/**
 * Assertion function with fixable stack for better error messages
 */
export declare function assert(cond: boolean, message: string, offsetStack?: number): void;
/**
 * Given object is null or undefined
 */
export declare function isNil(ob: any): ob is null | undefined;
/**
 * Given object is NOT null or undefined
 */
export declare function notNil<T>(ob: T): ob is Exclude<T, undefined | null>;
/**
 * Asserts that given object is not false, null or undefined
 */
export declare function assertNotNil<T>(ob: T, msg?: string): asserts ob is Exclude<T, undefined | null>;
export declare function is<T>(ob: any, value: T): ob is T;
export declare function assertIs<T>(ob: any, value: T, msg?: string): asserts ob is T;
export declare function assertNotBrowser(): void;
/**
 * Asserts that the given value is not any type
 */
export declare function assertNotAny<T>(value: NotAny<T>): void;
declare type IsAny<T> = unknown extends T ? (T extends {} ? T : never) : never;
declare type NotAny<T> = T extends IsAny<T> ? never : T;
/**
 * Assert that the type of the `value` is assignable to the type T
 */
export declare function assertType<T>(value: T): void;
export {};
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