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TypeScript

TypeScript

Add the type safety that modern teams expect — and read compiler errors with confidence.

$149$199Save $50Founding batch price
Live classes + recordingsReal code reviewsCertificate on finish
Reserve my seat — freeQuestions? Book a free call

Reserve free · pay only when your batch is confirmed. Evening classes for students in the US, UK, Canada & Australia · taught by a working developer

Who it's for

Students who know JavaScript and want the type safety React, Angular and Node teams expect.

Prerequisites

The JavaScript batch or equivalent.

4

Weeks

8

Live classes

10

Live hours

What you'll be able to do

  • Type functions, objects and arrays, and read compiler errors with confidence.
  • Model data with interfaces, union and literal types, and narrow them safely.
  • Write reusable generic functions and components.
  • Use utility types and type a real API response end to end.
  • Configure tsconfig and migrate a JavaScript project to TypeScript.

Week by week

1Week 1

Why TypeScript; setup, tsc, basic types, type inference

Functions, optional and default parameters, arrays and tuples

2Week 2

Interfaces vs type aliases, readonly, optional properties

Unions, literal types, narrowing, discriminated unions, never

3Week 3

Generics: functions, constraints, generic interfaces

Utility types (Partial, Pick, Omit, Record), keyof, mapped types

4Week 4

Typing APIs with fetch and Zod validation; TypeScript with React or Node

Migrating a JS project; capstone demo day

Practice questions

A sample — plus a full question bank on Flycodx.

  1. Type a getUser(id) function that returns User | undefined and handle both cases.
  2. Model a payment as a discriminated union (card, UPI, PayPal) and write an exhaustive switch.
  3. Write a generic firstItem<T>(arr: T[]) and a generic Stack<T> class.
  4. Create DeepReadonly<T> using mapped types.
  5. Type an API response and validate it at runtime with Zod.
  6. Fix 10 compiler errors in a provided JavaScript-to-TypeScript migration.
  7. Use Pick and Omit to build CreateUserInput from User.
  8. Write a type-safe groupBy<T, K extends keyof T> function.
  9. Type an event emitter so on('login', handler) gets the right payload type.
  10. Configure strict mode and explain three errors it catches.

Live projects

mini

Typed to-do API client

With Zod validation.

capstone

Migrate the JavaScript capstone to strict TypeScript

Zero any, typed API layer, generic utilities, README explaining the type design.

Tools you'll use

TypeScriptVS CodeNode.jsViteZodESLintGit

Every batch includes

Recording of every class
Weekly code review on your own code
Doubt replies within 24 hours
Free Flycodx practice

Your mentor

Working developer · 5+ years of real, live-project experience

Your sessions are taught by a working developer with 5+ years of real, live-project experience — someone who writes and ships production code every day, not a content creator.

We teach concepts and review your code. We never write or complete graded assignments or exams. Read our policies.

Questions, answered

Do I need any experience before this batch?

Prerequisite: The JavaScript batch or equivalent.

How much time does it take each week?

Two live classes of 75 minutes, plus a few practice questions and one code review on your own code — about 3–4 hours a week.

What if I miss a class?

Every class is recorded and shared within 24 hours, so you can catch up and still ask questions in the doubt channel.

How do payments and refunds work?

You reserve for free and only pay by secure link once your batch is confirmed. Full refund before the third class — see our policies.

Can I get 1:1 help instead?

Yes, 1:1 mentorship is available from $60/hr. Book a free 20-minute call and we'll build a plan around your course.

Reserve your seat in TypeScript

Free to reserve · you get the start date before you pay. Live batches from $149.

Reserve my seat — freeor book a free call about 1:1

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