import { expect, it } from "vitest";
import pickBy from "./pickBy.js";
import u from "./index.js";
it("can pick a key", () => {
    const result = u({ foo: pickBy((v, k) => k === "bar") })({
        foo: { bar: 7, baz: 8 },
    });
    expect(result).to.eql({ foo: { bar: 7 } });
});
it("freezes the result", () => {
    expect(Object.isFrozen(pickBy({}, () => true))).to.be.true;
});
it("doesn't change the obj if nothing is modified", () => {
    const orig = { a: 1 };
    const result = pickBy(() => true)(orig);
    expect(result).to.be.equal(orig);
});
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