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A script to convert .js to .jsx when they contains JSX tags
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// node ./rename-js-to-jsx.js ./my/folder | |
const fs = require('fs') | |
const path = require('path') | |
// Options | |
const src = process.argv[2] ?? './' | |
const pattern = process.argv[3] ? new RegExp(`${process.argv[3]}$`) : /.js$/ | |
const newExtension = process.argv[4] ?? '.jsx' | |
console.log(`Path = ${src} ; pattern = ${pattern} ; newExtension = ${newExtension}`) | |
const getAllFiles = (dirPath, pattern, files = []) => { | |
const filesInDirectory = fs.readdirSync(dirPath) | |
return filesInDirectory.reduce((foundFiles, file) => { | |
if (fs.statSync(`${dirPath}/${file}`).isDirectory()) { | |
return getAllFiles(`${dirPath}/${file}`, pattern, foundFiles) | |
} else { | |
if (!matchPattern(file, pattern)) { | |
return foundFiles | |
} | |
return [ | |
...foundFiles, | |
path.join(__dirname, dirPath, '/', file), | |
] | |
} | |
}, files) | |
} | |
const matchPattern = (filename, pattern) => filename.match(pattern) | |
const readFile = (path) => fs.readFileSync(path).toString('utf-8') | |
const renameFile = (path, extension) => { | |
try { | |
fs.renameSync(path, path.replace(pattern, extension)) | |
console.log(`${path} [RENAMED]`) | |
return true | |
} catch (error) { | |
console.log(`${path} [KO]`, error) | |
return false | |
} | |
} | |
// <> </> <tag /> <tag></tag> | |
const containsJSX = (content) => /(<\/|\/>)/.test(content) | |
// Run | |
console.log('Search files...') | |
const files = getAllFiles(src, pattern) | |
.map((file) => ({filename: file, content: readFile(file)})) | |
.filter((file) => containsJSX(file.content)) | |
.map((file) => file.filename) | |
console.log('Found files', files.length) | |
console.log('Renaming...') | |
const successFiles = files | |
.map((file) => renameFile(file, newExtension)) | |
.filter(Boolean) | |
console.log(`Rename ${successFiles.length}/${files.length} with success.`) | |
if (successFiles.length !== files.length) { | |
console.log('Execution encountered some errors.') | |
process.exit(1) | |
} |
How does it work, would you please explain!
tanks
How does it work, would you please explain!
This script will scans the files in the given directory and renames all .js
files that contains JSX tags to .jsx
files.
Signature:
node ./rename-js-to-jsx.js [directory] [oldExtension] [newExtension]
By default:
directory
is the current directoryoldExtension
is.js
newExtension
is.jsx
You can customize which files to scan with the second argument.
For example to rename all .ts
that contains JSX tags to .jsx
(not a real example but still):
node ./rename-js-to-jsx.js ./src .ts
You can also customize which new extension you want for your JSX files with the third argument (more sense for this one):
node ./rename-js-to-jsx.js ./src .ts .tsx
I think the period in the pattern on line 8 should be escaped, otherwise treated as any character in regexp:
const pattern = process.argv[3] ? new RegExp(`${process.argv[3]}$`) : /\.js$/
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You can also convert test snapshot files extension too with: