Babel-plugin-transform-remove-undefined NPM

babel-plugin-transform-remove-undefined

For variable assignments, this removes rvals that evaluate to undefined (vars in functions only). For functions, this removes return arguments that evaluate to undefined.

Example

let a = void 0;
function foo() {
  var b = undefined;
  return undefined;
}

Out

let a;
function foo() {
  var b;
  return;
}

Installation

npm install babel-plugin-transform-remove-undefined --save-dev

Usage

Via `.babelrc` (Recommended)

.babelrc

{
  "plugins": ["babel-plugin-transform-remove-undefined"]
}

Via CLI

babel --plugins babel-plugin-transform-remove-undefined script.js

Via Node API

require("@babel/core").transform("code", {
  plugins: ["babel-plugin-transform-remove-undefined"]
});

Options

tdz - Detect usages before declaration/initialization in let/const(throws) and var(void 0)

babel-plugin

babel-helper-evaluate-path

babel-preset-minify @everything-registry/sub-chunk-1205 @kirrosh/pts sequelcomponent @moezx/meting @jlallement/cookieconsent prepublish-lib @pnidem/babel-preset-babili freemamba @hazyflame/vue-jitsi-meet @ibrahimcesar/middy-idempotent @infinitebrahmanuniverse/nolb-babel-plugin-t npm-all-packages @greminder/bootstrap-material-design babel-preset-optimise babel-preset-babili better-babel-cli u-library @zalastax/nolb-babel-plugin-t

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