AI Prompts for Gemini for TypeScript
20 of the best prompts for Gemini for TypeScript, step by step across 4 stages. Works with ChatGPT, Claude, and Gemini.
AI Prompts for Gemini for TypeScript
20 of the best prompts for Gemini for TypeScript, step by step across 4 stages. Works with ChatGPT, Claude, and Gemini.
Published July 5, 2026
Write strongly typed TypeScript, resolve complex type errors, design clean interfaces, and migrate JavaScript projects with confidence. Built across 4 distinct stages covering Type Design, Generics and Advanced Types, Real-World Patterns and more, this guide gives you one expert prompt per step so you never have to write from scratch or guess what the AI needs. The prompts work in ChatGPT, Claude, and Gemini and are designed to get usable output on the first try.
Type Design
Model your domain accurately with the right TypeScript constructs.
Data has
Model [DESCRIBE DOMAIN CONCEPT] in TypeScript. The data has [DESCRIBE FIELDS AND RELATIONSHIPS]. Write interfaces and types using union types, optional fields, and generics where appropriate.
Design discriminated union
Design a discriminated union for [STATE MACHINE OR EVENT SYSTEM] with these variants: [LIST]. Show the type definition and a type guard for each variant.
Convert JavaScript object
Convert this JavaScript object to a strict TypeScript interface: [PASTE OBJECT]. Infer the best type for each field and flag anything that should be an enum or literal.
Create utility type
Create a utility type that [DESCRIBE TRANSFORMATION]. Apply it to this existing type: [PASTE TYPE].
Write function overload signatures
Write the function overload signatures for a function that behaves differently based on its arguments: [DESCRIBE OVERLOADS].
Generics and Advanced Types
Write reusable, type-safe utilities with generics and conditional types.
Write generic function
Write a generic function that [DESCRIBE BEHAVIOR]. The return type should infer correctly so callers get full autocomplete. Show two usage examples.
Build type-safe event emitter
Build a type-safe event emitter where events are defined in this map: [PASTE MAP]. The on(), off(), and emit() methods should be fully typed.
Explain conditional types
Explain conditional types with this practical use case: [DESCRIBE]. Show the implementation and three applications.
Write builder pattern
Write a builder pattern for [DESCRIBE OBJECT] where TypeScript enforces that required fields are set before .build() can be called.
Explain what satisfies adds
Explain what satisfies adds to this config vs a plain type annotation: [PASTE CONFIG]. When should I prefer satisfies over as const?
Real-World Patterns
Apply TypeScript to API clients, forms, state, and configuration.
Fetch data
I fetch data from this API: [DESCRIBE SHAPE]. Write the TypeScript types, a typed fetch wrapper with error handling, and a service function to consume it.
Type Zustand store:
Type this Zustand store: [PASTE STORE]. Add state, action, and selector types. Handle async actions with loading and error states.
Write typed React form
Write a typed React form using React Hook Form with Zod validation so it is end-to-end type safe: [DESCRIBE FIELDS AND RULES].
Add TypeScript
Add TypeScript to this Express route: [PASTE ROUTE]. Type request params, query, body, and response. Show a typed middleware wrapper.
Convert untyped config
Convert this untyped config to strict TypeScript: [PASTE CONFIG]. Use const assertions or satisfies where appropriate.
Debugging and Migration
Resolve type errors and move JavaScript codebases to TypeScript.
TypeScript error:
I have this TypeScript error: [PASTE ERROR AND CODE]. Explain what TypeScript is detecting and show two correct ways to fix it.
Convert JavaScript file
Convert this JavaScript file to TypeScript: [PASTE FILE]. Add types from function signatures outward, avoid any, and flag anything needing runtime validation.
Enable strict mode
I want to enable strict mode. My tsconfig: [PASTE]. Walk me through what each strict flag enables and the right order to turn them on.
File is full
This file is full of any types: [PASTE]. Replace every any with a proper type, using unknown where appropriate and adding type guards where needed.
Explain practical difference
Explain the practical difference between these TypeScript patterns I keep confusing: [LIST, E.G. "INTERFACE VS TYPE", "UNKNOWN VS ANY", "AS CONST VS SATISFIES"].
Frequently asked questions
Can Gemini help with TypeScript errors?+
Yes. Paste the error and surrounding code and Gemini will explain what TypeScript detected and show the correct fix without suppressing the error.
How does Gemini handle generics and advanced types?+
Gemini handles conditional types, mapped types, template literal types, and utility type composition. Describe the input and expected output clearly for the most accurate results.
Can Gemini help migrate JavaScript to TypeScript?+
Yes. Gemini adds types incrementally from function signatures outward, flags anything that needs runtime validation, and avoids introducing any types.
What TypeScript topics does Gemini handle best?+
Interface design, discriminated unions, generics, utility types, strict mode migration, and typing patterns like API clients and React hooks are all strong areas.
Can Gemini write type-safe API clients?+
Yes. Provide the API response shape and Gemini will generate typed interfaces, a fetch wrapper, and a service function to consume the data safely.
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