TypeScript often infers types automatically.
  
  ## Inference
  ```ts
  let count = 10;   // inferred as number
  let title = "Hi"; // inferred as string
  ```
  
  You do not always need to write types.
  
  ## Strict mode
  In tsconfig.json:
  ```json
  {
    "compilerOptions": {
      "strict": true
    }
  }
  ```
  
  Strict mode:
  - prevents undefined mistakes
  - enforces better typing
  - catches more bugs
  
  ## Example
  ```ts
  let userName: string;
  userName = "Tom";
  // userName = null; // error in strict mode
  ```
  
  ## Remember
  - inference reduces noise
  - strict mode increases safety
  - both together are powerful
  

Purpose: understand how TypeScript guesses types and how strict mode protects you. Benefit: less typing, more safety.

Type Inference and Strict Mode

Learn TypeScript for type-safe JavaScript development.

Type Inference and Strict Mode

Inference

Strict mode

Example

Remember

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