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Spencer Miskoviak demonstrates how to refactor code with jscodeshift, a JavaScript In this video, we will discuss how can work with and modify large codebases. As we grow in our careers, we often have to make ... "Tree shaking (dead code elimination) can be an invaluable feature in modern build tools to keep bundle sizes slim. Unfortunately ... In this video, we explore how to use jscodeshift for automated code transformations, following a Test-Driven Development (TDD) ... Automating design token migrations with codemods Steve Dodier-Lazaro When ES modules land in Node, it will be impossible to do this: import {thing} from './common-js-module' Because CommonJS is ...
It's 2025, your startup is growing, and you're still using Javascript patterns from six (8? 12?) years ago. What do you do? Ask your agent to do a large transformation like removing barrel files. In this example, Claude spent 2.5 minutes and 6k tokens, ... Important first step when migrating to React 19 that will save you and your team a lot of time. Keep in mind that Wish for a change, and let AI auto-generate the ast-grep rule for you. You can also ask questions about ast-grep. A codeword is a mechanism to make sweeping changes across your code with ease and effectiveness, assisting in large-scale ...
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Last Updated: June 17, 2026
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Refactoring Code with jscodeshift Codemods, with WealthFront Engineer Spencer Miskoviak
How to Refactor Large Codebases? Building JavaScript Codemods
Codemod-ing away 4MB of JavaScript | Spencer Miskoviak
Codemod Crash Course: Automate Refactoring with jscodeshift
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