peek.ts

/* This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at https://mozilla.org/MPL/2.0/.
 * Copyright (C) Oliver Lenehan (sunsetkookaburra), 2022 */

// interface PeekSource<T> {
//   peekable: PeekableStream<T>
// }

// export class PeekableByteStream extends ReadableStream {
//   constructor() {
//     super({
//       type:"bytes",
//       pull: (controller) => {
//         controller.byobRequest.
//       },
//     });
//   }
// }

function validate(value: any): asserts value is number {
  if (value["rick"] !== "roll") throw Error;
}


var x: any = "abc";
validate(x);
x

class Abc {
  constructor(json: Array<Object>) {
    json[0].
    json[0]
    for (const value of json) {

    }
  }
}