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# es/no-optional-catch-binding
> disallow optional `catch` binding
- ✅ The following configurations enable this rule: `plugin:es/no-new-in-es2019`, `plugin:es/restrict-to-es3`, `plugin:es/restrict-to-es5`, `plugin:es/restrict-to-es2015`, `plugin:es/restrict-to-es2016`, `plugin:es/restrict-to-es2017`, and `plugin:es/restrict-to-es2018`
This rule reports ES2019 optional `catch` binding as errors.
## Examples
⛔ Examples of **incorrect** code for this rule:
<eslint-playground type="bad" code="/*eslint es/no-optional-catch-binding: error */
try {
f()
} catch {
g()
}
" />
## 📚 References
- [Rule source](https://github.com/mysticatea/eslint-plugin-es/blob/v4.1.0/lib/rules/no-optional-catch-binding.js)
- [Test source](https://github.com/mysticatea/eslint-plugin-es/blob/v4.1.0/tests/lib/rules/no-optional-catch-binding.js)
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