@voxpelli/typed-utils/lib/types/misc-types.d.ts

My personal (type-enabled) utils / helpers

// Borrowed from https://github.com/sindresorhus/type-fest

declare const emptyObjectSymbol: unique symbol;
type EmptyObject = { [emptyObjectSymbol]?: never };
export type IsEmptyObject<T> = T extends EmptyObject ? true : false;