API reference › @evolu/common › Types › Simplify

type Simplify<T> = { [K in keyof T]: T[K] } & {};

Defined in: packages/common/src/Types.ts:347

Simplify an intersection type into a single mapped type.

This utility forces TypeScript to "flatten" an intersection type into a single object type so that tooltips and error messages are easier to read.

Flattening an intersection

import { assertType, type Simplify } from "@evolu/common";

type A = { a: string } & { b: number };
type B = Simplify<A>;

assertType<
  {
    a: string;
    b: number;
  },
  B
>();