Jest ESM Issues: A Meta Tech Cautionary Tale
December 2024 ยท 3 minute readJest, ESM, and the Meta Tech Conundrum: A Cautionary Tale You know that moment when you’re deep in your TypeScript project, everything’s going smooth, and then you import a simple CSV parsing library? Yeah, that’s when Jest decides to remind you about Facebook’s - sorry, Meta’s - opinions on JavaScript modules. Here’s what happened in my project today: A simple import from csv-parse/lib/sync led me down a rabbit hole of Jest configuration hell.