179 lines
		
	
	
		
			4.6 KiB
		
	
	
	
		
			JavaScript
		
	
	
	
	
	
			
		
		
	
	
			179 lines
		
	
	
		
			4.6 KiB
		
	
	
	
		
			JavaScript
		
	
	
	
	
	
/*
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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 Dependency = require("../Dependency");
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const DependencyTemplate = require("../DependencyTemplate");
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const makeSerializable = require("../util/makeSerializable");
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const memoize = require("../util/memoize");
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/** @typedef {import("../ContextModule").ContextOptions} ContextOptions */
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/** @typedef {import("../Dependency").TRANSITIVE} TRANSITIVE */
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/** @typedef {import("../ModuleGraph")} ModuleGraph */
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/** @typedef {import("../WebpackError")} WebpackError */
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/** @typedef {import("../serialization/ObjectMiddleware").ObjectDeserializerContext} ObjectDeserializerContext */
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/** @typedef {import("../serialization/ObjectMiddleware").ObjectSerializerContext} ObjectSerializerContext */
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const getCriticalDependencyWarning = memoize(() =>
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	require("./CriticalDependencyWarning")
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);
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/** @typedef {ContextOptions & { request: string }} ContextDependencyOptions */
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/**
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 * @param {RegExp | null | undefined} r regexp
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 * @returns {string} stringified regexp
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 */
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const regExpToString = (r) => (r ? String(r) : "");
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class ContextDependency extends Dependency {
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	/**
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	 * @param {ContextDependencyOptions} options options for the context module
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	 * @param {string=} context request context
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	 */
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	constructor(options, context) {
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		super();
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		this.options = options;
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		this.userRequest = this.options && this.options.request;
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		/** @type {false | undefined | string} */
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		this.critical = false;
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		this.hadGlobalOrStickyRegExp = false;
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		if (
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			this.options &&
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			(this.options.regExp.global || this.options.regExp.sticky)
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		) {
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			this.options = { ...this.options, regExp: null };
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			this.hadGlobalOrStickyRegExp = true;
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		}
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		this.request = undefined;
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		this.range = undefined;
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		this.valueRange = undefined;
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		/** @type {boolean | string | undefined} */
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		this.inShorthand = undefined;
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		// TODO refactor this
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		this.replaces = undefined;
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		this._requestContext = context;
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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 this._requestContext;
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	}
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	get category() {
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		return "commonjs";
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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 true;
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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 (
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			`context${this._requestContext || ""}|ctx request${
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				this.options.request
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			} ${this.options.recursive} ` +
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			`${regExpToString(this.options.regExp)} ${regExpToString(
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				this.options.include
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			)} ${regExpToString(this.options.exclude)} ` +
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			`${this.options.mode} ${this.options.chunkName} ` +
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			`${JSON.stringify(this.options.groupOptions)}` +
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			`${
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				this.options.referencedExports
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					? ` ${JSON.stringify(this.options.referencedExports)}`
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					: ""
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			}`
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		);
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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[] | null | undefined} warnings
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	 */
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	getWarnings(moduleGraph) {
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		let warnings = super.getWarnings(moduleGraph);
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		if (this.critical) {
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			if (!warnings) warnings = [];
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			const CriticalDependencyWarning = getCriticalDependencyWarning();
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			warnings.push(new CriticalDependencyWarning(this.critical));
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		}
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		if (this.hadGlobalOrStickyRegExp) {
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			if (!warnings) warnings = [];
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			const CriticalDependencyWarning = getCriticalDependencyWarning();
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			warnings.push(
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				new CriticalDependencyWarning(
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					"Contexts can't use RegExps with the 'g' or 'y' flags."
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				)
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			);
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		}
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		return warnings;
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	}
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	/**
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	 * @param {ObjectSerializerContext} context context
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	 */
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	serialize(context) {
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		const { write } = context;
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		write(this.options);
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		write(this.userRequest);
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		write(this.critical);
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		write(this.hadGlobalOrStickyRegExp);
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		write(this.request);
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		write(this._requestContext);
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		write(this.range);
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		write(this.valueRange);
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		write(this.prepend);
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		write(this.replaces);
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		super.serialize(context);
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	}
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	/**
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	 * @param {ObjectDeserializerContext} context context
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	 */
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	deserialize(context) {
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		const { read } = context;
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		this.options = read();
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		this.userRequest = read();
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		this.critical = read();
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		this.hadGlobalOrStickyRegExp = read();
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		this.request = read();
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		this._requestContext = read();
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		this.range = read();
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		this.valueRange = read();
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		this.prepend = read();
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		this.replaces = read();
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		super.deserialize(context);
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	}
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}
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makeSerializable(
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	ContextDependency,
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	"webpack/lib/dependencies/ContextDependency"
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);
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ContextDependency.Template = DependencyTemplate;
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module.exports = ContextDependency;
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