1 files changed, 156 insertions, 0 deletions
diff --git a/node_modules/webpack/lib/CodeGenerationResults.js b/node_modules/webpack/lib/CodeGenerationResults.js
new file mode 100644
index 00000000..f0759985
--- /dev/null
+++ b/node_modules/webpack/lib/CodeGenerationResults.js
@@ -0,0 +1,156 @@
+/*
+	MIT License http://www.opensource.org/licenses/mit-license.php
+	Author Tobias Koppers @sokra
+*/
+
+"use strict";
+
+const { getOrInsert } = require("./util/MapHelpers");
+const { first } = require("./util/SetHelpers");
+const createHash = require("./util/createHash");
+const { runtimeToString, RuntimeSpecMap } = require("./util/runtime");
+
+/** @typedef {import("webpack-sources").Source} Source */
+/** @typedef {import("./Module")} Module */
+/** @typedef {import("./Module").CodeGenerationResult} CodeGenerationResult */
+/** @typedef {typeof import("./util/Hash")} Hash */
+/** @typedef {import("./util/runtime").RuntimeSpec} RuntimeSpec */
+
+class CodeGenerationResults {
+	/**
+	 * @param {string | Hash} hashFunction the hash function to use
+	 */
+	constructor(hashFunction = "md4") {
+		/** @type {Map<Module, RuntimeSpecMap<CodeGenerationResult>>} */
+		this.map = new Map();
+		this._hashFunction = hashFunction;
+	}
+
+	/**
+	 * @param {Module} module the module
+	 * @param {RuntimeSpec} runtime runtime(s)
+	 * @returns {CodeGenerationResult} the CodeGenerationResult
+	 */
+	get(module, runtime) {
+		const entry = this.map.get(module);
+		if (entry === undefined) {
+			throw new Error(
+				`No code generation entry for ${module.identifier()} (existing entries: ${Array.from(
+					this.map.keys(),
+					m => m.identifier()
+				).join(", ")})`
+			);
+		}
+		if (runtime === undefined) {
+			if (
+				/** @type {RuntimeSpecMap<CodeGenerationResult>} */ (entry).size > 1
+			) {
+				const results = new Set(entry.values());
+				if (results.size !== 1) {
+					throw new Error(
+						`No unique code generation entry for unspecified runtime for ${module.identifier()} (existing runtimes: ${Array.from(
+							entry.keys(),
+							r => runtimeToString(r)
+						).join(", ")}).
+Caller might not support runtime-dependent code generation (opt-out via optimization.usedExports: "global").`
+					);
+				}
+				return /** @type {CodeGenerationResult} */ (first(results));
+			}
+			return /** @type {CodeGenerationResult} */ (entry.values().next().value);
+		}
+		const result = entry.get(runtime);
+		if (result === undefined) {
+			throw new Error(
+				`No code generation entry for runtime ${runtimeToString(
+					runtime
+				)} for ${module.identifier()} (existing runtimes: ${Array.from(
+					entry.keys(),
+					r => runtimeToString(r)
+				).join(", ")})`
+			);
+		}
+		return result;
+	}
+
+	/**
+	 * @param {Module} module the module
+	 * @param {RuntimeSpec} runtime runtime(s)
+	 * @returns {boolean} true, when we have data for this
+	 */
+	has(module, runtime) {
+		const entry = this.map.get(module);
+		if (entry === undefined) {
+			return false;
+		}
+		if (runtime !== undefined) {
+			return entry.has(runtime);
+		} else if (entry.size > 1) {
+			const results = new Set(entry.values());
+			return results.size === 1;
+		}
+		return entry.size === 1;
+	}
+
+	/**
+	 * @param {Module} module the module
+	 * @param {RuntimeSpec} runtime runtime(s)
+	 * @param {string} sourceType the source type
+	 * @returns {Source} a source
+	 */
+	getSource(module, runtime, sourceType) {
+		return this.get(module, runtime).sources.get(sourceType);
+	}
+
+	/**
+	 * @param {Module} module the module
+	 * @param {RuntimeSpec} runtime runtime(s)
+	 * @returns {ReadonlySet<string>} runtime requirements
+	 */
+	getRuntimeRequirements(module, runtime) {
+		return this.get(module, runtime).runtimeRequirements;
+	}
+
+	/**
+	 * @param {Module} module the module
+	 * @param {RuntimeSpec} runtime runtime(s)
+	 * @param {string} key data key
+	 * @returns {any} data generated by code generation
+	 */
+	getData(module, runtime, key) {
+		const data = this.get(module, runtime).data;
+		return data === undefined ? undefined : data.get(key);
+	}
+
+	/**
+	 * @param {Module} module the module
+	 * @param {RuntimeSpec} runtime runtime(s)
+	 * @returns {any} hash of the code generation
+	 */
+	getHash(module, runtime) {
+		const info = this.get(module, runtime);
+		if (info.hash !== undefined) return info.hash;
+		const hash = createHash(this._hashFunction);
+		for (const [type, source] of info.sources) {
+			hash.update(type);
+			source.updateHash(hash);
+		}
+		if (info.runtimeRequirements) {
+			for (const rr of info.runtimeRequirements) hash.update(rr);
+		}
+		return (info.hash = /** @type {string} */ (hash.digest("hex")));
+	}
+
+	/**
+	 * @param {Module} module the module
+	 * @param {RuntimeSpec} runtime runtime(s)
+	 * @param {CodeGenerationResult} result result from module
+	 * @returns {void}
+	 */
+	add(module, runtime, result) {
+		const map = getOrInsert(this.map, module, () => new RuntimeSpecMap());
+		map.set(runtime, result);
+	}
+}
+
+module.exports = CodeGenerationResults;