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app_vue/node_modules/webpack/lib/dependencies/CachedConstDependency.js

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+/*
+	MIT License http://www.opensource.org/licenses/mit-license.php
+	Author Florent Cailhol @ooflorent
+*/
+
+"use strict";
+
+const DependencyTemplate = require("../DependencyTemplate");
+const InitFragment = require("../InitFragment");
+const makeSerializable = require("../util/makeSerializable");
+const NullDependency = require("./NullDependency");
+
+/** @typedef {import("webpack-sources").ReplaceSource} ReplaceSource */
+/** @typedef {import("../ChunkGraph")} ChunkGraph */
+/** @typedef {import("../Dependency")} Dependency */
+/** @typedef {import("../Dependency").UpdateHashContext} UpdateHashContext */
+/** @typedef {import("../DependencyTemplate").DependencyTemplateContext} DependencyTemplateContext */
+/** @typedef {import("../DependencyTemplates")} DependencyTemplates */
+/** @typedef {import("../ModuleGraph")} ModuleGraph */
+/** @typedef {import("../RuntimeTemplate")} RuntimeTemplate */
+/** @typedef {import("../javascript/JavascriptParser").Range} Range */
+/** @typedef {import("../serialization/ObjectMiddleware").ObjectDeserializerContext} ObjectDeserializerContext */
+/** @typedef {import("../serialization/ObjectMiddleware").ObjectSerializerContext} ObjectSerializerContext */
+/** @typedef {import("../util/Hash")} Hash */
+
+class CachedConstDependency extends NullDependency {
+	/**
+	 * @param {string} expression expression
+	 * @param {Range} range range
+	 * @param {string} identifier identifier
+	 */
+	constructor(expression, range, identifier) {
+		super();
+
+		this.expression = expression;
+		this.range = range;
+		this.identifier = identifier;
+		this._hashUpdate = undefined;
+	}
+
+	/**
+	 * @returns {string} hash update
+	 */
+	_createHashUpdate() {
+		return `${this.identifier}${this.range}${this.expression}`;
+	}
+
+	/**
+	 * Update the hash
+	 * @param {Hash} hash hash to be updated
+	 * @param {UpdateHashContext} context context
+	 * @returns {void}
+	 */
+	updateHash(hash, context) {
+		if (this._hashUpdate === undefined) {
+			this._hashUpdate = this._createHashUpdate();
+		}
+		hash.update(this._hashUpdate);
+	}
+
+	/**
+	 * @param {ObjectSerializerContext} context context
+	 */
+	serialize(context) {
+		const { write } = context;
+
+		write(this.expression);
+		write(this.range);
+		write(this.identifier);
+
+		super.serialize(context);
+	}
+
+	/**
+	 * @param {ObjectDeserializerContext} context context
+	 */
+	deserialize(context) {
+		const { read } = context;
+
+		this.expression = read();
+		this.range = read();
+		this.identifier = read();
+
+		super.deserialize(context);
+	}
+}
+
+makeSerializable(
+	CachedConstDependency,
+	"webpack/lib/dependencies/CachedConstDependency"
+);
+
+CachedConstDependency.Template = class CachedConstDependencyTemplate extends (
+	DependencyTemplate
+) {
+	/**
+	 * @param {Dependency} dependency the dependency for which the template should be applied
+	 * @param {ReplaceSource} source the current replace source which can be modified
+	 * @param {DependencyTemplateContext} templateContext the context object
+	 * @returns {void}
+	 */
+	apply(
+		dependency,
+		source,
+		{ runtimeTemplate, dependencyTemplates, initFragments }
+	) {
+		const dep = /** @type {CachedConstDependency} */ (dependency);
+
+		initFragments.push(
+			new InitFragment(
+				`var ${dep.identifier} = ${dep.expression};\n`,
+				InitFragment.STAGE_CONSTANTS,
+				0,
+				`const ${dep.identifier}`
+			)
+		);
+
+		if (typeof dep.range === "number") {
+			source.insert(dep.range, dep.identifier);
+
+			return;
+		}
+
+		source.replace(dep.range[0], dep.range[1] - 1, dep.identifier);
+	}
+};
+
+module.exports = CachedConstDependency;