Convert backend to ESM

- About 5 years overdue
- Remove eslint, use bomejs instead

backend/internal/report.js

@@ -1,38 +1,37 @@
-const internalProxyHost       = require('./proxy-host');
-const internalRedirectionHost = require('./redirection-host');
-const internalDeadHost        = require('./dead-host');
-const internalStream          = require('./stream');
+import internalDeadHost from "./dead-host.js";
+import internalProxyHost from "./proxy-host.js";
+import internalRedirectionHost from "./redirection-host.js";
+import internalStream from "./stream.js";
 
 const internalReport = {
-
 	/**
 	 * @param  {Access}   access
 	 * @return {Promise}
 	 */
 	getHostsReport: (access) => {
-		return access.can('reports:hosts', 1)
+		return access
+			.can("reports:hosts", 1)
 			.then((access_data) => {
-				let user_id = access.token.getUserId(1);
+				const userId = access.token.getUserId(1);
 
-				let promises = [
-					internalProxyHost.getCount(user_id, access_data.visibility),
-					internalRedirectionHost.getCount(user_id, access_data.visibility),
-					internalStream.getCount(user_id, access_data.visibility),
-					internalDeadHost.getCount(user_id, access_data.visibility)
+				const promises = [
+					internalProxyHost.getCount(userId, access_data.visibility),
+					internalRedirectionHost.getCount(userId, access_data.visibility),
+					internalStream.getCount(userId, access_data.visibility),
+					internalDeadHost.getCount(userId, access_data.visibility),
 				];
 
 				return Promise.all(promises);
 			})
 			.then((counts) => {
 				return {
-					proxy:       counts.shift(),
+					proxy: counts.shift(),
 					redirection: counts.shift(),
-					stream:      counts.shift(),
-					dead:        counts.shift()
+					stream: counts.shift(),
+					dead: counts.shift(),
 				};
 			});
-
-	}
+	},
 };
 
-module.exports = internalReport;
+export default internalReport;