/** A type guard function that narrows `unknown` to `T` */
export type Guard<T> = (value: unknown) => value is T;
/** Extract the guarded type from a Guard */
export type GuardType<G> = G extends Guard<infer T> ? T : never;
/** Make all properties required and non-nullable */
export type RequiredDeep<T> = {
    [K in keyof T]-?: NonNullable<T[K]>;
};
/** A value that could be null or undefined */
export type Nullish = null | undefined;
/** A value that is neither null nor undefined */
export type NonNullish<T> = Exclude<T, Nullish>;
/** Primitive JavaScript types */
export type Primitive = string | number | boolean | bigint | symbol | null | undefined;
/** A plain object with string keys */
export type PlainObject = Record<string, unknown>;
/** Function type shorthand */
export type AnyFunction = (...args: unknown[]) => unknown;
/** A readonly tuple type */
export type ReadonlyTuple<T extends readonly unknown[]> = readonly [...T];
/** Branded type for nominal typing */
export type Brand<T, B extends string> = T & {
    readonly __brand: B;
};
/** Infer the shape from a guard record */
export type ShapeGuardType<T extends Record<string, Guard<unknown>>> = {
    [K in keyof T]: GuardType<T[K]>;
};
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