Improve code quality

src/utils/create-map-script.js

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+export function createMapScript(options) {
+  const googleMapScript = document.createElement('SCRIPT')
+
+  // Allow options to be an object.
+  // This is to support more esoteric means of loading Google Maps,
+  // such as Google for business
+  // https://developers.google.com/maps/documentation/javascript/get-api-key#premium-auth
+  if (typeof options !== 'object') {
+    throw new Error('options should  be an object')
+  }
+
+  // libraries
+  /* eslint-disable no-prototype-builtins */
+  if (Array.prototype.isPrototypeOf(options.libraries)) {
+    options.libraries = options.libraries.join(',')
+  }
+  options['callback'] = 'vueGoogleMapsInit'
+  let baseUrl = 'https://maps.googleapis.com/'
+
+  let url =
+    baseUrl +
+    'maps/api/js?' +
+    Object.keys(options)
+      .map((key) => encodeURIComponent(key) + '=' + encodeURIComponent(options[key]))
+      .join('&')
+
+  googleMapScript.setAttribute('src', url)
+  googleMapScript.setAttribute('async', '')
+  googleMapScript.setAttribute('defer', '')
+
+  return googleMapScript;
+}

src/utils/env.js

@@ -0,0 +1,5 @@
+export class Env {
+  static isServer() {
+    return typeof document === 'undefined';
+  }
+}

src/utils/event.js

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+export class eventUtils {
+
+}