import { ObjectWithImmutables, Immutable } from './types';
/**
 * Checks that the current value is exactly the same as the other previous one. Accepts value of type
 * function, number, boolean, string, undefined or null
 */
export declare const strictEqualityCheck: <T extends Function | Immutable>() => (current: T) => boolean;
/**
 * Equality check that verifies the values of each key of an object.
 * Each value must be a primitive (boolean, number or string)
 *
 * For null or undefined values see nullableShallowObjectEqualityCheck
 */
export declare const shallowObjectEqualityCheck: () => (current: ObjectWithImmutables) => boolean;
/**
 * Does a shallow object equality check for each element in an array
 *
 * For null or undefined values see nullableShallowObjectArrayEqualityCheck
 */
export declare const shallowObjectArrayEqualityCheck: () => (current: ObjectWithImmutables[]) => boolean;
/**
 * Shallow equality check of primitives in an array
 *
 * For null or undefined values see nullableShallowArrayEqualityCheck
 */
export declare const shallowArrayEqualityCheck: () => (current: Immutable[]) => boolean;
/**
 * Equality check that verifies the values of each key of an object.
 * Each value must be a primitive (boolean, number or string)
 *
 * Supports nullable values
 */
export declare const nullableShallowObjectEqualityCheck: () => (value: ObjectWithImmutables | null | undefined) => boolean;
/**
 * Does a shallow object equality check for each element in an array
 *
 * Supports nullable values
 */
export declare const nullableShallowObjectArrayEqualityCheck: () => (value: ObjectWithImmutables[] | null | undefined) => boolean;
/**
 * Shallow equality check of primitives in an array
 *
 * Supports nullable values
 */
export declare const nullableShallowArrayEqualityCheck: () => (value: Immutable[] | null | undefined) => boolean;
/**
 * The default equality check that assumes data can be mutated.
 * It is used internally by default, so there is no need to provide it.
 */
export declare const defaultEqualityCheck: <T>() => (current: T) => boolean;