89 lines
1.9 KiB
JavaScript
89 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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