Add terminal.integrated.experimentalBufferImpl setting

Fixes #60155

src/vs/workbench/parts/terminal/common/terminal.ts

@@ -99,6 +99,7 @@ export interface ITerminalConfiguration {
 		windows: { [key: string]: string };
 	};
 	showExitAlert: boolean;
+	experimentalBufferImpl: 'JsArray' | 'TypedArray';
 }
 
 export interface ITerminalConfigHelper {

src/vs/workbench/parts/terminal/electron-browser/terminal.contribution.ts

@@ -372,7 +372,13 @@ configurationRegistry.registerConfiguration({
 			description: nls.localize('terminal.integrated.showExitAlert', "Controls whether to show the alert \"The terminal process terminated with exit code\" when exit code is non-zero."),
 			type: 'boolean',
 			default: true
-		}
+		},
+		'terminal.integrated.experimentalBufferImpl': {
+			description: nls.localize('terminal.integrated.experimentalBufferImpl', "Controls the terminal's internal buffer implementation. This setting is picked up on terminal creation and will not apply to existing terminals."),
+			type: 'string',
+			enum: ['JsArray', 'TypedArray'],
+			default: 'JsArray'
+		},
 	}
 });
 

src/vs/workbench/parts/terminal/electron-browser/terminalInstance.ts

@@ -302,7 +302,8 @@ export class TerminalInstance implements ITerminalInstance {
 			// TODO: Guess whether to use canvas or dom better
 			rendererType: config.rendererType === 'auto' ? 'canvas' : config.rendererType,
 			// TODO: Remove this once the setting is removed upstream
-			experimentalCharAtlas: 'dynamic'
+			experimentalCharAtlas: 'dynamic',
+			experimentalBufferLineImpl: config.experimentalBufferImpl
 		});
 		if (this._shellLaunchConfig.initialText) {
 			this._xterm.writeln(this._shellLaunchConfig.initialText);