index.d.ts

/**
 * Performs the specified action for each element in an array.
 * @param arr Array of items to iterate over
 * @param callbackfn  A function that accepts up to three arguments. forEach calls the callbackfn function one time for each element in the array.
 * @param thisArg  An object to which the this keyword can refer in the callbackfn function. If thisArg is omitted, undefined is used as the this value.
 */
declare function forEach<T>(arr: T[], callbackfn: (value: T, index: number, array: readonly T[]) => void): void;
declare function forEach<T, U>(
    arr: T[],
    callbackfn: (this: U, value: T, index: number, array: readonly T[]) => void,
    thisArg: U,
): void;

/**
 * Performs the specified action for each element in an array.
 * @param arr Nodelist of items to iterate over
 * @param callbackfn  A function that accepts up to three arguments. forEach calls the callbackfn function one time for each element in the array.
 * @param thisArg  An object to which the this keyword can refer in the callbackfn function. If thisArg is omitted, undefined is used as the this value.
 */
declare function forEach<T extends Node>(
    arr: NodeListOf<T>,
    callbackfn: (value: T, index: number, array: readonly T[]) => void,
): void;
declare function forEach<T extends Node, U>(
    arr: NodeListOf<T>,
    callbackfn: (this: U, value: T, index: number, array: readonly T[]) => void,
    thisArg: U,
): void;
export = forEach;