async function createUpdateConfigFile()

in src/launchWizard/launchWizard.ts [65:138]
58 lines of code
11 McCabe index (conditional complexity)

async function createUpdateConfigFile(data, updateOrCreate) {
  let rootPath = vscode.workspace.workspaceFolders
    ? vscode.workspace.workspaceFolders[0].uri.fsPath
    : vscode.Uri.parse('').fsPath

  if (!fs.existsSync(`${rootPath}/.vscode`)) {
    fs.mkdirSync(`${rootPath}/.vscode`)
  }

  const launchPath = osCheck(
    `/${rootPath}/.vscode/launch.json`,
    `${rootPath}/.vscode/launch.json`
  )

  // Create launch.json if it doesn't exist already
  if (!fs.existsSync(`${rootPath}/.vscode/launch.json`)) {
    fs.writeFileSync(`${rootPath}/.vscode/launch.json`, data)
    vscode.window.showTextDocument(vscode.Uri.parse(launchPath))
    return
  }

  let newConf = JSON.parse(data).configurations[0]
  let fileData = JSON.parse(
    fs.readFileSync(`${rootPath}/.vscode/launch.json`).toString()
  )

  if (updateOrCreate.toLowerCase() === 'create') {
    let alreadyExists = false

    fileData.configurations.forEach((element) => {
      if (element.name === newConf.name) {
        alreadyExists = true
      }
    })

    if (alreadyExists) {
      // Config wanted to create already exists in launch.json
      vscode.window.showWarningMessage(
        'The conf trying to be saved already exists in the launch.json'
      )
      return
    }

    // Add new config to launch.json
    fileData.configurations.push(newConf)
    fs.writeFileSync(
      `${rootPath}/.vscode/launch.json`,
      JSON.stringify(fileData, null, 4)
    )
  } else if (updateOrCreate.toLowerCase() === 'update') {
    // Update selected config in launch.json
    let configIndex = -1

    for (let i = 0; i < fileData.configurations.length; i++) {
      if (fileData.configurations[i].name === newConf.name) {
        configIndex = i
        break
      }
    }

    // Error handling to make sure a proper config specified
    if (configIndex !== -1) {
      fileData.configurations[configIndex] = newConf
      fs.writeFileSync(
        `${rootPath}/.vscode/launch.json`,
        JSON.stringify(fileData, null, 4)
      )
    } else {
      vscode.window.showErrorMessage('Invalid Config Selected!')
    }
  }

  vscode.window.showTextDocument(vscode.Uri.parse(launchPath))
}