TypeScript Journey

TypeScript transformed how I write JavaScript. The type system catches bugs before runtime and serves as living documentation.

Key Concepts Mastered

Type Inference

TypeScript is smart about inferring types:

const numbers = [1, 2, 3]; // number[]
const first = numbers[0];  // number

Generics

Writing reusable, type-safe code:

function identity<T>(arg: T): T {
    return arg;
}

Utility Types

Built-in types for common transformations:

type PartialUser = Partial<User>;
type ReadonlyUser = Readonly<User>;
type UserKeys = keyof User;

Discriminated Unions

Pattern matching with types:

type Result<T> =
    | { success: true; data: T }
    | { success: false; error: string };

Impact on My Work

• Fewer runtime errors in production
• Better IDE support and autocomplete
• Easier refactoring with confidence
• Self-documenting code

What's Next

Continue exploring advanced patterns:

• Template literal types
• Conditional types
• Type-level programming