Update index.d.ts

[jspri]

I'm fairly sure this is correct. Kind of hard to work out with the database.js minified.

Issue #53

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[jspri]

I signed it!

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CLAs look good, thanks!

[hiranya911]

This need to be fixed in https://github.com/firebase/firebase-js-sdk. The Admin SDK simply pulls the minified database code from the JS SDK repo.

However, I believe the issue you're referring to has been fixed in that repo recently:

https://github.com/firebase/firebase-js-sdk/blob/00f9c37543b6250f601f524bb50408ccf1c56bd9/src/database/api/Query.ts#L241
firebase/firebase-js-sdk@a8919cd

When we sync the database code again, this fix will make its way to the Admin SDK.