Add convenience logging.

packages/gallery/src/data/image.js

@@ -165,6 +165,3 @@ const processImportables = backgroundTask(async function _processImportables() {
 	remove(_id, _rev);
 	processImportables();
 });
-
-// Check if we have any unimported images.
-processImportables();

packages/gallery/src/utils/event.js

@@ -57,18 +57,27 @@ if (!global.requestIdleCallback) {
 	};
 }
 
-export function backgroundTask(fn) {
+export function backgroundTask(fn, initialDelay = 500) {
 	let id = null;
 	let reRunCount = 0;
+	let params = [];
 
-	function runTask({ didTimeout, timeRemaining }) {
+	async function runTask({ didTimeout }) {
 		if (didTimeout) {
 			id = requestIdleCallback(runTask);
 			return;
 		}
 		const start = Date.now();
-		fn();
-		if (reRunCount && Date.now() - start < timeRemaining()) {
+		group(fn.name);
+		if (params.length) {
+			log(`${fn.name} params: `, ...params);
+		}
+		await fn(...params);
+		const executionTime = Date.now() - start;
+		log(`${fn.name} execution time: ${executionTime}ms`);
+		groupEnd(fn.name);
+		params = [];
+		if (reRunCount) {
 			reRunCount -= 1;
 			id = requestIdleCallback(runTask);
 		} else {
@@ -76,12 +85,19 @@ export function backgroundTask(fn) {
 		}
 	}
 
-	return () => {
+	const wrapper = (...args) => {
 		if (id !== null) {
 			reRunCount += 1;
-			return;
+			return false;
 		}
+		params = args;
 		id = requestIdleCallback(runTask);
-		return;
+		return true;
 	};
+
+	if (initialDelay) {
+		setTimeout(wrapper, initialDelay);
+	}
+
+	return wrapper;
 }