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22 lines
226 B
TypeScript
22 lines
226 B
TypeScript
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interface Boolean {
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doStuff(): string;
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}
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interface NotBoolean {
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doStuff(): string;
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}
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var x = true;
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var a: Boolean;
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var b: NotBoolean;
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a = x;
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a = b;
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b = a;
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b = x;
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x = a; // expected error
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x = b; // expected error
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