Issue in StandaloneThemeService

Reproducible in vscode.dev or in VS Code Desktop?

• Not reproducible in vscode.dev or VS Code Desktop

Reproducible in the monaco editor playground?

• Not reproducible in the monaco editor playground

Monaco Editor Playground Link

No response

Monaco Editor Playground Code

No response

Reproduction Steps

No response

Actual (Problematic) Behavior

in function/property get tokenTheme there is the following code

            // Pick up default colors from `editor.foreground` and `editor.background` if available
            const editorForeground = this.themeData.colors['editor.foreground'];
            const editorBackground = this.themeData.colors['editor.background'];
            if (editorForeground || editorBackground) {

The "if available" does not work.

If these colors are not defined in the theme, we get a null pointer exception when trying to extract them from the colors property.

Expected Behavior

I expect the code to work as it says, and work if the colors are not defined in the theme.

Additional Context

No response

Start in the StandaloneThemeService implementation at the get tokenTheme function/property and inspect how themeData.colors is accessed. The work is done when themes without editor.foreground or editor.background no longer throw a null pointer exception and the documented fallback behavior works.