[Bug] Cannot read properties of undefined (reading 'toUrl')

[13751139402]

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

why

Monaco Editor Playground Code

No response

Reproduction Steps

No response

Actual (Problematic) Behavior

No response

Expected Behavior

No response

Additional Context

No response

[taokepppooo]

https://github.com/microsoft/monaco-editor/blob/main/docs/integrate-esm.md

[jefferyE]

https://github.com/microsoft/monaco-editor/blob/main/docs/integrate-esm.md

I used Vite, but it doesn't work.

[dribble-njr]

Same issue in rspack.

self.MonacoEnvironment = {
  getWorker: function (moduleId, label) {
    if (label === 'json') {
      return new Worker(
        new URL(
          'monaco-editor/esm/vs/language/json/json.worker',
          import.meta.url
        )
      );
    }
    if (label === 'css' || label === 'scss' || label === 'less') {
      return new Worker(
        new URL('monaco-editor/esm/vs/language/css/css.worker', import.meta.url)
      );
    }
    if (label === 'html' || label === 'handlebars' || label === 'razor') {
      return new Worker(
        new URL(
          'monaco-editor/esm/vs/language/html/html.worker',
          import.meta.url
        )
      );
    }
    if (label === 'typescript' || label === 'javascript') {
      return new Worker(
        new URL(
          'monaco-editor/esm/vs/language/typescript/ts.worker',
          import.meta.url
        )
      );
    }
    return new Worker(
      new URL('monaco-editor/esm/vs/editor/editor.worker', import.meta.url)
    );
  },
};

[dribble-njr]

I tried downgrading to 0.50.0 and it solved.