42 lines
836 B
JavaScript
42 lines
836 B
JavaScript
'use strict'
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const fs = require('fs')
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const pify = require('./pify')
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const pTry = (fn, ...arguments_) => new Promise(resolve => {
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resolve(fn(...arguments_));
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})
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const pFinally = (promise, onFinally) => {
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onFinally = onFinally || (() => { });
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return promise.then(
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val => new Promise(resolve => {
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resolve(onFinally());
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}).then(() => val),
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err => new Promise(resolve => {
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resolve(onFinally());
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}).then(() => {
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throw err;
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})
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);
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};
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const fsP = pify(fs)
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module.exports = (...args) => {
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const callback = args.pop()
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return fsP
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.open(...args)
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.then(fd => pFinally(pTry(callback, fd), _ => fsP.close(fd)))
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}
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module.exports.sync = (...args) => {
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const callback = args.pop()
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const fd = fs.openSync(...args)
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try {
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return callback(fd)
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} finally {
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fs.closeSync(fd)
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}
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}
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