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- 'use strict';
- var bind = require('function-bind');
- var GetIntrinsic = require('get-intrinsic');
- var $apply = GetIntrinsic('%Function.prototype.apply%');
- var $call = GetIntrinsic('%Function.prototype.call%');
- var $reflectApply = GetIntrinsic('%Reflect.apply%', true) || bind.call($call, $apply);
- var $gOPD = GetIntrinsic('%Object.getOwnPropertyDescriptor%', true);
- 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) {
- var func = $reflectApply(bind, $call, arguments);
- if ($gOPD && $defineProperty) {
- var desc = $gOPD(func, 'length');
- if (desc.configurable) {
- // original length, plus the receiver, minus any additional arguments (after the receiver)
- $defineProperty(
- func,
- 'length',
- { value: 1 + $max(0, originalFunction.length - (arguments.length - 1)) }
- );
- }
- }
- return func;
- };
- var applyBind = function applyBind() {
- return $reflectApply(bind, $apply, arguments);
- };
- if ($defineProperty) {
- $defineProperty(module.exports, 'apply', { value: applyBind });
- } else {
- module.exports.apply = applyBind;
- }
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