13 lines
323 B
JavaScript
13 lines
323 B
JavaScript
// @flow
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function foo(x: ?string): $NonMaybeType<?string> {
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if (x != null) { return x; }
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else return 0; // this should be an error
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}
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//(foo(): string); // should not be necessary to expose the error above
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(0: $NonMaybeType<null>); // error
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(0: $NonMaybeType<?number>); // ok
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(0: $NonMaybeType<number | null>); // ok
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