How to use contentful-graph - 4 common examples

}
  if (!dlvrToken && !mgmtToken) {
    return res.json({ error: 'Missing auth token' })
  }

  let contentTypes

  try {
    contentTypes = mgmtToken
      ? await convertApi.getContentTypesFromManagementApi(spaceId, mgmtToken)
      : await convertApi.getContentTypesFromDistributionApi(spaceId, dlvrToken)
  } catch (err) {
    return res.json({ error: err })
  }

  const modelsMap = convertApi.contentTypesToModelMap(contentTypes);
  const dotStr = convertApi.modelsMapToDot(modelsMap, {dev: devMode, hideEntityFields: hideFields});

  const fileName = `${spaceId}-${Date.now()}`

  if (dotStr && dotStr.length > 1) {
    // wait for the png
    await generateGraph(outFile(fileName, 'png'), dotStr, 'png')

    // but those are fine to be finished later
    setImmediate(() => generateGraph(outFile(fileName, 'svg'), dotStr, 'svg'))
    setImmediate(() => generateGraph(outFile(fileName, 'pdf'), dotStr, 'pdf'))
  }

  res.json({
    modelsMap: modelsMap,
    dot: dotStr,

const renderHandler = async (req, res) => {
  const { spaceId, dlvrToken, mgmtToken, devMode = false, hideFields = false } = req.body

  if (!spaceId) {
    return res.json({ error: 'Missing spaceId' })
  }
  if (!dlvrToken && !mgmtToken) {
    return res.json({ error: 'Missing auth token' })
  }

  let contentTypes

  try {
    contentTypes = mgmtToken
      ? await convertApi.getContentTypesFromManagementApi(spaceId, mgmtToken)
      : await convertApi.getContentTypesFromDistributionApi(spaceId, dlvrToken)
  } catch (err) {
    return res.json({ error: err })
  }

  const modelsMap = convertApi.contentTypesToModelMap(contentTypes);
  const dotStr = convertApi.modelsMapToDot(modelsMap, {dev: devMode, hideEntityFields: hideFields});

  const fileName = `${spaceId}-${Date.now()}`

  if (dotStr && dotStr.length > 1) {
    // wait for the png
    await generateGraph(outFile(fileName, 'png'), dotStr, 'png')

    // but those are fine to be finished later
    setImmediate(() => generateGraph(outFile(fileName, 'svg'), dotStr, 'svg'))
    setImmediate(() => generateGraph(outFile(fileName, 'pdf'), dotStr, 'pdf'))

const renderHandler = async (req, res) => {
  const { spaceId, dlvrToken, mgmtToken, devMode = false, hideFields = false } = req.body

  if (!spaceId) {
    return res.json({ error: 'Missing spaceId' })
  }
  if (!dlvrToken && !mgmtToken) {
    return res.json({ error: 'Missing auth token' })
  }

  let contentTypes

  try {
    contentTypes = mgmtToken
      ? await convertApi.getContentTypesFromManagementApi(spaceId, mgmtToken)
      : await convertApi.getContentTypesFromDistributionApi(spaceId, dlvrToken)
  } catch (err) {
    return res.json({ error: err })
  }

  const modelsMap = convertApi.contentTypesToModelMap(contentTypes);
  const dotStr = convertApi.modelsMapToDot(modelsMap, {dev: devMode, hideEntityFields: hideFields});

  const fileName = `${spaceId}-${Date.now()}`

  if (dotStr && dotStr.length > 1) {
    // wait for the png
    await generateGraph(outFile(fileName, 'png'), dotStr, 'png')

    // but those are fine to be finished later
    setImmediate(() => generateGraph(outFile(fileName, 'svg'), dotStr, 'svg'))

if (!dlvrToken && !mgmtToken) {
    return res.json({ error: 'Missing auth token' })
  }

  let contentTypes

  try {
    contentTypes = mgmtToken
      ? await convertApi.getContentTypesFromManagementApi(spaceId, mgmtToken)
      : await convertApi.getContentTypesFromDistributionApi(spaceId, dlvrToken)
  } catch (err) {
    return res.json({ error: err })
  }

  const modelsMap = convertApi.contentTypesToModelMap(contentTypes);
  const dotStr = convertApi.modelsMapToDot(modelsMap, {dev: devMode, hideEntityFields: hideFields});

  const fileName = `${spaceId}-${Date.now()}`

  if (dotStr && dotStr.length > 1) {
    // wait for the png
    await generateGraph(outFile(fileName, 'png'), dotStr, 'png')

    // but those are fine to be finished later
    setImmediate(() => generateGraph(outFile(fileName, 'svg'), dotStr, 'svg'))
    setImmediate(() => generateGraph(outFile(fileName, 'pdf'), dotStr, 'pdf'))
  }

  res.json({
    modelsMap: modelsMap,
    dot: dotStr,
    rendered: {