Method expect

static/katex/katex.mjs:14919–14931

* Checks a result to make sure it has the right type, and throws an * appropriate error otherwise.

(text, consume)

  expect(text, consume) {
    if (consume === void 0) {
      consume = true;
    }

    if (this.nextToken.text !== text) {
      throw new ParseError("Expected '" + text + "', got '" + this.nextToken.text + "'", this.nextToken);
    }

    if (consume) {
      this.consume();
    }
  }
  /**
   * Considers the current look ahead token as consumed,
   * and fetches the one after that as the new look ahead.