Remove lodash dependencies + Optimization

lib/index.js

@@ -1,6 +1,4 @@
 // @ts-check
-/** @typedef {import("lodash.defaults")} defaults */
-/** @typedef {import("lodash.assign")} assign */
 /** @typedef {import("webpack").Compiler} Compiler */
 /** @typedef {import("webpack").Stats} Stats */
 /** @typedef {import("webpack").compilation.Compilation} Compilation */
@@ -13,11 +11,6 @@ const path = require('path');
 const fs = require('fs');
 const crypto = require('crypto');
 
-const defaults = require('lodash.defaults');
-const assign = require('lodash.assign');
-const each = require('lodash.foreach');
-const fromPairs = require('lodash.frompairs');
-const toPairs = require('lodash.topairs');
 const stripAnsi = require('./utils/stripAnsi');
 
 function getAssetPath(compilation, name) {
@@ -32,16 +25,19 @@ function getSource(compilation, name) {
 /**
  * Merges the provided objects, ensuring that the resulting object has its properties in sorted order.
  * @template T
- * @param {T} obj1
- * @param {Partial<T> | undefined} obj2
- * @returns {T}
+ * @param {T} obj1 First object to merge.
+ * @param {Partial<T> | undefined} obj2 Second object to merge, can be undefined.
+ * @returns {*} A new object containing the merged properties of obj1 and obj2, with keys sorted.
  */
-function mergeObjects(obj1, obj2) {
-  const mergedObj = assign({}, obj1, obj2);
-  const sortedPairs = toPairs(mergedObj).sort((e1, e2) => e1[0].localeCompare(e2[0]));
-  // @ts-ignore: 2322 The Lodash typedefs aren't smart enough to be able to tell TS that we're
-  // regenerating the object from the original key-value pairs.
-  return fromPairs(sortedPairs);
+function mergeObjectsAndSortKeys(obj1, obj2) {
+  const mergedObj = Object.assign({}, obj1, obj2);
+
+  // Generates a new object with the same keys and values as mergedObj but in sorted order
+  const sortedKeys = Object.keys(mergedObj).sort();
+  return sortedKeys.reduce((acc, key) => {
+    acc[key] = mergedObj[key];
+    return acc;
+  }, {});
 }
 
 class BundleTrackerPlugin {
@@ -70,17 +66,21 @@ class BundleTrackerPlugin {
    * @returns this
    */
   _setParamsFromCompiler(compiler) {
-    this.options = defaults({}, this.options, {
-      path: compiler.options.output?.path ?? process.cwd(),
-      publicPath: compiler.options.output?.publicPath ?? '',
-      filename: 'webpack-stats.json',
-      logTime: false,
-      relativePath: false,
-      integrity: false,
-      indent: 2,
-      // https://www.w3.org/TR/SRI/#cryptographic-hash-functions
-      integrityHashes: ['sha256', 'sha384', 'sha512'],
-    });
+    this.options = Object.assign(
+      {},
+      {
+        path: compiler.options.output?.path ?? process.cwd(),
+        publicPath: compiler.options.output?.publicPath ?? '',
+        filename: 'webpack-stats.json',
+        logTime: false,
+        relativePath: false,
+        integrity: false,
+        indent: 2,
+        // https://www.w3.org/TR/SRI/#cryptographic-hash-functions
+        integrityHashes: ['sha256', 'sha384', 'sha512'],
+      },
+      this.options,
+    );
 
     if (this.options.filename?.includes('/')) {
       throw Error(
@@ -91,7 +91,9 @@ class BundleTrackerPlugin {
     }
 
     // Set output directories
-    this.outputChunkDir = path.resolve(compiler.options.output?.path ?? process.cwd());
+    const outputPath = compiler.options.output?.path ?? process.cwd();
+    this.outputChunkDir = path.resolve(outputPath);
+
     // @ts-ignore: TS2345 this.options.path can't be undefined here because we set a default value above
     // @ts-ignore: TS2345 this.options.filename can't be undefined here because we set a default value above
     this.outputTrackerFile = path.resolve(path.join(this.options.path, this.options.filename));
@@ -102,13 +104,13 @@ class BundleTrackerPlugin {
   /**
    * Write bundle tracker stats file
    *
-   * @param {Compiler} compiler
+   * @param {Compiler} _compiler
    * @param {Partial<Contents>} contents
    */
-  _writeOutput(compiler, contents) {
-    assign(this.contents, contents, {
-      assets: mergeObjects(this.contents.assets, contents.assets),
-      chunks: mergeObjects(this.contents.chunks, contents.chunks),
+  _writeOutput(_compiler, contents) {
+    Object.assign(this.contents, contents, {
+      assets: mergeObjectsAndSortKeys(this.contents.assets, contents.assets),
+      chunks: mergeObjectsAndSortKeys(this.contents.chunks, contents.chunks),
     });
 
     if (this.options.publicPath) {
@@ -159,7 +161,7 @@ class BundleTrackerPlugin {
       const error = findError(stats.compilation);
       this._writeOutput(compiler, {
         status: 'error',
-        error: error.name ?? 'unknown-error',
+        error: error?.name ?? 'unknown-error',
         message: stripAnsi(error['message']),
       });
 
@@ -168,7 +170,7 @@ class BundleTrackerPlugin {
 
     /** @type {Contents} */
     const output = { status: 'done', assets: {}, chunks: {} };
-    each(stats.compilation.assets, (file, assetName) => {
+    Object.entries(stats.compilation.assets).map(([assetName, _]) => {
       const fileInfo = {
         name: assetName,
         path: getAssetPath(stats.compilation, assetName),
@@ -198,7 +200,7 @@ class BundleTrackerPlugin {
 
       output.assets[assetName] = fileInfo;
     });
-    each(stats.compilation.chunkGroups, chunkGroup => {
+    stats.compilation.chunkGroups.forEach(chunkGroup => {
       if (!chunkGroup.isInitial()) return;
 
       output.chunks[chunkGroup.name] = chunkGroup.getFiles();

lib/utils/stripAnsi.js

@@ -2,7 +2,6 @@
  * This code is based on the strip-ansi library by Chalk.
  * Source: https://github.com/chalk/strip-ansi
  */
-
 function ansiRegex({ onlyFirst = false } = {}) {
   const pattern = [
     '[\\u001B\\u009B][[\\]()#;?]*(?:(?:(?:(?:;[-a-zA-Z\\d\\/#&.:=?%@~_]+)*|[a-zA-Z\\d]+(?:;[-a-zA-Z\\d\\/#&.:=?%@~_]*)*)?\\u0007)',

package.json

@@ -27,38 +27,26 @@
     "pretty": "prettier --loglevel warn --write lib/*.js tests/*.js",
     "pretty-lint": "prettier --check lib/*.js tests/*.js",
     "pretest": "npm run pretty-lint",
-    "test": "NODE_OPTIONS=--openssl-legacy-provider jest --runInBand --env node",
-    "test-debug": "NODE_OPTIONS=--openssl-legacy-provider node --inspect-brk=0.0.0.0 node_modules/jest/bin/jest --runInBand --env node",
+    "test": "cross-env NODE_OPTIONS=--openssl-legacy-provider jest --runInBand --env node",
+    "test-debug": "cross-env NODE_OPTIONS=--openssl-legacy-provider node --inspect-brk=0.0.0.0 node_modules/jest/bin/jest --runInBand --env node",
     "posttest": "tsc",
     "test-watch": "jest --runInBand --env node --watchAll",
-    "ci": "NODE_OPTIONS=--openssl-legacy-provider npm run pretest && jest --runInBand --coverage --env node && npm run posttest"
+    "ci": "cross-env NODE_OPTIONS=--openssl-legacy-provider npm run pretest && jest --runInBand --coverage --env node && npm run posttest"
   },
   "jest": {
     "setupFilesAfterEnv": [
       "jest-extended"
     ]
   },
-  "dependencies": {
-    "lodash.assign": "^4.2.0",
-    "lodash.defaults": "^4.2.0",
-    "lodash.foreach": "^4.5.0",
-    "lodash.frompairs": "^4.0.1",
-    "lodash.topairs": "^4.3.0"
-  },
   "devDependencies": {
     "@types/babel__traverse": "7.0.6",
-    "@types/lodash": "4.14.173",
-    "@types/lodash.assign": "^4.2.7",
-    "@types/lodash.defaults": "^4.2.7",
-    "@types/lodash.foreach": "^4.5.7",
-    "@types/lodash.frompairs": "^4.0.7",
-    "@types/lodash.topairs": "^4.3.7",
     "@types/node": "^13.13.52",
     "@types/webpack": "^4.41.33",
     "@typescript-eslint/eslint-plugin": "^2.34.0",
     "@typescript-eslint/parser": "^2.34.0",
     "commitizen": "^4.3.0",
     "compression-webpack-plugin": "^6.1.1",
+    "cross-env": "^7.0.3",
     "css-loader": "^5.2.7",
     "cz-conventional-changelog": "3.3.0",
     "eslint": "^6.8.0",

tests/base.test.js

@@ -2,7 +2,6 @@
 'use strict';
 
 const fs = require('fs');
-const toPairs = require('lodash.topairs');
 const zlib = require('zlib');
 const path = require('path');
 const rimraf = require('rimraf');
@@ -761,8 +760,8 @@ describe('BundleTrackerPlugin bases tests', () => {
       () => {
         const statsStr = fs.readFileSync(path.join(OUTPUT_DIR, 'webpack-stats.json'), 'utf8');
         const stats = JSON.parse(statsStr);
-        const assetsKeys = toPairs(stats.assets).map(pair => pair[0]);
-        const chunksKeys = toPairs(stats.chunks).map(pair => pair[0]);
+        const assetsKeys = Object.entries(stats.assets).map(pair => pair[0]);
+        const chunksKeys = Object.entries(stats.chunks).map(pair => pair[0]);
 
         expect(assetsKeys).toEqual(['css/appA.css', 'js/1.js', 'js/appA.js', 'js/appZ.js', 'js/commons.js']);
         expect(chunksKeys).toEqual(['appA', 'appZ']);

tests/fixtures/commons.js

@@ -1,9 +1,7 @@
 'use strict';
 
-const assign = require('lodash.assign');
-
 const output = { name: '' };
 
-assign(output, { name: 'common' });
+Object.assign(output, { name: 'common' });
 
 module.exports = output;

tests/webpack5.test.js

@@ -2,7 +2,6 @@
 'use strict';
 
 const fs = require('fs');
-const toPairs = require('lodash.topairs');
 const zlib = require('zlib');
 const path = require('path');
 const rimraf = require('rimraf');
@@ -807,8 +806,8 @@ describe('BundleTrackerPlugin bases tests', () => {
       () => {
         const statsStr = fs.readFileSync(path.join(OUTPUT_DIR, 'webpack-stats.json'), 'utf8');
         const stats = JSON.parse(statsStr);
-        const assetsKeys = toPairs(stats.assets).map(pair => pair[0]);
-        const chunksKeys = toPairs(stats.chunks).map(pair => pair[0]);
+        const assetsKeys = Object.entries(stats.assets).map(pair => pair[0]);
+        const chunksKeys = Object.entries(stats.chunks).map(pair => pair[0]);
 
         expect(assetsKeys).toEqual(['css/appA.css', 'js/75.js', 'js/appA.js', 'js/appZ.js', 'js/commons.js']);
         expect(chunksKeys).toEqual(['appA', 'appZ']);