/
implementation.js
34 lines (24 loc) · 999 Bytes
/
implementation.js
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'use strict';
var Call = require('es-abstract/2024/Call');
var NewPromiseCapability = require('es-abstract/2024/NewPromiseCapability');
var Type = require('es-abstract/2024/Type');
var setFunctionName = require('set-function-name');
var $TypeError = require('es-errors/type');
var callBound = require('call-bind/callBound');
var $slice = callBound('Array.prototype.slice');
module.exports = setFunctionName(function try_(callbackfn) {
/* eslint no-invalid-this: 0 */
var C = this;
if (Type(C) !== 'Object') {
throw new $TypeError('receiver must be an object'); // step 2
}
var promiseCapability = NewPromiseCapability(C); // step 3
var args = arguments.length > 1 ? $slice(arguments, 1) : [];
try {
var status = Call(callbackfn, undefined, args); // step 4
Call(promiseCapability['[[Resolve]]'], undefined, [status]); // step 6.a
} catch (e) {
Call(promiseCapability['[[Reject]]'], undefined, [e]); // step 5.a
}
return promiseCapability['[[Promise]]'];
}, 'try', true);