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