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11
backend/node_modules/thenify/History.md
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3.3.1 / 2020-06-18
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==================
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**fixes**
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* [[`0d94a24`](http://github.com/thenables/thenify/commit/0d94a24eb933bc835d568f3009f4d269c4c4c17a)] - fix: remove eval (#30) (Yiyu He <<dead_horse@qq.com>>)
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3.3.0 / 2017-05-19
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==================
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* feat: support options.multiArgs and options.withCallback (#27)
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backend/node_modules/thenify/LICENSE
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backend/node_modules/thenify/LICENSE
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The MIT License (MIT)
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Copyright (c) 2014-2016 Jonathan Ong me@jongleberry.com and contributors
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Permission is hereby granted, free of charge, to any person obtaining a copy
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of this software and associated documentation files (the "Software"), to deal
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in the Software without restriction, including without limitation the rights
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to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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copies of the Software, and to permit persons to whom the Software is
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furnished to do so, subject to the following conditions:
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The above copyright notice and this permission notice shall be included in
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all copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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THE SOFTWARE.
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120
backend/node_modules/thenify/README.md
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# thenify
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[![NPM version][npm-image]][npm-url]
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[![Build status][travis-image]][travis-url]
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[![Test coverage][coveralls-image]][coveralls-url]
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[![Dependency Status][david-image]][david-url]
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[![License][license-image]][license-url]
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[![Downloads][downloads-image]][downloads-url]
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Promisify a callback-based function using [`any-promise`](https://github.com/kevinbeaty/any-promise).
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- Preserves function names
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- Uses a native promise implementation if available and tries to fall back to a promise implementation such as `bluebird`
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- Converts multiple arguments from the callback into an `Array`, also support change the behavior by `options.multiArgs`
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- Resulting function never deoptimizes
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- Supports both callback and promise style
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An added benefit is that `throw`n errors in that async function will be caught by the promise!
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## API
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### fn = thenify(fn, options)
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Promisifies a function.
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### Options
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`options` are optional.
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- `options.withCallback` - support both callback and promise style, default to `false`.
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- `options.multiArgs` - change the behavior when callback have multiple arguments. default to `true`.
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- `true` - converts multiple arguments to an array
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- `false`- always use the first argument
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- `Array` - converts multiple arguments to an object with keys provided in `options.multiArgs`
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- Turn async functions into promises
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```js
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var thenify = require('thenify');
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var somethingAsync = thenify(function somethingAsync(a, b, c, callback) {
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callback(null, a, b, c);
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});
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```
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- Backward compatible with callback
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```js
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var thenify = require('thenify');
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var somethingAsync = thenify(function somethingAsync(a, b, c, callback) {
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callback(null, a, b, c);
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}, { withCallback: true });
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// somethingAsync(a, b, c).then(onFulfilled).catch(onRejected);
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// somethingAsync(a, b, c, function () {});
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```
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or use `thenify.withCallback()`
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```js
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var thenify = require('thenify').withCallback;
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var somethingAsync = thenify(function somethingAsync(a, b, c, callback) {
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callback(null, a, b, c);
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});
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// somethingAsync(a, b, c).then(onFulfilled).catch(onRejected);
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// somethingAsync(a, b, c, function () {});
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```
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- Always return the first argument in callback
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```js
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var thenify = require('thenify');
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var promise = thenify(function (callback) {
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callback(null, 1, 2, 3);
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}, { multiArgs: false });
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// promise().then(function onFulfilled(value) {
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// assert.equal(value, 1);
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// });
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```
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- Converts callback arguments to an object
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```js
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var thenify = require('thenify');
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var promise = thenify(function (callback) {
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callback(null, 1, 2, 3);
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}, { multiArgs: [ 'one', 'tow', 'three' ] });
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// promise().then(function onFulfilled(value) {
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// assert.deepEqual(value, {
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// one: 1,
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// tow: 2,
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// three: 3
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// });
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// });
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```
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[gitter-image]: https://badges.gitter.im/thenables/thenify.png
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[gitter-url]: https://gitter.im/thenables/thenify
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[npm-image]: https://img.shields.io/npm/v/thenify.svg?style=flat-square
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[npm-url]: https://npmjs.org/package/thenify
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[github-tag]: http://img.shields.io/github/tag/thenables/thenify.svg?style=flat-square
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[github-url]: https://github.com/thenables/thenify/tags
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[travis-image]: https://img.shields.io/travis/thenables/thenify.svg?style=flat-square
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[travis-url]: https://travis-ci.org/thenables/thenify
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[coveralls-image]: https://img.shields.io/coveralls/thenables/thenify.svg?style=flat-square
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[coveralls-url]: https://coveralls.io/r/thenables/thenify
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[david-image]: http://img.shields.io/david/thenables/thenify.svg?style=flat-square
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[david-url]: https://david-dm.org/thenables/thenify
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[license-image]: http://img.shields.io/npm/l/thenify.svg?style=flat-square
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[license-url]: LICENSE
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[downloads-image]: http://img.shields.io/npm/dm/thenify.svg?style=flat-square
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[downloads-url]: https://npmjs.org/package/thenify
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77
backend/node_modules/thenify/index.js
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var Promise = require('any-promise')
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var assert = require('assert')
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module.exports = thenify
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/**
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* Turn async functions into promises
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*
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* @param {Function} fn
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* @return {Function}
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* @api public
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*/
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function thenify(fn, options) {
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assert(typeof fn === 'function')
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return createWrapper(fn, options)
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}
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/**
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* Turn async functions into promises and backward compatible with callback
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*
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* @param {Function} fn
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* @return {Function}
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* @api public
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*/
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thenify.withCallback = function (fn, options) {
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assert(typeof fn === 'function')
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options = options || {}
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options.withCallback = true
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return createWrapper(fn, options)
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}
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function createCallback(resolve, reject, multiArgs) {
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// default to true
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if (multiArgs === undefined) multiArgs = true
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return function(err, value) {
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if (err) return reject(err)
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var length = arguments.length
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if (length <= 2 || !multiArgs) return resolve(value)
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if (Array.isArray(multiArgs)) {
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var values = {}
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for (var i = 1; i < length; i++) values[multiArgs[i - 1]] = arguments[i]
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return resolve(values)
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}
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var values = new Array(length - 1)
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for (var i = 1; i < length; ++i) values[i - 1] = arguments[i]
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resolve(values)
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}
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}
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function createWrapper(fn, options) {
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options = options || {}
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var name = fn.name;
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name = (name || '').replace(/\s|bound(?!$)/g, '')
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var newFn = function () {
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var self = this
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var len = arguments.length
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if (options.withCallback) {
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var lastType = typeof arguments[len - 1]
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if (lastType === 'function') return fn.apply(self, arguments)
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}
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var args = new Array(len + 1)
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for (var i = 0; i < len; ++i) args[i] = arguments[i]
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var lastIndex = i
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return new Promise(function (resolve, reject) {
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args[lastIndex] = createCallback(resolve, reject, options.multiArgs)
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fn.apply(self, args)
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})
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}
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Object.defineProperty(newFn, 'name', { value: name })
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return newFn
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}
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31
backend/node_modules/thenify/package.json
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31
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{
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||||
"name": "thenify",
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"description": "Promisify a callback-based function",
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"version": "3.3.1",
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"author": "Jonathan Ong <me@jongleberry.com> (http://jongleberry.com)",
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"license": "MIT",
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"repository": "thenables/thenify",
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"dependencies": {
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"any-promise": "^1.0.0"
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},
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"devDependencies": {
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"bluebird": "^3.1.1",
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"istanbul": "^0.4.0",
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"mocha": "^3.0.2"
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},
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"scripts": {
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||||
"test": "mocha --reporter spec",
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"test-cov": "istanbul cover node_modules/mocha/bin/_mocha -- --reporter dot",
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"test-travis": "istanbul cover node_modules/mocha/bin/_mocha --report lcovonly -- --reporter dot"
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},
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"keywords": [
|
||||
"promisify",
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||||
"promise",
|
||||
"thenify",
|
||||
"then",
|
||||
"es6"
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||||
],
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"files": [
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||||
"index.js"
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||||
]
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||||
}
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||||
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