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Add test

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This commit is contained in:
Anders Hejlsberg 2016-08-01 09:49:27 -07:00
parent fc85bc5a8a
commit 47f6bb2e26
1 changed files with 19 additions and 0 deletions
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tests/cases/compiler/bestChoiceType.ts Normal file
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// @strictNullChecks: true
// Repro from #10041
(''.match(/ /) || []).map(s => s.toLowerCase());
// Similar cases
function f1() {
let x = ''.match(/ /);
let y = x || [];
let z = y.map(s => s.toLowerCase());
}
function f2() {
let x = ''.match(/ /);
let y = x ? x : [];
let z = y.map(s => s.toLowerCase());
}