add a question, remind user to back up files

Author: ygj6

bin/vue-codemod.ts

@@ -8,6 +8,7 @@ import * as yargs from 'yargs'
 import * as globby from 'globby'
 
 import createDebug from 'debug'
+import { question } from 'readline-sync'
 
 import builtInTransformations from '../transformations'
 import { excludedTransformations } from '../transformations'
@@ -59,6 +60,15 @@ const {
 
 // TODO: port the `Runner` interface of jscodeshift
 async function main() {
+  // Remind user to back up files
+  const answer = question('Warning!!\n ' +
+    'This tool may overwrite files.\n' +
+    'Enter yes to continue:'
+  )
+  if (answer.trim() !== 'yes') {
+    return
+  }
+
   const resolvedPaths = globby.sync(files as string[])
   if (transformationName != undefined) {
     const transformationModule = loadTransformationModule(transformationName)

package.json

@@ -36,6 +36,7 @@
     "globby": "^11.0.2",
     "jscodeshift": "^0.11.0",
     "lru-cache": "^6.0.0",
+    "readline-sync": "^1.4.10",
     "source-map": "^0.6.1",
     "vue-eslint-parser": "^7.6.0",
     "yargs": "^16.2.0"
@@ -47,6 +48,7 @@
     "@types/jest": "^26.0.3",
     "@types/lodash": "^4.14.170",
     "@types/node": "^12.12.47",
+    "@types/readline-sync": "^1.4.3",
     "@types/yargs": "^15.0.4",
     "@typescript-eslint/parser": "^4.27.0",
     "eslint": "^7.29.0",

yarn.lock

@@ -1273,6 +1273,11 @@
   resolved "https://registry.yarnpkg.com/@types/prettier/-/prettier-2.1.6.tgz#f4b1efa784e8db479cdb8b14403e2144b1e9ff03"
   integrity sha512-6gOkRe7OIioWAXfnO/2lFiv+SJichKVSys1mSsgyrYHSEjk8Ctv4tSR/Odvnu+HWlH2C8j53dahU03XmQdd5fA==
 
+"@types/readline-sync@^1.4.3":
+  version "1.4.3"
+  resolved "https://registry.yarnpkg.com/@types/readline-sync/-/readline-sync-1.4.3.tgz#eac55a39d5a349912062c9e5216cd550c07fd9c8"
+  integrity sha512-YP9NVli96E+qQLAF2db+VjnAUEeZcFVg4YnMgr8kpDUFwQBnj31rPLOVHmazbKQhaIkJ9cMHsZhpKdzUeL0KTg==
+
 "@types/stack-utils@^2.0.0":
   version "2.0.0"
   resolved "https://registry.yarnpkg.com/@types/stack-utils/-/stack-utils-2.0.0.tgz#7036640b4e21cc2f259ae826ce843d277dad8cff"
@@ -4383,6 +4388,11 @@ read-pkg@^5.2.0:
     parse-json "^5.0.0"
     type-fest "^0.6.0"
 
+readline-sync@^1.4.10:
+  version "1.4.10"
+  resolved "https://registry.yarnpkg.com/readline-sync/-/readline-sync-1.4.10.tgz#41df7fbb4b6312d673011594145705bf56d8873b"
+  integrity sha512-gNva8/6UAe8QYepIQH/jQ2qn91Qj0B9sYjMBBs3QOB8F2CXcKgLxQaJRP76sWVRQt+QU+8fAkCbCvjjMFu7Ycw==
+
 [email protected]:
   version "0.17.2"
   resolved "https://registry.yarnpkg.com/recast/-/recast-0.17.2.tgz#f18f18cf20bf3fad4522621a7f9c2ada37276814"