babel/codemods/babel-plugin-codemod-optional-catch-binding
Huáng Jùnliàng 3fad7eab9b
Use Yarn 2 (#11962)
* chore: use yarn 2

* chore: remove redundant yarn locks

* chore: remove publishEslintPkg

* chore: remove redundant make bootstrap

* Update .yarnrc.yml

Co-authored-by: Kristoffer K. <merceyz@users.noreply.github.com>

* chore: use workspace protocol for eslint packages in the root

Co-Authored-By: merceyz <merceyz@users.noreply.github.com>

* chore: pin caniuse-lite versions

Testcases in packages/babel-preset-env/test/fixtures/debug/browserslists-defaults-not-ie
depends on specific caniuse-lite versions. We pinned the version here
so we don't have to deal with fixture different in e2e-tests
where all deps will be updated and tested.

* chore: resolve yarn install warnings

* chore: update yarn cache path on circle/travis

* chore: add yarn deduplicate plugin

* chore: deduplicate lock files

* chore: move devDependencies to leaf packages

* chore: remove @yarnpkg/plugin-constraints

* chore: remove unused dedupe options

* test: fix unwanted self reference

* chore: remove output-file-sync dependency

* chore: update browserify to 16.5.2

Co-authored-by: Kristoffer K. <merceyz@users.noreply.github.com>
2020-08-25 14:37:30 -04:00
..
2020-06-07 22:21:33 +02:00
2017-09-19 16:04:11 -04:00
2020-08-25 14:37:30 -04:00

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

If the argument bound to the catch block is not referenced in the catch block, that argument and the catch binding is removed.

Examples

try {
  throw 0;
} catch (err) {
  console.log("it failed, but this code executes");
}

Is transformed to:

try {
  throw 0;
} catch {
  console.log("it failed, but this code executes");
}

Installation

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

Usage

.babelrc

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

Via CLI

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

Via Node API

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

References

This codemod updates your source code in line with the following proposal: