74 lines
1.7 KiB
JavaScript
74 lines
1.7 KiB
JavaScript
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'use strict';
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const path = require('path');
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const fs = require('graceful-fs');
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const writeFileAtomic = require('write-file-atomic');
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const sortKeys = require('sort-keys');
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const makeDir = require('make-dir');
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const pify = require('pify');
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const detectIndent = require('detect-indent');
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const init = (fn, fp, data, opts) => {
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if (!fp) {
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throw new TypeError('Expected a filepath');
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}
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if (data === undefined) {
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throw new TypeError('Expected data to stringify');
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}
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opts = Object.assign({
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indent: '\t',
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sortKeys: false
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}, opts);
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if (opts.sortKeys) {
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data = sortKeys(data, {
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deep: true,
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compare: typeof opts.sortKeys === 'function' && opts.sortKeys
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});
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}
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return fn(fp, data, opts);
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};
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const readFile = fp => pify(fs.readFile)(fp, 'utf8').catch(() => {});
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const main = (fp, data, opts) => {
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return (opts.detectIndent ? readFile(fp) : Promise.resolve())
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.then(str => {
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const indent = str ? detectIndent(str).indent : opts.indent;
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const json = JSON.stringify(data, opts.replacer, indent);
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return pify(writeFileAtomic)(fp, `${json}\n`, {mode: opts.mode});
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});
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};
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const mainSync = (fp, data, opts) => {
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let indent = opts.indent;
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if (opts.detectIndent) {
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try {
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const file = fs.readFileSync(fp, 'utf8');
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indent = detectIndent(file).indent;
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} catch (err) {
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if (err.code !== 'ENOENT') {
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throw err;
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}
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}
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}
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const json = JSON.stringify(data, opts.replacer, indent);
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return writeFileAtomic.sync(fp, `${json}\n`, {mode: opts.mode});
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};
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module.exports = (fp, data, opts) => {
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return makeDir(path.dirname(fp), {fs})
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.then(() => init(main, fp, data, opts));
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};
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module.exports.sync = (fp, data, opts) => {
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makeDir.sync(path.dirname(fp), {fs});
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init(mainSync, fp, data, opts);
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};
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