TypeScript
A typed superset of JavaScript that adds static type checking, enabling safer and more maintainable codebases at scale.
How to verify TypeScript skills
Get matched with a peer
Lemma's matching engine pairs you with a practitioner who complements your TypeScript level. Both of you benefit from the session.
Demonstrate your skills live
In a video session, you work through real TypeScript problems. Your peer observes your approach, reasoning, and output quality.
Build your evidence trail
Session evidence feeds into your TypeScript SCI score automatically. Each session adds to your verifiable track record.
Related skills
Frequently asked questions
How do I verify my TypeScript skills on Lemma?
During a peer session, you work through type system challenges, refactor untyped code, or design type-safe APIs. Your partner evaluates your use of generics, utility types, discriminated unions, and type narrowing.
What does a TypeScript SCI score measure?
Your TypeScript SCI reflects mastery of the type system including generics, conditional types, mapped types, declaration merging, and practical application in real codebases.
What TypeScript features are most valued in peer sessions?
Peers typically evaluate your ability to design type-safe interfaces, use generics effectively, handle union types with narrowing, and leverage utility types. Advanced sessions may cover conditional types and template literal types.
How does TypeScript verification compare to Microsoft certifications?
Microsoft certifications test knowledge through multiple-choice exams. Lemma verification captures your ability to write, refactor, and reason about TypeScript in real-time with a peer witness.
Start verifying your TypeScript skills
Join Lemma to prove what you know through peer sessions and build a trusted Skill Passport.
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