🔄✨ @rexeus/typeweaver-zod-to-ts

This utility library provides logic for converting Zod v4 schemas into TypeScript type representations. It is used internally by typeweaver to generate TypeScript types from Zod schemas.

📥 Installation

npm install @rexeus/typeweaver-zod-to-ts

💡 How to use

import { TsTypeNode, TsTypePrinter } from "@rexeus/typeweaver-zod-to-ts";
import { z } from "zod";

// Define a Zod schema
const userSchema = z.object({
  id: z.string(),
  name: z.string(),
  email: z.string().email(),
  age: z.number().optional(),
});

// Convert to TypeScript AST node
const typeNode = TsTypeNode.fromZod(userSchema);

// Print as TypeScript type string
const typeString = TsTypePrinter.print(typeNode);
// Output: { id: string; name: string; email: string; age?: number | undefined; }

✏️ Zod Type Support

✅ Supported Types

The library provides complete TypeScript type generation for the following Zod schema types:

Primitives: z.string(), z.number(), z.boolean(), z.date(), z.bigint(), z.symbol()
Literals: z.literal(), z.enum()
Collections: z.array(), z.record(), z.map(), z.set(), z.tuple()
Objects: z.object() with nested properties and optional fields
Unions: z.union()
Intersections: z.intersection()
Modifiers: z.optional(), z.nullable()
Special types: z.unknown(), z.any(), z.void(), z.never(), z.null(), z.undefined()
Async types: z.promise()

⚠️ Unsupported Types

The following Zod types are not yet implemented and will fall back to unknown type:

Advanced types: z.lazy(), z.templateLiteral(), z.custom(), z.transform(), z.pipe()
Modifiers: z.nonOptional(), z.readonly(), z.default(), z.catch()
Special types: z.nan(), z.file(), z.success()

Note: When encountering unsupported Zod types, the library gracefully falls back to TypeScript's unknown type to maintain type safety.

🧵✨ About typeweaver

Typeweaver is a type-safe HTTP API framework built for API-first development with a focus on developer experience. Use typeweaver to specify your HTTP APIs in TypeScript and Zod, and generate clients, validators, routers, and more ✨

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