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feat: add performance tab (#79)
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‎.changeset/mighty-windows-begin.md‎

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---
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'@qwik.dev/devtools': patch
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---
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feat: add performance tab

‎package.json‎

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"license": "MIT",
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"description": "Qwik devtools monorepo",
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"scripts": {
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"dev": "pnpm --filter plugin build && MODE=dev pnpm --parallel dev",
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"playground": "MODE=dev DEBUG=qwik:devtools:* pnpm --filter playground dev",
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"build": "tsx scripts/build-devtools.ts",
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"change": "changeset",

‎packages/devtools/package.json‎

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"README.md"
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],
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"peerDependencies": {
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"@qwik.dev/core": "2.0.0-beta.11",
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"@qwik.dev/router": "2.0.0-beta.11",
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"@qwik.dev/core": "2.0.0-beta.15",
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"@qwik.dev/router": "2.0.0-beta.15",
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"vite": "7.1.3",
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"@tailwindcss/postcss": "^4.1.14",
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"@tailwindcss/vite": "^4.1.14",

‎packages/kit/package.json‎

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"@typescript-eslint/parser": "7.16.1",
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"cpy-cli": "^5.0.0",
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"eslint": "8.57.0",
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"eslint-plugin-qwik": "2.0.0-beta.11",
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"eslint-plugin-qwik": "2.0.0-beta.15",
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"np": "^8.0.4",
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"prettier": "3.3.3",
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"typescript": "5.4.5",

‎packages/kit/src/context.ts‎

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@@ -9,34 +9,37 @@ import {
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} from './globals';
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import { ServerRpc, ClientRpc } from './types';
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type GlobalTarget = Record<string, unknown>;
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const t = target as unknown as GlobalTarget;
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export function getViteClientContext(): ViteClientContext {
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return target[CLIENT_CTX];
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return t[CLIENT_CTX] as ViteClientContext;
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}
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export function setViteClientContext(ctx: ViteClientContext) {
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target[CLIENT_CTX] = ctx;
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t[CLIENT_CTX] = ctx;
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}
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export function getViteServerContext() {
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return target[SERVER_CTX];
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return t[SERVER_CTX] as ViteServerContext;
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}
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export function setViteServerContext(ctx: ViteServerContext) {
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target[SERVER_CTX] = ctx;
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t[SERVER_CTX] = ctx;
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}
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export function getViteServerRpc() {
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return target[SERVER_RPC];
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return t[SERVER_RPC] as ServerRpc;
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}
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export function setViteServerRpc(rpc: ServerRpc) {
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target[SERVER_RPC] = rpc;
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t[SERVER_RPC] = rpc;
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}
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export function getViteClientRpc() {
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return target[CLIENT_RPC];
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return t[CLIENT_RPC] as ClientRpc;
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}
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export function setViteClientRpc(rpc: ClientRpc) {
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target[CLIENT_RPC] = rpc;
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t[CLIENT_RPC] = rpc;
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}

‎packages/kit/src/globals.ts‎

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import { ViteDevServer } from 'vite';
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import { ClientRpc, ServerRpc } from './types';
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import { ClientRpc, ParsedStructure, ServerRpc } from './types';
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interface EventEmitter {
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on: (name: string, handler: (data: any) => void) => void;
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export const SERVER_RPC = '__qwik_server_rpc__';
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export const CLIENT_RPC = '__qwik_client_rpc__';
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// Devtools global state types
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export type QwikPerfPhaseRemembered = 'ssr' | 'csr';
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export interface QwikPerfErrorRemembered {
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name: string;
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message: string;
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}
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export interface QwikPerfEntryRemembered {
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id: number;
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component: string;
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phase: QwikPerfPhaseRemembered;
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duration: number;
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start: number;
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end: number;
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error?: QwikPerfErrorRemembered;
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/**
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* Present for wrapped `_component_` render-function modules; helps de-dupe.
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*/
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viteId?: string;
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/**
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* Present for wrapped `_component_` render-function modules.
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*/
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renderCount?: number;
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}
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export interface QwikPerfStoreRemembered {
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ssr: QwikPerfEntryRemembered[];
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csr: QwikPerfEntryRemembered[];
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}
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export interface DevtoolsRenderStats {
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/**
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* In-memory performance store written by devtools instrumentation.
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* (Populated at runtime; optional in types.)
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*/
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perf?: QwikPerfStoreRemembered;
55+
}
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export interface ComponentDevtoolsState {
57+
hooks: ParsedStructure[];
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stats: DevtoolsRenderStats;
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}
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declare global {
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interface Window {
64+
QWIK_DEVTOOLS_GLOBAL_STATE?: Record<string, ComponentDevtoolsState>;
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/**
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* Performance store (CSR + injected SSR snapshot).
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* Written by `@devtools/plugin` instrumentation.
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*/
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__QWIK_PERF__?: QwikPerfStoreRemembered;
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}
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}
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declare global {
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var __qwik_client_ctx__: ViteClientContext;
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var __qwik_server_ctx__: ViteServerContext;
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var __qwik_server_rpc__: ServerRpc;
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var __qwik_client_rpc__: ClientRpc;
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// SSR collector lives on `process` (preferred) or `globalThis` via dynamic properties.
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// We type the `process` case here to avoid `any` in plugin code.
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namespace NodeJS {
77+
interface Process {
78+
__QWIK_SSR_PERF__?: QwikPerfEntryRemembered[];
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__QWIK_SSR_PERF_SET__?: Set<string>;
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__QWIK_SSR_PERF_ID__?: number;
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__QWIK_SSR_PERF_INDEX__?: Record<string, number>;
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}
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}
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}

‎packages/kit/src/index.ts‎

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export * from './server';
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export * from './context';
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export * from './types';
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export * from './constants';
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export * from './constants';
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export * from './globals';

‎packages/playgrounds/package.json‎

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"build.preview": "vite build --ssr src/entry.preview.tsx",
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"build.types": "tsc --incremental --noEmit",
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"deploy": "echo 'Run \"npm run qwik add\" to install a server adapter'",
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"dev": "MODE=dev vite --mode ssr",
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"dev": "MODE=dev vite --mode ssr --port 5174",
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"dev.debug": "node --inspect-brk ./node_modules/vite/bin/vite.js --mode ssr --force",
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"fmt": "prettier --write .",
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"fmt.check": "prettier --check .",
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"devDependencies": {
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"@devtools/plugin": "workspace:*",
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"@devtools/ui": "workspace:*",
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"@qwik.dev/core": "2.0.0-beta.11",
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"@qwik.dev/router": "2.0.0-beta.11",
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"@qwik.dev/core": "2.0.0-beta.15",
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"@qwik.dev/router": "2.0.0-beta.15",
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"@types/eslint": "8.56.10",
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"@types/node": "20.14.11",
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"@typescript-eslint/eslint-plugin": "7.16.1",
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"@typescript-eslint/parser": "7.16.1",
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"eslint": "8.57.0",
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"eslint-plugin-qwik": "2.0.0-beta.11",
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"eslint-plugin-qwik": "2.0.0-beta.15",
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"prettier": "3.3.3",
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"typescript": "5.4.5",
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"vite": "7.1.3",

‎packages/plugin/package.json‎

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"devDependencies": {
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"@babel/types": "^7.26.7",
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"@devtools/kit": "workspace:*",
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"@qwik.dev/core": "2.0.0-beta.11",
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"@qwik.dev/core": "2.0.0-beta.15",
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"@types/eslint": "8.56.10",
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"@types/node": "20.14.11",
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"@typescript-eslint/eslint-plugin": "7.16.1",

‎packages/plugin/src/index.ts‎

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import { ResolvedConfig, type Plugin } from 'vite';
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import { getServerFunctions } from './rpc';
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import { createServerRpc, setViteServerContext, VIRTUAL_QWIK_DEVTOOLS_KEY, INNER_USE_HOOK } from '@devtools/kit';
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import VueInspector from 'vite-plugin-inspect'
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import useCollectHooksSource from './utils/useCollectHooks'
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import { parseQwikCode } from './parse/parse';
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import { startPreloading } from './npm/index';
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import updateConf from './utils/updateConf';
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import {debug} from 'debug'
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const log = debug('qwik:devtools:plugin');
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export function qwikDevtools(): Plugin[] {
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let _config: ResolvedConfig;
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const qwikData = new Map<string, any>();
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let preloadStarted = false;
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const qwikDevtoolsPlugin: Plugin = {
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name: 'vite-plugin-qwik-devtools',
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apply: 'serve',
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resolveId(id) {
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// Normalize to a stable, absolute-like id so Qwik can generate runtime chunks
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const clean = id.split('?')[0].split('#')[0];
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if (
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clean === VIRTUAL_QWIK_DEVTOOLS_KEY ||
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clean === `/${VIRTUAL_QWIK_DEVTOOLS_KEY}` ||
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clean === `\u0000${VIRTUAL_QWIK_DEVTOOLS_KEY}` ||
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clean === `/@id/${VIRTUAL_QWIK_DEVTOOLS_KEY}`
27-
) {
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return `/${VIRTUAL_QWIK_DEVTOOLS_KEY}`;
29-
}
30-
},
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load(id) {
32-
if (
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id === `/${VIRTUAL_QWIK_DEVTOOLS_KEY}` ||
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id === VIRTUAL_QWIK_DEVTOOLS_KEY ||
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id === `\u0000${VIRTUAL_QWIK_DEVTOOLS_KEY}` ||
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id === `/@id/${VIRTUAL_QWIK_DEVTOOLS_KEY}`
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) {
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return {
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code: useCollectHooksSource,
40-
map: { mappings: '' },
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};
42-
}
43-
},
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configResolved(viteConfig) {
45-
_config = viteConfig;
46-
updateConf(_config);
47-
// Start preloading as early as possible, right after config is resolved
48-
if (!preloadStarted) {
49-
preloadStarted = true;
50-
startPreloading({ config: _config }).catch((err) => {
51-
log('[Qwik DevTools] Failed to start preloading:', err);
52-
});
53-
}
54-
},
55-
transform: {
56-
order: 'pre',
57-
handler(code, id) {
58-
const mode = process.env.MODE;
59-
// Ensure virtual import is present at the very top once when a component$ is present
60-
if (id.endsWith('.tsx') && code.includes('component$')) {
61-
if (!code.includes(VIRTUAL_QWIK_DEVTOOLS_KEY)) {
62-
63-
const importLine = `import { ${INNER_USE_HOOK} } from '${VIRTUAL_QWIK_DEVTOOLS_KEY}';\n`
64-
code = importLine + code
65-
}else {
66-
log('importing virtual qwik devtools', VIRTUAL_QWIK_DEVTOOLS_KEY, code);
67-
}
68-
code = parseQwikCode(code, {path: id})
69-
}
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// Only transform the root component file
71-
if (id.endsWith('root.tsx')) {
72-
const importPath =
73-
mode === 'dev' ? '@devtools/ui' : '@qwik.dev/devtools/ui';
74-
// Check if QwikDevtools import already exists
75-
if (!code.includes(importPath)) {
76-
// Add import for QwikDevtools using the correct package name
77-
code = `import { QwikDevtools } from '${importPath}';\n${code}`;
78-
}
79-
80-
// Find the closing body tag and append QwikDevtools at the end of body
81-
const match = code.match(/<body[^>]*>([\s\S]*?)<\/body>/);
82-
if (match) {
83-
const bodyContent = match[1];
84-
const newBodyContent = `${bodyContent}\n <QwikDevtools />`;
85-
code = code.replace(bodyContent, newBodyContent);
86-
}
87-
88-
return {
89-
code,
90-
map: null,
91-
};
92-
}
93-
94-
return {
95-
code,
96-
map: { mappings: '' },
97-
};
98-
},
99-
},
100-
configureServer(server) {
101-
setViteServerContext(server as any);
102-
103-
const rpcFunctions = getServerFunctions({ server, config: _config, qwikData });
104-
105-
createServerRpc(rpcFunctions);
106-
107-
// Preloading should have already started in configResolved
108-
},
109-
}
110-
return [
111-
qwikDevtoolsPlugin,
112-
VueInspector(), // Add the VueInspector plugin instance
113-
];
114-
}
1+
export { qwikDevtools } from './plugin';

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