wrap.ts

/*!
 * Copyright 2019, OpenTelemetry Authors
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      https://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

import { ShimWrapped } from '../common/types';

/**
 * Checks if certain function has been already wrapped
 * @param func
 */
export function isWrapped(func: any) {
  return (
    typeof func === 'function' &&
    typeof (func as ShimWrapped).__original === 'function' &&
    typeof (func as ShimWrapped).__unwrap === 'function' &&
    (func as ShimWrapped).__wrapped === true
  );
}