NOTE: This plugin is included in @babel/preset-env, in ES2019

Examples?

JavaScript

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

JavaScript

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

Installation?

• npm
• Yarn
• pnpm

pnpm add --save-dev @babel/plugin-proposal-optional-catch-binding

Usage?

With a configuration file (Recommended)?

babel.config.json

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

Via CLI?

Shell

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

Via Node API?

JavaScript

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

References?

• Proposal: Optional Catch Binding for ECMAScript