feat: convert codebase to TypeScript

```
flow-to-ts --write --delete-source --prettier ./lib/**/*.js
npm run format
```

Author: aminya

lib/adapters/legacy-adapter.js renamed to lib/adapters/legacy-adapter.ts

@@ -28,6 +28,7 @@ export default class CanvasLayer {
      * @access private
      */
     this.offscreenCanvas = document.createElement("canvas")
+
     /**
      * The offscreen canvas context.
      * @type {CanvasRenderingContext2D}

lib/adapters/stable-adapter.js renamed to lib/adapters/stable-adapter.ts

@@ -36,33 +36,38 @@ export default class DecorationManagement {
      * @access private
      */
     this.decorationsById = new Map()
+
     /**
      * The decorations stored in an array indexed with their marker id.
      * @type {Object}
      * @access private
      */
     this.decorationsByMarkerId = new Map()
+
     /**
      * The subscriptions to the markers `did-change` event indexed using the
      * marker id.
      * @type {Object}
      * @access private
      */
     this.decorationMarkerChangedSubscriptions = new Map()
+
     /**
      * The subscriptions to the markers `did-destroy` event indexed using the
      * marker id.
      * @type {Object}
      * @access private
      */
     this.decorationMarkerDestroyedSubscriptions = new Map()
+
     /**
      * The subscriptions to the decorations `did-change-properties` event
      * indexed using the decoration id.
      * @type {Object}
      * @access private
      */
     this.decorationUpdatedSubscriptions = new Map()
+
     /**
      * The subscriptions to the decorations `did-destroy` event indexed using
      * the decoration id.
@@ -96,7 +101,7 @@ export default class DecorationManagement {
    * - decoration: the decoration object that was created
    * @return {Disposable} a disposable to stop listening to the event
    */
-  onDidAddDecoration(callback: (event:Object) => void): Disposable {
+  onDidAddDecoration(callback: (event: { [key: string]: any }) => void): Disposable {
     return this.emitter.on("did-add-decoration", callback)
   }
 
@@ -112,7 +117,7 @@ export default class DecorationManagement {
    * - decoration: the decoration object that was created
    * @return {Disposable} a disposable to stop listening to the event
    */
-  onDidRemoveDecoration(callback: (event:Object) => void): Disposable {
+  onDidRemoveDecoration(callback: (event: { [key: string]: any }) => void): Disposable {
     return this.emitter.on("did-remove-decoration", callback)
   }
 
@@ -131,7 +136,7 @@ export default class DecorationManagement {
    * - decoration: the decoration object that was created
    * @return {Disposable} a disposable to stop listening to the event
    */
-  onDidChangeDecoration(callback: (event:Object) => void): Disposable {
+  onDidChangeDecoration(callback: (event: { [key: string]: any }) => void): Disposable {
     return this.emitter.on("did-change-decoration", callback)
   }
 
@@ -150,7 +155,7 @@ export default class DecorationManagement {
    * - decoration: the decoration object that was created
    * @return {Disposable} a disposable to stop listening to the event
    */
-  onDidChangeDecorationRange(callback: (event:Object) => void): Disposable {
+  onDidChangeDecorationRange(callback: (event: { [key: string]: any }) => void): Disposable {
     return this.emitter.on("did-change-decoration-range", callback)
   }
 
@@ -476,7 +481,7 @@ export default class DecorationManagement {
    *                                change object
    * @access private
    */
-  emitRangeChanges(type: string, range: {  }, screenDelta) {
+  emitRangeChanges(type: string, range: {}, screenDelta) {
     const startScreenRow = range.start.row
     const endScreenRow = range.end.row
     const lastRenderedScreenRow = this.minimap.getLastVisibleScreenRow()

lib/canvas-layer.js renamed to lib/canvas-layer.ts

@@ -21,7 +21,7 @@ export default class Decoration {
    * @param  {string} type the decoration type to match
    * @return {boolean} whether the decoration properties match the type
    */
-  static isType(decorationProperties: {  }, type: string): boolean {
+  static isType(decorationProperties: {}, type: string): boolean {
     if (Array.isArray(decorationProperties.type)) {
       if (decorationProperties.type.indexOf(type) >= 0) {
         return true
@@ -40,33 +40,39 @@ export default class Decoration {
    *                           be displayed
    * @param  {Object} properties the decoration's properties
    */
-  constructor(marker: Marker, minimap: Minimap, properties: {  }) {
+  constructor(marker: Marker, minimap: Minimap, properties: {}) {
     /**
      * @access private
      */
     this.marker = marker
+
     /**
      * @access private
      */
     this.minimap = minimap
+
     /**
      * @access private
      */
     this.emitter = new Emitter()
+
     /**
      * @access private
      */
     this.id = nextId()
+
     /**
      * @access private
      */
     this.properties = null
     this.setProperties(properties)
     this.properties.id = this.id
+
     /**
      * @access private
      */
     this.destroyed = false
+
     /**
      * @access private
      */
@@ -174,7 +180,7 @@ export default class Decoration {
    *
    * @param {Object} newProperties the new properties for the decoration
    */
-  setProperties(newProperties: {  }) {
+  setProperties(newProperties: {}) {
     if (this.destroyed) {
       return
     }

lib/decoration-management.js renamed to lib/decoration-management.ts

@@ -29,6 +29,7 @@ export default class DOMStylesReader {
      * @access private
      * unused
      */
+
     // this.hasTokenizedOnce = false
   }
 
@@ -129,6 +130,7 @@ export default class DOMStylesReader {
    * @access private
    * unused
    */
+
   /*
   invalidateIfFirstTokenization () {
     if (this.hasTokenizedOnce) { return }
@@ -164,7 +166,6 @@ function rotateHue(value: string, filter: string): string {
   let [, , r, g, b, , a] = match
 
   let [, hue] = filter.match(hueRegexp)
-
   ;[r, g, b, a, hue] = [r, g, b, a, hue].map(Number)
   ;[r, g, b] = rotate(r, g, b, hue)
 

lib/decoration.js renamed to lib/decoration.ts

@@ -26,13 +26,15 @@ export { default as Minimap } from "./minimap"
  * @access private
  */
 let active: boolean = false
+
 /**
  * The toggle state of the package.
  *
  * @type {boolean}
  * @access private
  */
 let toggled: boolean = false
+
 /**
  * The `Map` where Minimap instances are stored with the text editor they
  * target as key.
@@ -41,13 +43,15 @@ let toggled: boolean = false
  * @access private
  */
 export let editorsMinimaps = null
+
 /**
  * The composite disposable that stores the package's subscriptions.
  *
  * @type {CompositeDisposable}
  * @access private
  */
 let subscriptions: CompositeDisposable = null
+
 /**
  * The disposable that stores the package's commands subscription.
  *
@@ -404,8 +408,7 @@ function initSubscriptions() {
 
       emitter.emit("did-create-minimap", minimap)
       minimapElement.attach(textEditor.getElement())
-    }),
-    // empty color cache if the theme changes
+    }), // empty color cache if the theme changes
     atom.themes.onDidChangeActiveThemes(() => {
       domStylesReader.invalidateDOMStylesCache()
       editorsMinimaps.forEach((minimap) => {