@sanity/import/src/documentHasErrors.js

Import documents to a Sanity dataset

function documentHasErrors(doc) {
  if (typeof doc._id !== 'undefined' && typeof doc._id !== 'string') {
    return `Document contained an invalid "_id" property - must be a string`
  }

  if (typeof doc._id !== 'undefined' && !/^[a-z0-9_.-]+$/i.test(doc._id)) {
    return `Document ID "${doc._id}" is not valid: Please use alphanumeric document IDs. Dashes (-) and underscores (_) are also allowed.`
  }

  if (typeof doc._type !== 'string') {
    return `Document did not contain required "_type" property of type string`
  }

  return null
}

documentHasErrors.validate = (doc, index) => {
  const err = documentHasErrors(doc)
  if (err) {
    throw new Error(`Failed to parse document at index #${index}: ${err}`)
  }
}

module.exports = documentHasErrors