Infer debug mode from flag instead of env var

package.json

@@ -27,7 +27,7 @@
 		"build:inline": "node tools/build.mjs --browser inline && tsc -p tsconfig.inline.json",
 		"archive": "git archive --format zip --output dist/source-code.zip main",
 		"lint": "eslint 'src/**/*.{ts,tsx}' 'test-e2e/**/*.ts'",
-		"test": "mochette -c tsconfig.cjs.json 'src/**/*.test.{ts,tsx}'",
+		"test": "mochette -c tsconfig.cjs.json -r tools/test-setup.js 'src/**/*.test.{ts,tsx}'",
 		"test:e2e": "node tools/fetch-preact-versions.mjs && playwright test",
 		"test:e2e:10": "PREACT_VERSION=10 npm run test:e2e",
 		"test:e2e:11": "PREACT_VERSION=11 npm run test:e2e",

src/debug.ts

@@ -2,7 +2,7 @@
  * Will be tree-shaken out in prod builds
  */
 export function debug(...args: any[]) {
-	if (process.env.DEBUG) {
+	if (__DEBUG__) {
 		// eslint-disable-next-line no-console
 		console.log(...args);
 	}

src/global.d.ts

@@ -6,3 +6,5 @@ declare module "*.css" {
 declare module "@preact-list-versions" {
 	export const preactVersions: string[];
 }
+
+declare const __DEBUG__: boolean;

src/shells/shared/panel/panel.ts

@@ -90,7 +90,7 @@ async function initDevtools() {
 	effect(() => storeHighlightUpdates(store.profiler.highlightUpdates.value));
 	effect(() => storeDebugMode(store.debugMode.value));
 
-	if (process.env.DEBUG) {
+	if (__DEBUG__) {
 		(window as any).store = store;
 	}
 

src/view/store/index.ts

@@ -17,7 +17,7 @@ export function createStore(): Store {
 		listeners.forEach(fn => fn && fn(name, data));
 	};
 
-	const debugMode = signal(!!process.env.DEBUG);
+	const debugMode = signal(!!__DEBUG__);
 
 	const nodes = signal<Map<ID, DevNode>>(new Map());
 	const roots = signal<ID[]>([]);

test-e2e/fixtures/vite.config.ts

@@ -23,7 +23,7 @@ export default defineConfig({
 						jsxFragment: "Fragment",
 						jsxInject: "",
 						define: {
-							"process.env.DEBUG": JSON.stringify(false),
+							__DEBUG__: JSON.stringify(false),
 						},
 					},
 

tools/build.mjs

@@ -102,7 +102,7 @@ async function build(browser) {
 	}
 
 	const define = {
-		"process.env.DEBUG": DEBUG,
+		__DEBUG__: DEBUG,
 		"process.env.BROWSER": JSON.stringify(browser),
 	};
 

tools/test-setup.js

@@ -0,0 +1 @@
+global.__DEBUG__ = false;