@deprecated appears for any element access that might access a deprecated member

[andrewbranch]

TypeScript Version: 3.7.x-dev.201xxxxx

Search Terms: deprecated element access

Code

interface Foo {
	/** @deprecated - use `fullName` */
	full_name: string;
	fullName: string;
	email: string;
}

function getFromFoo(foo: Foo, key: keyof Foo) {
	return foo[key];
}

Expected behavior:

Don’t bother me

Actual behavior:

Playground Link

Related Issues: #33092, #38523

[Kingwl]

Thanks! I‘ll take a look

[luke-john]

This seems like the behaviour you'd want, otherwise the advantages of deprecating disappear.

I would expect the use of Exclude to be required in the provided example to avoid the message.

interface Foo {
	/** @deprecated - use `fullName` */
	full_name: string;
	fullName: string;
	email: string;
}

function getFromFoo(foo: Foo, key: Exclude<keyof Foo, 'full_name'>) {
	return foo[key];
}

Playground Link