[INTERNAL] ESLint: prefer-const

ESLint rule update will follow with eslint-config-google dependency bump. See google/eslint-config-google#52

lib/cli/commands/build.js

@@ -2,7 +2,7 @@
 
 const baseMiddleware = require("../middlewares/base.js");
 
-let build = {
+const build = {
 	command: "build",
 	describe: "Build project in current directory",
 	handler: handleBuild,

lib/cli/commands/init.js

@@ -1,5 +1,5 @@
 // Init
-let init = {
+const init = {
 	command: "init",
 	describe: "Initialize the UI5 Build and Development Tooling configuration for an application or library project.",
 	middlewares: [require("../middlewares/base.js")]

lib/cli/commands/serve.js

@@ -1,5 +1,5 @@
 // Serve
-let serve = {
+const serve = {
 	command: "serve",
 	describe: "Start a webserver for the current project",
 	middlewares: [require("../middlewares/base.js")]
@@ -75,7 +75,7 @@ serve.handler = function(argv) {
 			}
 		}).then((serverConfig) => {
 			return server.serve(tree, serverConfig).then(function({h2, port}) {
-				let protocol = h2 ? "https" : "http";
+				const protocol = h2 ? "https" : "http";
 				let browserUrl = protocol + "://localhost:" + port;
 				if (argv.open !== undefined) {
 					let relPath = argv.open || "/";

lib/cli/commands/tree.js

@@ -1,5 +1,5 @@
 // Tree
-let tree = {
+const tree = {
 	command: "tree",
 	describe: "Outputs the dependency tree of the current project to stdout. It takes all relevant parameters of ui5 build into account.",
 	middlewares: [require("../middlewares/base.js")]