'use strict'; var bind = require('function-bind'); var GetIntrinsic = require('get-intrinsic'); var setFunctionLength = require('set-function-length'); var $TypeError = GetIntrinsic('%TypeError%'); var $apply = GetIntrinsic('%Function.prototype.apply%'); var $call = GetIntrinsic('%Function.prototype.call%'); var $reflectApply = GetIntrinsic('%Reflect.apply%', true) || bind.call($call, $apply); var $defineProperty = GetIntrinsic('%Object.defineProperty%', true); var $max = GetIntrinsic('%Math.max%'); if ($defineProperty) { try { $defineProperty({}, 'a', { value: 1 }); } catch (e) { // IE 8 has a broken defineProperty $defineProperty = null; } } module.exports = function callBind(originalFunction) { if (typeof originalFunction !== 'function') { throw new $TypeError('a function is required'); } var func = $reflectApply(bind, $call, arguments); return setFunctionLength( func, 1 + $max(0, originalFunction.length - (arguments.length - 1)), true ); }; var applyBind = function applyBind() { return $reflectApply(bind, $apply, arguments); }; if ($defineProperty) { $defineProperty(module.exports, 'apply', { value: applyBind }); } else { module.exports.apply = applyBind; }