ix/src/util/bindcallback.ts

The Interactive Extensions for JavaScript

/**
 * @ignore
 */
export function bindCallback(func: any, thisArg: any, argCount: number) {
  if (typeof thisArg === 'undefined') {
    return func;
  }
  switch (argCount) {
    case 0:
      return function () {
        return func.call(thisArg);
      };
    case 1:
      return function (arg: any) {
        return func.call(thisArg, arg);
      };
    case 2:
      return function (value: any, index: number) {
        return func.call(thisArg, value, index);
      };
    case 3:
      return function (value: any, index: number, collection: any[]) {
        return func.call(thisArg, value, index, collection);
      };
    default:
      return function () {
        return func.apply(thisArg, arguments);
      };
  }
}