13 lines
325 B
JavaScript
13 lines
325 B
JavaScript
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import React from "react";
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function F(props: { foo: string }) {}
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<F />; // error: missing `foo`
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<F foo={0} />; // error: number ~> string
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<F foo="" />; // ok
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// props subtyping is property-wise covariant
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function G(props: { foo: string|numner }) {}
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<G foo="" />; // ok
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var Z = 0;
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<Z />; // error, expected React component
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