by yituan @yi-tuan
Implement the advanced util type RequiredKeys<T>, which picks all the required keys into a union.
For example
type Result = RequiredKeys<{ foo: number; bar?: string }>;
// expected to be “foo”
by yituan @yi-tuan
Implement the advanced util type RequiredKeys<T>, which picks all the required keys into a union.
For example
type Result = RequiredKeys<{ foo: number; bar?: string }>;
// expected to be “foo”