Modernize your JavaScript code. In under 10 minutes.
Create pull requests to use new language features and apply best practices. For JavaScript and TypeScript.
“P42 helps us keep the code of our various Vega repositories consistently up to date with modern JavaScript and TypeScript standards." - Dominik Moritz, Vega
Effortlessly upgrade your codebase instead of spending months on painful, dull manual refactoring. Your time is better spent on implementing exciting features and solving challenging bugs.
Stay up to date with the latest best practices, language syntax, and libraries. The JavaScript ecosystem changes fast - P42 ships new code modernizations regularly, so you don't have to worry about every detail.
Speed up development by having a modern and consistent codebase. Inconsistencies and outdated techniques can slow you down significantly - don't fall into this trap!
Analyze Your Code
No more guesswork and manual checks. P42 scans the code in your GitHub repositories for improvements on every commit.
Still Undecided? Try Our Refactorings In The Playground
Arrow functions are a concise syntax that can often replace the regular function syntax.
let and const are block-scope variable declarations that can replace 'var' declarations in many cases.
Default parameters allow providing default values for function parameters.
for...of loops over iterable objects, for example arrays or strings.
The spread syntax (...) allows iterables like array expressions to be expanded in place where arguments are expected.
Template literals are string templates that can include variables and expressions.
Convert variable declarations with multiple variables into separate declarations that declare one variable each.
