work on making the netscript api tighter

markdown/bitburner.ns.atexit.md

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+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [bitburner](./bitburner.md) &gt; [NS](./bitburner.ns.md) &gt; [atExit](./bitburner.ns.atexit.md)
+
+## NS.atExit() method
+
+Add callback function when the script dies
+
+<b>Signature:</b>
+
+```typescript
+atExit(f: () => void): void;
+```
+
+## Parameters
+
+|  Parameter | Type | Description |
+|  --- | --- | --- |
+|  f | () =&gt; void |  |
+
+<b>Returns:</b>
+
+void
+
+## Remarks
+
+RAM cost: 0 GB
+
+NS2 exclusive
+
+Add callback to be executed when the script dies.
+