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					74 lines
				
				2.0 KiB
			
		
		
			
		
	
	
					74 lines
				
				2.0 KiB
			| 
											3 years ago
										 | 
 | ||
|  | 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 | ||
|  | } |