angular / angular/angularfire

collection() missing type arguments

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#3,081 5 comments 11 reactions 0 assignees View on GitHub
Dominant language
TypeScript
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Description

There are no exported functions for the collection function that allow a type to be specified. I see reference to collection() in the docs and in the upgrade information (screenshot below) but it isn't working in my project. If I try to add a type to get a typed collection reference, I get the error: Expected 0 type arguments, but got 1.

### Version info

**Angular:** 13.0.3

**Firebase:** 9.0.0

**AngularFire:** 7.2

**Other (e.g. Ionic/Cordova, Node, browser, operating system):** MacOs Montery

### How to reproduce these conditions

**Steps to set up and reproduce**

Attempt to create a collection reference with a custom type

**Sample data and security rules**

The data isn't important.

### Debug output

Error in VS Code:
![image](https://user-images.githubusercontent.com/13428680/144634937-1339e920-953c-4735-99df-9a3356c6d7b4.png)

AngularFire Upgrade Docs:
![image](https://user-images.githubusercontent.com/13428680/144635654-ad748e38-823d-4eeb-bfb8-0135096a75a1.png)

### Expected behavior

There should be a version of the collection function that takes a type. There are version of other functions that take a type and even expect a typed CollectionReference.

### Actual behavior

No function exists that takes a type.

Contributor guide

Open the contributing guide

Research direction

Start by locating the exported collection() entry point and compare it with the other typed functions referenced in the upgrade documentation. Reproduce the TypeScript error with collection() using the versions listed in the issue, then verify that a custom type is accepted and the resulting collection reference is typed.

Written by the indexing model from the issue text.

Assessment

Tech stack
angular, firebase, typescript
Domain
databases
Issue type
Feature
Difficulty
3/5
Estimated time
1-2 days
Activity status
Stale
Clarity
Mostly clear
Newbie friendliness
35/100

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