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)

Current Tags

0.5.0-alpha.9 ... canary (6 years ago)
0.5.0 ... latest (6 years ago)
0.0.3 ... prerelease (8 years ago)

81 Versions

0.5.0 ... 6 years ago
0.5.0-alpha.9 ... 6 years ago
0.5.0-alpha.3cc09dcf ... 6 years ago
0.5.0-alpha.beb87b9a ... 6 years ago
0.5.0-alpha.5a128fd5 ... 6 years ago
0.5.0-alpha.2ed85317 ... 6 years ago
0.5.0-alpha.a24dd066 ... 7 years ago
0.5.0-alpha.2e0de171 ... 7 years ago
0.5.0-alpha.89fc69da ... 7 years ago
0.5.0-alpha.a28b6b00 ... 7 years ago
0.5.0-alpha.2ec8ff72 ... 7 years ago
0.5.0-alpha.01eac1c3 ... 7 years ago
0.5.0-alpha.5dbc73f7 ... 7 years ago
0.5.0-alpha.830ce3f1 ... 7 years ago
0.5.0-alpha.9e447f6d ... 7 years ago
0.5.0-alpha.3b1a8f05 ... 7 years ago
0.5.0-alpha.367cc048 ... 7 years ago
0.5.0-alpha.36b27d42 ... 7 years ago
0.5.0-alpha.7ba5821f ... 7 years ago
0.5.0-alpha.7195fa98 ... 7 years ago
0.5.0-alpha.1cb46b73 ... 7 years ago
0.5.0-alpha.85c9b6d8 ... 7 years ago
0.5.0-alpha.6889f45d ... 7 years ago
0.5.0-alpha.91ed3622 ... 7 years ago
0.4.3 ... 7 years ago
0.5.0-alpha.b5637c57 ... 7 years ago
0.4.2 ... 7 years ago
0.5.0-alpha.540d75e7 ... 7 years ago
0.5.0-alpha.bce578e2 ... 7 years ago
0.5.0-alpha.18dcfe13 ... 7 years ago
0.5.0-alpha.9939bca9 ... 7 years ago
0.5.0-alpha.5f601890 ... 7 years ago
0.5.0-alpha.34c3efe9 ... 7 years ago
0.5.0-alpha.9e986477 ... 7 years ago
0.5.0-alpha.e86a44f1 ... 7 years ago
0.4.1 ... 7 years ago
0.5.0-alpha.e9f96ffe ... 7 years ago
0.5.0-alpha.8b905991 ... 7 years ago
0.5.0-alpha.b4285271 ... 7 years ago
0.5.0-alpha.7b176463 ... 7 years ago
0.5.0-alpha.55276695 ... 7 years ago
0.5.0-alpha.b5bafaeb ... 7 years ago
0.5.0-alpha.72092d20 ... 7 years ago
0.4.0 ... 7 years ago
0.4.0-alpha.caaefb4c ... 7 years ago
0.4.0-alpha.f95869d4 ... 7 years ago
0.4.0-alpha.12994a48 ... 7 years ago
0.4.0-alpha.4b14df35 ... 7 years ago
0.4.0-alpha.6546ad11 ... 7 years ago
0.4.0-alpha.15ca1f11 ... 7 years ago
0.3.0 ... 7 years ago
0.3.0-alpha.4143a25b ... 7 years ago
0.3.0-alpha.71b0b884 ... 7 years ago
0.3.0-alpha.6ceffb8d ... 7 years ago
0.3.0-alpha.636ae276 ... 7 years ago
0.3.0-alpha.ab81368f ... 7 years ago
0.3.0-alpha.ac576234 ... 7 years ago
0.3.0-alpha.879f25ec ... 7 years ago
0.3.0-alpha.5ee3078e ... 7 years ago
0.3.0-alpha.8857f145 ... 7 years ago
0.3.0-alpha.169f8743 ... 7 years ago
0.3.0-alpha.6ae655c0 ... 7 years ago
0.3.0-alpha.d9c99d3f ... 7 years ago
0.3.0-alpha.a351eeed ... 7 years ago
0.3.0-alpha.cf9a0da2 ... 7 years ago
0.3.0-alpha.e6a189cd ... 7 years ago
0.3.0-alpha.670b24ec ... 7 years ago
0.3.0-alpha.7f4dc3d4 ... 7 years ago
0.3.0-alpha.033d9ab6 ... 7 years ago
0.3.0-alpha.37064b40 ... 7 years ago
0.3.0-alpha.9a74dfd1 ... 7 years ago
0.3.0-alpha.a7421897 ... 7 years ago
0.3.0-alpha.da60c6b8 ... 7 years ago
0.2.0 ... 7 years ago
0.1.2 ... 8 years ago
0.1.1 ... 8 years ago
0.1.0 ... 8 years ago
0.0.5 ... 8 years ago
0.0.4 ... 8 years ago
0.0.3 ... 8 years ago
0.0.1 ... 8 years ago

babel-plugin-transform-remove-undefined

Example

Installation

Usage

Via .babelrc (Recommended)

Via CLI

Via Node API

Options

Current Tags

81 Versions

Via `.babelrc` (Recommended)