Type-Transformations on Dev & Platform Engineering Hub

TS Ep 2: Intermediate TypeScript — Generics, Type Helpers, and Mapped Types

Sun, 09 Aug 2026 13:00:00 +0000

An in-depth guide to intermediate TypeScript type transformations. Master generic functions and constraints (extends), indexed access types, keyof/typeof operators, built-in helpers (Pick, Omit, Record, ReturnType), and mapped type transformations.

TS Ep 39: Mapped Type Modifiers (`+`, `-`, `?`, `readonly`)

Sun, 09 Aug 2026 12:25:00 +0000

An in-depth guide to Mapped Type Modifiers in TypeScript. Learn how to preserve, add (+), or strip (-) property modifiers like readonly and ?. We explore how these mapping modifiers power TypeScript’s built-in Partial, Required, and Readonly utility types.

TS Ep 38: Mapped Types (Basics)

Sun, 09 Aug 2026 12:20:00 +0000

An in-depth guide to Mapped Types in TypeScript. Learn how to use the [K in Union] syntax to iterate over literal unions, transform existing object properties using keyof and Indexed Access, and build strict state validation maps that perfectly mirror domain models.

TS Ep 36: Built-in Utility Types (`Extract` and `Exclude`)

Sun, 09 Aug 2026 12:10:00 +0000

An in-depth guide to the Extract and Exclude utility types. Understand the fundamental difference between Object manipulation (Pick/Omit) and Union manipulation (Extract/Exclude), extracting by object signature in discriminated unions, and their underlying distributive conditional type mechanics.

TS Ep 35: Built-in Utility Types (`Record`)

Sun, 09 Aug 2026 12:05:00 +0000

An in-depth look at the Record<K, V> utility type. Learn how to type arbitrary string dictionaries, enforce exhaustive key mapping using Unions, and combine Record with other utilities to model complex domain configurations.

TS Ep 34: Built-in Utility Types (`Pick` and `Omit`)

Sun, 09 Aug 2026 12:00:00 +0000

An in-depth guide to Pick and Omit utility types in TypeScript. Learn under-the-hood mapped type implementations (Pick via mapped types, Omit via Exclude), key constraints differences, building public API DTOs, and the selection decision matrix.

TS Ep 33: Built-in Utility Types (`Partial`, `Required`, `Readonly`)

Sun, 09 Aug 2026 11:55:00 +0000

An in-depth analysis of TypeScript’s foundational object utility types. Learn how Partial<T>, Required<T>, and Readonly<T> transform property modifiers, their under-the-hood mapped type implementations (?, -?, readonly), and shallow immutability limits.

TS Ep 26: Indexed Access Types (`T[K]`)

Sun, 09 Aug 2026 11:20:00 +0000

An in-depth guide to Indexed Access Types (T[K]). Learn how to look up specific property types from object shapes, perform nested indexing, index with unions T['a' | 'b'], extract array element types using [number], and enforce DRY type architectures.