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September 11, 2020 10:45
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Save remarkablemark/17c9c6a22a41510b2edfa3041ccca95a to your computer and use it in GitHub Desktop.
How to touch a file in Node.js: https://remarkablemark.org/blog/2017/12/17/touch-file-nodejs/
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// callback | |
const { close, open, utimes } = require('fs'); | |
const touch = (path, callback) => { | |
const time = new Date(); | |
utimes(path, time, time, err => { | |
if (err) { | |
return open(path, 'w', (err, fd) => { | |
err ? callback(err) : close(fd, callback); | |
}); | |
} | |
callback(); | |
}); | |
}; | |
// usage | |
const filename = 'file.txt'; | |
touch(filename, err => { | |
if (err) throw err; | |
console.log(`touch ${filename}`); | |
}); |
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// promise | |
const { close, open, utimes } = require('fs'); | |
const touch = path => { | |
return new Promise((resolve, reject) => { | |
const time = new Date(); | |
utimes(path, time, time, err => { | |
if (err) { | |
return open(path, 'w', (err, fd) => { | |
if (err) return reject(err); | |
close(fd, err => (err ? reject(err) : resolve(fd))); | |
}); | |
} | |
resolve(); | |
}); | |
}); | |
}; | |
// usage | |
const filename = 'file.txt'; | |
touch(filename) | |
.then(fd => console.log(`touch ${filename}`)) | |
.catch(err => { | |
throw err; | |
}); |
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// sync | |
const { closeSync, openSync, utimesSync } = require('fs'); | |
const touch = path => { | |
const time = new Date(); | |
try { | |
utimesSync(path, time, time); | |
} catch (err) { | |
closeSync(openSync(path, 'w')); | |
} | |
} | |
// usage | |
const filename = 'file.txt'; | |
touch(filename); | |
console.log(`touch ${filename}`); |
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You have my permission to use this in your project (credit is appreciated). Although the code is unlicensed, you can treat it as MIT: