Remove exception value in try..catch, if it's not used

[shoonia]

Feature request

Remove exception value in try..catch, if it's not used.

function isValidJSON(text) {
  try {
    JSON.parse(text);
    return true;
-  } catch (error) {
+  } catch {
    return false;
  }
}

[ehoogeveen-medweb]

Good idea :) Optional catch binding is an ES2019 feature, so would need to be gated behind ecma: 2019 or higher:
https://compat-table.github.io/compat-table/es2016plus/
https://caniuse.com/mdn-javascript_statements_try_catch_optional_catch_binding

[fabiosantoscode]

The ecma option is poorly understood, so I believe it could catch some people by surprise. I think a new option is needed, defaulted to false.