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1 files changed, 72 insertions, 0 deletions

diff --git a/node_modules/webpack/lib/DependenciesBlockVariable.js b/node_modules/webpack/lib/DependenciesBlockVariable.js
new file mode 100644
index 00000000..c4ed9162
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+++ b/node_modules/webpack/lib/DependenciesBlockVariable.js
@@ -0,0 +1,72 @@
+/*
+	MIT License http://www.opensource.org/licenses/mit-license.php
+	Author Tobias Koppers @sokra
+*/
+"use strict";
+
+const { RawSource, ReplaceSource } = require("webpack-sources");
+
+/** @typedef {import("./Dependency")} Dependency */
+/** @typedef {import("./Dependency").DependencyTemplate} DependencyTemplate */
+/** @typedef {import("./RuntimeTemplate")} RuntimeTemplate */
+/** @typedef {import("./util/createHash").Hash} Hash */
+/** @typedef {(d: Dependency) => boolean} DependencyFilterFunction */
+/** @typedef {Map<Function, DependencyTemplate>} DependencyTemplates */
+
+class DependenciesBlockVariable {
+	/**
+	 * Creates an instance of DependenciesBlockVariable.
+	 * @param {string} name name of DependenciesBlockVariable
+	 * @param {string} expression expression string
+	 * @param {Dependency[]=} dependencies dependencies tied to this varaiable
+	 */
+	constructor(name, expression, dependencies) {
+		this.name = name;
+		this.expression = expression;
+		this.dependencies = dependencies || [];
+	}
+
+	/**
+	 * @param {Hash} hash hash for instance to update
+	 * @returns {void}
+	 */
+	updateHash(hash) {
+		hash.update(this.name);
+		hash.update(this.expression);
+		for (const d of this.dependencies) {
+			d.updateHash(hash);
+		}
+	}
+
+	/**
+	 * @param {DependencyTemplates} dependencyTemplates Dependency constructors and templates Map.
+	 * @param {RuntimeTemplate} runtimeTemplate runtimeTemplate to generate expression souce
+	 * @returns {ReplaceSource} returns constructed source for expression via templates
+	 */
+	expressionSource(dependencyTemplates, runtimeTemplate) {
+		const source = new ReplaceSource(new RawSource(this.expression));
+		for (const dep of this.dependencies) {
+			const template = dependencyTemplates.get(dep.constructor);
+			if (!template) {
+				throw new Error(`No template for dependency: ${dep.constructor.name}`);
+			}
+			template.apply(dep, source, runtimeTemplate, dependencyTemplates);
+		}
+		return source;
+	}
+
+	disconnect() {
+		for (const d of this.dependencies) {
+			d.disconnect();
+		}
+	}
+
+	hasDependencies(filter) {
+		if (filter) {
+			return this.dependencies.some(filter);
+		}
+		return this.dependencies.length > 0;
+	}
+}
+
+module.exports = DependenciesBlockVariable;