Method error

src/client/sandbox.mjs:244–258

(exception)

  }

  error(exception) {
    if (!this.output) throw exception
    let stack = parseStack(exception.stack)
    this.output.out("error", [String(exception) + (stack.length ? " (" + frameString(stack[0]) + ")" : "")])
    if (stack.length > 1) {
      this.output.div.lastChild.appendChild(document.createTextNode(" "))
      let mark = this.output.div.lastChild.appendChild(document.createElement("span"))
      mark.innerHTML = "…"
      mark.className = "sandbox-output-etc"
      mark.addEventListener("click", () => {
        mark.className = ""
        mark.innerHTML = "\n called from " + stack.slice(1).map(frameString).join("\n called from ")
      })
    }
  }

  clearEvents() {
    while (this.timeouts.length) this.win.clearTimeout(this.timeouts.pop())