Make font weight types in ITerminalOption more strict

src/Interfaces.ts

@@ -4,7 +4,7 @@
  */
 
 import { ICharset, ILinkMatcherOptions } from './Interfaces';
-import { LinkMatcherHandler, LinkMatcherValidationCallback, LineData } from './Types';
+import { LinkMatcherHandler, LinkMatcherValidationCallback, LineData, FontWeight } from './Types';
 import { IColorSet, IRenderer } from './renderer/Interfaces';
 import { IMouseZoneManager } from './input/Interfaces';
 
@@ -139,8 +139,8 @@ export interface ITerminalOptions {
   disableStdin?: boolean;
   fontSize?: number;
   fontFamily?: string;
-  fontWeight?: string;
-  fontWeightBold?: string;
+  fontWeight?: FontWeight;
+  fontWeightBold?: FontWeight;
   handler?: (data: string) => void;
   letterSpacing?: number;
   lineHeight?: number;

src/Types.ts

@@ -16,3 +16,5 @@ export enum LinkHoverEventTypes {
   TOOLTIP = 'linktooltip',
   LEAVE = 'linkleave'
 }
+
+export type FontWeight = 'normal' | 'bold' | 'bolder' | 'lighter' | '100' | '200' | '300' | '400' | '500' | '600' | '700' | '800' | '900';