immutable-json-patch/lib/types/utils.d.ts

Immutable JSON patch with support for reverting operations

/**
 * Test deep equality of two JSON values, objects, or arrays
 */
export declare function isEqual<T, U>(a: T, b: U): boolean;
/**
 * Test whether two values are strictly equal
 */
export declare function strictEqual(a: unknown, b: unknown): boolean;
/**
 * Get all but the last items from an array
 */
export declare function initial<T>(array: Array<T>): Array<T>;
/**
 * Get the last item from an array
 */
export declare function last<T>(array: Array<T>): T | undefined;
/**
 * Test whether array1 starts with array2
 * @param array1
 * @param array2
 * @param [isEqual] Optional function to check equality
 */
export declare function startsWith<T>(array1: Array<T>, array2: Array<T>, isEqual?: typeof strictEqual): boolean;
/**
 * Test whether a value is an Object or an Array (and not a primitive JSON value)
 */
export declare function isObjectOrArray(value: unknown): boolean;
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