Two-stage codegen: React + Vue + Svelte from one schema

Stage 1 (framework-agnostic):
  types.ts           — OpenAPI interfaces
  contexts/<name>.ts — fetchXxxContext(params) using mizanFetch
  mutations/<name>.ts — callXxx(args) using mizanCall
  functions/<name>.ts — callXxx(args) using mizanCall
  index.ts           — re-exports

Stage 2 (per framework):
  react.tsx  — hooks + context providers + SSR hydration
  vue.ts     — composables with provide/inject + ref/computed
  svelte.ts  — writable/derived store factories

New packages:
  mizan-runtime — the kernel (~200 lines, zero framework deps)
    configure(), initSession(), registerContext(), invalidate(),
    mizanFetch(), mizanCall(), MizanError
  mizan-vue     — Vue adapter (package.json, codegen template)
  mizan-svelte  — Svelte adapter (package.json, codegen template)

CLI: mizan-generate --target react,vue,svelte
Config: target: 'react' (default) in django.config.mjs

Verified: codegen produces 33 functions across 2 contexts,
14 plain functions, 0 mutations, generating all three Stage 2
outputs from one schema fetch.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
This commit is contained in:
2026-04-07 12:09:35 -04:00
parent 6108845d99
commit c20de182e1
35 changed files with 6009 additions and 817 deletions

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// AUTO-GENERATED by mizan — do not edit
import { mizanFetch } from '@mizan/runtime'
import type { currentUserOutput } from '../types'
export interface GlobalContextData {
current_user: currentUserOutput
}
export type GlobalContextParams = Record<string, never>
export function fetchGlobalContext(params: GlobalContextParams): Promise<GlobalContextData> {
return mizanFetch('global', params)
}

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// AUTO-GENERATED by mizan — do not edit
import { mizanFetch } from '@mizan/runtime'
import type { greetOutput } from '../types'
export interface LocalContextData {
greet: greetOutput
}
export interface LocalContextParams {
name: string
}
export function fetchLocalContext(params: LocalContextParams): Promise<LocalContextData> {
return mizanFetch('local', params)
}

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// AUTO-GENERATED by mizan — do not edit
import { mizanCall } from '@mizan/runtime'
import type { addInput, addOutput } from '../types'
export function callAdd(args: addInput): Promise<addOutput> {
return mizanCall('add', args)
}

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// AUTO-GENERATED by mizan — do not edit
import { mizanCall } from '@mizan/runtime'
import type { buggyFnOutput } from '../types'
export function callBuggyFn(): Promise<buggyFnOutput> {
return mizanCall('buggy_fn', {})
}

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// AUTO-GENERATED by mizan — do not edit
import { mizanCall } from '@mizan/runtime'
import type { echoInput, echoOutput } from '../types'
export function callEcho(args: echoInput): Promise<echoOutput> {
return mizanCall('echo', args)
}

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// AUTO-GENERATED by mizan — do not edit
import { mizanCall } from '@mizan/runtime'
import type { httpOnlyEchoInput, httpOnlyEchoOutput } from '../types'
export function callHttpOnlyEcho(args: httpOnlyEchoInput): Promise<httpOnlyEchoOutput> {
return mizanCall('http_only_echo', args)
}

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// AUTO-GENERATED by mizan — do not edit
import { mizanCall } from '@mizan/runtime'
import type { jwtObtainOutput } from '../types'
export function callJwtObtain(): Promise<jwtObtainOutput> {
return mizanCall('jwt_obtain', {})
}

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// AUTO-GENERATED by mizan — do not edit
import { mizanCall } from '@mizan/runtime'
import type { jwtRefreshInput, jwtRefreshOutput } from '../types'
export function callJwtRefresh(args: jwtRefreshInput): Promise<jwtRefreshOutput> {
return mizanCall('jwt_refresh', args)
}

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// AUTO-GENERATED by mizan — do not edit
import { mizanCall } from '@mizan/runtime'
import type { multiplyInput, multiplyOutput } from '../types'
export function callMultiply(args: multiplyInput): Promise<multiplyOutput> {
return mizanCall('multiply', args)
}

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// AUTO-GENERATED by mizan — do not edit
import { mizanCall } from '@mizan/runtime'
import type { notImplementedFnOutput } from '../types'
export function callNotImplementedFn(): Promise<notImplementedFnOutput> {
return mizanCall('not_implemented_fn', {})
}

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// AUTO-GENERATED by mizan — do not edit
import { mizanCall } from '@mizan/runtime'
import type { permissionCheckFnInput, permissionCheckFnOutput } from '../types'
export function callPermissionCheckFn(args: permissionCheckFnInput): Promise<permissionCheckFnOutput> {
return mizanCall('permission_check_fn', args)
}

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// AUTO-GENERATED by mizan — do not edit
import { mizanCall } from '@mizan/runtime'
import type { staffOnlyOutput } from '../types'
export function callStaffOnly(): Promise<staffOnlyOutput> {
return mizanCall('staff_only', {})
}

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// AUTO-GENERATED by mizan — do not edit
import { mizanCall } from '@mizan/runtime'
import type { superuserOnlyOutput } from '../types'
export function callSuperuserOnly(): Promise<superuserOnlyOutput> {
return mizanCall('superuser_only', {})
}

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// AUTO-GENERATED by mizan — do not edit
import { mizanCall } from '@mizan/runtime'
import type { verifiedOnlyOutput } from '../types'
export function callVerifiedOnly(): Promise<verifiedOnlyOutput> {
return mizanCall('verified_only', {})
}

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// AUTO-GENERATED by mizan — do not edit
import { mizanCall } from '@mizan/runtime'
import type { whoamiOutput } from '../types'
export function callWhoami(): Promise<whoamiOutput> {
return mizanCall('whoami', {})
}

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// AUTO-GENERATED by mizan — do not edit
import { mizanCall } from '@mizan/runtime'
import type { wsWhoamiOutput } from '../types'
export function callWsWhoami(): Promise<wsWhoamiOutput> {
return mizanCall('ws_whoami', {})
}

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{
"openapi": "3.1.0",
"info": {
"title": "mizan Channels",
"version": "1.0.0",
"description": "Auto-generated schema for mizan channels"
},
"paths": {
"/channels/chat/params": {
"post": {
"operationId": "chatParams",
"summary": "Chat channel params",
"parameters": [],
"responses": {
"200": {
"description": "OK",
"content": {
"application/json": {
"schema": {
"$ref": "#/components/schemas/BaseModel"
}
}
}
}
},
"requestBody": {
"content": {
"application/json": {
"schema": {
"$ref": "#/components/schemas/ChatParams"
}
}
},
"required": true
}
}
},
"/channels/chat/react": {
"post": {
"operationId": "chatReactMessage",
"summary": "Chat React→Django message",
"parameters": [],
"responses": {
"200": {
"description": "OK",
"content": {
"application/json": {
"schema": {
"$ref": "#/components/schemas/BaseModel"
}
}
}
}
},
"requestBody": {
"content": {
"application/json": {
"schema": {
"$ref": "#/components/schemas/ChatReactMessage"
}
}
},
"required": true
}
}
},
"/channels/chat/django": {
"post": {
"operationId": "chatDjangoMessage",
"summary": "Chat Django→React message",
"parameters": [],
"responses": {
"200": {
"description": "OK",
"content": {
"application/json": {
"schema": {
"$ref": "#/components/schemas/ChatDjangoMessage"
}
}
}
}
}
}
},
"/channels/notifications/django": {
"post": {
"operationId": "notificationsDjangoMessage",
"summary": "Notifications Django→React message",
"parameters": [],
"responses": {
"200": {
"description": "OK",
"content": {
"application/json": {
"schema": {
"$ref": "#/components/schemas/NotificationsDjangoMessage"
}
}
}
}
}
}
},
"/channels/presence/django": {
"post": {
"operationId": "presenceDjangoMessage",
"summary": "Presence Django→React message",
"parameters": [],
"responses": {
"200": {
"description": "OK",
"content": {
"application/json": {
"schema": {
"$ref": "#/components/schemas/PresenceDjangoMessage"
}
}
}
}
}
}
},
"/channels/private/django": {
"post": {
"operationId": "privateDjangoMessage",
"summary": "Private Django→React message",
"parameters": [],
"responses": {
"200": {
"description": "OK",
"content": {
"application/json": {
"schema": {
"$ref": "#/components/schemas/PrivateDjangoMessage"
}
}
}
}
}
}
}
},
"components": {
"schemas": {
"BaseModel": {
"properties": {},
"title": "BaseModel",
"type": "object"
},
"ChatParams": {
"properties": {
"room": {
"title": "Room",
"type": "string"
}
},
"required": [
"room"
],
"title": "ChatParams",
"type": "object"
},
"ChatReactMessage": {
"properties": {
"text": {
"title": "Text",
"type": "string"
}
},
"required": [
"text"
],
"title": "ChatReactMessage",
"type": "object"
},
"ChatDjangoMessage": {
"properties": {
"text": {
"title": "Text",
"type": "string"
}
},
"required": [
"text"
],
"title": "ChatDjangoMessage",
"type": "object"
},
"NotificationsDjangoMessage": {
"properties": {
"text": {
"title": "Text",
"type": "string"
}
},
"required": [
"text"
],
"title": "NotificationsDjangoMessage",
"type": "object"
},
"PresenceDjangoMessage": {
"properties": {
"value": {
"title": "Value",
"type": "integer"
}
},
"required": [
"value"
],
"title": "PresenceDjangoMessage",
"type": "object"
},
"PrivateDjangoMessage": {
"properties": {
"text": {
"title": "Text",
"type": "string"
}
},
"required": [
"text"
],
"title": "PrivateDjangoMessage",
"type": "object"
}
}
},
"servers": [],
"x-mizan-channels": [
{
"name": "chat",
"pascalName": "Chat",
"hasParams": true,
"hasReactMessage": true,
"hasDjangoMessage": true,
"paramsType": "ChatParams",
"reactMessageType": "ChatReactMessage",
"djangoMessageType": "ChatDjangoMessage"
},
{
"name": "notifications",
"pascalName": "Notifications",
"hasParams": false,
"hasReactMessage": false,
"hasDjangoMessage": true,
"djangoMessageType": "NotificationsDjangoMessage"
},
{
"name": "presence",
"pascalName": "Presence",
"hasParams": false,
"hasReactMessage": false,
"hasDjangoMessage": true,
"djangoMessageType": "PresenceDjangoMessage"
},
{
"name": "private",
"pascalName": "Private",
"hasParams": false,
"hasReactMessage": false,
"hasDjangoMessage": true,
"djangoMessageType": "PrivateDjangoMessage"
}
]
}

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'use client'
// AUTO-GENERATED by mizan - do not edit manually
// Regenerate with: npm run schemas
// Typed form hooks with Zod validation.
// Zod schemas are generated from Django form field definitions.
// Client-side validation matches Django constraints (required, max_length, email, etc.)
import { z } from 'zod'
import {
useDjangoFormCore,
useDjangoFormsetCore,
type DjangoFormState,
type DjangoFormsetState,
type FormOptions,
} from 'mizan'
// ============================================================================
// Zod Schemas
// ============================================================================
/**
* Zod schema for login form
* Generated from Django form field definitions
*/
export const LoginSchema = z.object({
})
/**
* Zod schema for signup form
* Generated from Django form field definitions
*/
export const SignupSchema = z.object({
})
/**
* Zod schema for add_email form
* Generated from Django form field definitions
*/
export const AddEmailSchema = z.object({
})
/**
* Zod schema for contact form
* Generated from Django form field definitions
*/
export const ContactSchema = z.object({
name: z.string().max(100),
email: z.string().email('Invalid email address').max(320),
message: z.string(),
})
/**
* Zod schema for item form
* Generated from Django form field definitions
*/
export const ItemSchema = z.object({
label: z.string().max(50),
quantity: z.number().int().min(1),
})
// ============================================================================
// Form Data Types (inferred from Zod schemas)
// ============================================================================
/** Form data type for login, inferred from Zod schema */
export type LoginFormData = z.infer<typeof LoginSchema>
/** Form data type for signup, inferred from Zod schema */
export type SignupFormData = z.infer<typeof SignupSchema>
/** Form data type for add_email, inferred from Zod schema */
export type AddEmailFormData = z.infer<typeof AddEmailSchema>
/** Form data type for contact, inferred from Zod schema */
export type ContactFormData = z.infer<typeof ContactSchema>
/** Form data type for item, inferred from Zod schema */
export type ItemFormData = z.infer<typeof ItemSchema>
// ============================================================================
// Form Hooks
// ============================================================================
/**
* Typed form hook for login
*
* Features:
* - Full TypeScript inference for form fields
* - Client-side Zod validation (instant feedback)
* - Server-side Django validation (authoritative)
*/
export function useLoginForm(
options?: FormOptions
): DjangoFormState<LoginFormData> {
return useDjangoFormCore<LoginFormData>({
name: 'login',
zodSchema: LoginSchema,
options,
})
}
/**
* Typed form hook for signup
*
* Features:
* - Full TypeScript inference for form fields
* - Client-side Zod validation (instant feedback)
* - Server-side Django validation (authoritative)
*/
export function useSignupForm(
options?: FormOptions
): DjangoFormState<SignupFormData> {
return useDjangoFormCore<SignupFormData>({
name: 'signup',
zodSchema: SignupSchema,
options,
})
}
/**
* Typed form hook for add_email
*
* Features:
* - Full TypeScript inference for form fields
* - Client-side Zod validation (instant feedback)
* - Server-side Django validation (authoritative)
*/
export function useAddEmailForm(
options?: FormOptions
): DjangoFormState<AddEmailFormData> {
return useDjangoFormCore<AddEmailFormData>({
name: 'add_email',
zodSchema: AddEmailSchema,
options,
})
}
/**
* Typed form hook for contact
*
* Features:
* - Full TypeScript inference for form fields
* - Client-side Zod validation (instant feedback)
* - Server-side Django validation (authoritative)
*/
export function useContactForm(
options?: FormOptions
): DjangoFormState<ContactFormData> {
return useDjangoFormCore<ContactFormData>({
name: 'contact',
zodSchema: ContactSchema,
options,
})
}
/**
* Typed form hook for item
*
* Features:
* - Full TypeScript inference for form fields
* - Client-side Zod validation (instant feedback)
* - Server-side Django validation (authoritative)
*/
export function useItemForm(
options?: FormOptions
): DjangoFormState<ItemFormData> {
return useDjangoFormCore<ItemFormData>({
name: 'item',
zodSchema: ItemSchema,
options,
})
}
/**
* Typed formset hook for item
*/
export function useItemFormset(
initialCount?: number,
liveValidation?: boolean
): DjangoFormsetState<ItemFormData> {
return useDjangoFormsetCore<ItemFormData>({
name: 'item',
zodSchema: ItemSchema,
initialCount,
liveValidation,
})
}
// ============================================================================
// Form Registry
// ============================================================================
export const MIZAN_FORMS = {
login: {
name: 'login',
schema: LoginSchema,
hook: 'useLoginForm',
hasFormset: false,
},
signup: {
name: 'signup',
schema: SignupSchema,
hook: 'useSignupForm',
hasFormset: false,
},
addEmail: {
name: 'add_email',
schema: AddEmailSchema,
hook: 'useAddEmailForm',
hasFormset: false,
},
contact: {
name: 'contact',
schema: ContactSchema,
hook: 'useContactForm',
hasFormset: false,
},
item: {
name: 'item',
schema: ItemSchema,
hook: 'useItemForm',
hasFormset: true,
},
} as const

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/** // AUTO-GENERATED by mizan — do not edit
* mizan API - Consolidated Exports
*
* Import everything from here:
*
* @example
* ```tsx
* import {
* MizanContext,
* useCurrentUser,
* useEcho,
* useChatChannel,
* } from '@/api'
* ```
*/
// AUTO-GENERATED by mizan - do not edit manually export * from './types'
// Regenerate with: npm run schemas
// ============================================================================= export { fetchGlobalContext, type GlobalContextData, type GlobalContextParams } from './contexts/global'
// mizan Provider & Hooks export { fetchLocalContext, type LocalContextData, type LocalContextParams } from './contexts/local'
// =============================================================================
export { export { callEcho } from './functions/echo'
getMizanHydration, export { callAdd } from './functions/add'
getDjangoHydration, export { callWhoami } from './functions/whoami'
type MizanHydrationData, export { callHttpOnlyEcho } from './functions/httpOnlyEcho'
type DjangoHydration, export { callStaffOnly } from './functions/staffOnly'
} from './generated.server' export { callSuperuserOnly } from './functions/superuserOnly'
export { callVerifiedOnly } from './functions/verifiedOnly'
export { export { callMultiply } from './functions/multiply'
// Provider export { callNotImplementedFn } from './functions/notImplementedFn'
MizanContext, export { callBuggyFn } from './functions/buggyFn'
type MizanContextProps, export { callPermissionCheckFn } from './functions/permissionCheckFn'
DjangoContext, export { callWsWhoami } from './functions/wsWhoami'
type DjangoContextProps, export { callJwtObtain } from './functions/jwtObtain'
export { callJwtRefresh } from './functions/jwtRefresh'
// Global context hooks
useCurrentUser,
// Refresh hooks
useMizanRefresh,
useDjangoRefresh,
// Named context providers
LocalContext,
useGreet,
// Function hooks
useEcho,
useAdd,
useWhoami,
useHttpOnlyEcho,
useStaffOnly,
useSuperuserOnly,
useVerifiedOnly,
useMultiply,
useNotImplementedFn,
useBuggyFn,
usePermissionCheckFn,
useWsWhoami,
useJwtObtain,
useJwtRefresh,
// Re-exports from mizan library
useMizan,
useMizanStatus,
usePush,
DjangoError,
type ConnectionStatus,
type PushMessage,
type PushListener,
} from './generated.provider'
// =============================================================================
// Channel Hooks
// =============================================================================
export {
useChatChannel,
useNotificationsChannel,
usePresenceChannel,
usePrivateChannel,
} from './generated.channels.hooks'
// =============================================================================
// Channel Types
// =============================================================================
export type {
ChatParams,
ChatReactMessage,
ChatDjangoMessage,
NotificationsDjangoMessage,
PresenceDjangoMessage,
PrivateDjangoMessage,
} from './generated.channels'

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'use client'
// AUTO-GENERATED by mizan — do not edit
import { createContext, useContext, useState, useEffect, useCallback, type ReactNode } from 'react'
import { registerContext, mizanCall, mizanFetch } from '@mizan/runtime'
import { fetchGlobalContext, type GlobalContextData, type GlobalContextParams, fetchLocalContext, type LocalContextData, type LocalContextParams, callEcho, callAdd, callWhoami, callHttpOnlyEcho, callStaffOnly, callSuperuserOnly, callVerifiedOnly, callMultiply, callNotImplementedFn, callBuggyFn, callPermissionCheckFn, callWsWhoami, callJwtObtain, callJwtRefresh } from '../index'
// Global context — fetched once at app init
const GlobalCtx = createContext<GlobalContextData | null>(null)
export function GlobalContextProvider({ children }: { children: ReactNode }) {
const [data, setData] = useState<GlobalContextData | null>(() => {
if (typeof window === 'undefined') return null
const ssr = (window as any).__MIZAN_SSR_DATA__
return ssr ?? null
})
const refetch = useCallback(async () => {
const result = await fetchGlobalContext({} as any)
setData(result)
}, [])
useEffect(() => { if (!data) refetch() }, [data, refetch])
useEffect(() => registerContext('global', {}, refetch), [refetch])
return <GlobalCtx.Provider value={data}>{children}</GlobalCtx.Provider>
}
export function useCurrentUser(): currentUserOutput {
const ctx = useContext(GlobalCtx)
if (!ctx) throw new Error('useCurrentUser requires GlobalContextProvider')
return ctx.current_user
}
// Local context
const LocalCtx = createContext<LocalContextData | null>(null)
export function LocalContext({ children, ...params }: LocalContextParams & { children: ReactNode }) {
const [data, setData] = useState<LocalContextData | null>(() => {
if (typeof window === 'undefined') return null
const ssr = (window as any).__MIZAN_SSR_DATA__
if (ssr?.greet !== undefined) return ssr
return null
})
const refetch = useCallback(async () => {
const result = await fetchLocalContext(params)
setData(result)
}, [params.name])
useEffect(() => { refetch() }, [refetch])
useEffect(() => registerContext('local', params, refetch), [params.name, refetch])
return <LocalCtx.Provider value={data}>{children}</LocalCtx.Provider>
}
export function useGreet(): greetOutput | null {
const ctx = useContext(LocalCtx)
return ctx?.greet ?? null
}
export function useEcho() {
return useCallback((args: Parameters<typeof callEcho>[0]) => callEcho(args), [])
}
export function useAdd() {
return useCallback((args: Parameters<typeof callAdd>[0]) => callAdd(args), [])
}
export function useWhoami() {
return useCallback(() => callWhoami(), [])
}
export function useHttpOnlyEcho() {
return useCallback((args: Parameters<typeof callHttpOnlyEcho>[0]) => callHttpOnlyEcho(args), [])
}
export function useStaffOnly() {
return useCallback(() => callStaffOnly(), [])
}
export function useSuperuserOnly() {
return useCallback(() => callSuperuserOnly(), [])
}
export function useVerifiedOnly() {
return useCallback(() => callVerifiedOnly(), [])
}
export function useMultiply() {
return useCallback((args: Parameters<typeof callMultiply>[0]) => callMultiply(args), [])
}
export function useNotImplementedFn() {
return useCallback(() => callNotImplementedFn(), [])
}
export function useBuggyFn() {
return useCallback(() => callBuggyFn(), [])
}
export function usePermissionCheckFn() {
return useCallback((args: Parameters<typeof callPermissionCheckFn>[0]) => callPermissionCheckFn(args), [])
}
export function useWsWhoami() {
return useCallback(() => callWsWhoami(), [])
}
export function useJwtObtain() {
return useCallback(() => callJwtObtain(), [])
}
export function useJwtRefresh() {
return useCallback((args: Parameters<typeof callJwtRefresh>[0]) => callJwtRefresh(args), [])
}

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// AUTO-GENERATED by mizan — do not edit
import { writable, derived, type Readable } from 'svelte/store'
import { registerContext } from '@mizan/runtime'
import { fetchGlobalContext, type GlobalContextData, type GlobalContextParams, fetchLocalContext, type LocalContextData, type LocalContextParams, callEcho, callAdd, callWhoami, callHttpOnlyEcho, callStaffOnly, callSuperuserOnly, callVerifiedOnly, callMultiply, callNotImplementedFn, callBuggyFn, callPermissionCheckFn, callWsWhoami, callJwtObtain, callJwtRefresh } from '../index'
// Global context
export function createGlobalContext() {
const data = writable<GlobalContextData | null>(null)
const loading = writable(true)
const refetch = async () => {
loading.set(true)
const result = await fetchGlobalContext({} as any)
data.set(result)
loading.set(false)
}
refetch()
const unregister = registerContext('global', {}, refetch)
return {
data,
loading,
currentUser: derived(data, $d => $d?.current_user ?? null) as Readable<currentUserOutput | null>,
destroy: unregister,
}
}
// Local context
export function createLocalContext(params: LocalContextParams) {
const data = writable<LocalContextData | null>(null)
const loading = writable(true)
const refetch = async () => {
loading.set(true)
const result = await fetchLocalContext(params)
data.set(result)
loading.set(false)
}
refetch()
const unregister = registerContext('local', params, refetch)
return {
data,
loading,
greet: derived(data, $d => $d?.greet ?? null) as Readable<greetOutput | null>,
destroy: unregister,
}
}
export { callEcho } from '../functions/echo'
export { callAdd } from '../functions/add'
export { callWhoami } from '../functions/whoami'
export { callHttpOnlyEcho } from '../functions/httpOnlyEcho'
export { callStaffOnly } from '../functions/staffOnly'
export { callSuperuserOnly } from '../functions/superuserOnly'
export { callVerifiedOnly } from '../functions/verifiedOnly'
export { callMultiply } from '../functions/multiply'
export { callNotImplementedFn } from '../functions/notImplementedFn'
export { callBuggyFn } from '../functions/buggyFn'
export { callPermissionCheckFn } from '../functions/permissionCheckFn'
export { callWsWhoami } from '../functions/wsWhoami'
export { callJwtObtain } from '../functions/jwtObtain'
export { callJwtRefresh } from '../functions/jwtRefresh'

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@@ -0,0 +1,96 @@
// AUTO-GENERATED by mizan — do not edit
import { ref, computed, watch, onMounted, onUnmounted, provide, inject, type Ref, type ComputedRef, type InjectionKey } from 'vue'
import { registerContext } from '@mizan/runtime'
import { fetchGlobalContext, type GlobalContextData, type GlobalContextParams, fetchLocalContext, type LocalContextData, type LocalContextParams, callEcho, callAdd, callWhoami, callHttpOnlyEcho, callStaffOnly, callSuperuserOnly, callVerifiedOnly, callMultiply, callNotImplementedFn, callBuggyFn, callPermissionCheckFn, callWsWhoami, callJwtObtain, callJwtRefresh } from '../index'
// Global context
const GlobalKey: InjectionKey<{ data: Ref<GlobalContextData | null>, loading: Ref<boolean> }> = Symbol('global')
export function provideGlobalContext() {
const data = ref<GlobalContextData | null>(null)
const loading = ref(true)
const refetch = async () => {
loading.value = true
try {
data.value = await fetchGlobalContext({} as any)
} catch (e) { console.error('[mizan] global fetch failed:', e) }
loading.value = false
}
let unregister: (() => void) | null = null
onMounted(() => {
refetch()
unregister = registerContext('global', {}, refetch)
})
onUnmounted(() => { unregister?.() })
provide(GlobalKey, { data, loading })
}
export function useCurrentUser(): ComputedRef<currentUserOutput | null> {
const ctx = inject(GlobalKey)
if (!ctx) throw new Error('useCurrentUser requires provideGlobalContext in a parent')
return computed(() => ctx.data.value?.current_user ?? null)
}
// Local context
const LocalKey: InjectionKey<{ data: Ref<LocalContextData | null>, loading: Ref<boolean> }> = Symbol('local')
export function provideLocalContext(params: { name: string }) {
const data = ref<LocalContextData | null>(null)
const loading = ref(true)
const refetch = async () => {
loading.value = true
try {
data.value = await fetchLocalContext(params as any)
} catch (e) { console.error('[mizan] local fetch failed:', e) }
loading.value = false
}
let unregister: (() => void) | null = null
onMounted(() => {
refetch()
unregister = registerContext('local', params, refetch)
})
onUnmounted(() => { unregister?.() })
provide(LocalKey, { data, loading })
}
export function useGreet(): ComputedRef<greetOutput | null> {
const ctx = inject(LocalKey)
if (!ctx) throw new Error('useGreet requires provideLocalContext in a parent')
return computed(() => ctx.data.value?.greet ?? null)
}
export const useEcho = callEcho
export const useAdd = callAdd
export const useWhoami = callWhoami
export const useHttpOnlyEcho = callHttpOnlyEcho
export const useStaffOnly = callStaffOnly
export const useSuperuserOnly = callSuperuserOnly
export const useVerifiedOnly = callVerifiedOnly
export const useMultiply = callMultiply
export const useNotImplementedFn = callNotImplementedFn
export const useBuggyFn = callBuggyFn
export const usePermissionCheckFn = callPermissionCheckFn
export const useWsWhoami = callWsWhoami
export const useJwtObtain = callJwtObtain
export const useJwtRefresh = callJwtRefresh

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@@ -2,282 +2,222 @@
/** /**
* mizan Code Generator CLI * mizan Code Generator CLI
* *
* Generate TypeScript types, React provider, and hooks from Django schemas. * Two-stage codegen:
* Stage 1: Framework-agnostic types + fetch/mutation functions
* Stage 2: Framework-specific wrappers (React hooks, Vue composables, Svelte stores)
* *
* Usage: * Usage:
* npx mizan-generate # Run once * npx mizan-generate # React (default)
* npx mizan-generate --watch # Watch mode * npx mizan-generate --target vue # Vue
* npx mizan-generate --target react,vue,svelte # All three
*/ */
import { promises as fs } from 'fs' import { promises as fs } from 'fs'
import path from 'path' import path from 'path'
import { fetchChannelsSchema, fetchMizanSchema } from './lib/fetch.mjs' import { fetchChannelsSchema, fetchMizanSchema } from './lib/fetch.mjs'
import { generateMizanFiles } from './lib/mizan.mjs' import { generateTypes, generateContextFile, generateMutationFile, generateFunctionFile, generateStage1Index } from './lib/stage1.mjs'
import { generateReactAdapter } from './lib/adapters/react.mjs'
import { generateVueAdapter } from './lib/adapters/vue.mjs'
import { generateSvelteAdapter } from './lib/adapters/svelte.mjs'
import { generateChannelsFiles } from './lib/channels.mjs' import { generateChannelsFiles } from './lib/channels.mjs'
import { generateIndex } from './lib/index.mjs'
// Use cwd — the script runs via `npx mizan-generate` from the frontend root
const frontendDir = process.cwd() const frontendDir = process.cwd()
/**
* Load configuration from django.config.mjs
*/
async function loadConfig(configPath) { async function loadConfig(configPath) {
const fullPath = path.resolve(frontendDir, configPath) const fullPath = path.resolve(frontendDir, configPath)
try { await fs.access(fullPath) } catch { throw new Error(`Config not found: ${fullPath}`) }
try { const fileUrl = new URL(`file://${fullPath.replace(/\\/g, '/')}`)
await fs.access(fullPath)
} catch {
throw new Error(`Config file not found: ${fullPath}`)
}
// Convert to file:// URL for Windows compatibility
const fileUrl = new URL(`file://${fullPath.replace(/\\/g, '/')}`)
if (configPath.endsWith('.mjs') || configPath.endsWith('.js')) {
const module = await import(fileUrl) const module = await import(fileUrl)
return module.default return module.default
}
if (configPath.endsWith('.ts')) {
try {
const module = await import(fileUrl)
return module.default
} catch {
throw new Error(
`Cannot load TypeScript config directly. Either:\n` +
` 1. Install tsx: npm install -D tsx\n` +
` 2. Use django.config.mjs instead`
)
}
}
throw new Error(`Unsupported config file format: ${configPath}`)
} }
/**
* Write generated code to file.
*/
async function writeOutput(filePath, content) { async function writeOutput(filePath, content) {
const dir = path.dirname(filePath) const dir = path.dirname(filePath)
await fs.mkdir(dir, { recursive: true }) await fs.mkdir(dir, { recursive: true })
await fs.writeFile(filePath, content, 'utf8') await fs.writeFile(filePath, content, 'utf8')
}
function pascalCase(str) {
return str.split(/[.\-_]/).map(p => p.charAt(0).toUpperCase() + p.slice(1)).join('')
} }
/**
* Run schema generation.
*/
async function generate(config, options = {}) { async function generate(config, options = {}) {
const { output } = options const { output, target: targetFlag } = options
const outputDir = output || config.output || 'src/api'
const targets = (targetFlag || config.target || 'react').split(',').map(t => t.trim())
console.log('[mizan] Starting schema generation...') console.log(`[mizan] Starting generation (targets: ${targets.join(', ')})...`)
const outputPath = output || config.output || 'src/api/generated.ts' const fullOutputDir = path.resolve(frontendDir, outputDir)
let mizanSchema = null
let channelsSchema = null
let channelsSchema = null // ── Channels (React-only for now) ───────────────────────────────────
let mizanSchema = null
// Fetch and generate channels if available
try {
console.log('[mizan] Fetching channels schema...')
channelsSchema = await fetchChannelsSchema(config.source, frontendDir)
const channelCount = channelsSchema['x-mizan-channels']?.length || 0
if (channelCount > 0) {
console.log(`[mizan] Found ${channelCount} channels`)
const channelsTypesPath = outputPath.replace(/\.ts$/, '.channels.ts')
const fullChannelsTypesPath = path.resolve(frontendDir, channelsTypesPath)
const channelsHooksPath = outputPath.replace(/\.ts$/, '.channels.hooks.tsx')
const fullChannelsHooksPath = path.resolve(frontendDir, channelsHooksPath)
const channelsSchemaPath = outputPath.replace(/\.ts$/, '.channels.schema.json')
const fullChannelsSchemaPath = path.resolve(frontendDir, channelsSchemaPath)
const { types: channelsTypes, hooks: channelsHooks } = await generateChannelsFiles(channelsSchema)
console.log(`[mizan] Generating -> ${channelsTypesPath}`)
await writeOutput(fullChannelsTypesPath, channelsTypes)
if (channelsHooks) {
console.log(`[mizan] Generating -> ${channelsHooksPath}`)
await writeOutput(fullChannelsHooksPath, channelsHooks)
}
console.log(`[mizan] Generating -> ${channelsSchemaPath}`)
await writeOutput(fullChannelsSchemaPath, JSON.stringify(channelsSchema, null, 2))
} else {
console.log('[mizan] No channels registered, skipping channels generation')
}
} catch (err) {
console.log(`[mizan] Channels schema not available: ${err.message}`)
}
// Fetch and generate mizan files
try {
console.log('[mizan] Fetching mizan schema...')
mizanSchema = await fetchMizanSchema(config.source, frontendDir)
const functionCount = mizanSchema['x-mizan-functions']?.length || 0
if (functionCount > 0) {
console.log(`[mizan] Found ${functionCount} mizan functions`)
const mizanTypesPath = outputPath.replace(/\.ts$/, '.mizan.ts')
const fullMizanTypesPath = path.resolve(frontendDir, mizanTypesPath)
const mizanProviderPath = outputPath.replace(/\.ts$/, '.provider.tsx')
const fullMizanProviderPath = path.resolve(frontendDir, mizanProviderPath)
const mizanServerPath = outputPath.replace(/\.ts$/, '.server.ts')
const fullMizanServerPath = path.resolve(frontendDir, mizanServerPath)
const mizanFormsPath = outputPath.replace(/\.ts$/, '.forms.ts')
const fullMizanFormsPath = path.resolve(frontendDir, mizanFormsPath)
const mizanSchemaPath = outputPath.replace(/\.ts$/, '.mizan.schema.json')
const fullMizanSchemaPath = path.resolve(frontendDir, mizanSchemaPath)
const hasChannels = (channelsSchema?.['x-mizan-channels']?.length || 0) > 0
const { types: mizanTypes, provider: mizanProvider, server: mizanServer, forms: mizanForms } = await generateMizanFiles(mizanSchema, { hasChannels })
console.log(`[mizan] Generating -> ${mizanTypesPath}`)
await writeOutput(fullMizanTypesPath, mizanTypes)
if (mizanProvider) {
console.log(`[mizan] Generating -> ${mizanProviderPath}`)
await writeOutput(fullMizanProviderPath, mizanProvider)
}
if (mizanServer) {
console.log(`[mizan] Generating -> ${mizanServerPath}`)
await writeOutput(fullMizanServerPath, mizanServer)
}
if (mizanForms) {
console.log(`[mizan] Generating -> ${mizanFormsPath}`)
await writeOutput(fullMizanFormsPath, mizanForms)
}
console.log(`[mizan] Generating -> ${mizanSchemaPath}`)
await writeOutput(fullMizanSchemaPath, JSON.stringify(mizanSchema, null, 2))
} else {
console.log('[mizan] No mizan functions registered, skipping mizan generation')
}
} catch (err) {
console.log(`[mizan] mizan schema not available: ${err.message}`)
}
// Generate consolidated index.ts
const indexPath = path.dirname(outputPath) + '/index.ts'
const fullIndexPath = path.resolve(frontendDir, indexPath)
console.log(`[mizan] Generating -> ${indexPath}`)
const indexContent = generateIndex({
channelsSchema,
mizanSchema,
})
await writeOutput(fullIndexPath, indexContent)
console.log('[mizan] Generation complete!')
}
/**
* Watch for changes and regenerate.
*/
async function watch(config, options) {
const debounce = config.watch?.debounce || 1000
let timeout = null
let running = false
async function runGenerate() {
if (running) {
timeout = setTimeout(runGenerate, debounce)
return
}
running = true
try { try {
await generate(config, options) console.log('[mizan] Fetching channels schema...')
channelsSchema = await fetchChannelsSchema(config.source, frontendDir)
const channelCount = channelsSchema['x-mizan-channels']?.length || 0
if (channelCount > 0 && targets.includes('react')) {
console.log(`[mizan] Found ${channelCount} channels`)
const { types, hooks } = await generateChannelsFiles(channelsSchema)
await writeOutput(path.join(fullOutputDir, 'channels.ts'), types)
if (hooks) await writeOutput(path.join(fullOutputDir, 'channels.hooks.tsx'), hooks)
}
} catch (err) { } catch (err) {
console.error('[mizan] Generation failed:', err.message) console.log(`[mizan] Channels not available: ${err.message}`)
} finally {
running = false
} }
}
await runGenerate() // ── Mizan functions ─────────────────────────────────────────────────
console.log('[mizan] Watching for changes (press Ctrl+C to stop)...') try {
console.log('[mizan] Fetching mizan schema...')
mizanSchema = await fetchMizanSchema(config.source, frontendDir)
if (config.source.django) { const functions = mizanSchema['x-mizan-functions'] || []
const { watch: chokidarWatch } = await import('chokidar') const contextGroups = mizanSchema['x-mizan-contexts'] || {}
const djangoDir = path.resolve(frontendDir, path.dirname(config.source.django.managePath))
const watcher = chokidarWatch([ if (functions.length === 0) {
path.join(djangoDir, '**/*.py'), console.log('[mizan] No functions registered')
], { return
ignored: [ }
'**/node_modules/**',
'**/__pycache__/**',
'**/migrations/**',
'**/.venv/**',
],
ignoreInitial: true,
})
watcher.on('change', (filePath) => { console.log(`[mizan] Found ${functions.length} functions`)
console.log(`[mizan] Detected change: ${path.relative(djangoDir, filePath)}`)
if (timeout) clearTimeout(timeout)
timeout = setTimeout(runGenerate, debounce)
})
}
process.on('SIGINT', () => { // ── Stage 1: Framework-agnostic ─────────────────────────────────
console.log('\n[mizan] Stopping watch mode...')
process.exit(0) // Types
}) const types = await generateTypes(mizanSchema)
await writeOutput(path.join(fullOutputDir, 'types.ts'), types)
console.log('[mizan] Stage 1 -> types.ts')
// Context files
await fs.mkdir(path.join(fullOutputDir, 'contexts'), { recursive: true })
for (const [ctxName, ctxMeta] of Object.entries(contextGroups)) {
const content = generateContextFile(ctxName, ctxMeta, functions)
await writeOutput(path.join(fullOutputDir, 'contexts', `${ctxName}.ts`), content)
console.log(`[mizan] Stage 1 -> contexts/${ctxName}.ts`)
}
// Mutation + function files
const regularFns = functions.filter(fn => !fn.isContext && !fn.isForm)
if (regularFns.length > 0) {
await fs.mkdir(path.join(fullOutputDir, 'mutations'), { recursive: true })
await fs.mkdir(path.join(fullOutputDir, 'functions'), { recursive: true })
for (const fn of regularFns) {
const dir = fn.affects ? 'mutations' : 'functions'
const content = fn.affects ? generateMutationFile(fn) : generateFunctionFile(fn)
await writeOutput(path.join(fullOutputDir, dir, `${fn.camelName}.ts`), content)
console.log(`[mizan] Stage 1 -> ${dir}/${fn.camelName}.ts`)
}
}
// Stage 1 index
const stage1Index = generateStage1Index(mizanSchema)
await writeOutput(path.join(fullOutputDir, 'index.ts'), stage1Index)
console.log('[mizan] Stage 1 -> index.ts')
// ── Stage 2: Framework-specific ─────────────────────────────────
for (const target of targets) {
let content
let filename
switch (target) {
case 'react':
content = generateReactAdapter(mizanSchema)
filename = 'react.tsx'
break
case 'vue':
content = generateVueAdapter(mizanSchema)
filename = 'vue.ts'
break
case 'svelte':
content = generateSvelteAdapter(mizanSchema)
filename = 'svelte.ts'
break
default:
console.warn(`[mizan] Unknown target: ${target}`)
continue
}
if (content) {
await writeOutput(path.join(fullOutputDir, filename), content)
console.log(`[mizan] Stage 2 -> ${filename}`)
}
}
// Schema JSON
await writeOutput(
path.join(fullOutputDir, 'schema.json'),
JSON.stringify(mizanSchema, null, 2),
)
} catch (err) {
console.log(`[mizan] Schema not available: ${err.message}`)
}
console.log('[mizan] Generation complete!')
} }
/**
* Main entry point.
*/
async function main() { async function main() {
const args = process.argv.slice(2) const args = process.argv.slice(2)
let configPath = 'django.config.mjs' let configPath = 'django.config.mjs'
let watchMode = false let watchMode = false
let output = null let output = null
let target = null
for (let i = 0; i < args.length; i++) { for (let i = 0; i < args.length; i++) {
if (args[i] === '--config' || args[i] === '-c') { if (args[i] === '--config' || args[i] === '-c') configPath = args[++i]
configPath = args[++i] else if (args[i] === '--watch' || args[i] === '-w') watchMode = true
} else if (args[i] === '--watch' || args[i] === '-w') { else if (args[i] === '--output' || args[i] === '-o') output = args[++i]
watchMode = true else if (args[i] === '--target' || args[i] === '-t') target = args[++i]
} else if (args[i] === '--output' || args[i] === '-o') { else if (args[i] === '--help' || args[i] === '-h') {
output = args[++i] console.log(`
} else if (args[i] === '--help' || args[i] === '-h') { mizan Code Generator
console.log(`
mizan Code Generator - Generate TypeScript from Django schemas
Usage: Usage:
npx mizan-generate [options] npx mizan-generate [options]
Options: Options:
-c, --config <path> Config file path (default: django.config.mjs) -c, --config <path> Config file (default: django.config.mjs)
-w, --watch Watch mode - regenerate on changes -t, --target <targets> Comma-separated: react,vue,svelte (default: react)
-o, --output <path> Output file path (overrides config) -o, --output <dir> Output directory (default: src/api)
-h, --help Show this help message -w, --watch Watch mode
`) -h, --help Show help
process.exit(0) `)
process.exit(0)
}
} }
}
const config = await loadConfig(configPath) const config = await loadConfig(configPath)
const options = { output } const options = { output, target }
if (watchMode) { if (watchMode) {
await watch(config, options) await generate(config, options)
} else { console.log('[mizan] Watching for changes...')
await generate(config, options) const { watch: chokidarWatch } = await import('chokidar')
} if (config.source.django) {
const djangoDir = path.resolve(frontendDir, path.dirname(config.source.django.managePath))
let timeout = null
const watcher = chokidarWatch([path.join(djangoDir, '**/*.py')], {
ignored: ['**/node_modules/**', '**/__pycache__/**', '**/migrations/**'],
ignoreInitial: true,
})
watcher.on('change', () => {
if (timeout) clearTimeout(timeout)
timeout = setTimeout(() => generate(config, options), 1000)
})
}
process.on('SIGINT', () => process.exit(0))
} else {
await generate(config, options)
}
} }
main().catch(err => { main().catch(err => {
console.error('[mizan] Error:', err.message) console.error('[mizan] Error:', err.message)
process.exit(1) process.exit(1)
}) })

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@@ -0,0 +1,160 @@
/**
* React Stage 2 — Generates hooks + context providers from Stage 1 output.
*/
function pascalCase(str) {
return str.split(/[.\-_]/).map(p => p.charAt(0).toUpperCase() + p.slice(1)).join('')
}
export function generateReactAdapter(schema) {
const functions = schema['x-mizan-functions'] || []
const contextGroups = schema['x-mizan-contexts'] || {}
const namedContexts = Object.entries(contextGroups).filter(([n]) => n !== 'global')
const globalContexts = functions.filter(fn => fn.isContext === 'global')
const mutations = functions.filter(fn => !fn.isContext && !fn.isForm && fn.affects)
const plainFns = functions.filter(fn => !fn.isContext && !fn.isForm && !fn.affects)
const lines = [
"'use client'",
'',
'// AUTO-GENERATED by mizan — do not edit',
'',
"import { createContext, useContext, useState, useEffect, useCallback, type ReactNode } from 'react'",
"import { registerContext, mizanCall, mizanFetch } from '@mizan/runtime'",
'',
]
// Import from Stage 1
const stage1Imports = []
for (const [ctxName] of Object.entries(contextGroups)) {
const p = pascalCase(ctxName)
stage1Imports.push(`fetch${p}Context`, `type ${p}ContextData`, `type ${p}ContextParams`)
}
for (const fn of [...mutations, ...plainFns]) {
stage1Imports.push(`call${pascalCase(fn.camelName)}`)
}
if (stage1Imports.length > 0) {
lines.push(`import { ${stage1Imports.join(', ')} } from '../index'`)
lines.push('')
}
// ── Global context hooks ────────────────────────────────────────────
if (globalContexts.length > 0) {
const p = pascalCase('global')
lines.push(`// Global context — fetched once at app init`)
lines.push(`const GlobalCtx = createContext<${p}ContextData | null>(null)`)
lines.push('')
lines.push(`export function GlobalContextProvider({ children }: { children: ReactNode }) {`)
lines.push(` const [data, setData] = useState<${p}ContextData | null>(() => {`)
lines.push(` if (typeof window === 'undefined') return null`)
lines.push(` const ssr = (window as any).__MIZAN_SSR_DATA__`)
lines.push(` return ssr ?? null`)
lines.push(` })`)
lines.push('')
lines.push(` const refetch = useCallback(async () => {`)
lines.push(` const result = await fetch${p}Context({} as any)`)
lines.push(` setData(result)`)
lines.push(` }, [])`)
lines.push('')
lines.push(` useEffect(() => { if (!data) refetch() }, [data, refetch])`)
lines.push(` useEffect(() => registerContext('global', {}, refetch), [refetch])`)
lines.push('')
lines.push(` return <GlobalCtx.Provider value={data}>{children}</GlobalCtx.Provider>`)
lines.push('}')
lines.push('')
for (const fn of globalContexts) {
const hookPascal = pascalCase(fn.camelName)
lines.push(`export function use${hookPascal}(): ${fn.outputType} {`)
lines.push(` const ctx = useContext(GlobalCtx)`)
lines.push(` if (!ctx) throw new Error('use${hookPascal} requires GlobalContextProvider')`)
lines.push(` return ctx.${fn.name}`)
lines.push('}')
lines.push('')
}
}
// ── Named context providers ─────────────────────────────────────────
for (const [ctxName, ctxMeta] of namedContexts) {
const p = pascalCase(ctxName)
const ctxFunctions = functions.filter(fn => fn.isContext === ctxName)
const paramEntries = Object.entries(ctxMeta.params || {})
lines.push(`// ${p} context`)
lines.push(`const ${p}Ctx = createContext<${p}ContextData | null>(null)`)
lines.push('')
// Provider
lines.push(`export function ${p}Context({ children, ...params }: ${p}ContextParams & { children: ReactNode }) {`)
lines.push(` const [data, setData] = useState<${p}ContextData | null>(() => {`)
lines.push(` if (typeof window === 'undefined') return null`)
lines.push(` const ssr = (window as any).__MIZAN_SSR_DATA__`)
if (ctxFunctions.length > 0) {
lines.push(` if (ssr?.${ctxFunctions[0].name} !== undefined) return ssr`)
}
lines.push(` return null`)
lines.push(` })`)
lines.push('')
lines.push(` const refetch = useCallback(async () => {`)
lines.push(` const result = await fetch${p}Context(params)`)
lines.push(` setData(result)`)
const deps = paramEntries.map(([pName]) => `params.${pName}`)
lines.push(` }, [${deps.join(', ')}])`)
lines.push('')
lines.push(` useEffect(() => { refetch() }, [refetch])`)
lines.push(` useEffect(() => registerContext('${ctxName}', params, refetch), [${deps.join(', ')}, refetch])`)
lines.push('')
lines.push(` return <${p}Ctx.Provider value={data}>{children}</${p}Ctx.Provider>`)
lines.push('}')
lines.push('')
// Hooks
for (const fn of ctxFunctions) {
const hookPascal = pascalCase(fn.camelName)
lines.push(`export function use${hookPascal}(): ${fn.outputType} | null {`)
lines.push(` const ctx = useContext(${p}Ctx)`)
lines.push(` return ctx?.${fn.name} ?? null`)
lines.push('}')
lines.push('')
}
}
// ── Mutation hooks ──────────────────────────────────────────────────
for (const fn of mutations) {
const p = pascalCase(fn.camelName)
if (fn.hasInput) {
lines.push(`export function use${p}() {`)
lines.push(` return useCallback((args: Parameters<typeof call${p}>[0]) => call${p}(args), [])`)
lines.push('}')
} else {
lines.push(`export function use${p}() {`)
lines.push(` return useCallback(() => call${p}(), [])`)
lines.push('}')
}
lines.push('')
}
// ── Plain function hooks ────────────────────────────────────────────
for (const fn of plainFns) {
const p = pascalCase(fn.camelName)
if (fn.hasInput) {
lines.push(`export function use${p}() {`)
lines.push(` return useCallback((args: Parameters<typeof call${p}>[0]) => call${p}(args), [])`)
lines.push('}')
} else {
lines.push(`export function use${p}() {`)
lines.push(` return useCallback(() => call${p}(), [])`)
lines.push('}')
}
lines.push('')
}
return lines.join('\n')
}

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/**
* Svelte Stage 2 — Generates stores from Stage 1 output.
*/
function pascalCase(str) {
return str.split(/[.\-_]/).map(p => p.charAt(0).toUpperCase() + p.slice(1)).join('')
}
export function generateSvelteAdapter(schema) {
const functions = schema['x-mizan-functions'] || []
const contextGroups = schema['x-mizan-contexts'] || {}
const mutations = functions.filter(fn => !fn.isContext && !fn.isForm && fn.affects)
const plainFns = functions.filter(fn => !fn.isContext && !fn.isForm && !fn.affects)
const lines = [
'// AUTO-GENERATED by mizan — do not edit',
'',
"import { writable, derived, type Readable } from 'svelte/store'",
"import { registerContext } from '@mizan/runtime'",
'',
]
// Stage 1 imports
const stage1Imports = []
for (const [ctxName] of Object.entries(contextGroups)) {
const p = pascalCase(ctxName)
stage1Imports.push(`fetch${p}Context`, `type ${p}ContextData`, `type ${p}ContextParams`)
}
for (const fn of [...mutations, ...plainFns]) {
stage1Imports.push(`call${pascalCase(fn.camelName)}`)
}
if (stage1Imports.length > 0) {
lines.push(`import { ${stage1Imports.join(', ')} } from '../index'`)
lines.push('')
}
// ── Context stores ──────────────────────────────────────────────────
for (const [ctxName, ctxMeta] of Object.entries(contextGroups)) {
const p = pascalCase(ctxName)
const ctxFunctions = functions.filter(fn => fn.isContext === ctxName)
const paramEntries = Object.entries(ctxMeta.params || {})
lines.push(`// ${p} context`)
if (paramEntries.length > 0) {
lines.push(`export function create${p}Context(params: ${p}ContextParams) {`)
} else {
lines.push(`export function create${p}Context() {`)
}
lines.push(` const data = writable<${p}ContextData | null>(null)`)
lines.push(` const loading = writable(true)`)
lines.push('')
lines.push(` const refetch = async () => {`)
lines.push(` loading.set(true)`)
if (paramEntries.length > 0) {
lines.push(` const result = await fetch${p}Context(params)`)
} else {
lines.push(` const result = await fetch${p}Context({} as any)`)
}
lines.push(` data.set(result)`)
lines.push(` loading.set(false)`)
lines.push(` }`)
lines.push('')
lines.push(` refetch()`)
if (paramEntries.length > 0) {
lines.push(` const unregister = registerContext('${ctxName}', params, refetch)`)
} else {
lines.push(` const unregister = registerContext('${ctxName}', {}, refetch)`)
}
lines.push('')
// Derived stores for each function
lines.push(` return {`)
lines.push(` data,`)
lines.push(` loading,`)
for (const fn of ctxFunctions) {
const camel = fn.camelName
lines.push(` ${camel}: derived(data, $d => $d?.${fn.name} ?? null) as Readable<${fn.outputType} | null>,`)
}
lines.push(` destroy: unregister,`)
lines.push(` }`)
lines.push('}')
lines.push('')
}
// ── Mutation + function exports ─────────────────────────────────────
for (const fn of [...mutations, ...plainFns]) {
const p = pascalCase(fn.camelName)
lines.push(`export { call${p} } from '../${fn.affects ? 'mutations' : 'functions'}/${fn.camelName}'`)
}
lines.push('')
return lines.join('\n')
}

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/**
* Vue Stage 2 — Generates composables from Stage 1 output.
*/
function pascalCase(str) {
return str.split(/[.\-_]/).map(p => p.charAt(0).toUpperCase() + p.slice(1)).join('')
}
export function generateVueAdapter(schema) {
const functions = schema['x-mizan-functions'] || []
const contextGroups = schema['x-mizan-contexts'] || {}
const mutations = functions.filter(fn => !fn.isContext && !fn.isForm && fn.affects)
const plainFns = functions.filter(fn => !fn.isContext && !fn.isForm && !fn.affects)
const lines = [
'// AUTO-GENERATED by mizan — do not edit',
'',
"import { ref, computed, watch, onMounted, onUnmounted, provide, inject, type Ref, type ComputedRef, type InjectionKey } from 'vue'",
"import { registerContext } from '@mizan/runtime'",
'',
]
// Stage 1 imports
const stage1Imports = []
for (const [ctxName] of Object.entries(contextGroups)) {
const p = pascalCase(ctxName)
stage1Imports.push(`fetch${p}Context`, `type ${p}ContextData`, `type ${p}ContextParams`)
}
for (const fn of [...mutations, ...plainFns]) {
stage1Imports.push(`call${pascalCase(fn.camelName)}`)
}
if (stage1Imports.length > 0) {
lines.push(`import { ${stage1Imports.join(', ')} } from '../index'`)
lines.push('')
}
// ── Context composables ─────────────────────────────────────────────
for (const [ctxName, ctxMeta] of Object.entries(contextGroups)) {
const p = pascalCase(ctxName)
const ctxFunctions = functions.filter(fn => fn.isContext === ctxName)
const paramEntries = Object.entries(ctxMeta.params || {})
lines.push(`// ${p} context`)
lines.push(`const ${p}Key: InjectionKey<{ data: Ref<${p}ContextData | null>, loading: Ref<boolean> }> = Symbol('${ctxName}')`)
lines.push('')
// Provider composable
if (paramEntries.length > 0) {
lines.push(`export function provide${p}Context(params: { ${paramEntries.map(([k, v]) => `${k}: ${v.type === 'integer' || v.type === 'number' ? 'number' : 'string'}`).join(', ')} }) {`)
} else {
lines.push(`export function provide${p}Context() {`)
}
lines.push(` const data = ref<${p}ContextData | null>(null)`)
lines.push(` const loading = ref(true)`)
lines.push('')
lines.push(` const refetch = async () => {`)
lines.push(` loading.value = true`)
lines.push(` try {`)
if (paramEntries.length > 0) {
lines.push(` data.value = await fetch${p}Context(params as any)`)
} else {
lines.push(` data.value = await fetch${p}Context({} as any)`)
}
lines.push(` } catch (e) { console.error('[mizan] ${ctxName} fetch failed:', e) }`)
lines.push(` loading.value = false`)
lines.push(` }`)
lines.push('')
lines.push(` let unregister: (() => void) | null = null`)
lines.push(` onMounted(() => {`)
lines.push(` refetch()`)
if (paramEntries.length > 0) {
lines.push(` unregister = registerContext('${ctxName}', params, refetch)`)
} else {
lines.push(` unregister = registerContext('${ctxName}', {}, refetch)`)
}
lines.push(` })`)
lines.push(` onUnmounted(() => { unregister?.() })`)
lines.push('')
lines.push(` provide(${p}Key, { data, loading })`)
lines.push('}')
lines.push('')
// Consumer composables
for (const fn of ctxFunctions) {
const hookPascal = pascalCase(fn.camelName)
lines.push(`export function use${hookPascal}(): ComputedRef<${fn.outputType} | null> {`)
lines.push(` const ctx = inject(${p}Key)`)
lines.push(` if (!ctx) throw new Error('use${hookPascal} requires provide${p}Context in a parent')`)
lines.push(` return computed(() => ctx.data.value?.${fn.name} ?? null)`)
lines.push('}')
lines.push('')
}
}
// ── Mutation composables ────────────────────────────────────────────
for (const fn of [...mutations, ...plainFns]) {
const p = pascalCase(fn.camelName)
lines.push(`export const use${p} = call${p}`)
lines.push('')
}
return lines.join('\n')
}

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/**
* Stage 1 Codegen — Framework-agnostic TypeScript output.
*
* Produces:
* types.ts — interfaces from OpenAPI schema
* contexts/<name>.ts — fetchXxxContext(params) per context group
* mutations/<name>.ts — callXxx(args) per mutation
* functions/<name>.ts — callXxx(args) per plain function
* index.ts — re-exports
*/
import openapiTS, { astToString } from 'openapi-typescript'
// ─── Helpers ────────────────────────────────────────────────────────────────
function pascalCase(str) {
return str
.split(/[.\-_]/)
.map(part => part.charAt(0).toUpperCase() + part.slice(1))
.join('')
}
function camelCase(str) {
const p = pascalCase(str)
return p.charAt(0).toLowerCase() + p.slice(1)
}
// TypeScript SyntaxKind values for openapi-typescript AST
const SyntaxKind = {
InterfaceDeclaration: 265,
PropertySignature: 172,
Identifier: 80,
}
function idName(node) {
return node?.kind === SyntaxKind.Identifier ? node.escapedText : undefined
}
function getSchemaNamesFromAst(ast) {
if (!Array.isArray(ast)) return []
const componentsNode = ast.find(
n => n?.kind === SyntaxKind.InterfaceDeclaration && idName(n?.name) === 'components'
)
if (!componentsNode?.members) return []
const schemasProp = componentsNode.members.find(
m => m?.kind === SyntaxKind.PropertySignature && idName(m?.name) === 'schemas' && Array.isArray(m?.type?.members)
)
if (!schemasProp) return []
return schemasProp.type.members
.map(m => m?.kind === SyntaxKind.PropertySignature ? idName(m.name) : undefined)
.filter(n => typeof n === 'string')
}
// ─── Types ──────────────────────────────────────────────────────────────────
export async function generateTypes(schema) {
const ast = await openapiTS(schema)
const schemaNames = getSchemaNamesFromAst(ast)
const typesCode = astToString(ast)
const lines = [
'// AUTO-GENERATED by mizan — do not edit',
'',
typesCode,
'',
'// Convenience type exports',
...schemaNames.map(name => `export type ${name} = components["schemas"]["${name}"]`),
'',
]
return lines.join('\n')
}
// ─── Context Files ──────────────────────────────────────────────────────────
export function generateContextFile(ctxName, ctxMeta, functions) {
const pascal = pascalCase(ctxName)
const ctxFunctions = functions.filter(fn => fn.isContext === ctxName)
const lines = [
'// AUTO-GENERATED by mizan — do not edit',
'',
"import { mizanFetch } from '@mizan/runtime'",
'',
]
// Import output types
const typeImports = ctxFunctions.map(fn => fn.outputType).filter(Boolean)
if (typeImports.length > 0) {
lines.push(`import type { ${[...new Set(typeImports)].join(', ')} } from '../types'`)
lines.push('')
}
// Data interface
lines.push(`export interface ${pascal}ContextData {`)
for (const fn of ctxFunctions) {
lines.push(` ${fn.name}: ${fn.outputType}`)
}
lines.push('}')
lines.push('')
// Params interface (from x-mizan-contexts)
const params = ctxMeta?.params || {}
const paramEntries = Object.entries(params)
if (paramEntries.length > 0) {
lines.push(`export interface ${pascal}ContextParams {`)
for (const [pName, pMeta] of paramEntries) {
const tsType = pMeta.type === 'integer' || pMeta.type === 'number' ? 'number' : pMeta.type === 'boolean' ? 'boolean' : 'string'
const optional = pMeta.required ? '' : '?'
lines.push(` ${pName}${optional}: ${tsType}`)
}
lines.push('}')
} else {
lines.push(`export type ${pascal}ContextParams = Record<string, never>`)
}
lines.push('')
// Fetch function
lines.push(`export function fetch${pascal}Context(params: ${pascal}ContextParams): Promise<${pascal}ContextData> {`)
lines.push(` return mizanFetch('${ctxName}', params)`)
lines.push('}')
lines.push('')
return lines.join('\n')
}
// ─── Mutation Files ─────────────────────────────────────────────────────────
export function generateMutationFile(fn) {
const pascal = pascalCase(fn.camelName)
const lines = [
'// AUTO-GENERATED by mizan — do not edit',
'',
"import { mizanCall } from '@mizan/runtime'",
'',
]
// Import types
const typeImports = []
if (fn.hasInput && fn.inputType) typeImports.push(fn.inputType)
if (fn.outputType) typeImports.push(fn.outputType)
if (typeImports.length > 0) {
lines.push(`import type { ${[...new Set(typeImports)].join(', ')} } from '../types'`)
lines.push('')
}
// Call function
if (fn.hasInput) {
lines.push(`export function call${pascal}(args: ${fn.inputType}): Promise<${fn.outputType}> {`)
} else {
lines.push(`export function call${pascal}(): Promise<${fn.outputType}> {`)
}
lines.push(` return mizanCall('${fn.name}', ${fn.hasInput ? 'args' : '{}'})`)
lines.push('}')
lines.push('')
return lines.join('\n')
}
// ─── Function Files (plain, no context, no affects) ─────────────────────────
export function generateFunctionFile(fn) {
// Same shape as mutation, just different semantics
return generateMutationFile(fn)
}
// ─── Index ──────────────────────────────────────────────────────────────────
export function generateStage1Index(schema) {
const functions = schema['x-mizan-functions'] || []
const contextGroups = schema['x-mizan-contexts'] || {}
const lines = [
'// AUTO-GENERATED by mizan — do not edit',
'',
"export * from './types'",
'',
]
// Context exports
for (const ctxName of Object.keys(contextGroups)) {
const pascal = pascalCase(ctxName)
lines.push(`export { fetch${pascal}Context, type ${pascal}ContextData, type ${pascal}ContextParams } from './contexts/${ctxName}'`)
}
if (Object.keys(contextGroups).length > 0) lines.push('')
// Mutation + function exports
const regularFns = functions.filter(fn => !fn.isContext && !fn.isForm)
for (const fn of regularFns) {
const pascal = pascalCase(fn.camelName)
lines.push(`export { call${pascal} } from './${fn.affects ? 'mutations' : 'functions'}/${fn.camelName}'`)
}
if (regularFns.length > 0) lines.push('')
return lines.join('\n')
}

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{
"name": "@mizan/runtime",
"version": "0.1.0",
"description": "Mizan client runtime — context registry, invalidation, fetch. Zero framework dependencies.",
"type": "module",
"main": "src/index.ts",
"exports": {
".": "./src/index.ts"
},
"license": "MIT"
}

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/**
* @mizan/runtime — The client state kernel.
*
* Zero framework dependencies. React, Vue, Svelte — all import from here.
*
* Four concerns:
* 1. Configuration — baseUrl, auth headers, CSRF
* 2. Context registry — mounted providers register for invalidation
* 3. Invalidation — microtask-batched, scoped or broad
* 4. Fetch — mizanFetch (GET context bundles) + mizanCall (POST mutations)
*/
// === Error ===
export class MizanError extends Error {
constructor(public status: number, public body: string) {
super(`Mizan call failed (${status})`)
}
}
// === Configuration ===
interface MizanConfig {
baseUrl: string
getHeaders: () => Record<string, string> | Promise<Record<string, string>>
csrfCookieName: string
csrfHeaderName: string
}
const config: MizanConfig = {
baseUrl: '/api/mizan',
getHeaders: () => ({}),
csrfCookieName: 'csrftoken',
csrfHeaderName: 'X-CSRFToken',
}
export function configure(opts: Partial<MizanConfig>): void {
Object.assign(config, opts)
}
export function getConfig(): Readonly<MizanConfig> {
return config
}
// === CSRF ===
function getCSRFToken(): string | null {
if (typeof document === 'undefined') return null
const match = document.cookie.match(new RegExp(`${config.csrfCookieName}=([^;]+)`))
return match?.[1] ?? null
}
// === Session Init ===
let _sessionReady: Promise<void> | null = null
/**
* Initialize a session (fetches CSRF cookie from GET /session/).
* Called automatically on first fetch if not called explicitly.
* No-op if a CSRF cookie already exists.
*/
export function initSession(): Promise<void> {
if (_sessionReady) return _sessionReady
_sessionReady = (async () => {
// If we already have a CSRF token, skip
if (getCSRFToken()) return
try {
await fetch(`${config.baseUrl}/session/`, { credentials: 'include' })
} catch (e) {
console.error('[mizan] Session init failed:', e)
}
})()
return _sessionReady
}
// === Context Registry ===
export type RefetchFn = () => void
type ParamKey = string
interface ContextEntry {
params: Record<string, any>
refetch: RefetchFn
}
const contexts: Map<string, Map<ParamKey, ContextEntry>> = new Map()
export function registerContext(
name: string,
params: Record<string, any>,
refetch: RefetchFn,
): () => void {
if (!contexts.has(name)) contexts.set(name, new Map())
const key = JSON.stringify(params)
contexts.get(name)!.set(key, { params, refetch })
return () => contexts.get(name)!.delete(key)
}
// === Invalidation ===
const pending: Set<string> = new Set()
const pendingScoped: Map<string, Record<string, any>> = new Map()
let scheduled = false
export function invalidate(context: string, params?: Record<string, any>): void {
if (params) {
pendingScoped.set(context, params)
} else {
pending.add(context)
}
if (!scheduled) {
scheduled = true
queueMicrotask(flush)
}
}
function flush(): void {
for (const name of pending) {
const entries = contexts.get(name)
if (entries) entries.forEach(entry => entry.refetch())
}
for (const [name, params] of pendingScoped) {
if (pending.has(name)) continue
const entries = contexts.get(name)
if (!entries) continue
const key = JSON.stringify(params)
const entry = entries.get(key)
if (entry) entry.refetch()
}
pending.clear()
pendingScoped.clear()
scheduled = false
}
// === Fetch ===
async function resolveHeaders(): Promise<Record<string, string>> {
await initSession()
const custom = await config.getHeaders()
const csrf = getCSRFToken()
return {
...custom,
...(csrf ? { [config.csrfHeaderName]: csrf } : {}),
'Accept': 'application/json',
}
}
export async function mizanFetch(
contextName: string,
params?: Record<string, any>,
): Promise<any> {
const url = new URL(
`${config.baseUrl}/ctx/${contextName}/`,
typeof globalThis.location !== 'undefined' ? globalThis.location.origin : 'http://localhost',
)
if (params) {
for (const [k, v] of Object.entries(params)) {
url.searchParams.set(k, String(v))
}
}
const headers = await resolveHeaders()
const res = await fetch(url.toString(), { headers, credentials: 'same-origin' })
if (!res.ok) throw new MizanError(res.status, await res.text())
return res.json()
}
export async function mizanCall(
functionName: string,
args: Record<string, any>,
): Promise<any> {
const headers = await resolveHeaders()
headers['Content-Type'] = 'application/json'
const res = await fetch(`${config.baseUrl}/call/`, {
method: 'POST',
headers,
credentials: 'same-origin',
body: JSON.stringify({ fn: functionName, args }),
})
if (!res.ok) throw new MizanError(res.status, await res.text())
const data = await res.json()
// Server-driven invalidation
if (data.invalidate) {
for (const entry of data.invalidate) {
if (typeof entry === 'string') {
invalidate(entry)
} else {
invalidate(entry.context, entry.params)
}
}
}
return data.result
}

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{
"name": "@mizan/svelte",
"version": "0.1.0",
"description": "Mizan Svelte adapter — stores generated from @mizan/runtime.",
"type": "module",
"peerDependencies": {
"svelte": ">=4",
"@mizan/runtime": ">=0.1.0"
},
"license": "MIT"
}

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{
"name": "@mizan/vue",
"version": "0.1.0",
"description": "Mizan Vue adapter — composables generated from @mizan/runtime.",
"type": "module",
"peerDependencies": {
"vue": ">=3",
"@mizan/runtime": ">=0.1.0"
},
"license": "MIT"
}