babel-plugin-transform-minify-catch-param

Babel plugin that minifies unused catch clause parameter names in JavaScript/TypeScript to reduce bundle size.

What does it do?

Removes the parameter in catch clauses if it is not used inside the block.

Before:

try {
  // ...
} catch (error) {} // error is not used

After:

try {
  // ...
} catch {}

npm i -D babel-plugin-transform-minify-catch-param
#or
yarn add -D babel-plugin-transform-minify-catch-param

Add to your Babel config:

See the official Babel documentation for more details: https://babeljs.io/docs/en/configuration

{
  "plugins": [
    "babel-plugin-transform-minify-catch-param"
  ]
}