Code typing · TypeScript · Single course

Type TypeScript without hunting for <T>, |, ?:, and as const.

Your prose speed does not carry over to TypeScript. This course drills generic angle brackets (<T>), union pipes (|), satisfies and as const assertions, optional members (?:), and mapped type syntax inside real, working code until the symbols stop costing you a beat.

5 modules29 drills4 simulations~2.8 hrs$19 once
Try a free lesson

See the full syllabus and free preview lessons — every lesson title, module by module.

Lifetime access · first 2 lessons free · 30-day money-back guarantee

What you'll be able to do

  • Work through 33 TypeScript lessons across 5 modules (about 2.8 hours)
  • Type <T>, |, ?:, and as const without looking down or backspacing
  • Produce TypeScript declarations, control flow, and function signatures as single motor patterns
  • Hit camelCase, snake_case, and PascalCase identifiers at the same speed as plain words
  • Hold accuracy on symbol-dense lines instead of falling into correction loops
  • Track your TypeScript speed and accuracy separately from your prose numbers

Also included in

TypeScript Code Typing comes free with 3 bigger packages

If you are likely to want more than one course, the ladder below is cheaper than buying them one at a time.

  • Complete Code Typing Pack$304 if bought separately$59

    16 courses · 528 lessons · 64 simulations · ~44.8 hrs

    Save $245 · 81%

    Only $40 more than TypeScript Code Typing on its own.

  • Complete Developer Interview Prep$333 if bought separately$69

    17 courses · 583 lessons · 69 simulations · ~50.3 hrs

    Save $264 · 79%

    Only $50 more than TypeScript Code Typing on its own.

  • All-Access Pass$1,476 if bought separately$99

    74 courses · 4,315 lessons · 99 simulations · ~375 hrs

    Save $1,377 · 93%

    Only $80 more than TypeScript Code Typing on its own.

Who it's for

This course is for

  • TypeScript developers who write more type annotations than they expected to
  • Bootcamp students and career switchers learning TypeScript syntax and typing it for the first time
  • Interview candidates facing live-coding rounds in TypeScript, where boilerplate eats thinking time
  • Fast prose typists whose TypeScript speed is a fraction of their English speed

Probably not for

  • Developers who never write TypeScript — pick the course for the language you actually use
  • Typists who have not learned touch typing on letters yet; start with the free beginner course
  • Polyglot engineers who want several languages — Complete Code Typing Pack is cheaper per course

How the course works

  1. 1

    Symbols first

    The Symbols & Operators module isolates <T>, |, ?:, and as const so the keys that cause the most hesitation get drilled on their own.

  2. 2

    Then idioms

    Keywords & Idioms and Real Snippets move from single operators to the TypeScript patterns you type every day, all in working code.

  3. 3

    Then the clock

    Speed Runs and Assessment Simulations put the patterns under time pressure, which is where an untrained symbol key shows up.

Curriculum

5 modules · 29 drills · 4 simulations · ~2.8 hrs

33 lessons in 5 modules — Symbols & Operators, Keywords & Idioms, Real Snippets, Speed Runs, Assessment Simulations — roughly 2.8 hours. Every snippet is real TypeScript that works as written, so the patterns you drill are the ones you will type at work.

TypeScript Code Typing5 modules · 29 drills · 4 simulations · ~2.8 hrs
1

Symbols & Operators

7 lessons
Operators & SymbolsFree previewGeneric Angle BracketsFree preview
Unions & Intersections
Type-Level Operators
satisfies, as const & Bang
Arrows, Overloads & Predicates
Checkpoint: Symbol Fluency
2

Keywords & Idioms

7 lessons
Keywords
Declarations
Narrowing unknown
Utility Types
Idiomatic One-Liners
Async Idioms
Checkpoint: Keywords & Idioms
3

Real Snippets

8 lessons
Control Flow
Functions & Methods
Class & Fluent Builder
Typed Error Classes
Maps, Sets & Records
Realistic Snippet
Generic Repository
Checkpoint: Real Snippets
4

Speed Runs

6 lessons
Speed Run: Runtime Validator
Speed Run: Typed Fetch Client
Speed Run: State Reducer
Speed Run: Utility Type Gymnastics
Speed Run: Tests & Asserts
Checkpoint: Sustained Speed
5

Assessment Simulations

5 lessons
Assessment Sim 1: CSV Record Parser
Assessment Sim 2: Generic TTL Cache
Assessment Sim 3: Typed Job Queue
Assessment Sim 4: Config Loader
Checkpoint: TypeScript Mastery Final
View full course outline →

Why typing speed matters for code

Type annotations add a second symbol language on top of JavaScript — angle brackets, pipes, and colons appear in places prose typing never trained.

Every backspace in an editor is a round trip: notice, stop, delete, retype. On symbol-dense lines that loop costs far more than the keystroke it saved, which is why accuracy beats raw speed here.

Each TypeScript drill is original code written to compile or run as authored, so your muscle memory learns correct syntax rather than typos.

30-day money-back guarantee

Try the free preview lessons first. If you buy and the course still is not right for you, email us within 30 days for a full refund — no questions asked. Payments are handled by Polar; refunds go back to your original payment method.

Frequently asked questions

I already type fast in English. Do I need a TypeScript course?

Probably. Type annotations add a second symbol language on top of JavaScript — angle brackets, pipes, and colons appear in places prose typing never trained. Try the free preview lessons and compare the number to your prose speed — the gap is the part this course closes.

Should I get Complete Code Typing Pack instead?

If you write more than one language, yes. Complete Code Typing Pack covers all 16 language courses — $304 bought one at a time, $59 together, saving $245 (81%). If TypeScript is the only language you type all day, buy this course on its own.

Is the TypeScript code real?

Yes. Every drill is original TypeScript written to compile or run as authored, covering variables, functions, control flow, data structures, and the idioms specific to the language.

Can I try the TypeScript course before I buy?

Yes. The first 2 lessons of every paid course are free previews — sign in and start typing. If the drills feel right, one purchase unlocks the rest.

Does my progress save?

Yes. Lesson completions, speed and accuracy history, and your all-time best records are stored on your account, so you can pick up on any device where you left off.

Is the TypeScript course a one-time purchase?

Yes. You pay once and keep lifetime access. There is no recurring charge and nothing to cancel — the course stays in your library for as long as SureTyping exists.

Beginner courses are free for every keyboard layout. Start with the free lessons or get All-Access for $99.

TypeScript Code Typing

$19 · lifetime