How to use the electron-builder.Arch.x64 function in electron-builder

test.ifNotCiMac("boring, MUI_HEADER as option", () => {
  let installerHeaderPath: string | null = null
  return assertPack("test-app-one", {
    targets: Platform.WINDOWS.createTarget(["nsis"], Arch.ia32, Arch.x64),
    config: {
      nsis: {
        oneClick: false,
        installerHeader: "foo.bmp"
      }
    },
      effectiveOptionComputed: async (it) => {
        const defines = it[0]
        expect(defines.MUI_HEADERIMAGE).toBeNull()
        expect(defines.MUI_HEADERIMAGE_BITMAP).toEqual(installerHeaderPath)
        expect(defines.MUI_HEADERIMAGE_RIGHT).toBeNull()
        // test that we can build such installer
        return false
      }
    }, {
      projectDirCreated: projectDir => {

async function checkLinuxResult(outDir: string, packager: Packager, arch: Arch, nameToTarget: Map) {
  if (!nameToTarget.has("deb")) {
    return
  }

  const appInfo = packager.appInfo
  const packageFile = `${outDir}/TestApp_${appInfo.version}_${arch === Arch.ia32 ? "i386" : (arch === Arch.x64 ? "amd64" : "armv7l")}.deb`
  expect(await getContents(packageFile)).toMatchSnapshot()
  if (arch === Arch.ia32) {
    expect(await getContents(`${outDir}/TestApp_${appInfo.version}_i386.deb`)).toMatchSnapshot()
  }

  const control = parseDebControl(await execShell(`ar p '${packageFile}' control.tar.gz | ${await getTarExecutable()} zx --to-stdout ./control`, {
    maxBuffer: 10 * 1024 * 1024,
  }))

  delete control.Version
  delete control.Size
  const description = control.Description
  delete control.Description
  expect(control).toMatchSnapshot()
  // strange difference on linux and mac (no leading space on Linux)
  expect(description.trim()).toMatchSnapshot()