Screen TypeScript candidates on real starter repos
40 short TypeScript tasks, each shipping with a public test file and a language-specific runner. Candidates work in their own style; reviewers see how the code actually hangs together.

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Manage badge factory settings. When a badge comes off the factory floor, it has no name.

In a user identity system, an alias cluster is a group of usernames that share exactly the same letters in a different.

Given a word, compute the badge points for that word. You'll need these:

An internal billing system assigns sequential period numbers to billing cycles. Some periods are designated as extended.

Convert an encoded payload, represented as a sequence of symbol values in one radix, to any other radix.

You are building a roster system for a developer training academy. Participants are assigned to numbered cohorts based.

You are writing a decoder for a legacy industrial robot controller. The controller receives a continuous stream of.

Implement a function that encodes plain English text into commit jargon. Your team uses an internal shorthand for.

You are working on a small internal tool that compares two configuration snapshots.

You are cleaning imported contact records before they are saved into a CRM. Each record includes a freeform phone field.

Output the lyrics to 'The Twelve Days of Christmas'. ``text On the first day of Christmas my true love gave to me: a.

Determine if a text sample has full alphabet coverage. A sample with full coverage uses every letter of the alphabet at.

A maritime signal station transmits messages using a sequence of signal flags. A numeric transmission code determines.

Identify grid crossovers in an operations matrix. A grid crossover is a cell whose value is greater than or equal to.

In a grid hunt challenge you scan a rectangular field of characters to locate hidden target strings.

Implement a steps function that computes how many cascade steps a hailstone particle takes to reach unit mass.

Implement the response logic for a basic help-desk chatbot. The bot handles incoming support messages and replies with.

An internal post-mortem tool reconstructs incident chains. Each step in the chain describes an event and how it caused.

An invoicing system needs to print amounts in words on official documents. Given an integer from 0 to 999,999,999,999,.

Read the digits shown on an industrial meter's segment display. Each digit is rendered as a 3-column × 4-row pattern of.

The parcel reference checksum process is used to validate operational parcel identifiers. These normally contain dashes.

Compute the result for a game of Hex / Polygon. The abstract boardgame known as.

Given a layout diagram, determine which plants belong to each tenant in a shared rooftop planter.

Use the Sieve of Eratosthenes to find all the primes from 2 up to a given number.

You are cleaning up a legacy priority table used by an internal routing tool. The old format groups item codes by.

A product team tracks how quickly a release ages across several cadence tiers. Given an age in seconds, calculate how.

Generate the lyrics of the song 'I Know an Old Lady Who Swallowed a Fly'. While you could copy/paste the lyrics, or.

You are auditing a service's observability configuration. Each service carries a single numeric score that encodes.

Add the adjacent hazard counts to a completed Sensor Grid board. Sensor Grid is a popular game where the user has to.

Score a service scorecard. Service scorecards use the same scoring rules as the original bowling exercise, but the.