🔨 Refactors init logic + adds an init command to the cli"

Author: danieldelcore

package.json

@@ -22,7 +22,7 @@
     "types:check": "tsc --noEmit --skipLibCheck",
     "monorepo:check": "manypkg check",
     "monorepo:fix": "manypkg fix && preconstruct fix",
-    "init:codemods": "ts-node packages/initializer/src/index.ts",
+    "init:codemods": "ts-node scripts/initialize.ts",
     "start:codemods": "node packages/cli/bin/codeshift-cli.js",
     "validate:codemods": "ts-node packages/validator/src/index.ts ./community",
     "release:codemods": "ts-node packages/publisher/src/index.ts ./community ./.tmp",

packages/cli/src/index.ts

@@ -1,6 +1,7 @@
 import chalk from 'chalk';
 import main from './main';
 import list from './list';
+import init from './init';
 import {
   ValidationError,
   NoTransformsExistError,
@@ -65,6 +66,21 @@ program
   .description('list available codemods for provided packages')
   .action(packageNames => list(packageNames));
 
+program
+  .command('init [path]')
+  .description('create a new codemod package')
+  // FIXME: Commander seems to have issues parsing the paths and arguments
+  .option('--package-name <name>', 'Name of the package')
+  .option('--version <version>', 'Target version')
+  .action((path, options) => init(options.packageName, options.version, path))
+  .addHelpText(
+    'after',
+    `
+Examples:
+  $ npx @codeshift/cli init --package-name foobar --version 10.0.0 ~/Desktop
+  `,
+  );
+
 program.exitOverride();
 
 program.parseAsync(process.argv).catch(e => {

packages/cli/src/init.ts

@@ -0,0 +1,13 @@
+import { initDirectory } from '@codeshift/initializer';
+
+export default async function init(
+  packageName: string,
+  version: string,
+  targetPath: string = '.',
+) {
+  initDirectory(packageName, version, targetPath);
+
+  console.log(
+    `🚚 New codemod package created at: ${targetPath}/${packageName}`,
+  );
+}

packages/initializer/package.json

@@ -1,6 +1,5 @@
 {
   "name": "@codeshift/initializer",
-  "private": true,
   "version": "0.1.0",
   "main": "dist/codeshift-initializer.cjs.js",
   "types": "dist/codeshift-initializer.cjs.d.ts",

packages/initializer/src/index.ts

@@ -2,21 +2,20 @@ import fs from 'fs-extra';
 import semver from 'semver';
 import * as recast from 'recast';
 
-function main(packageName: string, version: string) {
-  if (!packageName) throw new Error('Package name was not provided');
-  if (!version) throw new Error('Version was not provided');
-
+export function initDirectory(
+  packageName: string,
+  version: string,
+  targetPath: string = './',
+) {
   if (!semver.valid(version)) {
     throw new Error(
       `Provided version ${version} is not a valid semver version`,
     );
   }
 
-  const communityDirectoryPath = `${__dirname}/../../../community`;
-  const safePackageName = packageName.replace('/', '__');
-  const codemodBasePath = `${communityDirectoryPath}/${safePackageName}`;
-  const codemodPath = `${codemodBasePath}/${version}`;
-  const configPath = `${codemodBasePath}/codeshift.config.js`;
+  const basePath = `${targetPath}/${packageName.replace('/', '__')}`;
+  const codemodPath = `${basePath}/${version}`;
+  const configPath = `${basePath}/codeshift.config.js`;
   const motionsPath = `${codemodPath}/motions`;
 
   fs.mkdirSync(codemodPath, { recursive: true });
@@ -88,10 +87,4 @@ function main(packageName: string, version: string) {
       recast.prettyPrint(ast, { quote: 'single', trailingComma: true }).code,
     );
   }
-
-  console.log(
-    `🚚 New codemod package created at: community/${safePackageName}/${version}`,
-  );
 }
-
-main(process.argv[2], process.argv[3]);

scripts/initialize.ts

@@ -0,0 +1,16 @@
+import { initDirectory } from '@codeshift/initializer';
+
+export function main(packageName: string, version: string) {
+  const path = `${__dirname}/../community`;
+
+  if (!packageName) throw new Error('Package name was not provided');
+  if (!version) throw new Error('Version was not provided');
+
+  initDirectory(packageName, version, path);
+
+  console.log(
+    `🚚 New codemod package created at: community/${packageName}/${version}`,
+  );
+}
+
+main(process.argv[2], process.argv[3]);

website/docs/api/codeshift-cli.mdx

@@ -117,3 +117,14 @@ Print a list of available codemods for a single package
 Print a list of available codemods for multiple packages
 
 - `@codeshift/cli list mylib, @material-ui/button`
+
+### init
+
+Generates a new codemod at your desired path
+
+**example:**
+
+Create a new codemod package called foobar with a transform for version 10
+on the Desktop
+
+- `@codeshift/cli init --packageName="foobar" --version"10.0.0" ~/Desktop`