/
file.js
63 lines (57 loc) Β· 1.5 KB
/
file.js
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'use strict'
const debug = require('debug')('lint-staged:file')
const fs = require('fs')
const { promisify } = require('util')
const fsReadFile = promisify(fs.readFile)
const fsUnlink = promisify(fs.unlink)
const fsWriteFile = promisify(fs.writeFile)
/**
* Read contents of a file to buffer
* @param {String} filename
* @param {Boolean} [ignoreENOENT=true] β Whether to throw if the file doesn't exist
* @returns {Promise<Buffer>}
*/
const readFile = async (filename, ignoreENOENT = true) => {
debug('Reading file `%s`', filename)
try {
return await fsReadFile(filename)
} catch (error) {
if (ignoreENOENT && error.code === 'ENOENT') {
debug("File `%s` doesn't exist, ignoring...", filename)
return null // no-op file doesn't exist
} else {
throw error
}
}
}
/**
* Remove a file
* @param {String} filename
* @param {Boolean} [ignoreENOENT=true] β Whether to throw if the file doesn't exist
*/
const unlink = async (filename, ignoreENOENT = true) => {
debug('Removing file `%s`', filename)
try {
await fsUnlink(filename)
} catch (error) {
if (ignoreENOENT && error.code === 'ENOENT') {
debug("File `%s` doesn't exist, ignoring...", filename)
} else {
throw error
}
}
}
/**
* Write buffer to file
* @param {String} filename
* @param {Buffer} buffer
*/
const writeFile = async (filename, buffer) => {
debug('Writing file `%s`', filename)
await fsWriteFile(filename, buffer)
}
module.exports = {
readFile,
unlink,
writeFile
}