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import 'monaco-editor/esm/vs/editor/editor.all'
import * as monaco from 'monaco-editor/esm/vs/editor/editor.api'
import { initialize as initializeMonacoService } from 'vscode/services'
import {
  registerExtension,
  initialize as initializeVscodeExtensions,
} from 'vscode/extensions'
import getDialogsServiceOverride from 'vscode/service-override/dialogs'
import getConfigurationServiceOverride from 'vscode/service-override/configuration'
import getTextmateServiceOverride from 'vscode/service-override/textmate'
import getThemeServiceOverride from 'vscode/service-override/theme'
import getLanguagesServiceOverride from 'vscode/service-override/languages'

window.MonacoEnvironment = {
  getWorker: async function (moduleId, label) {
    switch (label) {
      case 'editorWorkerService':
        return new Worker(
          new URL('monaco-editor/esm/vs/editor/editor.worker', import.meta.url)
        )
      case 'css':
      case 'less':
      case 'scss':
        return new Worker(
          new URL(
            'monaco-editor/esm/vs/language/css/css.worker',
            import.meta.url
          )
        )
      case 'handlebars':
      case 'html':
      case 'razor':
        return new Worker(
          new URL(
            'monaco-editor/esm/vs/language/html/html.worker',
            import.meta.url
          )
        )
      case 'json':
        return new Worker(
          new URL(
            'monaco-editor/esm/vs/language/json/json.worker',
            import.meta.url
          )
        )
      case 'javascript':
      case 'typescript':
        return new Worker(
          new URL(
            'monaco-editor/esm/vs/language/typescript/ts.worker',
            import.meta.url
          )
        )
      default:
        throw new Error(`Unimplemented worker ${label} (${moduleId})`)
    }
  },
}

initializeMonacoService({
  ...getDialogsServiceOverride(),
  ...getConfigurationServiceOverride(monaco.Uri.file('/')),
  ...getTextmateServiceOverride(),
  ...getThemeServiceOverride(),
  ...getLanguagesServiceOverride(),
}).then(async () => {
  await initializeVscodeExtensions()

  const defaultThemesExtensions = {
    name: 'themes',
    publisher: 'next-monaco',
    version: '0.0.0',
    engines: {
      vscode: '*',
    },
    contributes: {
      themes: [
        {
          id: 'Next Monaco',
          label: 'Next Monaco',
          uiTheme: 'vs-dark',
          path: './next-monaco.json',
        },
      ],
    },
  }

  const { registerFile: registerDefaultThemeExtensionFile } = registerExtension(
    defaultThemesExtensions
  )

  registerDefaultThemeExtensionFile(
    './next-monaco.json',
    async () => process.env.MONACO_THEME
  )

  monaco.editor.setTheme('Next Monaco')

  const extension = {
    name: 'grammars',
    publisher: 'next-monaco',
    version: '0.0.0',
    engines: {
      vscode: '*',
    },
    contributes: {
      languages: [
        {
          id: 'typescript',
          extensions: ['.ts', '.tsx'],
          aliases: ['TypeScript', 'ts', 'typescript'],
        },
      ],
      grammars: [
        {
          language: 'typescript',
          scopeName: 'source.ts',
          path: './TypeScript.tmLanguage.json',
        },
      ],
    },
  }

  const { registerFile: registerExtensionFile } = registerExtension(extension)

  registerExtensionFile('./TypeScript.tmLanguage.json', async () =>
    JSON.stringify(
      (await import('./TypeScript.tmLanguage.json')).default as any
    )
  )
})