graphql/validation/rules/VariablesAreInputTypes.js

A Query Language and Runtime which can target any service.

"use strict";

Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.nonInputTypeOnVarMessage = nonInputTypeOnVarMessage;
exports.VariablesAreInputTypes = VariablesAreInputTypes;

var _GraphQLError = require("../../error/GraphQLError");

var _printer = require("../../language/printer");

var _definition = require("../../type/definition");

var _typeFromAST = require("../../utilities/typeFromAST");

function nonInputTypeOnVarMessage(variableName, typeName) {
  return "Variable \"$".concat(variableName, "\" cannot be non-input type \"").concat(typeName, "\".");
}
/**
 * Variables are input types
 *
 * A GraphQL operation is only valid if all the variables it defines are of
 * input types (scalar, enum, or input object).
 */


function VariablesAreInputTypes(context) {
  return {
    VariableDefinition: function VariableDefinition(node) {
      var type = (0, _typeFromAST.typeFromAST)(context.getSchema(), node.type); // If the variable type is not an input type, return an error.

      if (type && !(0, _definition.isInputType)(type)) {
        var variableName = node.variable.name.value;
        context.reportError(new _GraphQLError.GraphQLError(nonInputTypeOnVarMessage(variableName, (0, _printer.print)(node.type)), node.type));
      }
    }
  };
}