses. This will add the
// toplevel forms of the parsed file to the `Program` (top) node
// of an existing parse tree.
program: null,
// When `locations` is on, you can pass this to record the source
// file in every node's `loc` object.
sourceFile: null,
// This value, if given, is stored in every node, whether
// `locations` is on or off.
directSourceFile: null,
// When enabled, parenthesized expressions are represented by
// (non-standard) ParenthesizedExpression nodes
preserveParens: false
};
// Interpret and default an options object
function getOptions(opts) {
var options = {};
for (var opt in defaultOptions)
{ options[opt] = opts && has(opts, opt) ? opts[opt] : defaultOptions[opt]; }
if (options.ecmaVersion >= 2015)
{ options.ecmaVersion -= 2009; }
if (options.allowReserved == null)
{ options.allowReserved = options.ecmaVersion < 5; }
if (isArray(options.onToken)) {
var tokens = options.onToken;
options.onToken = function (token) { return tokens.push(token); };
}
if (isArray(options.onComment))
{ options.onComment = pushComment(options, options.onComment); }
return options
}
function pushComment(options, array) {
return function(block, text, start, end, startLoc, endLoc) {
var comment = {
type: block ? "Block" : "Line",
value: text,
start: start,
end: end
};
if (options.locations)
{ comment.loc = new SourceLocation(this, startLoc, endLoc); }
if (options.ranges)
{ comment.range = [start, end]; }
array.push(comment);
}
}
// Each scope gets a bitset that may contain these flags
var
SCOPE_TOP = 1,
SCOPE_FUNCTION = 2,
SCOPE_VAR = SCOPE_TOP | SCOPE_FUNCTION,
SCOPE_ASYNC = 4,
SCOPE_GENERATOR = 8,
SCOPE_ARROW = 16,
SCOPE_SIMPLE_CATCH = 32,
SCOPE_SUPER = 64,
SCOPE_DIRECT_SUPER = 128;
function functionFlags(async, generator) {
return SCOPE_FUNCTION | (async ? SCOPE_ASYNC : 0) | (generator ? SCOPE_GENERATOR : 0)
}
// Used in checkLVal and declareName to determine the type of a binding
var
BIND_NONE = 0, // Not a binding
BIND_VAR = 1, // Var-style binding
BIND_LEXICAL = 2, // Let- or const-style binding
BIND_FUNCTION = 3, // Function declaration
BIND_SIMPLE_CATCH = 4, // Simple (identifier pattern) catch binding
BIND_OUTSIDE = 5; // Special case for function names as bound inside the function
var Parser = function Parser(options, input, startPos) {
this.options = options = getOptions(options);
this.sourceFile = options.sourceFile;
this.keywords = wordsRegexp(keywords[options.ecmaVersion >= 6 ? 6 : options.sourceType === "module" ? "5module" : 5]);
var reserved = "";
if (options.allowReserved !== true) {
for (var v = options.ecmaVersion;; v--)
{ if (reserved = reservedWords[v]) { break } }
if (options.sourceType === "module") { reserved += " await"; }
}
this.reservedWords = wordsRegexp(reserved);
var reservedStrict = (reserved ? reserved + " " : "") + reservedWords.strict;
this.reservedWordsStrict = wordsRegexp(reservedStrict);
this.reservedWordsStrictBind = wordsRegexp(reservedStrict + " " + reservedWords.strictBind);
this.input = String(input);
// Used to signal to callers of `readWord1` whether the word
// contained any escape sequences. This is needed because words with
// escape sequences must not be interpreted as keywords.
this.containsEsc = false;
// Set up token state
// The current position of the tokenizer in the input.
if (startPos) {
this.pos = startPos;
this.lineStart = this.input.lastIndexOf("\n", startPos - 1) + 1;
this.curLine = this.input.slice(0, this.lineStart).split(lineBreak).length;
} else {
this.pos = this.lineStart = 0;
this.curLine = 1;
}
// Properties of the current token:
// Its type
this.type = types.eof;
// For tokens that include more information than their type, the value
this.value = null;
// Its start and end offset
this.start = this.end = this.pos;
// And, if locations are used, the {line, column} object
// corresponding to those offsets
this.startLoc = this.endLoc = this.curPosition();
// Position information for the previous token
this.lastTokEndLoc = this.lastTokStartLoc = null;
this.lastTokStart = this.lastTokEnd = this.pos;
// The context stack is used to superficially track syntactic
// context to predict whether a regular expression is allowed in a
// given position.
this.context = this.initialContext();
this.exprAllowed = true;
// Figure out if it's a module code.
this.inModule = options.sourceType === "module";
this.strict = this.inModule || this.strictDirective(this.pos);
// Used to signify the start of a potential arrow function
this.potentialArrowAt = -1;
// Positions to delayed-check that yield/await does not exist in default parameters.
this.yieldPos = this.awaitPos = this.awaitIdentPos = 0;
// Labels in scope.
this.labels = [];
// Thus-far undefined exports.
this.undefinedExports = {};
// If enabled, skip leading hashbang line.
if (this.pos === 0 && options.allowHashBang && this.input.slice(0, 2) === "#!")
{ this.skipLineComment(2); }
// Scope tracking for duplicate variable names (see scope.js)
this.scopeStack = [];
this.enterScope(SCOPE_TOP);
// For RegExp validation
this.regexpState = null;
};
var prototypeAccessors = { inFunction: { configurable: true },inGenerator: { configurable: true },inAsync: { configurable: true },allowSuper: { configurable: true },allowDirectSuper: { configurable: true },treatFunctionsAsVar: { configurable: true } };
Parser.prototype.parse = function parse () {
var node = this.options.program || this.startNode();
this.nextToken();
return this.parseTopLevel(node)
};
prototypeAccessors.inFunction.get = function () { return (this.currentVarScope().flags & SCOPE_FUNCTION) > 0 };
prototypeAccessors.inGenerator.get = function () { return (this.currentVarScope().flags & SCOPE_GENERATOR) > 0 };
prototyp