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					26 lines
				
				777 B
			| 
											3 years ago
										 | 'use strict' | ||
|  | 
 | ||
|  | exports.fromCallback = function (fn) { | ||
|  |   return Object.defineProperty(function () { | ||
|  |     if (typeof arguments[arguments.length - 1] === 'function') fn.apply(this, arguments) | ||
|  |     else { | ||
|  |       return new Promise((resolve, reject) => { | ||
|  |         arguments[arguments.length] = (err, res) => { | ||
|  |           if (err) return reject(err) | ||
|  |           resolve(res) | ||
|  |         } | ||
|  |         arguments.length++ | ||
|  |         fn.apply(this, arguments) | ||
|  |       }) | ||
|  |     } | ||
|  |   }, 'name', { value: fn.name }) | ||
|  | } | ||
|  | 
 | ||
|  | exports.fromPromise = function (fn) { | ||
|  |   return Object.defineProperty(function () { | ||
|  |     const cb = arguments[arguments.length - 1] | ||
|  |     if (typeof cb !== 'function') return fn.apply(this, arguments) | ||
|  |     else fn.apply(this, arguments).then(r => cb(null, r), cb) | ||
|  |   }, 'name', { value: fn.name }) | ||
|  | } |