Extracts the string keys of the specified object into an array.
Type Parameters
TextendsRecord<string,any>
Object with keys to extract.
Remarks
The reason this isn't called StringKeysOf is because 99% of the time, I
need the string keys to iterate over an object or access a value and I
don't want to cast the key to a string.
Extracts the string keys of the specified object into an array.