import type { IsNever } from "../is-never.mjs";
import type { Primitive } from "../primitive.mjs";
/**
Matches any primitive, `void`, `Date`, or `RegExp` value.

@group type-fest
*/
export type BuiltIns = Primitive | void | Date | RegExp;
/**
Matches non-recursive types.

@group type-fest
*/
export type NonRecursiveType = BuiltIns | Function | (new (...arguments_: any[]) => unknown);
/**
Returns a boolean for whether the two given types extends the base type.

@group type-fest
*/
export type IsBothExtends<
	BaseType,
	FirstType,
	SecondType
> = FirstType extends BaseType ? SecondType extends BaseType ? true : false : false;
/**
Test if the given function has multiple call signatures.

Needed to handle the case of a single call signature with properties.

Multiple call signatures cannot currently be supported due to a TypeScript limitation.
@see https://github.com/microsoft/TypeScript/issues/29732

@group type-fest
*/
export type HasMultipleCallSignatures<T extends (...arguments_: any[]) => unknown> = T extends {
	(...arguments_: infer A): unknown
	(...arguments_: infer B): unknown
} ? B extends A ? A extends B ? false : true : true : false;
/**
Returns a boolean for whether the given `boolean` is not `false`.

@group type-fest
*/
export type IsNotFalse<T extends boolean> = [T] extends [false] ? false : true;
/**
Returns a boolean for whether the given type is primitive value or primitive type.

@example
```
IsPrimitive<'string'>
//=> true

IsPrimitive<string>
//=> true

IsPrimitive<Object>
//=> false
```

@group type-fest
*/
export type IsPrimitive<T> = [T] extends [Primitive] ? true : false;
/**
Returns a boolean for whether A is false.

@example
```
Not<true>;
//=> false

Not<false>;
//=> true
```

@group type-fest
*/
export type Not<A extends boolean> = A extends true ? false : A extends false ? true : never;
/**
Returns a boolean for whether the given type is a union type.

@example
```
type A = IsUnion<string | number>;
//=> true

type B = IsUnion<string>;
//=> false
```

@group type-fest
*/
export type IsUnion<T> = InternalIsUnion<T>;
/**
The actual implementation of `IsUnion`.
*/
type InternalIsUnion<
	T,
	U = T
> = (IsNever<T> extends true ? false : T extends any ? [U] extends [T] ? false : true : never) extends infer Result ? boolean extends Result ? true : Result : never;
export {};