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babel-plugin-transform-remove-undefined
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For variable assignments, this removes rvals that evaluate to undefined
(var
s in functions only).
For functions, this removes return arguments that evaluate to undefined
.
In
let a = void 0;
function foo() {
var b = undefined;
return undefined;
}
Out
let a;
function foo() {
var b;
return;
}
npm install babel-plugin-transform-remove-undefined --save-dev
.babelrc
(Recommended).babelrc
{
"plugins": ["babel-plugin-transform-remove-undefined"]
}
babel --plugins babel-plugin-transform-remove-undefined script.js
require("@babel/core").transform("code", {
plugins: ["babel-plugin-transform-remove-undefined"]
});
tdz
- Detect usages before declaration/initialization in let/const(throws) and var(void 0)FAQs
This removes rvals that are equivalent to undefined wherever possible
The npm package babel-plugin-transform-remove-undefined receives a total of 345,546 weekly downloads. As such, babel-plugin-transform-remove-undefined popularity was classified as popular.
We found that babel-plugin-transform-remove-undefined demonstrated a not healthy version release cadence and project activity because the last version was released a year ago. It has 7 open source maintainers collaborating on the project.
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