Initial commit

.editorconfig

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+# http://editorconfig.org
+root = true
+
+[*]
+charset = utf-8
+end_of_line = lf
+indent_size = 2
+indent_style = space
+insert_final_newline = true
+max_line_length = 100
+trim_trailing_whitespace = true
+
+[*.md]
+max_line_length = 0
+trim_trailing_whitespace = false
+
+[COMMIT_EDITMSG]
+max_line_length = 0

.eslintignore

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+build

.eslintrc

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+{
+  "extends": "eslint-config-neo/config-backend",
+  "rules": {
+    "no-console": "off",
+    "import/no-extraneous-dependencies": ["error", { "devDependencies": true }]
+  }
+}

.gitignore

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+build
+node_modules
+
+*.log

.nvmrc

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+12

.prettierignore

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+build

.prettierrc

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+{
+  "printWidth": 100,
+  "singleQuote": true
+}

.yarnrc

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+save-prefix ""

LICENSE

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+MIT License
+
+Copyright (c) 2020 Ian Sutherland
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.

README.md

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+# Blarn
+
+A Yarn wrapper with extra functionality
+
+## Features
+
+- Automatically add and remove TypeScript `@types` packages when adding or removing packages in a TypeScript project
+
+## Usage
+
+### Requirements
+
+- You must have Yarn 1 installed and available on your path
+
+### Installation
+
+```sh
+// npm
+npm install -g blarn
+
+// yarn
+yarn global add blarn
+```
+
+### Upgrading
+
+```sh
+// npm
+npm install -g blarn
+
+// yarn
+yarn global upgrade blarn --latest
+```
+
+### Running Yarn commands
+
+Blarn will pass all commands and arguments through to Yarn. When adding packages in a TypeScript project it will execute a second `yarn add` command to add any available `@types` packages as dev dependencies. When removing packages any corresponding `@types` packages will be added to the list of packages to remove.
+
+### Examples
+
+#### Adding packages
+
+`blarn add yargs`
+
+If you run this command in a TypeScript project `yargs` will be installed as a dependency and `@types/yargs` will be installed as a dev dependency. If you run this command in a JavaScript project only `yargs` will be installed as a dependency.
+
+### Removing packages
+
+`blarn remove yargs`
+
+If you run this command in a TypeScript project and `@types/yargs` exists in `package.json` both `yargs` and `@types/yargs` will be removed. If you run this command in a JavaScript project only `yargs` will be removed.
+
+## Contributing
+
+### Running locally
+
+1. Fork and clone this repo
+1. Run `yarn`
+1. Run `yarn build` or `yarn watch`
+1. Run `yarn start` or `bin/blarn.js`
+
+## Acknowledgements
+
+This project was inspired by [Yarn 2](https://yarnpkg.com/) and [Bojack Horseman](https://bojackhorseman.fandom.com/wiki/Diane_Nguyen).

bin/blarn.js

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+#!/usr/bin/env node
+
+const app = require('../build').default;
+
+app();

package.json

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+{
+  "name": "blarn",
+  "description": "A Yarn wrapper with extra functionality",
+  "version": "1.0.0",
+  "author": "Ian Sutherland <ian@iansutherland.ca>",
+  "license": "MIT",
+  "repository": {
+    "type": "git",
+    "url": "https://github.com/iansu/blarn"
+  },
+  "engines": {
+    "node": ">=12.0.0"
+  },
+  "bin": {
+    "blarn": "bin/blarn.js"
+  },
+  "scripts": {
+    "start": "bin/blarn.js",
+    "build": "NODE_ENV=production ncc build src/app.ts -o build --minify",
+    "watch": "NODE_ENV=production ncc build src/app.ts -o build --minify --watch",
+    "clean": "rimraf build",
+    "lint": "eslint \"**/*.{ts,js}\"",
+    "format": "prettier --write \"**/*.{ts,js,json,yaml,yml,md}\"",
+    "format:check": "prettier --debug-check \"**/*.{ts,js,json,yaml,yml,md}\"",
+    "prepublishOnly": "rimraf build && ncc build src/app.ts -o build --minify"
+  },
+  "files": [
+    "bin",
+    "build"
+  ],
+  "keywords": [
+    "yarn",
+    "npm",
+    "typescript",
+    "cli",
+    "package manager"
+  ],
+  "husky": {
+    "hooks": {
+      "pre-commit": "lint-staged"
+    }
+  },
+  "lint-staged": {
+    "*.{ts,js}": [
+      "eslint"
+    ],
+    "*.{ts,js,json,yaml,yml,md}": [
+      "prettier --write"
+    ]
+  },
+  "dependencies": {
+    "update-notifier": "4.1.0"
+  },
+  "devDependencies": {
+    "@types/find-package-json": "1.1.1",
+    "@types/node": "13.11.0",
+    "@types/pacote": "11.1.0",
+    "@types/update-notifier": "4.1.0",
+    "@zeit/ncc": "0.22.0",
+    "chalk": "4.0.0",
+    "eslint": "6.8.0",
+    "eslint-config-neo": "0.5.2",
+    "execa": "4.0.0",
+    "find-package-json": "1.2.0",
+    "husky": "4.2.3",
+    "lint-staged": "10.1.1",
+    "pacote": "11.1.4",
+    "prettier": "1.19.1",
+    "rimraf": "3.0.2",
+    "ts-node": "8.8.1",
+    "typescript": "3.8.3"
+  }
+}

src/app.ts

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+import fs from 'fs';
+import path from 'path';
+import chalk from 'chalk';
+import execa from 'execa';
+import pacote from 'pacote';
+import findPackageJson from 'find-package-json';
+import updateNotifier from 'update-notifier';
+
+interface PackageJson {
+  name: string;
+  version: string;
+  devDependencies?: {
+    [key: string]: string;
+  };
+}
+
+const getPackageJson = (startDirectory: string): PackageJson => {
+  const finder = findPackageJson(startDirectory);
+  const results = finder.next();
+
+  if (results.filename) {
+    return { name: '', version: '1.0.0', ...results.value };
+  } else {
+    throw new Error('Unable to find package.json');
+  }
+};
+
+const printVersion = async (): Promise<void> => {
+  const packageJson = getPackageJson(__dirname);
+  const { stdout: yarnVersion } = await execa('yarn', ['--version']);
+
+  console.log(`Blarn version: ${packageJson.version}`);
+  console.log(`Yarn version: ${yarnVersion}`);
+};
+
+const isYarn1 = async (): Promise<boolean> => {
+  const { stdout } = await execa('yarn', ['--version']);
+
+  return stdout.startsWith('1.');
+};
+
+const isTypeScriptProject = (packageJson: PackageJson): boolean => {
+  if (
+    packageJson.devDependencies &&
+    Object.keys(packageJson.devDependencies).includes('typescript')
+  ) {
+    return true;
+  } else {
+    return fs.existsSync(path.join(process.cwd(), 'tsconfig.json'));
+  }
+};
+
+const runYarn = async (...args: string[]): Promise<void> => {
+  try {
+    await execa('yarn', args, { stdio: 'inherit' });
+  } catch (error) {
+    process.exit(error.exitCode);
+  }
+};
+
+const app = async (): Promise<void> => {
+  updateNotifier({ pkg: getPackageJson(__dirname) }).notify();
+
+  if (process.argv[2] === '--version' || process.argv[2] === '-v') {
+    await printVersion();
+
+    return;
+  }
+
+  if (!(await isYarn1())) {
+    console.error(`${chalk.red('error')} blarn in not compatible with Yarn 2`);
+
+    return;
+  }
+
+  const packageJson = getPackageJson(process.cwd());
+
+  if (process.argv[2] === 'remove' && isTypeScriptProject(packageJson)) {
+    const typePackages = [];
+
+    if (packageJson.devDependencies) {
+      for (const pkg of process.argv.slice(3)) {
+        if (!pkg.startsWith('-') && !pkg.startsWith('--') && !pkg.startsWith('@types')) {
+          let typePackage = `@types/${pkg}`;
+
+          if (pkg.startsWith('@')) {
+            const [org, packageName] = pkg.slice(1).split('/');
+
+            typePackage = `@types/${org}__${packageName}`;
+          }
+
+          if (Object.keys(packageJson.devDependencies).includes(typePackage)) {
+            typePackages.push(typePackage);
+          }
+        }
+      }
+    }
+
+    await runYarn('remove', ...process.argv.slice(3), ...typePackages);
+
+    return;
+  }
+
+  await runYarn(...process.argv.slice(2));
+
+  if (process.argv[2] === 'add' && isTypeScriptProject(packageJson)) {
+    const typePackages = [];
+
+    for (const pkg of process.argv.slice(3)) {
+      if (!pkg.startsWith('-') && !pkg.startsWith('--') && !pkg.startsWith('@types')) {
+        let typePackage = `@types/${pkg}`;
+
+        if (pkg.startsWith('@')) {
+          const [org, packageName] = pkg.slice(1).split('/');
+
+          typePackage = `@types/${org}__${packageName}`;
+        }
+
+        try {
+          await pacote.manifest(typePackage);
+
+          typePackages.push(typePackage);
+        } catch (error) {
+          if (error.code !== 'E404') {
+            console.error(`Error finding package: ${typePackage}`);
+          }
+        }
+      }
+    }
+
+    if (typePackages.length > 0) {
+      console.log(`\n${chalk.blue('info')} Installing types: ${typePackages.join(' ')}`);
+
+      await runYarn('add', '--dev', ...typePackages);
+    }
+  }
+};
+
+export default app;

tsconfig.json

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+{
+  "compilerOptions": {
+    "strict": true,
+    "module": "commonjs",
+    "esModuleInterop": true,
+    "allowSyntheticDefaultImports": true,
+    "resolveJsonModule": true,
+    "target": "es6",
+    "moduleResolution": "node",
+    "sourceMap": true,
+    "declaration": true,
+    "outDir": "build",
+    "baseUrl": ".",
+    "paths": {
+      "*": ["*", "node_modules/*", "src/*"]
+    }
+  },
+  "include": ["src/**/*"]
+}