wikijs/server/graph/scalars/date.js

const gql = require('graphql')

module.exports = new gql.GraphQLScalarType({
  name: 'Date',
  description: 'ISO date-time string at UTC',
  parseValue(value) {
    return new Date(value)
  },
  serialize(value) {
    return value.toISOString()
  },
  parseLiteral(ast) {
    if (ast.kind !== gql.Kind.STRING) {
      throw new TypeError('Date value must be an string!')
    }
    return new Date(ast.value)
  }
})