Take the quiz: Common TypeScript Anti-PatternsWhen TypeScript stops protecting you.

Here you can check how well you understand the practical risks discussed in this article: Common TypeScript Anti-Patterns: What Goes Wrong and How to Fix It.
This is not a multiple-choice test. Each question expects a free-form answer written in your own words.

You do not need to repeat the reference wording exactly — paraphrases and synonyms are accepted. What matters is whether you correctly explain the core idea and reasoning behind the concept.

Focus on demonstrating understanding, not on using specific terms.
Most answers work best at around 80–120 words. Short or vague responses may be marked incorrect even if they sound generally relevant.

The goal is to test how you reason about TypeScript behavior in real projects, not how well you memorize definitions.

Part 1

Question 1: What happens to type checking when a variable is typed as `any`?

Question 2: Why can code using `any` compile successfully but fail at runtime?

Question 3: Which IDE features are negatively affected by heavy use of `any`?

Question 4: In which situations can using `any` be an acceptable compromise?

Question 5: How does `unknown` differ from `any` in terms of safety?

Question 6: Why is checking `typeof value === "object"` not enough for nested property access?

Question 7: What is a user-defined type guard and what problem does it solve?

Question 8: Why is `@ts-ignore` considered dangerous even if the code works?

Question 9: When can using `@ts-ignore` be justified, and under what condition?

Question 10: Why is suppressing a TypeScript error worse than fixing it properly?

Part 2

Question 11: What does a type assertion (`as`) do from TypeScript’s perspective?

Question 12: Why do type assertions not guarantee runtime safety?

Question 13: Why do developers often overuse `as` under time pressure?

Question 14: How can simple type checks replace unsafe type assertions?

Question 15: When are generics a more scalable alternative to `as`?

Question 16: Why is centralized type assertion safer than scattered assertions?

Question 17: Why is the combination of `any`, `as`, and `@ts-ignore` especially dangerous?

Question 18: How does false type safety affect maintenance and debugging?

Question 19: What characterizes healthy TypeScript code in real projects?

Question 20: Why is a more verbose but type-safe solution often better in production?

BinaryHandshake

Take the quiz: Common TypeScript Anti-PatternsWhen TypeScript stops protecting you.

Part 1

Part 2

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