Return a type predicate function that returns true if the type of x is IntersectionOf<T>.

To enhance performance, users are advised to cache the return value of this function and mitigate the creation cost.

import { is } from "@core/unknownutil";

const isMyType = is.IntersectionOf([
  is.ObjectOf({ a: is.Number }),
  is.ObjectOf({ b: is.String }),
]);
const a: unknown = { a: 0, b: "a" };
if (isMyType(a)) {
  // a is narrowed to { a: number } & { b: string }
  const _: { a: number } & { b: string } = a;
}

Depending on the version of TypeScript and how values are provided, it may be necessary to add as const to the array used as preds. If a type error occurs, try adding as const as follows:

import { is } from "@core/unknownutil";

const preds = [
  is.ObjectOf({ a: is.Number }),
  is.ObjectOf({ b: is.String }),
] as const
const isMyType = is.IntersectionOf(preds);
const a: unknown = { a: 0, b: "a" };
if (isMyType(a)) {
  // a is narrowed to { a: number } & { b: string }
  const _: { a: number } & { b: string } = a;
}