---
url: /reference/Interface.ManglePropertiesOptions.md
---
# Interface: ManglePropertiesOptions

## Extends

* `Omit`<`BindingManglePropertiesOptions`, `"cache"`>

## Properties

### cache?

* **Type**: `Record`<`string`, `string` | `false`>
* **Optional**

Stable mappings from original names to output names. `false` reserves an original name.
String targets must be valid identifiers and cannot be `__proto__`, `constructor`, or
`prototype`. Generated mappings are returned as `RolldownOutput.mangleCache`.

***

### debug?

* **Type**: `boolean`
* **Optional**

Generate readable `_$name$_`-style output names.

#### Default

```ts
false
```

#### Inherited from

`Omit.debug`

***

### exclude?

* **Type**: `RegExp`
* **Optional**

JavaScript `RegExp` excluding property names selected by `include`.

#### Inherited from

`Omit.exclude`

***

### include

* **Type**: `RegExp`

JavaScript `RegExp` selecting property names to mangle. The source and flags are compiled
with Rust's regex engine. Flags `i`, `m`, `s`, and `u` are supported.

#### Inherited from

`Omit.include`

***

### quoted?

* **Type**: `boolean`
* **Optional**

Mangle quoted property occurrences in addition to unquoted occurrences.

#### Default

```ts
false
```

#### Inherited from

`Omit.quoted`

***

### reserved?

* **Type**: `string`\[]
* **Optional**

Exact names that are neither mangled nor emitted as automatic output names.

#### Inherited from

`Omit.reserved`