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docs: add 'when not to use it' section in no-duplicate-case docs #15563

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merged 1 commit into from Feb 2, 2022
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docs: add 'when not to use it' section in no-duplicate-case docs #15563

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15 changes: 15 additions & 0 deletions docs/rules/no-duplicate-case.md
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Expand Up @@ -91,3 +91,18 @@ switch (a) {
break;
}
```

## When Not To Use It

In rare cases where identical test expressions in `case` clauses produce different values, which necessarily means that the expressions are causing and relying on side effects, you will have to disable this rule.

```js
switch (a) {
case i++:
foo();
break;
case i++: // eslint-disable-line no-duplicate-case
bar();
break;
}
```