remove static DefaultCell

src/BufferLine.test.ts

@@ -3,7 +3,7 @@
  * @license MIT
  */
 import * as chai from 'chai';
-import { BufferLine } from './BufferLine';
+import { BufferLine, DEFAULT_CELL } from './BufferLine';
 import { CharData, IBufferLine } from './Types';
 import { NULL_CELL_CHAR, NULL_CELL_WIDTH, NULL_CELL_CODE, CHAR_DATA_ATTR_INDEX, CHAR_DATA_CHAR_INDEX, CHAR_DATA_WIDTH_INDEX, CHAR_DATA_CODE_INDEX } from './Buffer';
 
@@ -22,11 +22,11 @@ describe('BufferLine', function(): void {
     chai.expect(line.isWrapped).equals(false);
     line = new TestBufferLine(10);
     chai.expect(line.length).equals(10);
-    chai.expect(line.pop()).eql(TestBufferLine.defaultCell);
+    chai.expect(line.pop()).eql(DEFAULT_CELL);
     chai.expect(line.isWrapped).equals(false);
     line = new TestBufferLine(10, null, true);
     chai.expect(line.length).equals(10);
-    chai.expect(line.pop()).eql(TestBufferLine.defaultCell);
+    chai.expect(line.pop()).eql(DEFAULT_CELL);
     chai.expect(line.isWrapped).equals(true);
     line = new TestBufferLine(10, [123, 'a', 456, 789], true);
     chai.expect(line.length).equals(10);

src/BufferLine.ts

@@ -5,13 +5,12 @@
 import { CharData, IBufferLine } from './Types';
 import { NULL_CELL_CODE, NULL_CELL_WIDTH, NULL_CELL_CHAR } from './Buffer';
 
-export const defaultCell: CharData = [0, NULL_CELL_CHAR, NULL_CELL_WIDTH, NULL_CELL_CODE];
+export const DEFAULT_CELL: CharData = [0, NULL_CELL_CHAR, NULL_CELL_WIDTH, NULL_CELL_CODE];
 
 /**
  * Class representing a terminal line.
  */
 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): IBufferLine {
     const ch: CharData = [attr, NULL_CELL_CHAR, NULL_CELL_WIDTH, NULL_CELL_CODE];
     return new BufferLine(cols, ch, isWrapped);
@@ -25,7 +24,7 @@ export class BufferLine implements IBufferLine {
     this.length = this._data.length;
     if (cols) {
       if (!ch) {
-        ch = BufferLine.defaultCell;
+        ch = DEFAULT_CELL;
       }
       for (let i = 0; i < cols; i++) {
         this.push(ch);  // Note: the ctor ch is not cloned