1
0
mirror of https://github.com/S2-/minifyfromhtml.git synced 2025-08-02 12:00:03 +02:00
Files
minifyfromhtml/node_modules/babel-plugin-transform-remove-undefined
2018-05-05 13:54:07 +02:00
..
2018-05-05 13:54:07 +02:00
2018-05-05 13:54:07 +02:00
2018-05-05 13:54:07 +02:00

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

In

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

Usage

.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)