babel-plugin-transform-undefined-to-void

Some JavaScript implementations allow undefined to be overwritten, this may lead to peculiar bugs that are extremely hard to track down.

This plugin transforms undefined into void 0 which returns undefined regardless of if it's been reassigned.

Example

foo === undefined;

Out

foo === void 0;

Installation

npm install babel-plugin-transform-undefined-to-void --save-dev

Usage

Via `.babelrc` (Recommended)

.babelrc

{
  "plugins": ["transform-undefined-to-void"]
}

Via CLI

babel --plugins transform-undefined-to-void script.js

Via Node API

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

Current Tags

6.10.0-alpha.9 ... canary (6 years ago)
6.9.4 ... latest (7 years ago)
0.0.1 ... lerna-temp (8 years ago)
0.0.3 ... prerelease (8 years ago)

89 Versions

6.10.0-alpha.9 ... 6 years ago
6.10.0-alpha.3cc09dcf ... 6 years ago
6.10.0-alpha.beb87b9a ... 6 years ago
6.10.0-alpha.5a128fd5 ... 6 years ago
6.10.0-alpha.2ed85317 ... 6 years ago
6.10.0-alpha.a24dd066 ... 6 years ago
6.10.0-alpha.2e0de171 ... 6 years ago
6.10.0-alpha.89fc69da ... 6 years ago
6.10.0-alpha.41ef96a2 ... 6 years ago
6.10.0-alpha.a28b6b00 ... 6 years ago
6.10.0-alpha.2ec8ff72 ... 6 years ago
6.10.0-alpha.01eac1c3 ... 6 years ago
6.10.0-alpha.5dbc73f7 ... 6 years ago
6.10.0-alpha.830ce3f1 ... 6 years ago
6.10.0-alpha.9e447f6d ... 6 years ago
6.10.0-alpha.3b1a8f05 ... 6 years ago
6.10.0-alpha.367cc048 ... 6 years ago
6.10.0-alpha.36b27d42 ... 6 years ago
6.10.0-alpha.7ba5821f ... 6 years ago
6.10.0-alpha.7195fa98 ... 6 years ago
6.10.0-alpha.1cb46b73 ... 6 years ago
6.10.0-alpha.85c9b6d8 ... 7 years ago
6.10.0-alpha.6889f45d ... 7 years ago
6.10.0-alpha.91ed3622 ... 7 years ago
6.9.4 ... 7 years ago
6.10.0-alpha.b5637c57 ... 7 years ago
6.9.3 ... 7 years ago
6.10.0-alpha.540d75e7 ... 7 years ago
6.10.0-alpha.bce578e2 ... 7 years ago
6.10.0-alpha.18dcfe13 ... 7 years ago
6.10.0-alpha.9939bca9 ... 7 years ago
6.10.0-alpha.5f601890 ... 7 years ago
6.10.0-alpha.34c3efe9 ... 7 years ago
6.10.0-alpha.9e986477 ... 7 years ago
6.10.0-alpha.e86a44f1 ... 7 years ago
6.9.2 ... 7 years ago
6.10.0-alpha.e9f96ffe ... 7 years ago
6.10.0-alpha.8b905991 ... 7 years ago
6.10.0-alpha.b4285271 ... 7 years ago
6.10.0-alpha.7b176463 ... 7 years ago
6.10.0-alpha.55276695 ... 7 years ago
6.10.0-alpha.b5bafaeb ... 7 years ago
6.10.0-alpha.72092d20 ... 7 years ago
6.9.1 ... 7 years ago
6.10.0-alpha.caaefb4c ... 7 years ago
6.10.0-alpha.f95869d4 ... 7 years ago
6.10.0-alpha.12994a48 ... 7 years ago
6.10.0-alpha.4b14df35 ... 7 years ago
6.10.0-alpha.6546ad11 ... 7 years ago
6.10.0-alpha.15ca1f11 ... 7 years ago
6.9.0 ... 7 years ago
6.9.0-alpha.4143a25b ... 7 years ago
6.9.0-alpha.71b0b884 ... 7 years ago
6.9.0-alpha.6ceffb8d ... 7 years ago
6.9.0-alpha.636ae276 ... 7 years ago
6.9.0-alpha.ab81368f ... 7 years ago
6.9.0-alpha.ac576234 ... 7 years ago
6.9.0-alpha.879f25ec ... 7 years ago
6.9.0-alpha.5ee3078e ... 7 years ago
6.9.0-alpha.8857f145 ... 7 years ago
6.9.0-alpha.169f8743 ... 7 years ago
6.9.0-alpha.6ae655c0 ... 7 years ago
6.9.0-alpha.d9c99d3f ... 7 years ago
6.9.0-alpha.a351eeed ... 7 years ago
6.9.0-alpha.cf9a0da2 ... 7 years ago
6.9.0-alpha.e6a189cd ... 7 years ago
6.9.0-alpha.670b24ec ... 7 years ago
6.9.0-alpha.7f4dc3d4 ... 7 years ago
6.9.0-alpha.033d9ab6 ... 7 years ago
6.9.0-alpha.37064b40 ... 7 years ago
6.9.0-alpha.9a74dfd1 ... 7 years ago
6.9.0-alpha.a7421897 ... 7 years ago
6.9.0-alpha.da60c6b8 ... 7 years ago
6.8.3 ... 7 years ago
6.8.2 ... 7 years ago
6.8.1 ... 7 years ago
0.0.3 ... 8 years ago
0.0.1 ... 8 years ago
6.8.0 ... 9 years ago
6.5.0-1 ... 9 years ago
6.5.0 ... 9 years ago
6.3.13 ... 9 years ago
6.2.4 ... 9 years ago
6.1.18 ... 9 years ago
6.1.17 ... 9 years ago
6.1.4 ... 9 years ago
6.0.18 ... 9 years ago
6.0.14 ... 9 years ago
6.0.2 ... 9 years ago