typescript type functions code example
Example 1: typescript function type
interface Date {
toString(): string;
setTime(time: number): number;
}
Example 2: types function typescript
interface Easy_Fix_Solution {
title: string;
callback: Function;
}
Example 3: types function typescript
interface Better_still_safe_but_way_more_flexible_fix {
title: string;
callback: <T = unknown, R = unknown>(args?: T) => R;
}
interface Alternate_Syntax_4_Better_still_safe_but_way_more_flexible_fix {
title: string;
callback<T = unknown, R = unknown>(args?: T): R;
}
Example 4: typescript annotate return type
function add(x: number, y: number): number {
return x + y;
}