You're Using TypeScript Wrong (7 Patterns to Avoid)
TypeScript just became the #1 programming language on GitHub, but most developers are still making these critical mistakes that defeat the entire purpose of type safety.In this video, I break down 7 patterns that silently turn off TypeScript's ability to catch bugs. You write TypeScript, but you get JavaScript-level safety. Each pattern includes live code demos in the TypeScript Playground showing exactly what goes wrong and how to fix it.
⏱️ TIMESTAMPS
0:00 - Introduction
0:43 - Mistake #1: Using 'any' Everywhere
1:41 - Mistake #2: Type Assertions Over Guards
2:37 - Mistake #3: Ignoring Null Checks
4:21 - Mistake #4: Wrong Generic Constraints
6:05 - Mistake #5: Enum Pitfalls
7:54 - Mistake #6: Interface vs Type Confusion
9:35 - Mistake #7: Not Using Strict Mode
11:35 - Recap: Complete Checklist
📋 THE 7 PATTERNS TO AVOID
1. Using 'any' as a quick fix — defeats type checking entirely
2. Using 'as Type' instead of type guards — runtime crashes waiting to happen
3. Ignoring null/undefined — optional chaining isn't enough
4. Missing generic constraints — 'as any' hacks hide real problems
5. Numeric enums without explicit values — silent bugs at runtime
6. Interface vs Type confusion — use the right tool for the job
7. Skipping strict mode — you're only using half of TypeScript
💡 KEY TAKEAWAYS
TypeScript only catches bugs when you use it correctly. These 7 patterns are escape hatches that let unsafe code slip through. Stop using 'any', stop using type assertions, enable strict mode, and let the compiler do its job. Receive SMS online on sms24.me
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