polen/src/lib/grafaid/schema/args.ts

A framework for delightful GraphQL developer portals

import { type GraphQLArgument, isNonNullType } from 'graphql'

export const isAllArgsNonNullType = (args: readonly GraphQLArgument[]) => {
  return args.every(_ => isNonNullType(_.type))
}

export const isAllArgsNullable = (args: readonly GraphQLArgument[]) => {
  return !args.some(_ => isNonNullType(_.type))
}

export const analyzeArgsNullability = (args: readonly GraphQLArgument[]) => {
  let required = 0
  let optional = 0
  const total = args.length

  args.forEach(_ => {
    if (isNonNullType(_.type)) {
      required++
    } else {
      optional++
    }
  })
  return {
    hasAny: total > 0,
    isAllNullable: optional === total,
    required,
    optional,
    total,
  }
}