no-unnecessary-type-arguments
)Warns if an explicitly specified type argument is the default for that type parameter.
Type parameters in TypeScript may specify a default value. For example:
function f<T = number>() {}
It is redundant to provide an explicit type parameter equal to that default.
Examples of incorrect code for this rule:
function f<T = number>() {} f<number>(); function g<T = number, U = string>() {} g<string, string>(); class C<T = number> {} function h(c: C<number>) {} new C<number>(); class D extends C<number> {} interface I<T = number> {} class Impl implements I<number> {}
Examples of correct code for this rule:
function f<T = number>() {} f<string>(); function g<T = number, U = string>() {} g<number, number>(); class C<T = number> {} new C<string>(); class D extends C<string> {} interface I<T = number> {} class Impl implements I<string> {}