356 lines
9.5 KiB
JavaScript
356 lines
9.5 KiB
JavaScript
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/*
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MIT License http://www.opensource.org/licenses/mit-license.php
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Author Tobias Koppers @sokra
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*/
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"use strict";
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const memoize = require("./util/memoize");
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/** @typedef {import("webpack-sources").Source} Source */
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/** @typedef {import("./ChunkGraph")} ChunkGraph */
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/** @typedef {import("./DependenciesBlock")} DependenciesBlock */
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/** @typedef {import("./DependencyTemplates")} DependencyTemplates */
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/** @typedef {import("./Module")} Module */
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/** @typedef {import("./ModuleGraph")} ModuleGraph */
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/** @typedef {import("./ModuleGraphConnection")} ModuleGraphConnection */
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/** @typedef {import("./ModuleGraphConnection").ConnectionState} ConnectionState */
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/** @typedef {import("./RuntimeTemplate")} RuntimeTemplate */
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/** @typedef {import("./WebpackError")} WebpackError */
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/** @typedef {import("./util/Hash")} Hash */
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/** @typedef {import("./util/runtime").RuntimeSpec} RuntimeSpec */
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/**
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* @typedef {Object} UpdateHashContext
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* @property {ChunkGraph} chunkGraph
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* @property {RuntimeSpec} runtime
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* @property {RuntimeTemplate=} runtimeTemplate
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*/
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/**
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* @typedef {Object} SourcePosition
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* @property {number} line
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* @property {number=} column
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*/
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/**
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* @typedef {Object} RealDependencyLocation
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* @property {SourcePosition} start
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* @property {SourcePosition=} end
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* @property {number=} index
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*/
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/**
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* @typedef {Object} SyntheticDependencyLocation
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* @property {string} name
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* @property {number=} index
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*/
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/** @typedef {SyntheticDependencyLocation|RealDependencyLocation} DependencyLocation */
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/**
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* @typedef {Object} ExportSpec
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* @property {string} name the name of the export
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* @property {boolean=} canMangle can the export be renamed (defaults to true)
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* @property {boolean=} terminalBinding is the export a terminal binding that should be checked for export star conflicts
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* @property {(string | ExportSpec)[]=} exports nested exports
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* @property {ModuleGraphConnection=} from when reexported: from which module
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* @property {string[] | null=} export when reexported: from which export
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* @property {number=} priority when reexported: with which priority
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* @property {boolean=} hidden export is not visible, because another export blends over it
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*/
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/**
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* @typedef {Object} ExportsSpec
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* @property {(string | ExportSpec)[] | true | null} exports exported names, true for unknown exports or null for no exports
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* @property {Set<string>=} excludeExports when exports = true, list of unaffected exports
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* @property {Set<string>=} hideExports list of maybe prior exposed, but now hidden exports
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* @property {ModuleGraphConnection=} from when reexported: from which module
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* @property {number=} priority when reexported: with which priority
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* @property {boolean=} canMangle can the export be renamed (defaults to true)
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* @property {boolean=} terminalBinding are the exports terminal bindings that should be checked for export star conflicts
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* @property {Module[]=} dependencies module on which the result depends on
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*/
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/**
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* @typedef {Object} ReferencedExport
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* @property {string[]} name name of the referenced export
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* @property {boolean=} canMangle when false, referenced export can not be mangled, defaults to true
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*/
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const TRANSITIVE = Symbol("transitive");
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const getIgnoredModule = memoize(() => {
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const RawModule = require("./RawModule");
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return new RawModule("/* (ignored) */", `ignored`, `(ignored)`);
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});
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class Dependency {
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constructor() {
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/** @type {Module} */
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this._parentModule = undefined;
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/** @type {DependenciesBlock} */
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this._parentDependenciesBlock = undefined;
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/** @type {number} */
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this._parentDependenciesBlockIndex = -1;
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// TODO check if this can be moved into ModuleDependency
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/** @type {boolean} */
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this.weak = false;
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// TODO check if this can be moved into ModuleDependency
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/** @type {boolean} */
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this.optional = false;
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this._locSL = 0;
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this._locSC = 0;
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this._locEL = 0;
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this._locEC = 0;
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this._locI = undefined;
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this._locN = undefined;
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this._loc = undefined;
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}
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/**
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* @returns {string} a display name for the type of dependency
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*/
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get type() {
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return "unknown";
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}
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/**
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* @returns {string} a dependency category, typical categories are "commonjs", "amd", "esm"
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*/
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get category() {
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return "unknown";
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}
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/**
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* @returns {DependencyLocation} location
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*/
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get loc() {
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if (this._loc !== undefined) return this._loc;
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/** @type {SyntheticDependencyLocation & RealDependencyLocation} */
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const loc = {};
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if (this._locSL > 0) {
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loc.start = { line: this._locSL, column: this._locSC };
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}
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if (this._locEL > 0) {
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loc.end = { line: this._locEL, column: this._locEC };
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}
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if (this._locN !== undefined) {
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loc.name = this._locN;
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}
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if (this._locI !== undefined) {
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loc.index = this._locI;
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}
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return (this._loc = loc);
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}
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set loc(loc) {
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if ("start" in loc && typeof loc.start === "object") {
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this._locSL = loc.start.line || 0;
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this._locSC = loc.start.column || 0;
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} else {
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this._locSL = 0;
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this._locSC = 0;
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}
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if ("end" in loc && typeof loc.end === "object") {
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this._locEL = loc.end.line || 0;
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this._locEC = loc.end.column || 0;
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} else {
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this._locEL = 0;
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this._locEC = 0;
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}
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if ("index" in loc) {
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this._locI = loc.index;
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} else {
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this._locI = undefined;
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}
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if ("name" in loc) {
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this._locN = loc.name;
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} else {
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this._locN = undefined;
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}
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this._loc = loc;
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}
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setLoc(startLine, startColumn, endLine, endColumn) {
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this._locSL = startLine;
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this._locSC = startColumn;
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this._locEL = endLine;
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this._locEC = endColumn;
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this._locI = undefined;
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this._locN = undefined;
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this._loc = undefined;
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}
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/**
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* @returns {string | undefined} a request context
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*/
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getContext() {
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return undefined;
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}
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/**
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* @returns {string | null} an identifier to merge equal requests
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*/
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getResourceIdentifier() {
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return null;
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}
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/**
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* @returns {boolean | TRANSITIVE} true, when changes to the referenced module could affect the referencing module; TRANSITIVE, when changes to the referenced module could affect referencing modules of the referencing module
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*/
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couldAffectReferencingModule() {
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return TRANSITIVE;
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}
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/**
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* Returns the referenced module and export
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* @deprecated
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* @param {ModuleGraph} moduleGraph module graph
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* @returns {never} throws error
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*/
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getReference(moduleGraph) {
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throw new Error(
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"Dependency.getReference was removed in favor of Dependency.getReferencedExports, ModuleGraph.getModule and ModuleGraph.getConnection().active"
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);
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}
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/**
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* Returns list of exports referenced by this dependency
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* @param {ModuleGraph} moduleGraph module graph
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* @param {RuntimeSpec} runtime the runtime for which the module is analysed
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* @returns {(string[] | ReferencedExport)[]} referenced exports
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*/
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getReferencedExports(moduleGraph, runtime) {
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return Dependency.EXPORTS_OBJECT_REFERENCED;
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}
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/**
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* @param {ModuleGraph} moduleGraph module graph
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* @returns {null | false | function(ModuleGraphConnection, RuntimeSpec): ConnectionState} function to determine if the connection is active
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*/
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getCondition(moduleGraph) {
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return null;
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}
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/**
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* Returns the exported names
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* @param {ModuleGraph} moduleGraph module graph
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* @returns {ExportsSpec | undefined} export names
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*/
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getExports(moduleGraph) {
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return undefined;
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}
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/**
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* Returns warnings
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* @param {ModuleGraph} moduleGraph module graph
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* @returns {WebpackError[]} warnings
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*/
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getWarnings(moduleGraph) {
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return null;
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}
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/**
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* Returns errors
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* @param {ModuleGraph} moduleGraph module graph
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* @returns {WebpackError[]} errors
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*/
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getErrors(moduleGraph) {
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return null;
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}
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/**
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* Update the hash
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* @param {Hash} hash hash to be updated
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* @param {UpdateHashContext} context context
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* @returns {void}
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*/
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updateHash(hash, context) {}
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/**
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* implement this method to allow the occurrence order plugin to count correctly
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* @returns {number} count how often the id is used in this dependency
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*/
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getNumberOfIdOccurrences() {
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return 1;
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}
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/**
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* @param {ModuleGraph} moduleGraph the module graph
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* @returns {ConnectionState} how this dependency connects the module to referencing modules
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*/
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getModuleEvaluationSideEffectsState(moduleGraph) {
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return true;
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}
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/**
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* @param {string} context context directory
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* @returns {Module} a module
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*/
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createIgnoredModule(context) {
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return getIgnoredModule();
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}
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serialize({ write }) {
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write(this.weak);
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write(this.optional);
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write(this._locSL);
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write(this._locSC);
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write(this._locEL);
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write(this._locEC);
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write(this._locI);
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write(this._locN);
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}
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deserialize({ read }) {
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this.weak = read();
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this.optional = read();
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this._locSL = read();
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this._locSC = read();
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this._locEL = read();
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this._locEC = read();
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this._locI = read();
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this._locN = read();
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}
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}
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/** @type {string[][]} */
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Dependency.NO_EXPORTS_REFERENCED = [];
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/** @type {string[][]} */
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Dependency.EXPORTS_OBJECT_REFERENCED = [[]];
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Object.defineProperty(Dependency.prototype, "module", {
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/**
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* @deprecated
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* @returns {never} throws
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*/
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get() {
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throw new Error(
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"module property was removed from Dependency (use compilation.moduleGraph.getModule(dependency) instead)"
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);
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},
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/**
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* @deprecated
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* @returns {never} throws
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*/
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set() {
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throw new Error(
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"module property was removed from Dependency (use compilation.moduleGraph.updateModule(dependency, module) instead)"
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);
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}
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});
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Object.defineProperty(Dependency.prototype, "disconnect", {
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get() {
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throw new Error(
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"disconnect was removed from Dependency (Dependency no longer carries graph specific information)"
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);
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}
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});
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Dependency.TRANSITIVE = TRANSITIVE;
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module.exports = Dependency;
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