Remove lodash deps

Gulpfile.mjs

@@ -8,7 +8,6 @@ import through from "through2";
 import chalk from "chalk";
 import newer from "gulp-newer";
 import babel from "gulp-babel";
-import camelCase from "lodash/camelCase.js";
 import fancyLog from "fancy-log";
 import filter from "gulp-filter";
 import revertPath from "gulp-revert-path";
@@ -162,7 +161,9 @@ function generateStandalone() {
         let allList = "";
 
         for (const plugin of pluginConfig) {
-          const camelPlugin = camelCase(plugin);
+          const camelPlugin = plugin.replace(/-[a-z]/g, c =>
+            c[1].toUpperCase()
+          );
           imports += `import ${camelPlugin} from "@babel/plugin-${plugin}";`;
           list += `${camelPlugin},`;
           allList += `"${plugin}": ${camelPlugin},`;

lib/third-party-libs.js.flow

@@ -22,18 +22,6 @@ declare module "json5" {
   };
 }
 
-declare module "lodash/clone" {
-  declare export default <T>(obj: T) => T;
-}
-
-declare module "lodash/merge" {
-  declare export default <T: Object>(T, Object) => T;
-}
-
-declare module "lodash/escapeRegExp" {
-  declare export default (toEscape?: string) => string;
-}
-
 declare module "semver" {
   declare class SemVer {
     build: Array<string>;

packages/babel-cli/test/index.js

@@ -3,8 +3,6 @@ import * as helper from "@babel/helper-fixtures";
 import rimraf from "rimraf";
 import { sync as makeDirSync } from "make-dir";
 import child from "child_process";
-import escapeRegExp from "lodash/escapeRegExp";
-import merge from "lodash/merge";
 import path from "path";
 import fs from "fs";
 import { fileURLToPath } from "url";
@@ -58,6 +56,10 @@ const saveInFiles = function (files) {
   });
 };
 
+function escapeRegExp(string) {
+  return string.replace(/[|\\{}()[\]^$+*?.]/g, "\\$&");
+}
+
 const normalizeOutput = function (str, cwd) {
   let result = str
     .replace(/\(\d+ms\)/g, "(123ms)")
@@ -218,7 +220,7 @@ fs.readdirSync(fixtureLoc).forEach(function (binName) {
 
       const testLoc = path.join(suiteLoc, testName);
 
-      const opts = {
+      let opts = {
         args: [],
       };
 
@@ -244,7 +246,7 @@ fs.readdirSync(fixtureLoc).forEach(function (binName) {
 
           delete taskOpts.os;
         }
-        merge(opts, taskOpts);
+        opts = { args: [], ...taskOpts };
       }
 
       ["stdout", "stdin", "stderr"].forEach(function (key) {

packages/babel-core/package.json

@@ -58,10 +58,8 @@
     "@babel/types": "workspace:^7.13.0",
     "convert-source-map": "^1.7.0",
     "debug": "^4.1.0",
-    "escape-string-regexp": "condition:BABEL_8_BREAKING ? ^4.0.0 : ",
     "gensync": "^1.0.0-beta.2",
     "json5": "^2.1.2",
-    "lodash": "^4.17.19",
     "semver": "condition:BABEL_8_BREAKING ? ^7.3.4 : ^6.3.0",
     "source-map": "^0.5.0"
   },

packages/babel-core/src/config/pattern-to-regex.js

@@ -1,9 +1,6 @@
 // @flow
 import path from "path";
 
-// $FlowIgnore
-import escapeRegExp from "./helpers/escape-regexp.cjs";
-
 const sep = `\\${path.sep}`;
 const endSep = `(?:${sep}|$)`;
 
@@ -15,6 +12,10 @@ const starPatLast = `(?:${substitution}${endSep})`;
 const starStarPat = `${starPat}*?`;
 const starStarPatLast = `${starPat}*?${starPatLast}?`;
 
+function escapeRegExp(string) {
+  return string.replace(/[|\\{}()[\]^$+*?.]/g, "\\$&");
+}
+
 /**
  * Implement basic pattern matching that will allow users to do the simple
  * tests with * and **. If users want full complex pattern matching, then can

packages/babel-core/test/config-chain.js

@@ -2,7 +2,6 @@ import fs from "fs";
 import os from "os";
 import path from "path";
 import { fileURLToPath } from "url";
-import escapeRegExp from "lodash/escapeRegExp";
 import * as babel from "../lib";
 import getTargets from "@babel/helper-compilation-targets";
 
@@ -63,6 +62,10 @@ function pairs(items) {
   return pairs;
 }
 
+function escapeRegExp(string) {
+  return string.replace(/[|\\{}()[\]^$+*?.]/g, "\\$&");
+}
+
 async function getTemp(name) {
   const cwd = await pfs.mkdtemp(os.tmpdir() + path.sep + name);
   const tmp = name => path.join(cwd, name);

packages/babel-helper-transform-fixture-test-runner/package.json

@@ -19,8 +19,6 @@
     "@babel/core": "workspace:^7.13.10",
     "@babel/helper-fixtures": "workspace:^7.13.10",
     "babel-check-duplicated-nodes": "^1.0.0",
-    "escape-string-regexp": "condition:BABEL_8_BREAKING ? ^4.0.0 : ",
-    "lodash": "^4.17.19",
     "quick-lru": "5.1.0",
     "regenerator-runtime": "^0.13.7",
     "source-map": "^0.5.0"

packages/babel-helper-transform-fixture-test-runner/src/index.ts

@@ -8,14 +8,11 @@ import {
 import sourceMap from "source-map";
 import { codeFrameColumns } from "@babel/code-frame";
 import * as helpers from "./helpers";
-import merge from "lodash/merge";
 import assert from "assert";
 import fs from "fs";
 import path from "path";
 import vm from "vm";
 import QuickLRU from "quick-lru";
-// @ts-ignore
-import escapeRegExp from "./escape-regexp.cjs";
 import { fileURLToPath } from "url";
 
 import { createRequire } from "module";
@@ -202,19 +199,17 @@ function run(task) {
 
   // todo(flow->ts) add proper return type (added any, because empty object is inferred)
   function getOpts(self): any {
-    const newOpts = merge(
-      {
-        ast: true,
-        cwd: path.dirname(self.loc),
-        filename: self.loc,
-        filenameRelative: self.filename,
-        sourceFileName: self.filename,
-        sourceType: "script",
-        babelrc: false,
-        inputSourceMap: task.inputSourceMap || undefined,
-      },
-      opts,
-    );
+    const newOpts = {
+      ast: true,
+      cwd: path.dirname(self.loc),
+      filename: self.loc,
+      filenameRelative: self.filename,
+      sourceFileName: self.filename,
+      sourceType: "script",
+      babelrc: false,
+      inputSourceMap: task.inputSourceMap || undefined,
+      ...opts,
+    };
 
     return resolveOptionPluginOrPreset(newOpts, optionsDir);
   }
@@ -345,6 +340,10 @@ function validateFile(actualCode, expectedLoc, expectedCode) {
   }
 }
 
+function escapeRegExp(string) {
+  return string.replace(/[|\\{}()[\]^$+*?.]/g, "\\$&");
+}
+
 function normalizeOutput(code, normalizePathSeparator?) {
   const projectRoot = path.resolve(
     path.dirname(fileURLToPath(import.meta.url)),

packages/babel-register/package.json

@@ -17,7 +17,6 @@
     "./lib/nodeWrapper.js": "./lib/browser.js"
   },
   "dependencies": {
-    "escape-string-regexp": "condition:BABEL_8_BREAKING ? ^4.0.0 : ",
     "find-cache-dir": "condition:BABEL_8_BREAKING ? ^3.3.1 : ^2.0.0",
     "lodash": "^4.17.19",
     "make-dir": "^2.1.0",

packages/babel-register/src/node.js

@@ -7,7 +7,6 @@ import { addHook } from "pirates";
 import fs from "fs";
 import path from "path";
 import Module from "module";
-import escapeRegExp from "./escape-regexp.cjs";
 
 const maps = {};
 let transformOpts = {};
@@ -109,6 +108,10 @@ export function revert() {
   if (piratesRevert) piratesRevert();
 }
 
+function escapeRegExp(string) {
+  return string.replace(/[|\\{}()[\]^$+*?.]/g, "\\$&");
+}
+
 export default function register(opts?: Object = {}) {
   // Clone to avoid mutating the arguments object with the 'delete's below.
   opts = {

packages/babel-types/src/builders/builder.ts

@@ -1,4 +1,3 @@
-import loClone from "lodash/clone";
 import { NODE_FIELDS, BUILDER_KEYS } from "../definitions";
 import validate from "../validators/validate";
 import type * as t from "..";
@@ -23,7 +22,9 @@ export default function builder<T extends t.Node>(
 
     let arg;
     if (i < countArgs) arg = args[i];
-    if (arg === undefined) arg = loClone(field.default);
+    if (arg === undefined) {
+      arg = Array.isArray(field.default) ? [] : field.default;
+    }
 
     node[key] = arg;
     i++;

packages/babel-types/src/converters/valueToNode.ts

@@ -1,5 +1,4 @@
 import isPlainObject from "lodash/isPlainObject";
-import isRegExp from "lodash/isRegExp";
 import isValidIdentifier from "../validators/isValidIdentifier";
 import {
   identifier,
@@ -33,6 +32,10 @@ export default valueToNode as {
   (value: unknown): t.Expression;
 };
 
+function isRegExp(value): value is RegExp {
+  return Object.prototype.toString.call(value) === "[object RegExp]";
+}
+
 function valueToNode(value: unknown): t.Expression {
   // undefined
   if (value === undefined) {

packages/babel-types/src/definitions/utils.ts

@@ -279,8 +279,16 @@ export default function defineType(
       const keys = Object.getOwnPropertyNames(inherits.fields);
       for (const key of keys) {
         const field = inherits.fields[key];
+        const def = field.default;
+        if (
+          Array.isArray(def) ? def.length > 0 : def && typeof def === "object"
+        ) {
+          throw new Error(
+            "field defaults can only be primitives or empty arrays currently",
+          );
+        }
         fields[key] = {
-          default: field.default,
+          default: Array.isArray(def) ? [] : def,
           optional: field.optional,
           validate: field.validate,
         };

yarn.lock

@@ -213,10 +213,8 @@ __metadata:
     "@babel/types": "workspace:^7.13.0"
     convert-source-map: ^1.7.0
     debug: ^4.1.0
-    escape-string-regexp: "condition:BABEL_8_BREAKING ? ^4.0.0 : "
     gensync: ^1.0.0-beta.2
     json5: ^2.1.2
-    lodash: ^4.17.19
     semver: "condition:BABEL_8_BREAKING ? ^7.3.4 : ^6.3.0"
     source-map: ^0.5.0
   languageName: unknown
@@ -820,8 +818,6 @@ __metadata:
     "@babel/helper-fixtures": "workspace:^7.13.10"
     "@types/jest": ^25.2.2
     babel-check-duplicated-nodes: ^1.0.0
-    escape-string-regexp: "condition:BABEL_8_BREAKING ? ^4.0.0 : "
-    lodash: ^4.17.19
     quick-lru: 5.1.0
     regenerator-runtime: ^0.13.7
     source-map: ^0.5.0
@@ -3256,7 +3252,6 @@ __metadata:
     "@babel/core": "workspace:*"
     "@babel/plugin-transform-modules-commonjs": "workspace:*"
     browserify: ^16.5.2
-    escape-string-regexp: "condition:BABEL_8_BREAKING ? ^4.0.0 : "
     find-cache-dir: "condition:BABEL_8_BREAKING ? ^3.3.1 : ^2.0.0"
     lodash: ^4.17.19
     make-dir: ^2.1.0
@@ -7428,22 +7423,6 @@ __metadata:
   languageName: node
   linkType: hard
 
-"escape-string-regexp-BABEL_8_BREAKING-true@npm:escape-string-regexp@^4.0.0":
-  version: 4.0.0
-  resolution: "escape-string-regexp@npm:4.0.0"
-  checksum: c747be8d5ff7873127e3e0cffe7d2206a37208077fa9c30a3c1bb4f26bebd081c8c24d5fba7a99449f9d20670bea3dc5e1b6098b0f074b099bd38766271a272f
-  languageName: node
-  linkType: hard
-
-"escape-string-regexp@condition:BABEL_8_BREAKING ? ^4.0.0 : ":
-  version: 0.0.0-condition-d458a5
-  resolution: "escape-string-regexp@condition:BABEL_8_BREAKING?^4.0.0:#d458a5"
-  dependencies:
-    escape-string-regexp-BABEL_8_BREAKING-true: "npm:escape-string-regexp@^4.0.0"
-  checksum: a67cb3a0fc219d92f2c6f0964e302cc079b0ce38bf2bd19257d26865c600bec42befed4dc88aec2bfbe9e62f757ce4bec80a408937bf48c5c779e13d9b238c01
-  languageName: node
-  linkType: hard
-
 "escape-string-regexp@npm:^1.0.2, escape-string-regexp@npm:^1.0.5":
   version: 1.0.5
   resolution: "escape-string-regexp@npm:1.0.5"