> ## Documentation Index
> Fetch the complete documentation index at: https://docs.js-confuser.com/llms.txt
> Use this file to discover all available pages before exploring further.

# AST Scrambler

> Semantically changes the AST to bypass automated tools.

* Option name: `"astScrambler"`

* Option values: `true/false/0-1`

***

### Input / Output

This example showcases how `AST Scrambler` transforms the code. Try it out by changing the input code and see changes apply in real-time.

```js title="Input.js" lines interactive-mode="obfuscate" theme={null}
// Input.js
console.log('My First Message');
console.log('My Second Message');
console.log('My Third Message');

// Output.js
rK1n0k(console.log('My First Message'), console.log('My Second Message'));
function rK1n0k() {
  rK1n0k = function () {};
}
console.log('My Third Message');
```

***

### Usage Example

The provided code example will obfuscate the file `input.js` and write the output to a file named `output.js`.

```js title="Usage Example" lines theme={null}
import JSConfuser from "js-confuser";
import {readFileSync, writeFileSync} from "fs";

// Read input code
const sourceCode = readFileSync("input.js", "utf8");
const options = {
  target: 'browser',
  astScrambler: true,
};

JSConfuser.obfuscate(sourceCode, options).then((result)=>{
  // Write output code
  writeFileSync("output.js", result.code);
}).catch(err=>{
  // Error occurred
  console.error(err);  
});
```

***

#### Enabled In

* [High Preset](/presets/high): Yes
* [Medium Preset](/presets/medium): Yes
* [Low Preset](/presets/low): Yes