apollo-server-throw-if

apollo-server-throw-if

A library that throws Apollo Server exceptions when validations fail.

Usage

Install module

npm install --save apollo-server-throw-if

Sample

const throwIf = require('apollo-server-throw-if')

// [your code here...]

// This will throw as '2043-01-01' is not a date in milliseconds
throwIf.invalidDateInMs('2043-01-01', 'lastUpdate')

// This will not throw as all items in object (first argument) are
// valid given the validators given in validator (3rd argument)
throwIf.invalidUpdateObject(
  { date: '2032-02-05', description: 'game' },
  'events',
  {
    date: throwIf.invalidShortDate,
    description: throwIf.invalidTrimmedNonEmptyString
  }
)

Functions

Functions	Description
invalidDateInMs(value, argumentName)	Throws if: - value is not a number - value can not be parsed by new Date(value)
invalidFirestoreId(id, objectName)	Throws if: - not a valid Firestore id (20 characters a-z, A-Z, and 0-9)
invalidShortDate(value, argumentName)	Expects a date with the format (YYYY-MM-DD). Throws if: - value is not a string with exactly 10 characters - value can not be parsed by new Date(value)
invalidTrimmedNonEmptyString(value, argumentName)	Throws if: - value is not a string - value is not trimmed - string is empty
invalidUpdateObject(object, objectName, validator)	validator must be an object of functions that receive an value and a name as parameters. See above for example. Throws if any of the properties in object does not have a property in validator or if the validator throws.
objectDoesNotContain(object, objectName, properties)	Throws if any of the property names listed in properties are not in object
objectDoesNotExistOrIsDeleted(object, objectName)	Throws if the object does not exist of object.deleted is true
objectExist(object, attributeName, attributeValue)	Throws if the object already exist.
objectUpdatesHaveUnchangedProperties(objectUpdates, objectUpdatesName, originalObject)	Throws if any of the propertes in the objectUpdates has the same value as in originalObject. Change validation uses == as opposed to === and only works for objects that does not contain nested objects.
outOfSync(localLastUpdated, serverLastUpdated)	Throws if: - any of the provided dates is not a valid date - dates are not the same