| /** |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you 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 |
| * |
| * http://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. |
| */ |
| |
| export const cacheWrapper = <T extends Array<any>, U>( |
| fn: (...args: T) => U, |
| cache: Map<string, any>, |
| keyFn: (...args: T) => string = (...args: T) => JSON.stringify([...args]), |
| ) => (...args: T): U => { |
| const key = keyFn(...args); |
| if (cache.has(key)) { |
| return cache.get(key); |
| } |
| const result = fn(...args); |
| cache.set(key, result); |
| return result; |
| }; |
