Method opt

src/parser.js:541–548

Consumes the current token if it matches the provided one and returns true, otherwise returns false

(token)

  /** Consumes the current token if it matches the provided one and returns true, otherwise returns false */
  opt(token) {
    if (this.tkn === token) {
      this.nextToken();
      return true;
    }

    return false;
  }

  /** Consumes the current token if it matches the provided one, otherwise throws */
  expect(token) {