2022-07-05 12:42:31 +00:00
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sidebar_label: LaunchOptions.extraPrefsFirefox
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---
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# LaunchOptions.extraPrefsFirefox property
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[Additional preferences](https://searchfox.org/mozilla-release/source/modules/libpref/init/all.js) that can be passed when launching with Firefox.
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**Signature:**
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```typescript
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interface LaunchOptions {extraPrefsFirefox?: Record<string, unknown>;}
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```
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