1 files changed, 582 insertions, 0 deletions
diff --git a/node_modules/webpack/lib/NormalModule.js b/node_modules/webpack/lib/NormalModule.js
new file mode 100644
index 0000000..76aa1bd
--- /dev/null
+++ b/node_modules/webpack/lib/NormalModule.js
@@ -0,0 +1,582 @@
+/*
+	MIT License http://www.opensource.org/licenses/mit-license.php
+	Author Tobias Koppers @sokra
+*/
+"use strict";
+
+const NativeModule = require("module");
+
+const {
+	CachedSource,
+	LineToLineMappedSource,
+	OriginalSource,
+	RawSource,
+	SourceMapSource
+} = require("webpack-sources");
+const { getContext, runLoaders } = require("loader-runner");
+
+const WebpackError = require("./WebpackError");
+const Module = require("./Module");
+const ModuleParseError = require("./ModuleParseError");
+const ModuleBuildError = require("./ModuleBuildError");
+const ModuleError = require("./ModuleError");
+const ModuleWarning = require("./ModuleWarning");
+const createHash = require("./util/createHash");
+const contextify = require("./util/identifier").contextify;
+
+/** @typedef {import("./util/createHash").Hash} Hash */
+
+const asString = buf => {
+	if (Buffer.isBuffer(buf)) {
+		return buf.toString("utf-8");
+	}
+	return buf;
+};
+
+const asBuffer = str => {
+	if (!Buffer.isBuffer(str)) {
+		return Buffer.from(str, "utf-8");
+	}
+	return str;
+};
+
+class NonErrorEmittedError extends WebpackError {
+	constructor(error) {
+		super();
+
+		this.name = "NonErrorEmittedError";
+		this.message = "(Emitted value instead of an instance of Error) " + error;
+
+		Error.captureStackTrace(this, this.constructor);
+	}
+}
+
+/**
+ * @typedef {Object} CachedSourceEntry
+ * @property {TODO} source the generated source
+ * @property {string} hash the hash value
+ */
+
+class NormalModule extends Module {
+	constructor({
+		type,
+		request,
+		userRequest,
+		rawRequest,
+		loaders,
+		resource,
+		matchResource,
+		parser,
+		generator,
+		resolveOptions
+	}) {
+		super(type, getContext(resource));
+
+		// Info from Factory
+		this.request = request;
+		this.userRequest = userRequest;
+		this.rawRequest = rawRequest;
+		this.binary = type.startsWith("webassembly");
+		this.parser = parser;
+		this.generator = generator;
+		this.resource = resource;
+		this.matchResource = matchResource;
+		this.loaders = loaders;
+		if (resolveOptions !== undefined) this.resolveOptions = resolveOptions;
+
+		// Info from Build
+		this.error = null;
+		this._source = null;
+		this._sourceSize = null;
+		this._buildHash = "";
+		this.buildTimestamp = undefined;
+		/** @private @type {Map<string, CachedSourceEntry>} */
+		this._cachedSources = new Map();
+
+		// Options for the NormalModule set by plugins
+		// TODO refactor this -> options object filled from Factory
+		this.useSourceMap = false;
+		this.lineToLine = false;
+
+		// Cache
+		this._lastSuccessfulBuildMeta = {};
+	}
+
+	identifier() {
+		return this.request;
+	}
+
+	readableIdentifier(requestShortener) {
+		return requestShortener.shorten(this.userRequest);
+	}
+
+	libIdent(options) {
+		return contextify(options.context, this.userRequest);
+	}
+
+	nameForCondition() {
+		const resource = this.matchResource || this.resource;
+		const idx = resource.indexOf("?");
+		if (idx >= 0) return resource.substr(0, idx);
+		return resource;
+	}
+
+	updateCacheModule(module) {
+		this.type = module.type;
+		this.request = module.request;
+		this.userRequest = module.userRequest;
+		this.rawRequest = module.rawRequest;
+		this.parser = module.parser;
+		this.generator = module.generator;
+		this.resource = module.resource;
+		this.matchResource = module.matchResource;
+		this.loaders = module.loaders;
+		this.resolveOptions = module.resolveOptions;
+	}
+
+	createSourceForAsset(name, content, sourceMap) {
+		if (!sourceMap) {
+			return new RawSource(content);
+		}
+
+		if (typeof sourceMap === "string") {
+			return new OriginalSource(content, sourceMap);
+		}
+
+		return new SourceMapSource(content, name, sourceMap);
+	}
+
+	createLoaderContext(resolver, options, compilation, fs) {
+		const requestShortener = compilation.runtimeTemplate.requestShortener;
+		const getCurrentLoaderName = () => {
+			const currentLoader = this.getCurrentLoader(loaderContext);
+			if (!currentLoader) return "(not in loader scope)";
+			return requestShortener.shorten(currentLoader.loader);
+		};
+		const loaderContext = {
+			version: 2,
+			emitWarning: warning => {
+				if (!(warning instanceof Error)) {
+					warning = new NonErrorEmittedError(warning);
+				}
+				this.warnings.push(
+					new ModuleWarning(this, warning, {
+						from: getCurrentLoaderName()
+					})
+				);
+			},
+			emitError: error => {
+				if (!(error instanceof Error)) {
+					error = new NonErrorEmittedError(error);
+				}
+				this.errors.push(
+					new ModuleError(this, error, {
+						from: getCurrentLoaderName()
+					})
+				);
+			},
+			getLogger: name => {
+				const currentLoader = this.getCurrentLoader(loaderContext);
+				return compilation.getLogger(() =>
+					[currentLoader && currentLoader.loader, name, this.identifier()]
+						.filter(Boolean)
+						.join("|")
+				);
+			},
+			// TODO remove in webpack 5
+			exec: (code, filename) => {
+				// @ts-ignore Argument of type 'this' is not assignable to parameter of type 'Module'.
+				const module = new NativeModule(filename, this);
+				// @ts-ignore _nodeModulePaths is deprecated and undocumented Node.js API
+				module.paths = NativeModule._nodeModulePaths(this.context);
+				module.filename = filename;
+				module._compile(code, filename);
+				return module.exports;
+			},
+			resolve(context, request, callback) {
+				resolver.resolve({}, context, request, {}, callback);
+			},
+			getResolve(options) {
+				const child = options ? resolver.withOptions(options) : resolver;
+				return (context, request, callback) => {
+					if (callback) {
+						child.resolve({}, context, request, {}, callback);
+					} else {
+						return new Promise((resolve, reject) => {
+							child.resolve({}, context, request, {}, (err, result) => {
+								if (err) reject(err);
+								else resolve(result);
+							});
+						});
+					}
+				};
+			},
+			emitFile: (name, content, sourceMap, assetInfo) => {
+				if (!this.buildInfo.assets) {
+					this.buildInfo.assets = Object.create(null);
+					this.buildInfo.assetsInfo = new Map();
+				}
+				this.buildInfo.assets[name] = this.createSourceForAsset(
+					name,
+					content,
+					sourceMap
+				);
+				this.buildInfo.assetsInfo.set(name, assetInfo);
+			},
+			rootContext: options.context,
+			webpack: true,
+			sourceMap: !!this.useSourceMap,
+			mode: options.mode || "production",
+			_module: this,
+			_compilation: compilation,
+			_compiler: compilation.compiler,
+			fs: fs
+		};
+
+		compilation.hooks.normalModuleLoader.call(loaderContext, this);
+		if (options.loader) {
+			Object.assign(loaderContext, options.loader);
+		}
+
+		return loaderContext;
+	}
+
+	getCurrentLoader(loaderContext, index = loaderContext.loaderIndex) {
+		if (
+			this.loaders &&
+			this.loaders.length &&
+			index < this.loaders.length &&
+			index >= 0 &&
+			this.loaders[index]
+		) {
+			return this.loaders[index];
+		}
+		return null;
+	}
+
+	createSource(source, resourceBuffer, sourceMap) {
+		// if there is no identifier return raw source
+		if (!this.identifier) {
+			return new RawSource(source);
+		}
+
+		// from here on we assume we have an identifier
+		const identifier = this.identifier();
+
+		if (this.lineToLine && resourceBuffer) {
+			return new LineToLineMappedSource(
+				source,
+				identifier,
+				asString(resourceBuffer)
+			);
+		}
+
+		if (this.useSourceMap && sourceMap) {
+			return new SourceMapSource(source, identifier, sourceMap);
+		}
+
+		if (Buffer.isBuffer(source)) {
+			// @ts-ignore
+			// TODO We need to fix @types/webpack-sources to allow RawSource to take a Buffer | string
+			return new RawSource(source);
+		}
+
+		return new OriginalSource(source, identifier);
+	}
+
+	doBuild(options, compilation, resolver, fs, callback) {
+		const loaderContext = this.createLoaderContext(
+			resolver,
+			options,
+			compilation,
+			fs
+		);
+
+		runLoaders(
+			{
+				resource: this.resource,
+				loaders: this.loaders,
+				context: loaderContext,
+				readResource: fs.readFile.bind(fs)
+			},
+			(err, result) => {
+				if (result) {
+					this.buildInfo.cacheable = result.cacheable;
+					this.buildInfo.fileDependencies = new Set(result.fileDependencies);
+					this.buildInfo.contextDependencies = new Set(
+						result.contextDependencies
+					);
+				}
+
+				if (err) {
+					if (!(err instanceof Error)) {
+						err = new NonErrorEmittedError(err);
+					}
+					const currentLoader = this.getCurrentLoader(loaderContext);
+					const error = new ModuleBuildError(this, err, {
+						from:
+							currentLoader &&
+							compilation.runtimeTemplate.requestShortener.shorten(
+								currentLoader.loader
+							)
+					});
+					return callback(error);
+				}
+
+				const resourceBuffer = result.resourceBuffer;
+				const source = result.result[0];
+				const sourceMap = result.result.length >= 1 ? result.result[1] : null;
+				const extraInfo = result.result.length >= 2 ? result.result[2] : null;
+
+				if (!Buffer.isBuffer(source) && typeof source !== "string") {
+					const currentLoader = this.getCurrentLoader(loaderContext, 0);
+					const err = new Error(
+						`Final loader (${
+							currentLoader
+								? compilation.runtimeTemplate.requestShortener.shorten(
+										currentLoader.loader
+								  )
+								: "unknown"
+						}) didn't return a Buffer or String`
+					);
+					const error = new ModuleBuildError(this, err);
+					return callback(error);
+				}
+
+				this._source = this.createSource(
+					this.binary ? asBuffer(source) : asString(source),
+					resourceBuffer,
+					sourceMap
+				);
+				this._sourceSize = null;
+				this._ast =
+					typeof extraInfo === "object" &&
+					extraInfo !== null &&
+					extraInfo.webpackAST !== undefined
+						? extraInfo.webpackAST
+						: null;
+				return callback();
+			}
+		);
+	}
+
+	markModuleAsErrored(error) {
+		// Restore build meta from successful build to keep importing state
+		this.buildMeta = Object.assign({}, this._lastSuccessfulBuildMeta);
+		this.error = error;
+		this.errors.push(this.error);
+		this._source = new RawSource(
+			"throw new Error(" + JSON.stringify(this.error.message) + ");"
+		);
+		this._sourceSize = null;
+		this._ast = null;
+	}
+
+	applyNoParseRule(rule, content) {
+		// must start with "rule" if rule is a string
+		if (typeof rule === "string") {
+			return content.indexOf(rule) === 0;
+		}
+
+		if (typeof rule === "function") {
+			return rule(content);
+		}
+		// we assume rule is a regexp
+		return rule.test(content);
+	}
+
+	// check if module should not be parsed
+	// returns "true" if the module should !not! be parsed
+	// returns "false" if the module !must! be parsed
+	shouldPreventParsing(noParseRule, request) {
+		// if no noParseRule exists, return false
+		// the module !must! be parsed.
+		if (!noParseRule) {
+			return false;
+		}
+
+		// we only have one rule to check
+		if (!Array.isArray(noParseRule)) {
+			// returns "true" if the module is !not! to be parsed
+			return this.applyNoParseRule(noParseRule, request);
+		}
+
+		for (let i = 0; i < noParseRule.length; i++) {
+			const rule = noParseRule[i];
+			// early exit on first truthy match
+			// this module is !not! to be parsed
+			if (this.applyNoParseRule(rule, request)) {
+				return true;
+			}
+		}
+		// no match found, so this module !should! be parsed
+		return false;
+	}
+
+	_initBuildHash(compilation) {
+		const hash = createHash(compilation.outputOptions.hashFunction);
+		if (this._source) {
+			hash.update("source");
+			this._source.updateHash(hash);
+		}
+		hash.update("meta");
+		hash.update(JSON.stringify(this.buildMeta));
+		this._buildHash = /** @type {string} */ (hash.digest("hex"));
+	}
+
+	build(options, compilation, resolver, fs, callback) {
+		this.buildTimestamp = Date.now();
+		this.built = true;
+		this._source = null;
+		this._sourceSize = null;
+		this._ast = null;
+		this._buildHash = "";
+		this.error = null;
+		this.errors.length = 0;
+		this.warnings.length = 0;
+		this.buildMeta = {};
+		this.buildInfo = {
+			cacheable: false,
+			fileDependencies: new Set(),
+			contextDependencies: new Set(),
+			assets: undefined,
+			assetsInfo: undefined
+		};
+
+		return this.doBuild(options, compilation, resolver, fs, err => {
+			this._cachedSources.clear();
+
+			// if we have an error mark module as failed and exit
+			if (err) {
+				this.markModuleAsErrored(err);
+				this._initBuildHash(compilation);
+				return callback();
+			}
+
+			// check if this module should !not! be parsed.
+			// if so, exit here;
+			const noParseRule = options.module && options.module.noParse;
+			if (this.shouldPreventParsing(noParseRule, this.request)) {
+				this._initBuildHash(compilation);
+				return callback();
+			}
+
+			const handleParseError = e => {
+				const source = this._source.source();
+				const loaders = this.loaders.map(item =>
+					contextify(options.context, item.loader)
+				);
+				const error = new ModuleParseError(this, source, e, loaders);
+				this.markModuleAsErrored(error);
+				this._initBuildHash(compilation);
+				return callback();
+			};
+
+			const handleParseResult = result => {
+				this._lastSuccessfulBuildMeta = this.buildMeta;
+				this._initBuildHash(compilation);
+				return callback();
+			};
+
+			try {
+				const result = this.parser.parse(
+					this._ast || this._source.source(),
+					{
+						current: this,
+						module: this,
+						compilation: compilation,
+						options: options
+					},
+					(err, result) => {
+						if (err) {
+							handleParseError(err);
+						} else {
+							handleParseResult(result);
+						}
+					}
+				);
+				if (result !== undefined) {
+					// parse is sync
+					handleParseResult(result);
+				}
+			} catch (e) {
+				handleParseError(e);
+			}
+		});
+	}
+
+	getHashDigest(dependencyTemplates) {
+		// TODO webpack 5 refactor
+		let dtHash = dependencyTemplates.get("hash");
+		return `${this.hash}-${dtHash}`;
+	}
+
+	source(dependencyTemplates, runtimeTemplate, type = "javascript") {
+		const hashDigest = this.getHashDigest(dependencyTemplates);
+		const cacheEntry = this._cachedSources.get(type);
+		if (cacheEntry !== undefined && cacheEntry.hash === hashDigest) {
+			// We can reuse the cached source
+			return cacheEntry.source;
+		}
+
+		const source = this.generator.generate(
+			this,
+			dependencyTemplates,
+			runtimeTemplate,
+			type
+		);
+
+		const cachedSource = new CachedSource(source);
+		this._cachedSources.set(type, {
+			source: cachedSource,
+			hash: hashDigest
+		});
+		return cachedSource;
+	}
+
+	originalSource() {
+		return this._source;
+	}
+
+	needRebuild(fileTimestamps, contextTimestamps) {
+		// always try to rebuild in case of an error
+		if (this.error) return true;
+
+		// always rebuild when module is not cacheable
+		if (!this.buildInfo.cacheable) return true;
+
+		// Check timestamps of all dependencies
+		// Missing timestamp -> need rebuild
+		// Timestamp bigger than buildTimestamp -> need rebuild
+		for (const file of this.buildInfo.fileDependencies) {
+			const timestamp = fileTimestamps.get(file);
+			if (!timestamp) return true;
+			if (timestamp >= this.buildTimestamp) return true;
+		}
+		for (const file of this.buildInfo.contextDependencies) {
+			const timestamp = contextTimestamps.get(file);
+			if (!timestamp) return true;
+			if (timestamp >= this.buildTimestamp) return true;
+		}
+		// elsewise -> no rebuild needed
+		return false;
+	}
+
+	size() {
+		if (this._sourceSize === null) {
+			this._sourceSize = this._source ? this._source.size() : -1;
+		}
+		return this._sourceSize;
+	}
+
+	/**
+	 * @param {Hash} hash the hash used to track dependencies
+	 * @returns {void}
+	 */
+	updateHash(hash) {
+		hash.update(this._buildHash);
+		super.updateHash(hash);
+	}
+}
+
+module.exports = NormalModule;