This is an attempt to unify a few threads around type safety that I’ve encountered and put a slightly different spin on them.

cross-posted from: https://programming.dev/post/32376875

Biome is a formatter and linter for web languages: JavaScript, TypeScript, CSS, HTML, JSON, and GraphQL.

Version 2 adds type-aware lint rules and it is the first TypeScript linter that does not require tsc. Other new features include:

• Monorepo support
• GritQL Plugins
• Revamped, configurable import sorting
• Linter domains
• Bulk suppressions
• Analyzer assists
• Many new lint rules

I'd like to validate untrusted config JSON submitted to my application against a TypeScript interface. If it's bad, I'd like to serialize a TypeScript object with default values, and suggest it as a pattern.

Last time I looked, TypeScript didn't provide runtime access to types and interfaces, so I'm not clear if that's possible without build-time tomfoolery.

I'd prefer to avoid JSON schemas if I can, but I guess that's an option too.

Are there libraries or new-ish language features that I could use?

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https://devblogs.microsoft.com/typescript/typescript-native-port/