16 lines
538 B
JavaScript
16 lines
538 B
JavaScript
// @flow
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declare var arrOfObjs: Array<{ foo: string }>;
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declare var roArrOfObjs: $ReadOnlyArray<{foo: string}>;
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declare var tup: [{foo: string}, {bar: number}];
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(Object.assign({}, ...arrOfObjs): { foo: number}); // Error: string ~> number
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(Object.assign({}, ...roArrOfObjs): { foo: number}); // Error: string ~> number
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(Object.assign({}, ...tup): { foo: string, bar: boolean}); // Error: number ~> boolean
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(Object.assign(
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{},
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...[{a: 1}, {b: 'foo'}],
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...[{c: true}],
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): {a: number, b: true, c: boolean}); // Error: 'foo' => true
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