@babel/plugin-proposal-optional-catch-binding

Optional catch binding enables the catch block to execute whether or not an argument is passed to the catch statement (CatchClause).

Examples

try {
  throw 0;
} catch {
  doSomethingWhichDoesntCareAboutTheValueThrown();
}

try {
  throw 0;
} catch {
  doSomethingWhichDoesntCareAboutTheValueThrown();
} finally {
  doSomeCleanup();
}

npm install --save-dev @babel/plugin-proposal-optional-catch-binding

.babelrc

{
  "plugins": ["@babel/plugin-proposal-optional-catch-binding"]
}

babel --plugins @babel/plugin-proposal-optional-catch-binding script.js

require("@babel/core").transform("code", {
  plugins: ["@babel/plugin-proposal-optional-catch-binding"]
});