88 lines
1.9 KiB
JavaScript
88 lines
1.9 KiB
JavaScript
let _fs
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try {
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_fs = require('graceful-fs')
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} catch (_) {
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_fs = require('fs')
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}
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const universalify = require('universalify')
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const { stringify, stripBom } = require('./utils')
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async function _readFile (file, options = {}) {
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if (typeof options === 'string') {
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options = { encoding: options }
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}
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const fs = options.fs || _fs
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const shouldThrow = 'throws' in options ? options.throws : true
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let data = await universalify.fromCallback(fs.readFile)(file, options)
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data = stripBom(data)
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let obj
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try {
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obj = JSON.parse(data, options ? options.reviver : null)
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} catch (err) {
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if (shouldThrow) {
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err.message = `${file}: ${err.message}`
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throw err
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} else {
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return null
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}
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}
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return obj
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}
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const readFile = universalify.fromPromise(_readFile)
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function readFileSync (file, options = {}) {
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if (typeof options === 'string') {
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options = { encoding: options }
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}
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const fs = options.fs || _fs
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const shouldThrow = 'throws' in options ? options.throws : true
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try {
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let content = fs.readFileSync(file, options)
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content = stripBom(content)
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return JSON.parse(content, options.reviver)
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} catch (err) {
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if (shouldThrow) {
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err.message = `${file}: ${err.message}`
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throw err
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} else {
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return null
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}
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}
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}
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async function _writeFile (file, obj, options = {}) {
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const fs = options.fs || _fs
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const str = stringify(obj, options)
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await universalify.fromCallback(fs.writeFile)(file, str, options)
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}
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const writeFile = universalify.fromPromise(_writeFile)
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function writeFileSync (file, obj, options = {}) {
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const fs = options.fs || _fs
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const str = stringify(obj, options)
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// not sure if fs.writeFileSync returns anything, but just in case
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return fs.writeFileSync(file, str, options)
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}
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const jsonfile = {
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readFile,
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readFileSync,
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writeFile,
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writeFileSync
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}
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module.exports = jsonfile
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