Required options

addons/xterm-addon-webgl/src/WebglRenderer.ts

@@ -552,18 +552,18 @@ export class WebglRenderer extends Disposable implements IRenderer {
     // Calculate the scaled cell height, if lineHeight is _not_ 1, the resulting value will be
     // floored since lineHeight can never be lower then 1, this guarentees the scaled cell height
     // will always be larger than scaled char height.
-    this.dimensions.scaledCellHeight = Math.floor(this.dimensions.scaledCharHeight * this._terminal.options.lineHeight!);
+    this.dimensions.scaledCellHeight = Math.floor(this.dimensions.scaledCharHeight * this._terminal.options.lineHeight);
 
     // Calculate the y offset within a cell that glyph should draw at in order for it to be centered
     // correctly within the cell.
     this.dimensions.scaledCharTop = this._terminal.options.lineHeight === 1 ? 0 : Math.round((this.dimensions.scaledCellHeight - this.dimensions.scaledCharHeight) / 2);
 
     // Calculate the scaled cell width, taking the letterSpacing into account.
-    this.dimensions.scaledCellWidth = this.dimensions.scaledCharWidth + Math.round(this._terminal.options.letterSpacing!);
+    this.dimensions.scaledCellWidth = this.dimensions.scaledCharWidth + Math.round(this._terminal.options.letterSpacing);
 
     // Calculate the x offset with a cell that text should draw from in order for it to be centered
     // correctly within the cell.
-    this.dimensions.scaledCharLeft = Math.floor(this._terminal.options.letterSpacing! / 2);
+    this.dimensions.scaledCharLeft = Math.floor(this._terminal.options.letterSpacing / 2);
 
     // Recalculate the canvas dimensions, the scaled dimensions define the actual number of pixel in
     // the canvas

addons/xterm-addon-webgl/src/atlas/CharAtlasUtils.ts

@@ -32,21 +32,21 @@ export function generateConfig(scaledCellWidth: number, scaledCellHeight: number
     contrastCache: colors.contrastCache
   };
   return {
-    customGlyphs: terminal.options.customGlyphs!,
+    customGlyphs: terminal.options.customGlyphs,
     devicePixelRatio: window.devicePixelRatio,
-    letterSpacing: terminal.options.letterSpacing!,
-    lineHeight: terminal.options.lineHeight!,
+    letterSpacing: terminal.options.letterSpacing,
+    lineHeight: terminal.options.lineHeight,
     scaledCellWidth,
     scaledCellHeight,
     scaledCharWidth,
     scaledCharHeight,
-    fontFamily: terminal.options.fontFamily!,
-    fontSize: terminal.options.fontSize!,
-    fontWeight: terminal.options.fontWeight as FontWeight,
-    fontWeightBold: terminal.options.fontWeightBold as FontWeight,
-    allowTransparency: terminal.options.allowTransparency!,
-    drawBoldTextInBrightColors: terminal.options.drawBoldTextInBrightColors!,
-    minimumContrastRatio: terminal.options.minimumContrastRatio!,
+    fontFamily: terminal.options.fontFamily,
+    fontSize: terminal.options.fontSize,
+    fontWeight: terminal.options.fontWeight,
+    fontWeightBold: terminal.options.fontWeightBold,
+    allowTransparency: terminal.options.allowTransparency,
+    drawBoldTextInBrightColors: terminal.options.drawBoldTextInBrightColors,
+    minimumContrastRatio: terminal.options.minimumContrastRatio,
     colors: clonedColors
   };
 }

addons/xterm-addon-webgl/src/renderLayer/CursorRenderLayer.ts

@@ -213,7 +213,7 @@ export class CursorRenderLayer extends BaseRenderLayer {
   private _renderBarCursor(terminal: Terminal, x: number, y: number, cell: ICellData): void {
     this._ctx.save();
     this._ctx.fillStyle = this._colors.cursor.css;
-    this._fillLeftLineAtCell(x, y, terminal.options.cursorWidth!);
+    this._fillLeftLineAtCell(x, y, terminal.options.cursorWidth);
     this._ctx.restore();
   }