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Error ts(1345) when using JavaScript logical operator as statement #31604

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JipingWang opened this issue May 26, 2019 · 1 comment
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Error ts(1345) when using JavaScript logical operator as statement #31604

JipingWang opened this issue May 26, 2019 · 1 comment
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@JipingWang
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TypeScript Version: 3.4.5

Search Terms: operator

Code

<form className={classes.form} onSubmit={e => e.preventDefault() || false}>

Expected behavior:
valid, no error throws.

Actual behavior:
Error ts(1345): An expression of type 'void' cannot be tested for truthiness.
@j-oliveras
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This is working as intended: #26262, PR #26234. Duplicate of #28248.

@RyanCavanaugh RyanCavanaugh added the Duplicate An existing issue was already created label May 28, 2019
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@RyanCavanaugh @JipingWang @j-oliveras