Statically delete object key JavaScript

Question

I'm using TypeScript along with TSLint, and I have the following code:

var myObj = {}
var id = "key"
myObj[id] = 1
delete myObj[id]

But I receive a hint from TSLint: Do not delete dynamically computed property keys. (no-dynamic-delete)

The rationale for this rule (as stated on the documentation for TSLint):

Deleting dynamically computed keys is dangerous and not well optimized.

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My question is, without disabling this hint in the TSLint configuration file, how should I safely and optimally delete the id key in myObj?

Thorite

github.com/palantir/tslint/issues/3648 – Increate

Is it just suggesting you delete myObj.key without the []? – Dramatist

@Dramatist no, delete myObj[id] is not the same as dekete myObj.id. – Thorite

@AriSeyhun Please extend. Because afaik - it is exactly same (ommiting the mistypo). – Parabolize

@DerZinger myObj[id] uses the variable id, not the field in the object with the key of id. For example let id = 'myKey'; myObj[id] this uses myObj.myKey but with a variable. But myObj.id doesn't use any variables for the key, only the id field directly. – Thorite

Answer 1

a) ignore the warning
b) use a Map instead

Jewelljewelle

Thanks, I went with maps – Thorite

Did you just set myObj[id] to an empty string? – Dermatoglyphics

@Dermatoglyphics Not sure I understand your question? No, deleting a property (what the OP wants) is different from setting it to an empty string. – Jewelljewelle