df4e06385a
Initial setup of project dependencies including axios, express, dotenv, and other supporting packages. Added configuration files and documentation for project setup and usage.
61 lines
1.2 KiB
JavaScript
61 lines
1.2 KiB
JavaScript
/*!
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* merge-descriptors
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* Copyright(c) 2014 Jonathan Ong
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* Copyright(c) 2015 Douglas Christopher Wilson
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* MIT Licensed
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*/
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'use strict'
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/**
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* Module exports.
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* @public
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*/
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module.exports = merge
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/**
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* Module variables.
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* @private
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*/
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var hasOwnProperty = Object.prototype.hasOwnProperty
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/**
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* Merge the property descriptors of `src` into `dest`
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*
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* @param {object} dest Object to add descriptors to
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* @param {object} src Object to clone descriptors from
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* @param {boolean} [redefine=true] Redefine `dest` properties with `src` properties
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* @returns {object} Reference to dest
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* @public
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*/
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function merge (dest, src, redefine) {
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if (!dest) {
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throw new TypeError('argument dest is required')
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}
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if (!src) {
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throw new TypeError('argument src is required')
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}
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if (redefine === undefined) {
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// Default to true
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redefine = true
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}
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Object.getOwnPropertyNames(src).forEach(function forEachOwnPropertyName (name) {
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if (!redefine && hasOwnProperty.call(dest, name)) {
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// Skip descriptor
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return
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}
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// Copy descriptor
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var descriptor = Object.getOwnPropertyDescriptor(src, name)
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Object.defineProperty(dest, name, descriptor)
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})
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return dest
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}
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