Cursor
api
TypeScript Strict Mode Errors After Refactoring
After enabling or upgrading TypeScript strict mode, Cursor's refactored code now has many type errors. The strict rules catch null/undefined issues and type mismatches that were previously ignored.
Code needs proper typing to satisfy strict mode requirements.
Error Messages You Might See
Object is possibly 'null'
Type 'any' is not assignable
Property does not exist on type
Argument of type 'unknown' not assignable
Common Causes
- Variables not initialized, inferred as 'any' type
- Null/undefined not handled, accessing properties on potentially null values
- Function return type not specified
- Parameters not typed, defaulting to 'any'
- Using 'any' type to bypass checks
How to Fix It
Add types: const value: string = 'hello'. Function returns: function getName(): string { }. Handle null: value?.property || default. Use NonNullAssert if sure: value!. Enable strict in tsconfig: "strict": true.
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Hey I'm Sage! Im a Boston area software engineer who grew up in South Florida. Ive worked at a ton of cool places like a telehealth kidney care startup that took part in a billion dollar merger (Cricket health/Interwell health), a boutique design agency where I got to work on a ton of exciting startups including a photography education app, a collegiate Esports league and more (Philosophie), a data analytics as a service startup in Cambridge (MA) as well as at Phillips and MIT Lincoln Lab where I designed and developed novel network security visualizations and analytics. I've been writing code and furiously devoted to using computers to make people’s lives easier for about 17 years. My degree is in making computers make pretty lights and sounds. Outside of work I love hip hop, the Celtics, professional wrestling, magic the gathering, photography, drumming, and guitars (both making and playing them)
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Get HelpFrequently Asked Questions
What does !mean in TypeScript?
Non-null assertion operator. Tells compiler you know value isn't null. Use sparingly - usually fix the root cause.
How do I fix 'possibly null' errors?
Add null check: if (value) { ... }. Or optional chaining: value?.property. Or default: value || defaultValue.