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Array subscript access returns non-optional #14563

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iv-mexx opened this issue Mar 9, 2017 · 1 comment
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Array subscript access returns non-optional #14563

iv-mexx opened this issue Mar 9, 2017 · 1 comment
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@iv-mexx
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iv-mexx commented Mar 9, 2017

TypeScript Version: 2.2.1

Code

const array: number[] = []
const maybeNumber = array[10]

Expected behavior:

maybeNumber is inferred as optional number | undefined

Actual behavior:

maybeNumber is inferred as non-optional number

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@RyanCavanaugh RyanCavanaugh added the Duplicate An existing issue was already created label Mar 9, 2017
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Duplicate #9235

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