# EnsureFirefoxPatched

[**@openpolyfill/firefox-addon-playwright-harness**](/docs/api/reference)

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[@openpolyfill/firefox-addon-playwright-harness](/docs/api/reference/globals) / ensureFirefoxPatched

# Function: ensureFirefoxPatched()

> **ensureFirefoxPatched**(): `Promise`\<`void`\>

Defined in: [src/patch.ts:151](https://github.com/OpenPolyfill/FirefoxAddonPlaywrightHarness/blob/9532a852e3623332cfb2eacd964ebdb4045220e5/src/patch.ts#L151)

## Returns

`Promise`\<`void`\>