diff --git a/src/tsconfig.strictNullChecks.json b/src/tsconfig.strictNullChecks.json
index b1e76fd29e7..9e4af5f51df 100644
--- a/src/tsconfig.strictNullChecks.json
+++ b/src/tsconfig.strictNullChecks.json
@@ -534,6 +534,7 @@
 		"./vs/workbench/browser/parts/quickinput/quickInputUtils.ts",
 		"./vs/workbench/browser/parts/quickopen/quickopen.ts",
 		"./vs/workbench/browser/parts/statusbar/statusbar.ts",
+		"./vs/workbench/browser/parts/statusbar/statusbarPart.ts",
 		"./vs/workbench/common/actions.ts",
 		"./vs/workbench/common/activity.ts",
 		"./vs/workbench/common/component.ts",
@@ -569,6 +570,8 @@
 		"./vs/workbench/parts/codeEditor/electron-browser/toggleWordWrap.ts",
 		"./vs/workbench/parts/comments/common/commentModel.ts",
 		"./vs/workbench/parts/comments/electron-browser/commentGlyphWidget.ts",
+		"./vs/workbench/parts/debug/browser/debugANSIHandling.ts",
+		"./vs/workbench/parts/debug/browser/linkDetector.ts",
 		"./vs/workbench/parts/emmet/browser/actions/showEmmetCommands.ts",
 		"./vs/workbench/parts/emmet/browser/emmet.browser.contribution.ts",
 		"./vs/workbench/parts/emmet/electron-browser/actions/expandAbbreviation.ts",
diff --git a/src/vs/monaco.d.ts b/src/vs/monaco.d.ts
index 15bb107fb17..0a0edec247e 100644
--- a/src/vs/monaco.d.ts
+++ b/src/vs/monaco.d.ts
@@ -5355,7 +5355,7 @@ declare namespace monaco.languages {
 	}
 
 	export interface WorkspaceEdit {
-		edits?: Array<ResourceTextEdit | ResourceFileEdit>;
+		edits: Array<ResourceTextEdit | ResourceFileEdit>;
 	}
 
 	export interface Rejection {
diff --git a/src/vs/platform/statusbar/common/statusbar.ts b/src/vs/platform/statusbar/common/statusbar.ts
index 19a9a4ac50c..a14dc163806 100644
--- a/src/vs/platform/statusbar/common/statusbar.ts
+++ b/src/vs/platform/statusbar/common/statusbar.ts
@@ -23,37 +23,37 @@ export interface IStatusbarEntry {
 	 *
 	 * `My text ${icon name} contains icons like ${icon name} this one.`
 	 */
-	text: string;
+	readonly text: string;
 
 	/**
 	 * An optional tooltip text to show when you hover over the entry
 	 */
-	tooltip?: string;
+	readonly tooltip?: string;
 
 	/**
 	 * An optional color to use for the entry
 	 */
-	color?: string | ThemeColor;
+	readonly color?: string | ThemeColor;
 
 	/**
 	 * An optional id of a command that is known to the workbench to execute on click
 	 */
-	command?: string;
+	readonly command?: string;
 
 	/**
 	 * Optional arguments for the command.
 	 */
-	arguments?: any[];
+	readonly arguments?: any[];
 
 	/**
 	 * An optional extension ID if this entry is provided from an extension.
 	 */
-	extensionId?: string;
+	readonly extensionId?: string;
 
 	/**
 	 * Wether to show a beak above the status bar entry.
 	 */
-	showBeak?: boolean;
+	readonly showBeak?: boolean;
 }
 
 export interface IStatusbarService {
diff --git a/src/vs/workbench/browser/parts/statusbar/statusbarPart.ts b/src/vs/workbench/browser/parts/statusbar/statusbarPart.ts
index abbd124edcc..cc601c33b01 100644
--- a/src/vs/workbench/browser/parts/statusbar/statusbarPart.ts
+++ b/src/vs/workbench/browser/parts/statusbar/statusbarPart.ts
@@ -191,7 +191,7 @@ export class StatusbarPart extends Part implements IStatusbarService {
 
 		// Create new
 		let statusDispose: IDisposable;
-		let showHandle = setTimeout(() => {
+		let showHandle: any = setTimeout(() => {
 			statusDispose = this.addEntry({ text: message }, StatusbarAlignment.LEFT, -Number.MAX_VALUE /* far right on left hand side */);
 			showHandle = null;
 		}, delayBy);
@@ -252,7 +252,7 @@ class StatusBarEntryItem implements IStatusbarItem {
 		if (this.entry.command) {
 			textContainer = document.createElement('a');
 
-			toDispose.push(addDisposableListener(textContainer, 'click', () => this.executeCommand(this.entry.command, this.entry.arguments)));
+			toDispose.push(addDisposableListener(textContainer, 'click', () => this.executeCommand(this.entry.command!, this.entry.arguments)));
 		} else {
 			textContainer = document.createElement('span');
 		}
diff --git a/src/vs/workbench/parts/debug/browser/linkDetector.ts b/src/vs/workbench/parts/debug/browser/linkDetector.ts
index 7e4e7adbe60..a795c92dbc2 100644
--- a/src/vs/workbench/parts/debug/browser/linkDetector.ts
+++ b/src/vs/workbench/parts/debug/browser/linkDetector.ts
@@ -38,7 +38,7 @@ export class LinkDetector {
 			return text;
 		}
 
-		let linkContainer: HTMLElement;
+		let linkContainer: HTMLElement | undefined;
 		for (let pattern of LinkDetector.FILE_LOCATION_PATTERNS) {
 			pattern.lastIndex = 0; // the holy grail of software development
 			let lastMatchIndex = 0;
@@ -67,7 +67,7 @@ export class LinkDetector {
 				linkContainer.appendChild(link);
 				const line = Number(match[3]);
 				const column = match[4] ? Number(match[4]) : undefined;
-				link.onclick = (e) => this.onLinkClick(new StandardMouseEvent(e), resource, line, column);
+				link.onclick = (e) => this.onLinkClick(new StandardMouseEvent(e), resource!, line, column);
 
 				lastMatchIndex = pattern.lastIndex;
 				const currentMatch = match;