Method next

scripts/rubi/wl-parser.ts:198–202

()

    return this.tokens[this.i];
  }
  private next(): Token {
    const t = this.tokens[this.i++];
    if (!t) throw new Error('unexpected end of input');
    return t;
  }
  private expect(value: string): void {
    const t = this.next();
    if (t.kind !== 'punct' || t.value !== value)