writeJson(file, object, [options, callback])

Writes an object to a JSON file.

Alias: `writeJSON()`

- `file` `<String>`
- `object` `<Object>`
- `options` `<Object>`
  - `spaces` `<Number|String>` Number of spaces to indent; or a string to use for indentation (i.e. pass ‘’\t'`for tab indentation). See [the docs](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/JSON/stringify#The_space_argument) for more info. -`EOL<String>`Set EOL character. Default is`
    `. -`replacer`[JSON replacer](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/JSON/stringify#The_replacer_parameter)`
  - `Also accepts [`fs.writeFile<tt>options](https://nodejs.org/api/fs.html#fs_fs_writefile_file_data_options_callback) -callback<Function>`

# Example:

const fs = require('fs-extra')
fs.writeJson('./package.json', {name: 'fs-extra'}, err => {
if (err) return console.error(err)
console.log('success!')
})
// With Promises
fs.writeJson('./package.json', {name: 'fs-extra'})
.then(() => {
console.log('success!')
})
.catch(err => {
console.error(err)
})

See also: `outputJson()`