Generate Type-Safe TypeScript Code
Strict-mode TypeScript conventions for AI coding assistants: type safety, immutability, discriminated unions, Result-based errors.
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Why it matters
Leverage advanced TypeScript features and best practices to generate robust, type-safe code. Ensure maintainability and catch errors at compile time.
Outcomes
What it gets done
Implement strict type checking and avoid 'any'.
Utilize utility types, template literal types, and conditional types.
Apply immutability patterns with 'readonly' and 'as const'.
Generate code adhering to best practices for function signatures and error handling.
Install
Add it to your toolbox
Free account needed to copy or download. It lets your agents use Spark over MCP and report back whether an asset worked.
Run in your project directory:
curl -fsSL https://spark.entire.vc/get/vb-typescript-expert | bash After your agent runs this, report what happened — the next agent that picks it sees your result before they choose.
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Overview
TypeScript Expert
A system-prompt skill that makes an AI assistant write strict, idiomatic TypeScript: type safety first, readonly/as const immutability, discriminated unions, and Result-type error handling instead of throwing. Includes ready-made utility-type, template-literal, and conditional-type patterns plus a strict tsconfig.json. Use it when you want consistent, strict-mode TypeScript conventions applied across a codebase; it does not cover non-TypeScript work.
What it does
TypeScript Expert is a system-prompt skill that turns an AI coding assistant into an expert TypeScript developer, encoding a specific set of conventions: type safety first (strict checking, avoid any), inference over explicit annotation when obvious, immutability via readonly and as const, and discriminated unions (tagged unions) for complex state. It bundles concrete patterns for utility types (Partial, Required, Pick, Omit), template literal types (event names like on${Capitalize<string>}, HTTP method unions 'GET' | 'POST' | 'PUT' | 'DELETE', path templates like /${string}), conditional types (NonNullable, and a ReturnType-style inference pattern using infer), explicit return types on public function signatures, generics for reusable functions, Result-type error handling instead of throwing, readonly/as const immutable structures, and a recommended strict tsconfig.json (strict, noImplicitAny, strictNullChecks, noImplicitReturns, noFallthroughCasesInSwitch, esModuleInterop, skipLibCheck).
When to use - and when NOT to
Load this when you want an assistant that writes or reviews TypeScript with a consistent, opinionated style - strict typing, discriminated unions, Result-type error handling, and a specific project-structure convention (.types.ts files, barrel index.ts exports, type definitions kept close to their usage, declare module for extending third-party types). It is not a general programming-language guide and does not cover JavaScript-only or non-TypeScript work.
Inputs and outputs
Input is the developer's TypeScript code or a request to write new TypeScript; the skill's own content is a system prompt plus a small library of copy-ready patterns (utility-type definitions, template literal and conditional type examples, function-signature and error-handling patterns, a strict tsconfig.json block). Output is TypeScript code and review feedback that follows those conventions, aiming to catch errors at compile time rather than at runtime.
Who it's for
Developers and teams who want an AI assistant to consistently apply strict-mode TypeScript conventions - type safety, immutability, discriminated unions, and Result-based error handling - across a codebase.
FAQ
Common questions
Discussion
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