hunk.code_window:       this._values[i] = value;
       }
       return this;
     }
     delete(key) {
       let i = this._keys.indexOf(key);
       if (i === -1) { return false; }
       this._values.splice(i, 1);
       this._keys.splice(i, 1);
  
hunk.labels: keep keep keep keep keep replace replace keep keep keep
hunk.after_edit:   delete(key): boolean {
       const i = this._keys.indexOf(key);
  
hunk.file_path: src/util/MapPolyfill.ts
hunk.type: replace
file: import {QueueScheduler} from './QueueScheduler';
  
  export const queue = new QueueScheduler();