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1 files changed, 124 insertions, 0 deletions

diff --git a/node_modules/webpack/lib/DependenciesBlock.js b/node_modules/webpack/lib/DependenciesBlock.js
new file mode 100644
index 00000000..142f3eac
--- /dev/null
+++ b/node_modules/webpack/lib/DependenciesBlock.js
@@ -0,0 +1,124 @@
+/*
+ MIT License http://www.opensource.org/licenses/mit-license.php
+ Author Tobias Koppers @sokra
+ */
+"use strict";
+
+const DependenciesBlockVariable = require("./DependenciesBlockVariable");
+
+/** @typedef {import("./ChunkGroup")} ChunkGroup */
+/** @typedef {import("./Dependency")} Dependency */
+/** @typedef {import("./AsyncDependenciesBlock")} AsyncDependenciesBlock */
+/** @typedef {import("./DependenciesBlockVariable")} DependenciesBlockVariable */
+/** @typedef {(d: Dependency) => boolean} DependencyFilterFunction */
+/** @typedef {import("./util/createHash").Hash} Hash */
+
+class DependenciesBlock {
+	constructor() {
+		/** @type {Dependency[]} */
+		this.dependencies = [];
+		/** @type {AsyncDependenciesBlock[]} */
+		this.blocks = [];
+		/** @type {DependenciesBlockVariable[]} */
+		this.variables = [];
+	}
+
+	/**
+	 * Adds a DependencyBlock to DependencyBlock relationship.
+	 * This is used for when a Module has a AsyncDependencyBlock tie (for code-splitting)
+	 *
+	 * @param {AsyncDependenciesBlock} block block being added
+	 * @returns {void}
+	 */
+	addBlock(block) {
+		this.blocks.push(block);
+		block.parent = this;
+	}
+
+	/**
+	 * @param {string} name name of dependency
+	 * @param {string} expression expression string for variable
+	 * @param {Dependency[]} dependencies dependency instances tied to variable
+	 * @returns {void}
+	 */
+	addVariable(name, expression, dependencies) {
+		for (let v of this.variables) {
+			if (v.name === name && v.expression === expression) {
+				return;
+			}
+		}
+		this.variables.push(
+			new DependenciesBlockVariable(name, expression, dependencies)
+		);
+	}
+
+	/**
+	 * @param {Dependency} dependency dependency being tied to block.
+	 * This is an "edge" pointing to another "node" on module graph.
+	 * @returns {void}
+	 */
+	addDependency(dependency) {
+		this.dependencies.push(dependency);
+	}
+
+	/**
+	 * @param {Dependency} dependency dependency being removed
+	 * @returns {void}
+	 */
+	removeDependency(dependency) {
+		const idx = this.dependencies.indexOf(dependency);
+		if (idx >= 0) {
+			this.dependencies.splice(idx, 1);
+		}
+	}
+
+	/**
+	 * @param {Hash} hash the hash used to track dependencies
+	 * @returns {void}
+	 */
+	updateHash(hash) {
+		for (const dep of this.dependencies) dep.updateHash(hash);
+		for (const block of this.blocks) block.updateHash(hash);
+		for (const variable of this.variables) variable.updateHash(hash);
+	}
+
+	disconnect() {
+		for (const dep of this.dependencies) dep.disconnect();
+		for (const block of this.blocks) block.disconnect();
+		for (const variable of this.variables) variable.disconnect();
+	}
+
+	unseal() {
+		for (const block of this.blocks) block.unseal();
+	}
+
+	/**
+	 * @param {DependencyFilterFunction} filter filter function for dependencies, gets passed all dependency ties from current instance
+	 * @returns {boolean} returns boolean for filter
+	 */
+	hasDependencies(filter) {
+		if (filter) {
+			for (const dep of this.dependencies) {
+				if (filter(dep)) return true;
+			}
+		} else {
+			if (this.dependencies.length > 0) {
+				return true;
+			}
+		}
+
+		for (const block of this.blocks) {
+			if (block.hasDependencies(filter)) return true;
+		}
+		for (const variable of this.variables) {
+			if (variable.hasDependencies(filter)) return true;
+		}
+		return false;
+	}
+
+	sortItems() {
+		for (const block of this.blocks) block.sortItems();
+	}
+}
+
+module.exports = DependenciesBlock;