# compile-time error

[JS](https://lochiwei.gitbook.io/web/js) ⟩ [error](https://lochiwei.gitbook.io/web/js/err) ⟩ compile-time

{% hint style="info" %}
errors occurred <mark style="color:yellow;">**while**</mark> [compiling](https://lochiwei.gitbook.io/web/js/compile) (before the code begins to run).
{% endhint %}

{% tabs %}
{% tab title="🔴 主題" %}

* [early-errors](https://lochiwei.gitbook.io/web/js/err/compile/early-errors "mention") - erros on [parsing](https://lochiwei.gitbook.io/web/js/compile/parsing "mention") stage.
* [syntax](https://lochiwei.gitbook.io/web/js/err/syntax "mention") ⟩
  * [duplicate-parameter](https://lochiwei.gitbook.io/web/js/err/syntax/duplicate-parameter "mention")
    {% endtab %}
    {% endtabs %}