@zod-to-form/vite

Vite plugin for zod-to-form — transforms ?z2f imports into generated form components and optionally replaces <ZodForm> JSX call sites with generated components at build time

Two modes: ?z2f query imports (transform per-import, HMR works) vs generate mode (static JSX rewriting, no HMR integration). Use ?z2f for new forms, generate for migrating existing <ZodForm> call sites.

Setup

The plugin emits standard React + react-hook-form code, so the consumer app needs the form runtime as a regular dep — even if no source file imports from @zod-to-form/react directly.

pnpm add -D @zod-to-form/vite
pnpm add zod react react-dom react-hook-form @hookform/resolvers

Wire the plugin BEFORE @vitejs/plugin-react so the generated TSX flows through React's JSX transform normally:

// vite.config.ts
import { defineConfig } from 'vite';
import react from '@vitejs/plugin-react';
import z2fVite from '@zod-to-form/vite';

export default defineConfig({ plugins: [z2fVite(), react()] });

Add the ambient declarations for ?z2f imports to your tsconfig.json:

{ "compilerOptions": { "types": ["@zod-to-form/vite/client"] } }

When to Use

Use this skill when:

• You want import SignupForm from './signup.schema?z2f' to Just Work in a Vite app → use z2fVite — the plugin intercepts the import and compiles the form on demand
• You want HMR-aware form recompilation when schemas change in development → use z2fVite — only the affected virtual modules are invalidated
• You want to run generate mode to pre-compile forms from <ZodForm> call sites → use z2fVite — opt in via generate: {} in plugin options
• Catching plugin errors in integration tests: expect(fn).toThrow(/Z2F_VITE_/)) → use Z2FViteError
• Wrapping plugin calls in error handlers that need to branch on specific error codes → use Z2FViteError

Do NOT use when:

• You are building with webpack, esbuild, Rollup, or any non-Vite bundler — use @zod-to-form/cli instead (z2fVite)
• Your schemas have cyclic references — the walker will recurse infinitely on them; break cycles before using the plugin (z2fVite)
• You need server-side form rendering without a React runtime — static codegen produces lighter SSR-compatible output (z2fVite)
• General application error handling — this class is specific to plugin-level failures; use standard Error or your own error hierarchy for application errors (Z2FViteError)

API surface: 2 functions, 1 classes, 6 types

NEVER

• NEVER use ?z2f on schemas with cyclic type references — the schema walker recurses on Zod's internal type graph and hangs with no error or timeout; FIX: break cycles with z.lazy() before using the ?z2f import
• NEVER enable generate mode and then rely on HMR without testing — the generate-mode transform cache does not integrate with Vite's standard HMR module invalidation for rewritten JSX files; FIX: disable generate mode during development and only enable it in production builds
• NEVER configure configPath to point outside the Vite root — the plugin uses ssrLoadModule with a dev server scoped to root, so files outside that boundary may fail to resolve their own imports; FIX: move the config into the Vite root or set root to include it — produces Z2F_VITE_SCHEMA_OUTSIDE_ROOT error
• NEVER compare error.message to detect error type — the [Z2F_VITE_...] prefix in the message is an implementation detail and may change; FIX: always check error.code (e.g. error.code === 'Z2F_VITE_SCHEMA_NOT_FOUND') for stable, semver-stable matching

Configuration

4 configuration interfaces — see references/config.md for details.

Quick Reference

Plugin: z2fVite (Vite plugin factory for @zod-to-form/vite) Errors: formatZ2FViteError (Format a Z2FViteError for inclusion in a Vite error overlay or terminal output), Z2FViteError (Structured error thrown by the @zod-to-form/vite plugin), Z2FViteErrorLocation (Source location attached to a Z2FViteError for IDE navigation and Vite overlay display) types: GenerationTarget (A single (schema, variant, config) triple that produces exactly one generated form), CompilationEntry (One cached compilation result), GenerateSite (A single <ZodForm> JSX element matched by generate mode), HMRInvalidationMap (The graph edges that handleHotUpdate walks when a watched file changes) errors: Z2FViteErrorCode (Plugin error classes)

References

Load these on demand — do NOT read all at once:

• When calling any function → read references/functions.md for full signatures, parameters, and return types
• When using a class → read references/classes/ for properties, methods, and inheritance
• When defining typed variables or function parameters → read references/types.md
• When configuring options → read references/config.md for all settings and defaults

Links

• Repository
• Author: Pradeep Mouli pmouli@mac.com (https://github.com/pradeepmouli)