Method replace

packages/2d/src/lib/code/CodeSignal.ts:204–220

(
    range: CodeRange,
    code: string,
    duration?: number,
  )

    duration: number,
  ): ThreadGenerator;
  public replace(
    range: CodeRange,
    code: string,
    duration?: number,
  ): TOwner | ThreadGenerator {
    if (duration === undefined) {
      const current = this.get();
      const [fragments, index] = extractRange(range, current.fragments);
      fragments[index] = code;
      return this.set({
        progress: current.progress,
        fragments,
      });
    } else {
      return this.replaceTween(range, code, duration);
    }
  }

  private *replaceTween(range: CodeRange, code: string, duration: number) {
    let current = this.get();