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Defaults.unittest.js
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require("./helpers/warmup-webpack");
const path = require("path");
const jestDiff = require("jest-diff").diff;
const stripAnsi = require("strip-ansi");
/**
* Escapes regular expression metacharacters
* @param {string} str String to quote
* @returns {string} Escaped string
*/
const quotemeta = str => {
return str.replace(/[-[\]\\/{}()*+?.^$|]/g, "\\$&");
};
describe("Defaults", () => {
const cwd = process.cwd();
const cwdRegExp = new RegExp(
`${quotemeta(cwd)}((?:\\\\)?(?:[a-zA-Z.\\-_]+\\\\)*)`,
"g"
);
const escapedCwd = JSON.stringify(cwd).slice(1, -1);
const escapedCwdRegExp = new RegExp(
`${quotemeta(escapedCwd)}((?:\\\\\\\\)?(?:[a-zA-Z.\\-_]+\\\\\\\\)*)`,
"g"
);
const normalize = str => {
if (cwd.startsWith("/")) {
str = str.replace(new RegExp(quotemeta(cwd), "g"), "<cwd>");
} else {
str = str.replace(cwdRegExp, (m, g) => `<cwd>${g.replace(/\\/g, "/")}`);
str = str.replace(
escapedCwdRegExp,
(m, g) => `<cwd>${g.replace(/\\\\/g, "/")}`
);
}
str = str.replace(/@@ -\d+,\d+ \+\d+,\d+ @@/g, "@@ ... @@");
return str;
};
class Diff {
constructor(value) {
this.value = value;
}
}
expect.addSnapshotSerializer({
test(value) {
return value instanceof Diff;
},
print(received) {
return normalize(received.value);
}
});
expect.addSnapshotSerializer({
test(value) {
return typeof value === "string";
},
print(received) {
return JSON.stringify(normalize(received));
}
});
const getDefaultConfig = config => {
const { applyWebpackOptionsDefaults, getNormalizedWebpackOptions } =
require("..").config;
config = getNormalizedWebpackOptions(config);
applyWebpackOptionsDefaults(config);
process.chdir(cwd);
return config;
};
const baseConfig = getDefaultConfig({ mode: "none" });
it("should have the correct base config", () => {
expect(baseConfig).toMatchInlineSnapshot(`
Object {
"amd": undefined,
"bail": undefined,
"cache": false,
"context": "<cwd>",
"dependencies": undefined,
"devServer": undefined,
"devtool": false,
"entry": Object {
"main": Object {
"import": Array [
"./src",
],
},
},
"experiments": Object {
"asyncWebAssembly": false,
"outputModule": false,
"syncWebAssembly": false,
"topLevelAwait": false,
},
"externals": undefined,
"externalsPresets": Object {
"electron": false,
"electronMain": false,
"electronPreload": false,
"electronRenderer": false,
"node": false,
"nwjs": false,
"web": true,
},
"externalsType": "var",
"ignoreWarnings": undefined,
"infrastructureLogging": Object {},
"loader": Object {
"target": "web",
},
"mode": "none",
"module": Object {
"defaultRules": Array [
Object {
"mimetype": "application/node",
"type": "javascript/auto",
},
Object {
"test": /\\\\\\.json\\$/i,
"type": "json",
},
Object {
"mimetype": "application/json",
"type": "json",
},
Object {
"resolve": Object {
"byDependency": Object {
"esm": Object {
"fullySpecified": true,
},
},
},
"test": /\\\\\\.mjs\\$/i,
"type": "javascript/esm",
},
Object {
"descriptionData": Object {
"type": "module",
},
"resolve": Object {
"byDependency": Object {
"esm": Object {
"fullySpecified": true,
},
},
},
"test": /\\\\\\.js\\$/i,
"type": "javascript/esm",
},
Object {
"test": /\\\\\\.cjs\\$/i,
"type": "javascript/dynamic",
},
Object {
"descriptionData": Object {
"type": "commonjs",
},
"test": /\\\\\\.js\\$/i,
"type": "javascript/dynamic",
},
Object {
"mimetype": Object {
"or": Array [
"text/javascript",
"application/javascript",
],
},
"resolve": Object {
"byDependency": Object {
"esm": Object {
"fullySpecified": true,
},
},
},
"type": "javascript/esm",
},
Object {
"dependency": "url",
"oneOf": Array [
Object {
"scheme": /\\^data\\$/,
"type": "asset/inline",
},
Object {
"type": "asset/resource",
},
],
},
],
"generator": Object {},
"noParse": undefined,
"parser": Object {
"asset": Object {
"dataUrlCondition": Object {
"maxSize": 8096,
},
},
"javascript": Object {
"exprContextCritical": true,
"exprContextRecursive": true,
"exprContextRegExp": false,
"exprContextRequest": ".",
"strictExportPresence": false,
"strictThisContextOnImports": false,
"unknownContextCritical": true,
"unknownContextRecursive": true,
"unknownContextRegExp": false,
"unknownContextRequest": ".",
"wrappedContextCritical": false,
"wrappedContextRecursive": true,
"wrappedContextRegExp": /\\.\\*/,
},
},
"rules": Array [],
"unsafeCache": false,
},
"name": undefined,
"node": Object {
"__dirname": "mock",
"__filename": "mock",
"global": true,
},
"optimization": Object {
"checkWasmTypes": false,
"chunkIds": "natural",
"concatenateModules": false,
"emitOnErrors": true,
"flagIncludedChunks": false,
"innerGraph": false,
"mangleExports": false,
"mangleWasmImports": false,
"mergeDuplicateChunks": true,
"minimize": false,
"minimizer": Array [
Object {
"apply": [Function],
},
],
"moduleIds": "natural",
"nodeEnv": false,
"portableRecords": false,
"providedExports": true,
"realContentHash": false,
"removeAvailableModules": false,
"removeEmptyChunks": true,
"runtimeChunk": false,
"sideEffects": "flag",
"splitChunks": Object {
"automaticNameDelimiter": "-",
"cacheGroups": Object {
"default": Object {
"idHint": "",
"minChunks": 2,
"priority": -20,
"reuseExistingChunk": true,
},
"defaultVendors": Object {
"idHint": "vendors",
"priority": -10,
"reuseExistingChunk": true,
"test": /\\[\\\\\\\\/\\]node_modules\\[\\\\\\\\/\\]/i,
},
},
"chunks": "async",
"defaultSizeTypes": Array [
"javascript",
"unknown",
],
"enforceSizeThreshold": 30000,
"hidePathInfo": false,
"maxAsyncRequests": Infinity,
"maxInitialRequests": Infinity,
"minChunks": 1,
"minRemainingSize": undefined,
"minSize": 10000,
"usedExports": false,
},
"usedExports": false,
},
"output": Object {
"assetModuleFilename": "[hash][ext][query]",
"charset": true,
"chunkFilename": "[name].js",
"chunkFormat": "array-push",
"chunkLoadTimeout": 120000,
"chunkLoading": "jsonp",
"chunkLoadingGlobal": "webpackChunkwebpack",
"clean": undefined,
"compareBeforeEmit": true,
"crossOriginLoading": false,
"devtoolFallbackModuleFilenameTemplate": undefined,
"devtoolModuleFilenameTemplate": undefined,
"devtoolNamespace": "webpack",
"enabledChunkLoadingTypes": Array [
"jsonp",
"import-scripts",
],
"enabledLibraryTypes": Array [],
"enabledWasmLoadingTypes": Array [
"fetch",
],
"environment": Object {
"arrowFunction": true,
"bigIntLiteral": undefined,
"const": true,
"destructuring": true,
"dynamicImport": undefined,
"forOf": true,
"module": undefined,
},
"filename": "[name].js",
"globalObject": "self",
"hashDigest": "hex",
"hashDigestLength": 20,
"hashFunction": "md4",
"hashSalt": undefined,
"hotUpdateChunkFilename": "[id].[fullhash].hot-update.js",
"hotUpdateGlobal": "webpackHotUpdatewebpack",
"hotUpdateMainFilename": "[runtime].[fullhash].hot-update.json",
"iife": true,
"importFunctionName": "import",
"importMetaName": "import.meta",
"library": undefined,
"module": false,
"path": "<cwd>/dist",
"pathinfo": false,
"publicPath": "auto",
"scriptType": false,
"sourceMapFilename": "[file].map[query]",
"sourcePrefix": undefined,
"strictModuleExceptionHandling": false,
"trustedTypes": undefined,
"uniqueName": "webpack",
"wasmLoading": "fetch",
"webassemblyModuleFilename": "[hash].module.wasm",
"workerChunkLoading": "import-scripts",
"workerWasmLoading": "fetch",
},
"parallelism": 100,
"performance": false,
"plugins": Array [],
"profile": false,
"recordsInputPath": false,
"recordsOutputPath": false,
"resolve": Object {
"aliasFields": Array [],
"byDependency": Object {
"amd": Object {
"aliasFields": Array [
"browser",
],
"conditionNames": Array [
"require",
"module",
"...",
],
"extensions": Array [
".js",
".json",
".wasm",
],
"mainFields": Array [
"browser",
"module",
"...",
],
},
"commonjs": Object {
"aliasFields": Array [
"browser",
],
"conditionNames": Array [
"require",
"module",
"...",
],
"extensions": Array [
".js",
".json",
".wasm",
],
"mainFields": Array [
"browser",
"module",
"...",
],
},
"esm": Object {
"aliasFields": Array [
"browser",
],
"conditionNames": Array [
"import",
"module",
"...",
],
"extensions": Array [
".js",
".json",
".wasm",
],
"mainFields": Array [
"browser",
"module",
"...",
],
},
"loader": Object {
"aliasFields": Array [
"browser",
],
"conditionNames": Array [
"require",
"module",
"...",
],
"extensions": Array [
".js",
".json",
".wasm",
],
"mainFields": Array [
"browser",
"module",
"...",
],
},
"loaderImport": Object {
"aliasFields": Array [
"browser",
],
"conditionNames": Array [
"import",
"module",
"...",
],
"extensions": Array [
".js",
".json",
".wasm",
],
"mainFields": Array [
"browser",
"module",
"...",
],
},
"undefined": Object {
"aliasFields": Array [
"browser",
],
"conditionNames": Array [
"require",
"module",
"...",
],
"extensions": Array [
".js",
".json",
".wasm",
],
"mainFields": Array [
"browser",
"module",
"...",
],
},
"unknown": Object {
"aliasFields": Array [
"browser",
],
"conditionNames": Array [
"require",
"module",
"...",
],
"extensions": Array [
".js",
".json",
".wasm",
],
"mainFields": Array [
"browser",
"module",
"...",
],
},
"url": Object {
"preferRelative": true,
},
"wasm": Object {
"aliasFields": Array [
"browser",
],
"conditionNames": Array [
"import",
"module",
"...",
],
"extensions": Array [
".js",
".json",
".wasm",
],
"mainFields": Array [
"browser",
"module",
"...",
],
},
"worker": Object {
"aliasFields": Array [
"browser",
],
"conditionNames": Array [
"import",
"module",
"...",
],
"extensions": Array [
".js",
".json",
".wasm",
],
"mainFields": Array [
"browser",
"module",
"...",
],
"preferRelative": true,
},
},
"cache": false,
"conditionNames": Array [
"webpack",
"production",
"browser",
],
"exportsFields": Array [
"exports",
],
"extensions": Array [],
"mainFields": Array [
"main",
],
"mainFiles": Array [
"index",
],
"modules": Array [
"node_modules",
],
"roots": Array [
"<cwd>",
],
},
"resolveLoader": Object {
"cache": false,
"conditionNames": Array [
"loader",
"require",
"node",
],
"exportsFields": Array [
"exports",
],
"extensions": Array [
".js",
],
"mainFields": Array [
"loader",
"main",
],
"mainFiles": Array [
"index",
],
},
"snapshot": Object {
"buildDependencies": Object {
"hash": true,
"timestamp": true,
},
"immutablePaths": Array [],
"managedPaths": Array [
"<cwd>/node_modules",
],
"module": Object {
"timestamp": true,
},
"resolve": Object {
"timestamp": true,
},
"resolveBuildDependencies": Object {
"hash": true,
"timestamp": true,
},
},
"stats": Object {},
"target": "web",
"watch": false,
"watchOptions": Object {},
}
`);
});
const test = (name, options, fn, before, after) => {
it(`should generate the correct defaults from ${name}`, () => {
if (!("mode" in options)) options.mode = "none";
try {
if (before) before();
const result = getDefaultConfig(options);
const diff = stripAnsi(
jestDiff(baseConfig, result, { expand: false, contextLines: 0 })
);
fn(expect(new Diff(diff)), expect(result));
} finally {
if (after) after();
}
});
};
test("empty config", {}, e =>
e.toMatchInlineSnapshot(`Compared values have no visual difference.`)
);
test("none mode", { mode: "none" }, e =>
e.toMatchInlineSnapshot(`Compared values have no visual difference.`)
);
test("no mode provided", { mode: undefined }, e =>
e.toMatchInlineSnapshot(`
- Expected
+ Received
@@ ... @@
- "mode": "none",
+ "mode": undefined,
@@ ... @@
- "checkWasmTypes": false,
- "chunkIds": "natural",
- "concatenateModules": false,
- "emitOnErrors": true,
- "flagIncludedChunks": false,
- "innerGraph": false,
- "mangleExports": false,
+ "checkWasmTypes": true,
+ "chunkIds": "deterministic",
+ "concatenateModules": true,
+ "emitOnErrors": false,
+ "flagIncludedChunks": true,
+ "innerGraph": true,
+ "mangleExports": true,
@@ ... @@
- "minimize": false,
+ "minimize": true,
@@ ... @@
- "moduleIds": "natural",
- "nodeEnv": false,
+ "moduleIds": "deterministic",
+ "nodeEnv": "production",
@@ ... @@
- "realContentHash": false,
+ "realContentHash": true,
@@ ... @@
- "sideEffects": "flag",
+ "sideEffects": true,
@@ ... @@
- "enforceSizeThreshold": 30000,
- "hidePathInfo": false,
- "maxAsyncRequests": Infinity,
- "maxInitialRequests": Infinity,
+ "enforceSizeThreshold": 50000,
+ "hidePathInfo": true,
+ "maxAsyncRequests": 30,
+ "maxInitialRequests": 30,
@@ ... @@
- "minSize": 10000,
- "usedExports": false,
+ "minSize": 20000,
+ "usedExports": true,
@@ ... @@
- "usedExports": false,
+ "usedExports": true,
@@ ... @@
- "performance": false,
+ "performance": Object {
+ "hints": "warning",
+ "maxAssetSize": 250000,
+ "maxEntrypointSize": 250000,
+ },
@@ ... @@
+ "hash": true,
@@ ... @@
+ "hash": true,
`)
);
test("production", { mode: "production" }, e =>
e.toMatchInlineSnapshot(`
- Expected
+ Received
@@ ... @@
- "mode": "none",
+ "mode": "production",
@@ ... @@
- "checkWasmTypes": false,
- "chunkIds": "natural",
- "concatenateModules": false,
- "emitOnErrors": true,
- "flagIncludedChunks": false,
- "innerGraph": false,
- "mangleExports": false,
+ "checkWasmTypes": true,
+ "chunkIds": "deterministic",
+ "concatenateModules": true,
+ "emitOnErrors": false,
+ "flagIncludedChunks": true,
+ "innerGraph": true,
+ "mangleExports": true,
@@ ... @@
- "minimize": false,
+ "minimize": true,
@@ ... @@
- "moduleIds": "natural",
- "nodeEnv": false,
+ "moduleIds": "deterministic",
+ "nodeEnv": "production",
@@ ... @@
- "realContentHash": false,
+ "realContentHash": true,
@@ ... @@
- "sideEffects": "flag",
+ "sideEffects": true,
@@ ... @@
- "enforceSizeThreshold": 30000,
- "hidePathInfo": false,
- "maxAsyncRequests": Infinity,
- "maxInitialRequests": Infinity,
+ "enforceSizeThreshold": 50000,
+ "hidePathInfo": true,
+ "maxAsyncRequests": 30,
+ "maxInitialRequests": 30,
@@ ... @@
- "minSize": 10000,
- "usedExports": false,
+ "minSize": 20000,
+ "usedExports": true,
@@ ... @@
- "usedExports": false,
+ "usedExports": true,
@@ ... @@
- "performance": false,
+ "performance": Object {
+ "hints": "warning",
+ "maxAssetSize": 250000,
+ "maxEntrypointSize": 250000,
+ },
@@ ... @@
+ "hash": true,
@@ ... @@
+ "hash": true,
`)
);
test("development", { mode: "development" }, e =>
e.toMatchInlineSnapshot(`
- Expected
+ Received
@@ ... @@
- "cache": false,
+ "cache": Object {
+ "maxGenerations": Infinity,
+ "type": "memory",
+ },
@@ ... @@
- "devtool": false,
+ "devtool": "eval",
@@ ... @@
- "mode": "none",
+ "mode": "development",
@@ ... @@
- "unsafeCache": false,
+ "unsafeCache": [Function anonymous],
@@ ... @@
- "chunkIds": "natural",
+ "chunkIds": "named",
@@ ... @@
- "moduleIds": "natural",
- "nodeEnv": false,
+ "moduleIds": "named",
+ "nodeEnv": "development",
@@ ... @@
- "minRemainingSize": undefined,
+ "minRemainingSize": 0,
@@ ... @@
- "pathinfo": false,
+ "pathinfo": true,
@@ ... @@
- "cache": false,
+ "cache": true,
@@ ... @@
- "production",
+ "development",
@@ ... @@
- "cache": false,
+ "cache": true,
`)
);
test("sync wasm", { experiments: { syncWebAssembly: true } }, e =>
e.toMatchInlineSnapshot(`
- Expected
+ Received
@@ ... @@
- "syncWebAssembly": false,
+ "syncWebAssembly": true,
@@ ... @@
+ },
+ ],
+ },
+ Object {
+ "rules": Array [
+ Object {
+ "descriptionData": Object {
+ "type": "module",
+ },
+ "resolve": Object {
+ "fullySpecified": true,
+ },
+ },
+ ],
+ "test": /\\.wasm$/i,
+ "type": "webassembly/sync",
+ },
+ Object {
+ "mimetype": "application/wasm",
+ "rules": Array [
+ Object {
+ "descriptionData": Object {
+ "type": "module",
+ },
+ "resolve": Object {
+ "fullySpecified": true,
@@ ... @@
+ },
@@ ... @@
+ "type": "webassembly/sync",
`)
);
test("output module", { experiments: { outputModule: true } }, e =>
e.toMatchInlineSnapshot(`
- Expected
+ Received
@@ ... @@
- "outputModule": false,
+ "outputModule": true,
@@ ... @@
- "externalsType": "var",
+ "externalsType": "module",
@@ ... @@
- "chunkFilename": "[name].js",
+ "chunkFilename": "[name].mjs",
@@ ... @@
- "filename": "[name].js",
+ "filename": "[name].mjs",
@@ ... @@
- "hotUpdateChunkFilename": "[id].[fullhash].hot-update.js",
+ "hotUpdateChunkFilename": "[id].[fullhash].hot-update.mjs",
@@ ... @@
- "iife": true,
+ "iife": false,
@@ ... @@
- "module": false,
+ "module": true,
@@ ... @@
- "scriptType": false,
+ "scriptType": "module",
`)
);
test("async wasm", { experiments: { asyncWebAssembly: true } }, e =>
e.toMatchInlineSnapshot(`
- Expected
+ Received
@@ ... @@
- "asyncWebAssembly": false,
+ "asyncWebAssembly": true,
@@ ... @@
+ },
+ ],
+ },
+ Object {
+ "rules": Array [
+ Object {
+ "descriptionData": Object {
+ "type": "module",
+ },
+ "resolve": Object {
+ "fullySpecified": true,
+ },
+ },
+ ],
+ "test": /\\.wasm$/i,
+ "type": "webassembly/async",
+ },
+ Object {
+ "mimetype": "application/wasm",
+ "rules": Array [
+ Object {
+ "descriptionData": Object {
+ "type": "module",
+ },
+ "resolve": Object {
+ "fullySpecified": true,
@@ ... @@
+ },
@@ ... @@
+ "type": "webassembly/async",
`)
);
test(
"both wasm",
{ experiments: { syncWebAssembly: true, asyncWebAssembly: true } },
e =>
e.toMatchInlineSnapshot(`
- Expected
+ Received
@@ ... @@
- "asyncWebAssembly": false,
+ "asyncWebAssembly": true,
@@ ... @@
- "syncWebAssembly": false,
+ "syncWebAssembly": true,
@@ ... @@
+ },
+ ],
+ },
+ Object {
+ "rules": Array [
+ Object {
+ "descriptionData": Object {
+ "type": "module",
+ },
+ "resolve": Object {
+ "fullySpecified": true,
+ },
+ },
+ ],
+ "test": /\\.wasm$/i,
+ "type": "webassembly/async",
@@ ... @@
+ Object {
+ "mimetype": "application/wasm",
+ "rules": Array [
+ Object {
+ "descriptionData": Object {
+ "type": "module",
+ },
+ "resolve": Object {
+ "fullySpecified": true,
+ },
+ },
@@ ... @@
+ "type": "webassembly/async",
`)
);
test("const filename", { output: { filename: "bundle.js" } }, e =>
e.toMatchInlineSnapshot(`
- Expected
+ Received
@@ ... @@
- "chunkFilename": "[name].js",
+ "chunkFilename": "[id].bundle.js",
@@ ... @@
- "filename": "[name].js",
+ "filename": "bundle.js",
`)
);
test("function filename", { output: { filename: () => "bundle.js" } }, e =>
e.toMatchInlineSnapshot(`
- Expected
+ Received
@@ ... @@
- "chunkFilename": "[name].js",
+ "chunkFilename": "[id].js",
@@ ... @@
- "filename": "[name].js",
+ "filename": [Function filename],
`)
);
test("library", { output: { library: ["myLib", "awesome"] } }, e =>
e.toMatchInlineSnapshot(`