chore: Eject CRA (#39264)

## Description
- Eject the application from create react app
- Remove references to craco in the scripts and package.json
dependencies
- Port craco changes to webpack configuration
- Remove SASS and SCSS loaders
- Add babel-plugin-lodash
- Remove type checks and eslint from webpack

Fixes #38903

## Automation

/ok-to-test tags="@tag.All"

### 🔍 Cypress test results
<!-- This is an auto-generated comment: Cypress test results  -->
> [!TIP]
> 🟢 🟢 🟢 All cypress tests have passed! 🎉 🎉 🎉
> Workflow run:
<https://github.com/appsmithorg/appsmith/actions/runs/13323376575>
> Commit: 8f206bd
> <a
href="https://internal.appsmith.com/app/cypress-dashboard/rundetails-65890b3c81d7400d08fa9ee5?branch=master&workflowId=13323376575&attempt=1"
target="_blank">Cypress dashboard</a>.
> Tags: `@tag.All`
> Spec:
> <hr>Fri, 14 Feb 2025 07:06:14 UTC
<!-- end of auto-generated comment: Cypress test results  -->


## Communication
Should the DevRel and Marketing teams inform users about this change?
- [ ] Yes
- [x] No


<!-- This is an auto-generated comment: release notes by coderabbit.ai
-->

## Summary by CodeRabbit

- **New Features**
- Introduced enhanced HTTPS configuration with improved security
validations.
- Improved handling of environment variables for a more robust
configuration experience.
- **Chores**
- Upgraded and streamlined the build and start processes for better
reliability and faster launches.
- Refined dependency management and optimized bundling to improve
performance.
- Modernized module resolution and asset type definitions for a more
efficient development workflow.

<!-- end of auto-generated comment: release notes by coderabbit.ai -->

app/client/.babelrc

@@ -1,5 +1,6 @@
 {
   "plugins": [
+    "babel-plugin-lodash",
     ["module-resolver", {
       "root": ["./src"],
       "alias": {

app/client/build.sh

@@ -18,6 +18,6 @@ export REACT_APP_SENTRY_RELEASE=$GIT_SHA
 export REACT_APP_CLIENT_LOG_LEVEL=ERROR
 # Disable CRA built-in ESLint checks since we have our own config and a separate step for this
 export DISABLE_ESLINT_PLUGIN=true
-craco --max-old-space-size=8192 build --config craco.build.config.js
+node --max-old-space-size=8192 scripts/build.js
 
 echo "build finished"

app/client/config/createEnvironmentHash.js

@@ -0,0 +1,9 @@
+'use strict';
+const { createHash } = require('crypto');
+
+module.exports = env => {
+  const hash = createHash('md5');
+  hash.update(JSON.stringify(env));
+
+  return hash.digest('hex');
+};

app/client/config/env.js

@@ -0,0 +1,104 @@
+"use strict";
+
+const fs = require("fs");
+const path = require("path");
+const paths = require("./paths");
+
+// Make sure that including paths.js after env.js will read .env variables.
+delete require.cache[require.resolve("./paths")];
+
+const NODE_ENV = process.env.NODE_ENV;
+if (!NODE_ENV) {
+  throw new Error(
+    "The NODE_ENV environment variable is required but was not specified.",
+  );
+}
+
+// https://github.com/bkeepers/dotenv#what-other-env-files-can-i-use
+const dotenvFiles = [
+  `${paths.dotenv}.${NODE_ENV}.local`,
+  // Don't include `.env.local` for `test` environment
+  // since normally you expect tests to produce the same
+  // results for everyone
+  NODE_ENV !== "test" && `${paths.dotenv}.local`,
+  `${paths.dotenv}.${NODE_ENV}`,
+  paths.dotenv,
+].filter(Boolean);
+
+// Load environment variables from .env* files. Suppress warnings using silent
+// if this file is missing. dotenv will never modify any environment variables
+// that have already been set.  Variable expansion is supported in .env files.
+// https://github.com/motdotla/dotenv
+// https://github.com/motdotla/dotenv-expand
+dotenvFiles.forEach((dotenvFile) => {
+  if (fs.existsSync(dotenvFile)) {
+    require("dotenv-expand")(
+      require("dotenv").config({
+        path: dotenvFile,
+      }),
+    );
+  }
+});
+
+// We support resolving modules according to `NODE_PATH`.
+// This lets you use absolute paths in imports inside large monorepos:
+// https://github.com/facebook/create-react-app/issues/253.
+// It works similar to `NODE_PATH` in Node itself:
+// https://nodejs.org/api/modules.html#modules_loading_from_the_global_folders
+// Note that unlike in Node, only *relative* paths from `NODE_PATH` are honored.
+// Otherwise, we risk importing Node.js core modules into an app instead of webpack shims.
+// https://github.com/facebook/create-react-app/issues/1023#issuecomment-265344421
+// We also resolve them to make sure all tools using them work consistently.
+const appDirectory = fs.realpathSync(process.cwd());
+process.env.NODE_PATH = (process.env.NODE_PATH || "")
+  .split(path.delimiter)
+  .filter((folder) => folder && !path.isAbsolute(folder))
+  .map((folder) => path.resolve(appDirectory, folder))
+  .join(path.delimiter);
+
+// Grab NODE_ENV and REACT_APP_* environment variables and prepare them to be
+// injected into the application via DefinePlugin in webpack configuration.
+const REACT_APP = /^REACT_APP_/i;
+
+function getClientEnvironment(publicUrl) {
+  const raw = Object.keys(process.env)
+    .filter((key) => REACT_APP.test(key))
+    .reduce(
+      (env, key) => {
+        env[key] = process.env[key];
+        return env;
+      },
+      {
+        // Useful for determining whether we’re running in production mode.
+        // Most importantly, it switches React into the correct mode.
+        NODE_ENV: process.env.NODE_ENV || "development",
+        // Useful for resolving the correct path to static assets in `public`.
+        // For example, <img src={process.env.PUBLIC_URL + '/img/logo.png'} />.
+        // This should only be used as an escape hatch. Normally you would put
+        // images into the `src` and `import` them in code to get their paths.
+        PUBLIC_URL: publicUrl,
+        // We support configuring the sockjs pathname during development.
+        // These settings let a developer run multiple simultaneous projects.
+        // They are used as the connection `hostname`, `pathname` and `port`
+        // in webpackHotDevClient. They are used as the `sockHost`, `sockPath`
+        // and `sockPort` options in webpack-dev-server.
+        WDS_SOCKET_HOST: process.env.WDS_SOCKET_HOST,
+        WDS_SOCKET_PATH: process.env.WDS_SOCKET_PATH,
+        WDS_SOCKET_PORT: process.env.WDS_SOCKET_PORT,
+        // Whether or not react-refresh is enabled.
+        // It is defined here so it is available in the webpackHotDevClient.
+        FAST_REFRESH: process.env.FAST_REFRESH !== "false",
+      },
+    );
+  // Stringify all values so we can feed into webpack DefinePlugin
+  const stringified = {
+    "process.env": Object.keys(raw).reduce((env, key) => {
+      env[key] = JSON.stringify(raw[key]);
+      return env;
+    }, {}),
+  };
+
+  return { raw, stringified };
+}
+
+module.exports = getClientEnvironment;

app/client/config/getHttpsConfig.js

@@ -0,0 +1,66 @@
+'use strict';
+
+const fs = require('fs');
+const path = require('path');
+const crypto = require('crypto');
+const chalk = require('react-dev-utils/chalk');
+const paths = require('./paths');
+
+// Ensure the certificate and key provided are valid and if not
+// throw an easy to debug error
+function validateKeyAndCerts({ cert, key, keyFile, crtFile }) {
+  let encrypted;
+  try {
+    // publicEncrypt will throw an error with an invalid cert
+    encrypted = crypto.publicEncrypt(cert, Buffer.from('test'));
+  } catch (err) {
+    throw new Error(
+      `The certificate "${chalk.yellow(crtFile)}" is invalid.\n${err.message}`
+    );
+  }
+
+  try {
+    // privateDecrypt will throw an error with an invalid key
+    crypto.privateDecrypt(key, encrypted);
+  } catch (err) {
+    throw new Error(
+      `The certificate key "${chalk.yellow(keyFile)}" is invalid.\n${
+        err.message
+      }`
+    );
+  }
+}
+
+// Read file and throw an error if it doesn't exist
+function readEnvFile(file, type) {
+  if (!fs.existsSync(file)) {
+    throw new Error(
+      `You specified ${chalk.cyan(
+        type
+      )} in your env, but the file "${chalk.yellow(file)}" can't be found.`
+    );
+  }
+  return fs.readFileSync(file);
+}
+
+// Get the https config
+// Return cert files if provided in env, otherwise just true or false
+function getHttpsConfig() {
+  const { SSL_CRT_FILE, SSL_KEY_FILE, HTTPS } = process.env;
+  const isHttps = HTTPS === 'true';
+
+  if (isHttps && SSL_CRT_FILE && SSL_KEY_FILE) {
+    const crtFile = path.resolve(paths.appPath, SSL_CRT_FILE);
+    const keyFile = path.resolve(paths.appPath, SSL_KEY_FILE);
+    const config = {
+      cert: readEnvFile(crtFile, 'SSL_CRT_FILE'),
+      key: readEnvFile(keyFile, 'SSL_KEY_FILE'),
+    };
+
+    validateKeyAndCerts({ ...config, keyFile, crtFile });
+    return config;
+  }
+  return isHttps;
+}
+
+module.exports = getHttpsConfig;

app/client/config/modules.js

@@ -0,0 +1,136 @@
+"use strict";
+
+const fs = require("fs");
+const path = require("path");
+const paths = require("./paths");
+const chalk = require("react-dev-utils/chalk");
+const resolve = require("resolve");
+
+/**
+ * Get additional module paths based on the baseUrl of a compilerOptions object.
+ *
+ * @param {Object} options
+ */
+function getAdditionalModulePaths(options = {}) {
+  const baseUrl = options.baseUrl;
+
+  if (!baseUrl) {
+    return null;
+  }
+
+  const baseUrlResolved = path.resolve(paths.appPath, baseUrl);
+
+  // We don't need to do anything if `baseUrl` is set to `node_modules`. This is
+  // the default behavior.
+  if (path.relative(paths.appNodeModules, baseUrlResolved) === "") {
+    return null;
+  }
+
+  // Allow the user set the `baseUrl` to `appSrc`.
+  if (path.relative(paths.appSrc, baseUrlResolved) === "") {
+    return [paths.appSrc];
+  }
+
+  // If the path is equal to the root directory we ignore it here.
+  // We don't want to allow importing from the root directly as source files are
+  // not transpiled outside of `src`. We do allow importing them with the
+  // absolute path (e.g. `src/Components/Button.js`) but we set that up with
+  // an alias.
+  if (path.relative(paths.appPath, baseUrlResolved) === "") {
+    return null;
+  }
+
+  // Otherwise, throw an error.
+  throw new Error(
+    chalk.red.bold(
+      "Your project's `baseUrl` can only be set to `src` or `node_modules`.",
+    ),
+  );
+}
+
+/**
+ * Get webpack aliases based on the baseUrl of a compilerOptions object.
+ *
+ * @param {*} options
+ */
+function getWebpackAliases(options = {}) {
+  const baseUrl = options.baseUrl;
+
+  if (!baseUrl) {
+    return {};
+  }
+
+  const baseUrlResolved = path.resolve(paths.appPath, baseUrl);
+
+  if (path.relative(paths.appPath, baseUrlResolved) === "") {
+    return {
+      src: paths.appSrc,
+    };
+  }
+  return {};
+}
+
+/**
+ * Get jest aliases based on the baseUrl of a compilerOptions object.
+ *
+ * @param {*} options
+ */
+function getJestAliases(options = {}) {
+  const baseUrl = options.baseUrl;
+
+  if (!baseUrl) {
+    return {};
+  }
+
+  const baseUrlResolved = path.resolve(paths.appPath, baseUrl);
+
+  if (path.relative(paths.appPath, baseUrlResolved) === "") {
+    return {
+      "^src/(.*)$": "<rootDir>/src/$1",
+    };
+  }
+}
+
+function getModules() {
+  // Check if TypeScript is setup
+  const hasTsConfig = fs.existsSync(paths.appTsConfig);
+  const hasJsConfig = fs.existsSync(paths.appJsConfig);
+
+  if (hasTsConfig && hasJsConfig) {
+    throw new Error(
+      "You have both a tsconfig.json and a jsconfig.json. If you are using TypeScript please remove your jsconfig.json file.",
+    );
+  }
+
+  let config;
+
+  // If there's a tsconfig.json we assume it's a
+  // TypeScript project and set up the config
+  // based on tsconfig.json
+  if (hasTsConfig) {
+    const ts = require(
+      resolve.sync("typescript", {
+        basedir: paths.appNodeModules,
+      }),
+    );
+    config = ts.readConfigFile(paths.appTsConfig, ts.sys.readFile).config;
+    // Otherwise we'll check if there is jsconfig.json
+    // for non TS projects.
+  } else if (hasJsConfig) {
+    config = require(paths.appJsConfig);
+  }
+
+  config = config || {};
+  const options = config.compilerOptions || {};
+
+  const additionalModulePaths = getAdditionalModulePaths(options);
+
+  return {
+    additionalModulePaths: additionalModulePaths,
+    webpackAliases: getWebpackAliases(options),
+    jestAliases: getJestAliases(options),
+    hasTsConfig,
+  };
+}
+
+module.exports = getModules();