devsite/node_modules/thenify-all/index.js
2024-07-07 18:49:38 -07:00

74 lines
2.0 KiB
JavaScript

var thenify = require('thenify')
module.exports = thenifyAll
thenifyAll.withCallback = withCallback
thenifyAll.thenify = thenify
/**
* Promisifies all the selected functions in an object.
*
* @param {Object} source the source object for the async functions
* @param {Object} [destination] the destination to set all the promisified methods
* @param {Array} [methods] an array of method names of `source`
* @return {Object}
* @api public
*/
function thenifyAll(source, destination, methods) {
return promisifyAll(source, destination, methods, thenify)
}
/**
* Promisifies all the selected functions in an object and backward compatible with callback.
*
* @param {Object} source the source object for the async functions
* @param {Object} [destination] the destination to set all the promisified methods
* @param {Array} [methods] an array of method names of `source`
* @return {Object}
* @api public
*/
function withCallback(source, destination, methods) {
return promisifyAll(source, destination, methods, thenify.withCallback)
}
function promisifyAll(source, destination, methods, promisify) {
if (!destination) {
destination = {};
methods = Object.keys(source)
}
if (Array.isArray(destination)) {
methods = destination
destination = {}
}
if (!methods) {
methods = Object.keys(source)
}
if (typeof source === 'function') destination = promisify(source)
methods.forEach(function (name) {
// promisify only if it's a function
if (typeof source[name] === 'function') destination[name] = promisify(source[name])
})
// proxy the rest
Object.keys(source).forEach(function (name) {
if (deprecated(source, name)) return
if (destination[name]) return
destination[name] = source[name]
})
return destination
}
function deprecated(source, name) {
var desc = Object.getOwnPropertyDescriptor(source, name)
if (!desc || !desc.get) return false
if (desc.get.name === 'deprecated') return true
return false
}