fix: remove lazy loading of Main

The race conditions were fixed from two previous commits

lib/minimap-element.js

@@ -4,6 +4,7 @@ import { CompositeDisposable, Disposable } from 'atom'
 import { EventsDelegation, AncestorsMethods } from 'atom-utils-plus'
 import elementResizeDetectorImport from 'element-resize-detector'
 
+import * as Main from './main'
 import DOMStylesReader from './mixins/dom-styles-reader'
 import CanvasDrawer from './mixins/canvas-drawer'
 import include from './decorators/include'
@@ -13,7 +14,6 @@ import MinimapQuickSettingsElement from './minimap-quick-settings-element'
 const elementResizeDetector = elementResizeDetectorImport({ strategy: 'scroll' })
 
 let overlayStyle
-let Main // TODO: lazy loaded because of race confitions
 
 const ensureOverlayStyle = () => {
   if (!overlayStyle) {
@@ -685,8 +685,6 @@ class MinimapElement {
    * @return {Minimap} this element's Minimap
    */
   setModel (minimap) {
-    if (!Main) { Main = require('./main') }
-
     this.minimap = minimap
     this.subscriptions.add(this.minimap.onDidChangeScrollTop(() => {
       this.requestUpdate()

lib/mixins/canvas-drawer.js

@@ -3,9 +3,9 @@
 import { escapeRegExp } from 'underscore-plus'
 import Mixin from 'mixto'
 
+import * as Main from '../main'
 import CanvasLayer from '../canvas-layer'
 
-let Main // TODO: lazy loaded because of race confitions
 
 /**
  * The `CanvasDrawer` mixin is responsible for the rendering of a `Minimap`
@@ -328,7 +328,6 @@ export default class CanvasDrawer extends Mixin {
    */
   drawBackDecorationsForLines (firstRow, lastRow, offsetRow) {
     if (firstRow > lastRow) { return }
-    if (!Main) { Main = require('../main') }
 
     const devicePixelRatio = this.minimap.getDevicePixelRatio()
     const lineHeight = this.minimap.getLineHeight() * devicePixelRatio
@@ -375,7 +374,6 @@ export default class CanvasDrawer extends Mixin {
    */
   drawFrontDecorationsForLines (firstRow, lastRow, offsetRow) {
     if (firstRow > lastRow) { return }
-    if (!Main) { Main = require('../main') }
 
     const devicePixelRatio = this.minimap.getDevicePixelRatio()
     const lineHeight = this.minimap.getLineHeight() * devicePixelRatio