Method #charAt

www/js/_hyperscript.esm.js:260–262

(offset = 1)

    return this.#source.charAt(this.#position + 1);
  }
  #charAt(offset = 1) {
    return this.#source.charAt(this.#position + offset);
  }
  #consumeChar() {
    this.#lastToken = this.#currentChar();
    this.#position++;