diff --git a/src/BufferLine.ts b/src/BufferLine.ts
index 51e0148b..76031127 100644
--- a/src/BufferLine.ts
+++ b/src/BufferLine.ts
@@ -7,22 +7,10 @@ import { NULL_CELL_CODE, NULL_CELL_WIDTH, NULL_CELL_CHAR } from './Buffer';
 
 /**
  * Class representing a terminal line.
- * Currently the class is a thin proxy to `CharData[]`.
- * Once the storages are in place it will proxy access to
- * typed array based line data.
- * TODO:
- *    - move Buffer.translateBufferLineToString here?
- *    - next steps towards typed array:
- *        - create ITerminalLine interface w'o length methods
- *        - resize method
- *        - replace all external push/pop/splice accesses
- *        - fixed length
- *        - remove push/pop/splice
- *        - implement typed array alternative once string is removed from CharData
  */
 export class BufferLine implements IBufferLine {
   static defaultCell: CharData = [0, NULL_CELL_CHAR, NULL_CELL_WIDTH, NULL_CELL_CODE];
-  static blankLine(cols: number, attr: number, isWrapped?: boolean): BufferLine {
+  static blankLine(cols: number, attr: number, isWrapped?: boolean): IBufferLine {
     const ch: CharData = [attr, NULL_CELL_CHAR, NULL_CELL_WIDTH, NULL_CELL_CODE];
     return new BufferLine(cols, ch, isWrapped);
   }
@@ -52,23 +40,19 @@ export class BufferLine implements IBufferLine {
 
   public set(index: number, data: CharData): void {
     this._data[index] = data;
-    // TODO: unref old, ref new
   }
 
-  // to be removed for typed array
   public pop(): CharData | undefined  {
     const data = this._data.pop();
     this.length = this._data.length;
     return data;
   }
 
-  // to be removed for typed array
   public push(data: CharData): void {
     this._data.push(data);
     this.length = this._data.length;
   }
 
-  // to be removed for typed array
   public splice(start: number, deleteCount: number, ...items: CharData[]): CharData[] {
     const removed = this._data.splice(start, deleteCount, ...items);
     this.length = this._data.length;