Rename setting to experimentalBufferLineImpl, expose in d.ts

src/Buffer.ts

@@ -126,7 +126,7 @@ export class Buffer implements IBuffer {
    * Clears the buffer to it's initial state, discarding all previous data.
    */
   public clear(): void {
-    this.setBufferLineFactory(this._terminal.options.bufferLineConstructor);
+    this.setBufferLineFactory(this._terminal.options.experimentalBufferLineConstructor);
     this.ydisp = 0;
     this.ybase = 0;
     this.y = 0;

src/Terminal.ts

@@ -106,7 +106,7 @@ const DEFAULT_OPTIONS: ITerminalOptions = {
   theme: null,
   rightClickSelectsWord: Browser.isMac,
   rendererType: 'canvas',
-  bufferLineConstructor: 'JsArray'
+  experimentalBufferLineImpl: 'JsArray'
 };
 
 export class Terminal extends EventEmitter implements ITerminal, IDisposable, IInputHandlingTerminal {
@@ -493,7 +493,7 @@ export class Terminal extends EventEmitter implements ITerminal, IDisposable, II
         }
         break;
       case 'tabStopWidth': this.buffers.setupTabStops(); break;
-      case 'bufferLineConstructor':
+      case 'experimentalBufferLineImpl':
         this.buffers.normal.setBufferLineFactory(value);
         this.buffers.alt.setBufferLineFactory(value);
         break;

src/Types.ts

@@ -263,7 +263,6 @@ export interface ITerminalOptions extends IPublicTerminalOptions {
   screenKeys?: boolean;
   termName?: string;
   useFlowControl?: boolean;
-  bufferLineConstructor?: string;
 }
 
 export interface IBuffer {