Get rid typeof undef in all lib

lib/CompatibilityPlugin.js

@@ -30,7 +30,7 @@ class CompatibilityPlugin {
 					.for("javascript/auto")
 					.tap("CompatibilityPlugin", (parser, parserOptions) => {
 						if (
-							typeof parserOptions.browserify !== "undefined" &&
+							parserOptions.browserify !== undefined &&
 							!parserOptions.browserify
 						)
 							return;

lib/EnvironmentPlugin.js

@@ -60,7 +60,7 @@ class EnvironmentPlugin {
 			}
 
 			defs[`process.env.${key}`] =
-				typeof value === "undefined" ? "undefined" : JSON.stringify(value);
+				value === undefined ? "undefined" : JSON.stringify(value);
 
 			return defs;
 		}, {});

lib/ExternalModuleFactoryPlugin.js

@@ -27,7 +27,7 @@ class ExternalModuleFactoryPlugin {
 					}
 					if (value === false) return factory(data, callback);
 					if (value === true) value = dependency.request;
-					if (typeof type === "undefined" && /^[a-z0-9]+ /.test(value)) {
+					if (type === undefined && /^[a-z0-9]+ /.test(value)) {
 						const idx = value.indexOf(" ");
 						type = value.substr(0, idx);
 						value = value.substr(idx + 1);
@@ -81,7 +81,7 @@ class ExternalModuleFactoryPlugin {
 							dependency.request,
 							(err, value, type) => {
 								if (err) return callback(err);
-								if (typeof value !== "undefined") {
+								if (value !== undefined) {
 									handleExternal(value, type, callback);
 								} else {
 									callback();

lib/HotModuleReplacement.runtime.js

@@ -105,7 +105,7 @@ module.exports = function() {
 			// Module API
 			active: true,
 			accept: function(dep, callback) {
-				if (typeof dep === "undefined") hot._selfAccepted = true;
+				if (dep === undefined) hot._selfAccepted = true;
 				else if (typeof dep === "function") hot._selfAccepted = dep;
 				else if (typeof dep === "object")
 					for (var i = 0; i < dep.length; i++)
@@ -113,7 +113,7 @@ module.exports = function() {
 				else hot._acceptedDependencies[dep] = callback || function() {};
 			},
 			decline: function(dep) {
-				if (typeof dep === "undefined") hot._selfDeclined = true;
+				if (dep === undefined) hot._selfDeclined = true;
 				else if (typeof dep === "object")
 					for (var i = 0; i < dep.length; i++)
 						hot._declinedDependencies[dep[i]] = true;

lib/LibraryTemplatePlugin.js

@@ -30,7 +30,7 @@ const accessorAccess = (base, accessor, joinWith = "; ") => {
 				? base + accessorToObjectAccess(accessors.slice(0, idx + 1))
 				: accessors[0] + accessorToObjectAccess(accessors.slice(1, idx + 1));
 			if (idx === accessors.length - 1) return a;
-			if (idx === 0 && typeof base === "undefined") {
+			if (idx === 0 && base === undefined) {
 				return `${a} = typeof ${a} === "object" ? ${a} : {}`;
 			}
 			return `${a} = ${a} || {}`;

lib/MultiStats.js

@@ -40,11 +40,11 @@ class MultiStats {
 			return obj;
 		});
 		const showVersion =
-			typeof options.version === "undefined"
+			options.version === undefined
 				? jsons.every(j => j.version)
 				: options.version !== false;
 		const showHash =
-			typeof options.hash === "undefined"
+			options.hash === undefined
 				? jsons.every(j => j.hash)
 				: options.hash !== false;
 		if (showVersion) {

lib/OptionsDefaulter.js

@@ -16,8 +16,7 @@ const getProperty = (obj, name) => {
 const setProperty = (obj, name, value) => {
 	name = name.split(".");
 	for (let i = 0; i < name.length - 1; i++) {
-		if (typeof obj[name[i]] !== "object" && typeof obj[name[i]] !== "undefined")
+		if (typeof obj[name[i]] !== "object" && obj[name[i]] !== undefined) return;
-			return;
 		if (Array.isArray(obj[name[i]])) return;
 		if (!obj[name[i]]) obj[name[i]] = {};
 		obj = obj[name[i]];

lib/RequireJsStuffPlugin.js

@@ -19,10 +19,7 @@ module.exports = class RequireJsStuffPlugin {
 					new ConstDependency.Template()
 				);
 				const handler = (parser, parserOptions) => {
-					if (
+					if (parserOptions.requireJs !== undefined && !parserOptions.requireJs)
-						typeof parserOptions.requireJs !== "undefined" &&
-						!parserOptions.requireJs
-					)
 						return;
 
 					parser.hooks.call

lib/Stats.js

@@ -13,7 +13,7 @@ const compareLocations = require("./compareLocations");
 const optionsOrFallback = (...args) => {
 	let optionValues = [];
 	optionValues.push(...args);
-	return optionValues.find(optionValue => typeof optionValue !== "undefined");
+	return optionValues.find(optionValue => optionValue !== undefined);
 };
 
 const compareId = (a, b) => {
@@ -105,11 +105,7 @@ class Stats {
 		}
 
 		const optionOrLocalFallback = (v, def) =>
-			typeof v !== "undefined"
+			v !== undefined ? v : options.all !== undefined ? options.all : def;
-				? v
-				: typeof options.all !== "undefined"
-					? options.all
-					: def;
 
 		const testAgainstGivenOption = item => {
 			if (typeof item === "string") {

lib/UmdMainTemplatePlugin.js

@@ -31,7 +31,7 @@ const accessorAccess = (base, accessor, joinWith = ", ") => {
 				? base + accessorToObjectAccess(accessors.slice(0, idx + 1))
 				: accessors[0] + accessorToObjectAccess(accessors.slice(1, idx + 1));
 			if (idx === accessors.length - 1) return a;
-			if (idx === 0 && typeof base === "undefined")
+			if (idx === 0 && base === undefined)
 				return `${a} = typeof ${a} === "object" ? ${a} : {}`;
 			return `${a} = ${a} || {}`;
 		})
@@ -147,7 +147,7 @@ class UmdMainTemplatePlugin {
 							if (typeof request === "object") {
 								request = request[type];
 							}
-							if (typeof request === "undefined") {
+							if (request === undefined) {
 								throw new Error(
 									"Missing external configuration for type:" + type
 								);

lib/dependencies/AMDPlugin.js

@@ -98,8 +98,7 @@ class AMDPlugin {
 				);
 
 				const handler = (parser, parserOptions) => {
-					if (typeof parserOptions.amd !== "undefined" && !parserOptions.amd)
+					if (parserOptions.amd !== undefined && !parserOptions.amd) return;
-						return;
 
 					const setExpressionToModule = (outerExpr, module) => {
 						parser.hooks.expression.for(outerExpr).tap("AMDPlugin", expr => {

lib/dependencies/CommonJsPlugin.js

@@ -83,10 +83,7 @@ class CommonJsPlugin {
 				);
 
 				const handler = (parser, parserOptions) => {
-					if (
+					if (parserOptions.commonjs !== undefined && !parserOptions.commonjs)
-						typeof parserOptions.commonjs !== "undefined" &&
-						!parserOptions.commonjs
-					)
 						return;
 
 					const requireExpressions = [

lib/dependencies/HarmonyModulesPlugin.js

@@ -121,10 +121,7 @@ class HarmonyModulesPlugin {
 				);
 
 				const handler = (parser, parserOptions) => {
-					if (
+					if (parserOptions.harmony !== undefined && !parserOptions.harmony)
-						typeof parserOptions.harmony !== "undefined" &&
-						!parserOptions.harmony
-					)
 						return;
 
 					new HarmonyDetectionParserPlugin().apply(parser);

lib/dependencies/ImportParserPlugin.js

@@ -54,7 +54,7 @@ class ImportParserPlugin {
 			}
 
 			if (importOptions) {
-				if (typeof importOptions.webpackIgnore !== "undefined") {
+				if (importOptions.webpackIgnore !== undefined) {
 					if (typeof importOptions.webpackIgnore !== "boolean") {
 						parser.state.module.warnings.push(
 							new UnsupportedFeatureWarning(
@@ -72,7 +72,7 @@ class ImportParserPlugin {
 						}
 					}
 				}
-				if (typeof importOptions.webpackChunkName !== "undefined") {
+				if (importOptions.webpackChunkName !== undefined) {
 					if (typeof importOptions.webpackChunkName !== "string") {
 						parser.state.module.warnings.push(
 							new UnsupportedFeatureWarning(
@@ -87,7 +87,7 @@ class ImportParserPlugin {
 						chunkName = importOptions.webpackChunkName;
 					}
 				}
-				if (typeof importOptions.webpackMode !== "undefined") {
+				if (importOptions.webpackMode !== undefined) {
 					if (typeof importOptions.webpackMode !== "string") {
 						parser.state.module.warnings.push(
 							new UnsupportedFeatureWarning(
@@ -102,7 +102,7 @@ class ImportParserPlugin {
 						mode = importOptions.webpackMode;
 					}
 				}
-				if (typeof importOptions.webpackPrefetch !== "undefined") {
+				if (importOptions.webpackPrefetch !== undefined) {
 					if (importOptions.webpackPrefetch === true) {
 						groupOptions.prefetchOrder = 0;
 					} else if (typeof importOptions.webpackPrefetch === "number") {
@@ -119,7 +119,7 @@ class ImportParserPlugin {
 						);
 					}
 				}
-				if (typeof importOptions.webpackPreload !== "undefined") {
+				if (importOptions.webpackPreload !== undefined) {
 					if (importOptions.webpackPreload === true) {
 						groupOptions.preloadOrder = 0;
 					} else if (typeof importOptions.webpackPreload === "number") {
@@ -136,7 +136,7 @@ class ImportParserPlugin {
 						);
 					}
 				}
-				if (typeof importOptions.webpackInclude !== "undefined") {
+				if (importOptions.webpackInclude !== undefined) {
 					if (
 						!importOptions.webpackInclude ||
 						importOptions.webpackInclude.constructor.name !== "RegExp"
@@ -154,7 +154,7 @@ class ImportParserPlugin {
 						include = new RegExp(importOptions.webpackInclude);
 					}
 				}
-				if (typeof importOptions.webpackExclude !== "undefined") {
+				if (importOptions.webpackExclude !== undefined) {
 					if (
 						!importOptions.webpackExclude ||
 						importOptions.webpackExclude.constructor.name !== "RegExp"

lib/dependencies/ImportPlugin.js

@@ -57,10 +57,7 @@ class ImportPlugin {
 				);
 
 				const handler = (parser, parserOptions) => {
-					if (
+					if (parserOptions.import !== undefined && !parserOptions.import)
-						typeof parserOptions.import !== "undefined" &&
-						!parserOptions.import
-					)
 						return;
 
 					new ImportParserPlugin(options).apply(parser);

lib/dependencies/RequireContextPlugin.js

@@ -42,7 +42,7 @@ class RequireContextPlugin {
 
 				const handler = (parser, parserOptions) => {
 					if (
-						typeof parserOptions.requireContext !== "undefined" &&
+						parserOptions.requireContext !== undefined &&
 						!parserOptions.requireContext
 					)
 						return;

lib/dependencies/RequireEnsurePlugin.js

@@ -38,7 +38,7 @@ class RequireEnsurePlugin {
 
 				const handler = (parser, parserOptions) => {
 					if (
-						typeof parserOptions.requireEnsure !== "undefined" &&
+						parserOptions.requireEnsure !== undefined &&
 						!parserOptions.requireEnsure
 					)
 						return;

lib/dependencies/RequireIncludePlugin.js

@@ -25,7 +25,7 @@ class RequireIncludePlugin {
 
 				const handler = (parser, parserOptions) => {
 					if (
-						typeof parserOptions.requireInclude !== "undefined" &&
+						parserOptions.requireInclude !== undefined &&
 						!parserOptions.requireInclude
 					)
 						return;

lib/dependencies/SystemPlugin.js

@@ -17,13 +17,10 @@ class SystemPlugin {
 			"SystemPlugin",
 			(compilation, { normalModuleFactory }) => {
 				const handler = (parser, parserOptions) => {
-					if (
+					if (parserOptions.system !== undefined && !parserOptions.system)
-						typeof parserOptions.system !== "undefined" &&
-						!parserOptions.system
-					)
 						return;
 
-					const shouldWarn = typeof parserOptions.system === "undefined";
+					const shouldWarn = parserOptions.system === undefined;
 
 					const setNotSupported = name => {
 						parser.hooks.evaluateTypeof

lib/optimize/ConcatenatedModule.js

@@ -267,7 +267,7 @@ const getPathInAst = (ast, node) => {
 	if (Array.isArray(ast)) {
 		for (i = 0; i < ast.length; i++) {
 			const enterResult = enterNode(ast[i]);
-			if (typeof enterResult !== "undefined") return enterResult;
+			if (enterResult !== undefined) return enterResult;
 		}
 	} else if (ast && typeof ast === "object") {
 		const keys = Object.keys(ast);
@@ -275,10 +275,10 @@ const getPathInAst = (ast, node) => {
 			const value = ast[keys[i]];
 			if (Array.isArray(value)) {
 				const pathResult = getPathInAst(value, node);
-				if (typeof pathResult !== "undefined") return pathResult;
+				if (pathResult !== undefined) return pathResult;
 			} else if (value && typeof value === "object") {
 				const enterResult = enterNode(value);
-				if (typeof enterResult !== "undefined") return enterResult;
+				if (enterResult !== undefined) return enterResult;
 			}
 		}
 	}

lib/util/identifier.js

@@ -60,13 +60,13 @@ exports.makePathsRelative = (context, identifier, cache) => {
 
 	let cachedResult;
 	let contextCache = relativePaths.get(context);
-	if (typeof contextCache === "undefined") {
+	if (contextCache === undefined) {
 		relativePaths.set(context, (contextCache = new Map()));
 	} else {
 		cachedResult = contextCache.get(identifier);
 	}
 
-	if (typeof cachedResult !== "undefined") {
+	if (cachedResult !== undefined) {
 		return cachedResult;
 	} else {
 		const relativePath = _makePathsRelative(context, identifier);

lib/wasm/WebAssemblyGenerator.js

@@ -114,7 +114,7 @@ const getCountImportedFunc = ast => {
 const getNextTypeIndex = ast => {
 	const typeSectionMetadata = t.getSectionMetadata(ast, "type");
 
-	if (typeof typeSectionMetadata === "undefined") {
+	if (typeSectionMetadata === undefined) {
 		return t.indexLiteral(0);
 	}
 
@@ -135,7 +135,7 @@ const getNextTypeIndex = ast => {
 const getNextFuncIndex = (ast, countImportedFunc) => {
 	const funcSectionMetadata = t.getSectionMetadata(ast, "func");
 
-	if (typeof funcSectionMetadata === "undefined") {
+	if (funcSectionMetadata === undefined) {
 		return t.indexLiteral(0 + countImportedFunc);
 	}
 
@@ -271,7 +271,7 @@ const rewriteImports = ({ ast, usedDependencyMap }) => bin => {
 				path.node.module + ":" + path.node.name
 			);
 
-			if (typeof result !== "undefined") {
+			if (result !== undefined) {
 				path.node.module = result.module;
 				path.node.name = result.name;
 			}