feat: convert flow to typescript

```
flow-to-ts --prettier --write --delete-source .\lib\**\*.js 
```

lib/adapters/legacy-adapter.js → lib/adapters/legacy-adapter.ts

@@ -1,8 +1,8 @@
 "use strict"
-
 /**
  * @access private
  */
+
 export default class LegacyAdapter {
   constructor(textEditor) {
     this.textEditor = textEditor
@@ -33,8 +33,10 @@ export default class LegacyAdapter {
       if (!this.heightCache) {
         this.heightCache = this.textEditor.getHeight()
       }
+
       return this.heightCache
     }
+
     return this.textEditor.getHeight()
   }
 
@@ -43,8 +45,10 @@ export default class LegacyAdapter {
       if (!this.scrollTopCache) {
         this.scrollTopCache = this.textEditor.getScrollTop()
       }
+
       return this.scrollTopCache
     }
+
     return this.textEditor.getScrollTop()
   }
 
@@ -57,6 +61,7 @@ export default class LegacyAdapter {
       if (!this.scrollLeftCache) {
         this.scrollLeftCache = this.textEditor.getScrollLeft()
       }
+
       return this.scrollLeftCache
     }
 
@@ -67,19 +72,22 @@ export default class LegacyAdapter {
     if (this.maxScrollTopCache != null && this.useCache) {
       return this.maxScrollTopCache
     }
+
     let maxScrollTop = this.textEditor.displayBuffer.getMaxScrollTop()
     const lineHeight = this.textEditor.getLineHeightInPixels()
 
     if (this.scrollPastEnd) {
       maxScrollTop -= this.getHeight() - 3 * lineHeight
     }
+
     if (this.useCache) {
       this.maxScrollTopCache = maxScrollTop
     }
+
     return maxScrollTop
   }
 
   editorDestroyed() {
     return !this.textEditor || this.textEditor.isDestroyed()
   }
-}
+}

lib/adapters/stable-adapter.js → lib/adapters/stable-adapter.ts

@@ -1,8 +1,8 @@
 "use strict"
-
 /**
  * @access private
  */
+
 export default class StableAdapter {
   constructor(textEditor) {
     this.textEditor = textEditor
@@ -38,8 +38,10 @@ export default class StableAdapter {
       if (!this.heightCache) {
         this.heightCache = this.textEditorElement.getHeight()
       }
+
       return this.heightCache
     }
+
     return this.textEditorElement.getHeight()
   }
 
@@ -52,8 +54,10 @@ export default class StableAdapter {
       if (!this.scrollTopCache) {
         this.scrollTopCache = this.computeScrollTop()
       }
+
       return this.scrollTopCache
     }
+
     return this.computeScrollTop()
   }
 
@@ -100,8 +104,10 @@ export default class StableAdapter {
       if (!this.scrollLeftCache) {
         this.scrollLeftCache = this.textEditorElement.getScrollLeft()
       }
+
       return this.scrollLeftCache
     }
+
     return this.textEditorElement.getScrollLeft()
   }
 
@@ -115,6 +121,7 @@ export default class StableAdapter {
     }
 
     let maxScrollTop
+
     if (this.textEditorElement.getMaxScrollTop) {
       maxScrollTop = this.textEditorElement.getMaxScrollTop()
 
@@ -149,4 +156,4 @@ export default class StableAdapter {
       !this.textEditorElement.parentNode
     )
   }
-}
+}

lib/canvas-layer.js → lib/canvas-layer.ts

@@ -1,24 +1,25 @@
 /** @babel */
 "use strict"
-
 /**
  * @access private
  */
+
 export default class CanvasLayer {
   constructor() {
     /**
      * The onscreen canvas.
      * @type {HTMLCanvasElement}
      */
     this.canvas = document.createElement("canvas")
-
     const desynchronized = false // TODO Electron 9 has color issues #786
 
     /**
      * The onscreen canvas context.
      * @type {CanvasRenderingContext2D}
      */
-    this.context = this.canvas.getContext("2d", { desynchronized })
+    this.context = this.canvas.getContext("2d", {
+      desynchronized,
+    })
     this.canvas.webkitImageSmoothingEnabled = false
     this.context.imageSmoothingEnabled = false
 
@@ -28,12 +29,15 @@ export default class CanvasLayer {
      * @access private
      */
     this.offscreenCanvas = document.createElement("canvas")
+
     /**
      * The offscreen canvas context.
      * @type {CanvasRenderingContext2D}
      * @access private
      */
-    this.offscreenContext = this.offscreenCanvas.getContext("2d", { desynchronized })
+    this.offscreenContext = this.offscreenCanvas.getContext("2d", {
+      desynchronized,
+    })
     this.offscreenCanvas.webkitImageSmoothingEnabled = false
     this.offscreenContext.imageSmoothingEnabled = false
   }
@@ -97,4 +101,4 @@ export default class CanvasLayer {
   clearCanvas() {
     this.context.clearRect(0, 0, this.canvas.width, this.canvas.height)
   }
-}
+}