expose stickyness decoration option

src/vs/editor/common/editorCommon.ts

@@ -1616,6 +1616,7 @@ export interface IEditorContribution {
  * @internal
  */
 export interface IThemeDecorationRenderOptions {
+	stickiness?: TrackedRangeStickiness;
 	backgroundColor?: string;
 
 	outline?: string;

src/vs/vscode.d.ts

@@ -698,6 +698,16 @@ declare module 'vscode' {
 		Full = 7
 	}
 
+	/**
+	 * Describes the behaviour of decorations when typing/editing near their edges.
+	 */
+	export enum TrackedRangeStickiness {
+		AlwaysGrowsWhenTypingAtEdges = 0,
+		NeverGrowsWhenTypingAtEdges = 1,
+		GrowsOnlyWhenTypingBefore = 2,
+		GrowsOnlyWhenTypingAfter = 3
+	}
+
 	/**
 	 * Represents options to configure the behavior of showing a [document](#TextDocument) in an [editor](#TextEditor).
 	 */
@@ -725,6 +735,12 @@ declare module 'vscode' {
 	 * Represents theme specific rendering styles for a [text editor decoration](#TextEditorDecorationType).
 	 */
 	export interface ThemableDecorationRenderOptions {
+		/**
+		 * Customize the growing behaviour of the decoration when typing at the edges of the decoration.
+		 * Defaults to TrackedRangeStickiness.AlwaysGrowsWhenTypingAtEdges
+		 */
+		stickiness?: TrackedRangeStickiness;
+
 		/**
 		 * Background color of the decoration. Use rgba() and define transparent background colors to play well with other decorations.
 		 */

src/vs/workbench/api/node/extHost.api.impl.ts

@@ -515,6 +515,7 @@ export function createApiFactory(
 			OverviewRulerLane: EditorCommon.OverviewRulerLane,
 			ParameterInformation: extHostTypes.ParameterInformation,
 			Position: extHostTypes.Position,
+			ProgressLocation: extHostTypes.ProgressLocation,
 			Range: extHostTypes.Range,
 			Selection: extHostTypes.Selection,
 			SignatureHelp: extHostTypes.SignatureHelp,
@@ -529,10 +530,10 @@ export function createApiFactory(
 			TextEditorLineNumbersStyle: extHostTypes.TextEditorLineNumbersStyle,
 			TextEditorRevealType: extHostTypes.TextEditorRevealType,
 			TextEditorSelectionChangeKind: extHostTypes.TextEditorSelectionChangeKind,
+			TrackedRangeStickiness: EditorCommon.TrackedRangeStickiness,
 			Uri: URI,
 			ViewColumn: extHostTypes.ViewColumn,
 			WorkspaceEdit: extHostTypes.WorkspaceEdit,
-			ProgressLocation: extHostTypes.ProgressLocation,
 			// functions
 			FileLocationKind: extHostTypes.FileLocationKind,
 			ApplyToKind: extHostTypes.ApplyToKind,