diff --git a/package.json b/package.json
index fa29486a..0150569d 100644
--- a/package.json
+++ b/package.json
@@ -50,7 +50,7 @@
     "ts-loader": "^6.0.4",
     "tslint": "^5.18.0",
     "tslint-consistent-codestyle": "^1.13.0",
-    "typescript": "3.6",
+    "typescript": "3.7",
     "utf8": "^3.0.0",
     "webpack": "^4.35.3",
     "webpack-cli": "^3.1.0",
diff --git a/src/Terminal.ts b/src/Terminal.ts
index 3e7e55ca..537ecb74 100644
--- a/src/Terminal.ts
+++ b/src/Terminal.ts
@@ -240,18 +240,12 @@ export class Terminal extends Disposable implements ITerminal, IDisposable, IInp
       return;
     }
     super.dispose();
-    if (this._windowsMode) {
-      this._windowsMode.dispose();
-      this._windowsMode = undefined;
-    }
-    if (this._renderService) {
-      this._renderService.dispose();
-    }
+    this._windowsMode?.dispose();
+    this._windowsMode = undefined;
+    this._renderService?.dispose();
     this._customKeyEventHandler = null;
     this.write = () => {};
-    if (this.element && this.element.parentNode) {
-      this.element.parentNode.removeChild(this.element);
-    }
+    this.element?.parentNode?.removeChild(this.element);
   }
 
   private _setup(): void {
@@ -336,12 +330,8 @@ export class Terminal extends Disposable implements ITerminal, IDisposable, IInp
         case 'fontFamily':
         case 'fontSize':
           // When the font changes the size of the cells may change which requires a renderer clear
-          if (this._renderService) {
-            this._renderService.clear();
-          }
-          if (this._charSizeService) {
-            this._charSizeService.measure();
-          }
+          this._renderService?.clear();
+          this._charSizeService?.measure();
           break;
         case 'drawBoldTextInBrightColors':
         case 'letterSpacing':
@@ -363,9 +353,7 @@ export class Terminal extends Disposable implements ITerminal, IDisposable, IInp
           break;
         case 'scrollback':
           this.buffers.resize(this.cols, this.rows);
-          if (this.viewport) {
-            this.viewport.syncScrollArea();
-          }
+          this.viewport?.syncScrollArea();
           break;
         case 'screenReaderMode':
           if (this.optionsService.options.screenReaderMode) {
@@ -373,10 +361,8 @@ export class Terminal extends Disposable implements ITerminal, IDisposable, IInp
               this._accessibilityManager = new AccessibilityManager(this, this._renderService);
             }
           } else {
-            if (this._accessibilityManager) {
-              this._accessibilityManager.dispose();
-              this._accessibilityManager = null;
-            }
+            this._accessibilityManager?.dispose();
+            this._accessibilityManager = null;
           }
           break;
         case 'tabStopWidth': this.buffers.setupTabStops(); break;
@@ -389,10 +375,8 @@ export class Terminal extends Disposable implements ITerminal, IDisposable, IInp
               this._windowsMode = applyWindowsMode(this);
             }
           } else {
-            if (this._windowsMode) {
-              this._windowsMode.dispose();
-              this._windowsMode = undefined;
-            }
+            this._windowsMode?.dispose();
+            this._windowsMode = undefined;
           }
           break;
       }
@@ -665,15 +649,9 @@ export class Terminal extends Disposable implements ITerminal, IDisposable, IInp
    */
   private _setTheme(theme: ITheme): void {
     this._theme = theme;
-    if (this._colorManager) {
-      this._colorManager.setTheme(theme);
-    }
-    if (this._renderService) {
-      this._renderService.setColors(this._colorManager.colors);
-    }
-    if (this.viewport) {
-      this.viewport.onThemeChange(this._colorManager.colors);
-    }
+    this._colorManager?.setTheme(theme);
+    this._renderService?.setColors(this._colorManager.colors);
+    this.viewport?.onThemeChange(this._colorManager.colors);
   }
 
   /**
@@ -940,9 +918,7 @@ export class Terminal extends Disposable implements ITerminal, IDisposable, IInp
    * @param end The row to end at (between start and this.rows - 1).
    */
   public refresh(start: number, end: number): void {
-    if (this._renderService) {
-      this._renderService.refreshRows(start, end);
-    }
+    this._renderService?.refreshRows(start, end);
   }
 
   /**
@@ -951,9 +927,7 @@ export class Terminal extends Disposable implements ITerminal, IDisposable, IInp
    * @param end The row to end at (between start and this.rows - 1).
    */
   private _queueLinkification(start: number, end: number): void {
-    if (this.linkifier) {
-      this.linkifier.linkifyRows(start, end);
-    }
+    this.linkifier?.linkifyRows(start, end);
   }
 
   /**
@@ -1233,24 +1207,18 @@ export class Terminal extends Disposable implements ITerminal, IDisposable, IInp
    * Clears the current terminal selection.
    */
   public clearSelection(): void {
-    if (this._selectionService) {
-      this._selectionService.clearSelection();
-    }
+    this._selectionService?.clearSelection();
   }
 
   /**
    * Selects all text within the terminal.
    */
   public selectAll(): void {
-    if (this._selectionService) {
-      this._selectionService.selectAll();
-    }
+    this._selectionService?.selectAll();
   }
 
   public selectLines(start: number, end: number): void {
-    if (this._selectionService) {
-      this._selectionService.selectLines(start, end);
-    }
+    this._selectionService?.selectLines(start, end);
   }
 
   /**
@@ -1457,9 +1425,7 @@ export class Terminal extends Disposable implements ITerminal, IDisposable, IInp
     this._bufferService.resize(x, y);
     this.buffers.setupTabStops(this.cols);
 
-    if (this._charSizeService) {
-      this._charSizeService.measure();
-    }
+    this._charSizeService?.measure();
 
     // Sync the scroll area to make sure scroll events don't fire and scroll the viewport to an
     // invalid location
@@ -1551,9 +1517,7 @@ export class Terminal extends Disposable implements ITerminal, IDisposable, IInp
     this._bufferService.reset();
     this._coreService.reset();
     this._coreMouseService.reset();
-    if (this._selectionService) {
-      this._selectionService.reset();
-    }
+    this._selectionService?.reset();
 
     // reattach
     this._customKeyEventHandler = customKeyEventHandler;
@@ -1563,9 +1527,7 @@ export class Terminal extends Disposable implements ITerminal, IDisposable, IInp
 
     // do a full screen refresh
     this.refresh(0, this.rows - 1);
-    if (this.viewport) {
-      this.viewport.syncScrollArea();
-    }
+    this.viewport?.syncScrollArea();
   }
 
   // TODO: Remove cancel function and cancelEvents option
diff --git a/src/browser/Clipboard.ts b/src/browser/Clipboard.ts
index 594e4429..a7c48bfb 100644
--- a/src/browser/Clipboard.ts
+++ b/src/browser/Clipboard.ts
@@ -82,12 +82,12 @@ export function moveTextAreaUnderMouseCursor(ev: MouseEvent, textarea: HTMLTextA
   // Reset the terminal textarea's styling
   // Timeout needs to be long enough for click event to be handled.
   setTimeout(() => {
-    textarea.style.position = null;
-    textarea.style.width = null;
-    textarea.style.height = null;
-    textarea.style.left = null;
-    textarea.style.top = null;
-    textarea.style.zIndex = null;
+    textarea.style.position = '';
+    textarea.style.width = '';
+    textarea.style.height = '';
+    textarea.style.left = '';
+    textarea.style.top = '';
+    textarea.style.zIndex = '';
   }, 200);
 }
 
diff --git a/src/browser/MouseZoneManager.ts b/src/browser/MouseZoneManager.ts
index 7eb7c5f8..d697c133 100644
--- a/src/browser/MouseZoneManager.ts
+++ b/src/browser/MouseZoneManager.ts
@@ -175,11 +175,9 @@ export class MouseZoneManager extends Disposable implements IMouseZoneManager {
     // Find the active zone, prevent event propagation if found to prevent other
     // components from handling the mouse event.
     const zone = this._findZoneEventAt(e);
-    if (zone) {
-      if (zone.willLinkActivate(e)) {
-        e.preventDefault();
-        e.stopImmediatePropagation();
-      }
+    if (zone?.willLinkActivate(e)) {
+      e.preventDefault();
+      e.stopImmediatePropagation();
     }
   }
 
diff --git a/src/browser/renderer/BaseRenderLayer.ts b/src/browser/renderer/BaseRenderLayer.ts
index e9ad5b3a..a33bef28 100644
--- a/src/browser/renderer/BaseRenderLayer.ts
+++ b/src/browser/renderer/BaseRenderLayer.ts
@@ -60,9 +60,7 @@ export abstract class BaseRenderLayer implements IRenderLayer {
 
   public dispose(): void {
     this._container.removeChild(this._canvas);
-    if (this._charAtlas) {
-      this._charAtlas.dispose();
-    }
+    this._charAtlas?.dispose();
   }
 
   private _initCanvas(): void {
diff --git a/src/browser/services/SelectionService.ts b/src/browser/services/SelectionService.ts
index 3631bbb7..4eb6550c 100644
--- a/src/browser/services/SelectionService.ts
+++ b/src/browser/services/SelectionService.ts
@@ -688,9 +688,7 @@ export class SelectionService implements ISelectionService {
     // reverseIndex) and delete in a splice is only ever used when the same
     // number of elements was just added. Given this is could actually be
     // beneficial to leave the selection as is for these cases.
-    if (this._trimListener) {
-      this._trimListener.dispose();
-    }
+    this._trimListener.dispose();
     this._trimListener = e.activeBuffer.lines.onTrim(amount => this._onTrim(amount));
   }
 
diff --git a/yarn.lock b/yarn.lock
index c96c390c..cb02cf91 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -5184,10 +5184,10 @@ typedarray@^0.0.6:
   resolved "https://registry.yarnpkg.com/typedarray/-/typedarray-0.0.6.tgz#867ac74e3864187b1d3d47d996a78ec5c8830777"
   integrity sha1-hnrHTjhkGHsdPUfZlqeOxciDB3c=
 
-typescript@3.6:
-  version "3.6.3"
-  resolved "https://registry.yarnpkg.com/typescript/-/typescript-3.6.3.tgz#fea942fabb20f7e1ca7164ff626f1a9f3f70b4da"
-  integrity sha512-N7bceJL1CtRQ2RiG0AQME13ksR7DiuQh/QehubYcghzv20tnh+MQnQIuJddTmsbqYj+dztchykemz0zFzlvdQw==
+typescript@3.7:
+  version "3.7.2"
+  resolved "https://registry.yarnpkg.com/typescript/-/typescript-3.7.2.tgz#27e489b95fa5909445e9fef5ee48d81697ad18fb"
+  integrity sha512-ml7V7JfiN2Xwvcer+XAf2csGO1bPBdRbFCkYBczNZggrBZ9c7G3riSUeJmqEU5uOtXNPMhE3n+R4FA/3YOAWOQ==
 
 typescript@^3.5.1:
   version "3.5.1"