| 1 | let _fs
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| 2 | try {
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| 3 | _fs = require('graceful-fs')
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| 4 | } catch (_) {
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| 5 | _fs = require('fs')
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| 6 | }
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| 7 | const universalify = require('universalify')
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| 8 | const { stringify, stripBom } = require('./utils')
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| 9 |
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| 10 | async function _readFile (file, options = {}) {
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| 11 | if (typeof options === 'string') {
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| 12 | options = { encoding: options }
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| 13 | }
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| 14 |
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| 15 | const fs = options.fs || _fs
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| 16 |
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| 17 | const shouldThrow = 'throws' in options ? options.throws : true
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| 18 |
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| 19 | let data = await universalify.fromCallback(fs.readFile)(file, options)
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| 20 |
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| 21 | data = stripBom(data)
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| 22 |
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| 23 | let obj
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| 24 | try {
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| 25 | obj = JSON.parse(data, options ? options.reviver : null)
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| 26 | } catch (err) {
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| 27 | if (shouldThrow) {
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| 28 | err.message = `${file}: ${err.message}`
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| 29 | throw err
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| 30 | } else {
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| 31 | return null
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| 32 | }
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| 33 | }
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| 34 |
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| 35 | return obj
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| 36 | }
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| 37 |
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| 38 | const readFile = universalify.fromPromise(_readFile)
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| 39 |
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| 40 | function readFileSync (file, options = {}) {
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| 41 | if (typeof options === 'string') {
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| 42 | options = { encoding: options }
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| 43 | }
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| 44 |
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| 45 | const fs = options.fs || _fs
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| 46 |
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| 47 | const shouldThrow = 'throws' in options ? options.throws : true
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| 48 |
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| 49 | try {
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| 50 | let content = fs.readFileSync(file, options)
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| 51 | content = stripBom(content)
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| 52 | return JSON.parse(content, options.reviver)
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| 53 | } catch (err) {
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| 54 | if (shouldThrow) {
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| 55 | err.message = `${file}: ${err.message}`
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| 56 | throw err
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| 57 | } else {
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| 58 | return null
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| 59 | }
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| 60 | }
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| 61 | }
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| 62 |
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| 63 | async function _writeFile (file, obj, options = {}) {
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| 64 | const fs = options.fs || _fs
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| 65 |
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| 66 | const str = stringify(obj, options)
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| 67 |
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| 68 | await universalify.fromCallback(fs.writeFile)(file, str, options)
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| 69 | }
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| 70 |
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| 71 | const writeFile = universalify.fromPromise(_writeFile)
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| 72 |
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| 73 | function writeFileSync (file, obj, options = {}) {
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| 74 | const fs = options.fs || _fs
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| 75 |
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| 76 | const str = stringify(obj, options)
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| 77 | // not sure if fs.writeFileSync returns anything, but just in case
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| 78 | return fs.writeFileSync(file, str, options)
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| 79 | }
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| 80 |
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| 81 | // NOTE: do not change this export format; required for ESM compat
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| 82 | // see https://github.com/jprichardson/node-jsonfile/pull/162 for details
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| 83 | module.exports = {
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| 84 | readFile,
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| 85 | readFileSync,
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| 86 | writeFile,
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| 87 | writeFileSync
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| 88 | }
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