async await

Edge Extension Store 上架需要 V3，chrome.tabs.executeScript 停用，使用 chrome.scripting.executeScript 代替，需要  tabId ！要这干啥？

JavaScript实现谷歌浏览器插件开发的方法详解_javascript技巧_脚本之家 (jb51.net)

获取当前 tabId 就没个 API 么？ 

chrome.commands.onCommand.addListener(function (command) {
	console.log(command);
	if (command === 'capture_video') {		
			let tab = await getCurrentTab();
			console.log(tab[0].id);
			chrome.scripting.executeScript({
				target: { tabId: tab[0].id },
				files: ['video.js']
			});
		})();
	}
});

async function getCurrentTab() {
	let queryOptions = { active: true, lastFocusedWindow: true };
	let tab = chrome.tabs.query(queryOptions);
	return tab;
}

改好后报错：

Uncaught SyntaxError: await is only valid in async functions and the top level bodies of modules

用async匿名函数时候会出现的问题 - 杨强的个人小站 (idarc.cn)

(async() => {
    ......
})();

改成这样可以了 

chrome.commands.onCommand.addListener(function (command) {
	console.log(command);
	if (command === 'capture_video') {
		(async() => {
			let tab = await getCurrentTab();
			console.log(tab[0].id);
			chrome.scripting.executeScript({
				target: { tabId: tab[0].id },
				files: ['video.js']
			});
		})();
	}
});

async function getCurrentTab() {
	let queryOptions = { active: true, lastFocusedWindow: true };
	let tab = chrome.tabs.query(queryOptions);
	return tab;
}

但是 popup.js 仍然无法获取 tabId。