rk
4 天以前 fea8e0742ee241a94c5bbd4f452d6ad82cf4dd9c
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'use strict';
var uncurryThis = require('../internals/function-uncurry-this-clause');
var aCallable = require('../internals/a-callable');
var NATIVE_BIND = require('../internals/function-bind-native');
 
var bind = uncurryThis(uncurryThis.bind);
 
// optional / simple context binding
module.exports = function (fn, that) {
  aCallable(fn);
  return that === undefined ? fn : NATIVE_BIND ? bind(fn, that) : function (/* ...args */) {
    return fn.apply(that, arguments);
  };
};