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

信息

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

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

Yarn

yarn add --dev @babel/plugin-transform-optional-catch-binding

pnpm

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

Usage

With a configuration file (Recommended)

babel.config.json

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

Via CLI

Shell

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

Via Node API

JavaScript

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

References

• Proposal: Optional Catch Binding for ECMAScript