> ## 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.

# Duplicate Literals Removal

> Duplicate Literals Removal replaces duplicate literals with a single variable name.

* Option name: `"duplicateLiteralsRemoval"`

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

***

### Input / Output

This example showcases how `Duplicate Literals Removal` 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
var myBool1 = true;
var myBool2 = true;

console.log(myBool1 === myBool2); // true

// Output.js
const uBnisL8 = [!0];
var KbhWCr = uBnisL8[0],
  Km734I = uBnisL8[0];
console.log(KbhWCr === Km734I);
```

***

### 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',
  duplicateLiteralsRemoval: 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 (75%)
* [Medium Preset](/presets/medium): Yes (50%)
* [Low Preset](/presets/low): Yes (50%)