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
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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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.