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TypeScript Version: 3.8.3
Search Terms: Boolean type narrowing
Code
const x: {test: string} | null | undefined = something() // this works if (!!x) { console.log(x.test) } // this can not work if (Boolean(x)) { console.log(x.test) }
Expected behavior: Expression inside the second if statement should work.
Actual behavior: The second if statement gives the following error:
TS2533: Object is possibly 'null' or 'undefined'.
Related Issues: None
The text was updated successfully, but these errors were encountered:
Duplicate of #16655
Unfortunately changing Boolean declaration breaks cases with filter etc. See #29955
Boolean
filter
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TypeScript Version: 3.8.3
Search Terms: Boolean type narrowing
Code
Expected behavior:
Expression inside the second if statement should work.
Actual behavior:
The second if statement gives the following error:
Related Issues: None
The text was updated successfully, but these errors were encountered: