[easy] run typechecking on CI (#954)

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Keyan Zhang 2020-03-14 21:12:39 -07:00 committed by GitHub
parent 3f8144ef85
commit 05af9f04ed
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@ -41,6 +41,7 @@ it("clones arrow element", () => {
assertCloneObjects(element, copy);
// @ts-ignore
expect(copy.__proto__).toEqual({ hello: "world" });
expect(copy.hasOwnProperty("hello")).toBe(false);