Adds transfrom prompt

Author: danieldelcore

package.json

@@ -42,6 +42,7 @@
     "@changesets/cli": "^2.6.2",
     "@manypkg/cli": "^0.11.1",
     "@preconstruct/cli": "^2.0.0",
+    "@types/inquirer": "^8.2.1",
     "@types/jest": "^26.0.15",
     "@types/jscodeshift": "^0.11.0",
     "@types/tar": "^4.0.4",

packages/cli/package.json

@@ -15,13 +15,16 @@
     "start:dev": "ts-node src/index.ts"
   },
   "dependencies": {
+    "@codemod/cli": "^3.1.2",
     "@codeshift/fetcher": "^0.0.3",
     "@codeshift/initializer": "^0.3.0",
     "@codeshift/types": "*",
     "@codeshift/validator": "^0.4.0",
     "chalk": "^4.1.0",
     "commander": "^8.2.0",
+    "find-up": "^5.0.0",
     "fs-extra": "^9.1.0",
+    "inquirer": "^8.2.4",
     "jscodeshift": "^0.13.1",
     "live-plugin-manager": "^0.15.1",
     "lodash": "^4.17.21",

packages/cli/src/main.ts

@@ -1,14 +1,18 @@
 import path from 'path';
 import semver from 'semver';
 import chalk from 'chalk';
-import { PluginManager } from 'live-plugin-manager';
+import findUp from 'find-up';
+import inquirer from 'inquirer';
 
+import { fetchConfigAtPath } from '@codeshift/fetcher';
+import { PluginManager } from 'live-plugin-manager';
 // @ts-ignore Run transform(s) on path https://github.com/facebook/jscodeshift/issues/398
 import * as jscodeshift from 'jscodeshift/src/Runner';
 
 import { Flags } from './types';
 import { InvalidUserInputError } from './errors';
 import { fetchPackageConfig } from './fetch-package';
+import { getTransformPrompt } from './prompt';
 
 export default async function main(paths: string[], flags: Flags) {
   const packageManager = new PluginManager({
@@ -18,9 +22,32 @@ export default async function main(paths: string[], flags: Flags) {
   let transforms: string[] = [];
 
   if (!flags.transform && !flags.packages) {
-    throw new InvalidUserInputError(
-      'No transform provided, please specify a transform with either the --transform or --packages flags',
+    console.log(
+      chalk.green(
+        'No transforms specified, attempting to find local codeshift.config file',
+      ),
     );
+
+    const configFilePath = await findUp([
+      'codeshift.config.js',
+      'codeshift.config.ts',
+      'codeshift.config.tsx',
+    ]);
+
+    if (!configFilePath) {
+      throw new InvalidUserInputError(
+        'No transform provided, please specify a transform with either the --transform or --packages flags',
+      );
+    }
+
+    console.log(
+      chalk.green('Found local codeshift.config file at:'),
+      configFilePath,
+    );
+
+    const config = await fetchConfigAtPath(configFilePath);
+    const answers = await inquirer.prompt([getTransformPrompt(config)]);
+    transforms.push(answers.transform);
   }
 
   if (paths.length === 0) {

packages/cli/src/prompt.ts

@@ -0,0 +1,22 @@
+import inquirer from 'inquirer';
+
+import { CodeshiftConfig } from '@codeshift/types';
+
+export const getTransformPrompt = (config: CodeshiftConfig) => {
+  const transforms = Object.keys(config.transforms || {});
+  const presets = Object.keys(config.presets || {});
+
+  const choices = [
+    transforms.length ? new inquirer.Separator('Transforms') : undefined,
+    ...transforms,
+    presets.length ? new inquirer.Separator('Presets') : undefined,
+    ...presets,
+  ].filter(item => item !== undefined);
+
+  return {
+    type: 'list',
+    name: 'transform',
+    message: 'Which transform would you like to run?',
+    choices,
+  };
+};

packages/fetcher/src/index.ts

@@ -9,6 +9,18 @@ function resolveConfigExport(pkg: any): CodeshiftConfig {
   return pkg.default ? pkg.default : pkg;
 }
 
+function requireConfig(filePath: string, resolvedPath: string ) {
+  try {
+      // eslint-disable-next-line @typescript-eslint/no-var-requires
+      const pkg = require(resolvedPath);
+      return resolveConfigExport(pkg);
+    } catch (e) {
+      throw new Error(
+        `Found config file "${filePath}" but was unable to parse it. This can be caused when transform or preset paths are incorrect.`,
+      );
+    }
+}
+
 export async function fetchConfig(
   filePath: string,
 ): Promise<CodeshiftConfig | undefined> {
@@ -24,20 +36,27 @@ export async function fetchConfig(
 
     if (!exists) continue;
 
-    try {
-      // eslint-disable-next-line @typescript-eslint/no-var-requires
-      const pkg = require(resolvedMatchedPath);
-      return resolveConfigExport(pkg);
-    } catch (e) {
-      throw new Error(
-        `Found config file "${matchedPath}" but was unable to parse it. This can be caused when transform or preset paths are incorrect.`,
-      );
-    }
+    return requireConfig(matchedPath, resolvedMatchedPath);
   }
 
   return undefined;
 }
 
+export async function fetchConfigAtPath(
+  filePath: string,
+): Promise<CodeshiftConfig> {
+  const resolvedFilePath = path.resolve(filePath);
+  const exists = fs.existsSync(resolvedFilePath);
+
+  if (!exists) {
+    throw new Error(
+      `Unable to find config at path: ${filePath}`,
+    );
+  };
+
+  return requireConfig(filePath, resolvedFilePath);
+}
+
 export async function fetchPackage(
   packageName: string,
   packageManager: PluginManager,