23 lines
		
	
	
		
			532 B
		
	
	
	
		
			JavaScript
		
	
	
	
	
	
			
		
		
	
	
			23 lines
		
	
	
		
			532 B
		
	
	
	
		
			JavaScript
		
	
	
	
	
	
'use strict';
 | 
						|
 | 
						|
Object.defineProperty(exports, "__esModule", {
 | 
						|
    value: true
 | 
						|
});
 | 
						|
const PROMISE_SYMBOL = Symbol('promiseCallback');
 | 
						|
 | 
						|
function promiseCallback() {
 | 
						|
    let resolve, reject;
 | 
						|
    function callback(err, ...args) {
 | 
						|
        if (err) return reject(err);
 | 
						|
        resolve(args.length > 1 ? args : args[0]);
 | 
						|
    }
 | 
						|
 | 
						|
    callback[PROMISE_SYMBOL] = new Promise((res, rej) => {
 | 
						|
        resolve = res, reject = rej;
 | 
						|
    });
 | 
						|
 | 
						|
    return callback;
 | 
						|
}
 | 
						|
 | 
						|
exports.promiseCallback = promiseCallback;
 | 
						|
exports.PROMISE_SYMBOL = PROMISE_SYMBOL; |