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@putout/plugin-remove-unused-variables
Advanced tools
Readme
A variable is a container for a value, like a number we might use in a sum, or a string that we might use as part of a sentence.
(c) MDN
🐊Putout plugin adds ability to find and remove the variables that are declared, but:
That is unused variables. Most likely it is a leftovers due to incomplete transforming of the code. Such variables take up space and gives no value so they must be removed.
☝️Remember, when you writing a transform you can skip all parts related to removing unused variables and just reuse current plugin it will make your code simpler and less error prone.
☝️No, you cannot just look at referenced
and constant
fields to determine if you can remove variable and here is why one of the biggest plugins exists.
npm i @putout/plugin-remove-unused-variables -D
Rule remove-unused-variables
is enabled by default, to disable add to .putout.json
:
{
"rules": {
"remove-unused-variables": "off"
}
}
const a = 'hello';
const b = 'world';
console.log(a);
const a = 'hello';
console.log(a);
Linter | Rule | Fix |
---|---|---|
🐊 Putout | remove-unused-variables | ✅ |
⏣ ESLint | no-unused-vars | ❌ |
MIT
FAQs
🐊Putout plugin adds ability to find and remove unused variables
The npm package @putout/plugin-remove-unused-variables receives a total of 16,031 weekly downloads. As such, @putout/plugin-remove-unused-variables popularity was classified as popular.
We found that @putout/plugin-remove-unused-variables demonstrated a healthy version release cadence and project activity because the last version was released less than a year ago. It has 1 open source maintainer collaborating on the project.
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