DMleadgen
46d973904b
Next.js website for Rocky Mountain Vending company featuring: - Product catalog with Stripe integration - Service areas and parts pages - Admin dashboard with Clerk authentication - SEO optimized pages with JSON-LD structured data Co-authored-by: Cursor <cursoragent@cursor.com>
47 lines
1.1 KiB
Text
47 lines
1.1 KiB
Text
import type {Simplify} from './simplify';
|
|
|
|
// Returns `never` if the key is optional otherwise return the key type.
|
|
type RequiredFilter<Type, Key extends keyof Type> = undefined extends Type[Key]
|
|
? Type[Key] extends undefined
|
|
? Key
|
|
: never
|
|
: Key;
|
|
|
|
// Returns `never` if the key is required otherwise return the key type.
|
|
type OptionalFilter<Type, Key extends keyof Type> = undefined extends Type[Key]
|
|
? Type[Key] extends undefined
|
|
? never
|
|
: Key
|
|
: never;
|
|
|
|
/**
|
|
Enforce optional keys (by adding the `?` operator) for keys that have a union with `undefined`.
|
|
|
|
@example
|
|
```
|
|
import type {EnforceOptional} from 'type-fest';
|
|
|
|
type Foo = {
|
|
a: string;
|
|
b?: string;
|
|
c: undefined;
|
|
d: number | undefined;
|
|
};
|
|
|
|
type FooBar = EnforceOptional<Foo>;
|
|
// => {
|
|
// a: string;
|
|
// b?: string;
|
|
// c: undefined;
|
|
// d?: number;
|
|
// }
|
|
```
|
|
|
|
@internal
|
|
@category Object
|
|
*/
|
|
export type EnforceOptional<ObjectType> = Simplify<{
|
|
[Key in keyof ObjectType as RequiredFilter<ObjectType, Key>]: ObjectType[Key]
|
|
} & {
|
|
[Key in keyof ObjectType as OptionalFilter<ObjectType, Key>]?: Exclude<ObjectType[Key], undefined>
|
|
}>;
|