Accept baselines
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tests/cases/compiler/typePredicateStructuralMatch.ts(17,12): error TS2322: Type 'Result[] | { data: Result[]; }' is not assignable to type 'Result[]'.
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Type '{ data: Result[]; }' is not assignable to type 'Result[]'.
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Property 'length' is missing in type '{ data: Result[]; }'.
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==== tests/cases/compiler/typePredicateStructuralMatch.ts (1 errors) ====
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// Repro from #12235
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getResults1([]);
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getResults1({data: []});
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getResults2([]);
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getResults2({data: []});
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type Result = { value: string };
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type Results = Result[];
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function isResponseInData<T>(value: T | { data: T}): value is { data: T } {
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return value.hasOwnProperty('data');
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}
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function getResults1(value: Results | { data: Results }): Results {
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return isResponseInData(value) ? value.data : value;
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~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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!!! error TS2322: Type 'Result[] | { data: Result[]; }' is not assignable to type 'Result[]'.
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!!! error TS2322: Type '{ data: Result[]; }' is not assignable to type 'Result[]'.
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!!! error TS2322: Property 'length' is missing in type '{ data: Result[]; }'.
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}
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function isPlainResponse<T>(value: T | { data: T}): value is T {
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return !value.hasOwnProperty('data');
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}
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function getResults2(value: Results | { data: Results }): Results {
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return isPlainResponse(value) ? value : value.data;
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}
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46
tests/baselines/reference/typePredicateStructuralMatch.js
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46
tests/baselines/reference/typePredicateStructuralMatch.js
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//// [typePredicateStructuralMatch.ts]
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// Repro from #12235
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getResults1([]);
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getResults1({data: []});
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getResults2([]);
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getResults2({data: []});
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type Result = { value: string };
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type Results = Result[];
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function isResponseInData<T>(value: T | { data: T}): value is { data: T } {
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return value.hasOwnProperty('data');
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}
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function getResults1(value: Results | { data: Results }): Results {
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return isResponseInData(value) ? value.data : value;
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}
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function isPlainResponse<T>(value: T | { data: T}): value is T {
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return !value.hasOwnProperty('data');
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}
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function getResults2(value: Results | { data: Results }): Results {
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return isPlainResponse(value) ? value : value.data;
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}
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//// [typePredicateStructuralMatch.js]
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// Repro from #12235
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getResults1([]);
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getResults1({ data: [] });
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getResults2([]);
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getResults2({ data: [] });
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function isResponseInData(value) {
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return value.hasOwnProperty('data');
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}
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function getResults1(value) {
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return isResponseInData(value) ? value.data : value;
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}
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function isPlainResponse(value) {
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return !value.hasOwnProperty('data');
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}
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function getResults2(value) {
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return isPlainResponse(value) ? value : value.data;
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}
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