graphql-paper/validations/validators/non-null-field.js

A flexible in-memory store based on a GraphQL Schema

'use strict';

var graphql = require('graphql');
var nullDocument = require('../../document/null-document.js');
var fieldReturnTypeMismatch = require('../errors/field-return-type-mismatch.js');
const nonNullFieldValidator = {
  skipConnectionValue: false,
  skipNullValue: false,
  validate({
    field,
    fieldValue,
    fieldConnections: connections
  }) {
    if (graphql.isNonNullType(field.type)) {
      const hasConnectedNullDocument = (connections === null || connections === void 0 ? void 0 : connections.length) === 1 && (connections === null || connections === void 0 ? void 0 : connections.includes(nullDocument.key));
      const actual = hasConnectedNullDocument ? 'null document' : fieldValue === undefined ? 'undefined' : 'null';
      if (fieldValue == null && (hasConnectedNullDocument || !connections)) {
        throw new fieldReturnTypeMismatch.FieldReturnTypeMismatch({
          field: field,
          expected: 'non-null',
          actual
        });
      }
    }
  }
};
exports.nonNullFieldValidator = nonNullFieldValidator;
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