Easily read/write JSON files in Node.js. Note: this module cannot be used in the browser.
Writing JSON.stringify() and then fs.writeFile() and JSON.parse() with fs.readFile() enclosed in try/catch blocks became annoying.
npm install --save jsonfile
options (object, default undefined): Pass in any fs.readFile options or set reviver for a JSON reviver.
throws(boolean, default:true). IfJSON.parsethrows an error, pass this error to the callback. Iffalse, returnsnullfor the object.
var jsonfile = require('jsonfile')
var file = '/tmp/data.json'
jsonfile.readFile(file, function(err, obj) {
console.dir(obj)
})options (object, default undefined): Pass in any fs.readFileSync options or set reviver for a JSON reviver.
throws(boolean, default:true). If an error is encountered reading or parsing the file, throw the error. Iffalse, returnsnullfor the object.
var jsonfile = require('jsonfile')
var file = '/tmp/data.json'
console.dir(jsonfile.readFileSync(file))options: Pass in any fs.writeFile options or set replacer for a JSON replacer. Can also pass in spaces and override EOL string.
var jsonfile = require('jsonfile')
var file = '/tmp/data.json'
var obj = {name: 'JP'}
jsonfile.writeFile(file, obj, function (err) {
console.error(err)
})formatting with spaces:
var jsonfile = require('jsonfile')
var file = '/tmp/data.json'
var obj = {name: 'JP'}
jsonfile.writeFile(file, obj, {spaces: 2}, function(err) {
console.error(err)
})overriding EOL:
var jsonfile = require('jsonfile')
var file = '/tmp/data.json'
var obj = {name: 'JP'}
jsonfile.writeFile(file, obj, {spaces: 2, EOL: '\r\n'}, function(err) {
console.error(err)
})appending to an existing JSON file:
You can use fs.writeFile option {flag: 'a'} to achieve this.
var jsonfile = require('jsonfile')
var file = '/tmp/mayAlreadyExistedData.json'
var obj = {name: 'JP'}
jsonfile.writeFile(file, obj, {flag: 'a'}, function (err) {
console.error(err)
})options: Pass in any fs.writeFileSync options or set replacer for a JSON replacer. Can also pass in spaces and override EOL string.
var jsonfile = require('jsonfile')
var file = '/tmp/data.json'
var obj = {name: 'JP'}
jsonfile.writeFileSync(file, obj)formatting with spaces:
var jsonfile = require('jsonfile')
var file = '/tmp/data.json'
var obj = {name: 'JP'}
jsonfile.writeFileSync(file, obj, {spaces: 2})overriding EOL:
var jsonfile = require('jsonfile')
var file = '/tmp/data.json'
var obj = {name: 'JP'}
jsonfile.writeFileSync(file, obj, {spaces: 2, EOL: '\r\n'})appending to an existing JSON file:
You can use fs.writeFileSync option {flag: 'a'} to achieve this.
var jsonfile = require('jsonfile')
var file = '/tmp/mayAlreadyExistedData.json'
var obj = {name: 'JP'}
jsonfile.writeFileSync(file, obj, {flag: 'a'})(MIT License)
Copyright 2012-2016, JP Richardson [email protected]
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