Typescript: delete key from object

Asked Dec 23 '19 at 10:32

Active Dec 23 '19 at 11:30

Viewed 49 times

I'm trying to delete a key from an object in Typescript.

The Object is coming from firestore. FriendID is a var (string);

userObj = getDocument.data()['friendsObj'];
delete userObj[friendID];

In previous code, I checked if userMap 'contains' the friendID. If that's the case I use this code. But I get the error:

Element implicitly has an 'any' type because expression of type 'any' can't be used to index type 'Map<any, any>'.

Is it because it doesn't now the exact value of the userMap and friendID?

Thanks!

EDIT:

Example friendsID: "1KDL8932"

Example userObj: { K79DFS: 'Bob', 1KDL8932: 'Jeff'}

edited Dec 23 '19 at 10:41

asked Dec 23 '19 at 10:32

Karel Debedts

What is the type/interface for `userObj`? Looks like it does not have an index. What is the type of `friendID`? – Terry Dec 23 '19 at 10:37
I updated the answer with examples. – Karel Debedts Dec 23 '19 at 10:42
I mean, how do you declare the type for `userObject`? – Terry Dec 23 '19 at 10:42
Ow now I see, I declared it incorrectly, thanks for the help! – Karel Debedts Dec 23 '19 at 10:45

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