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Fix type guard for isWhitespaceString and isEmptyStringOrWhitespace (#207)

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Martin Eneqvist 2024-06-26 14:31:56 +02:00 • committed by GitHub
parent 8cbcaee674
commit 25a376875d
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3 changed files with 14 additions and 4 deletions
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7
test/test.ts
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@ -1793,6 +1793,13 @@ test('is.emptyStringOrWhitespace', t => {
t.throws(() => {
assert.emptyStringOrWhitespace('unicorn');
});
let value = 'test'; // eslint-disable-line prefer-const -- can't use `const` here because then it will be inferred as `never` in the `if` block
if (is.emptyStringOrWhitespace(value)) {
value.charAt(0); // Should be inferred as `'' | Whitespace` and not `never`
} else {
value.charAt(0); // Should be inferred as `string` and not `never`
}
});
test('is.nonEmptyString', t => {