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node_modules/graphql/utilities/coerceInputValue.js

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+"use strict";
+
+Object.defineProperty(exports, "__esModule", {
+  value: true
+});
+exports.coerceInputValue = coerceInputValue;
+
+var _iterall = require("iterall");
+
+var _objectValues3 = _interopRequireDefault(require("../polyfills/objectValues"));
+
+var _inspect = _interopRequireDefault(require("../jsutils/inspect"));
+
+var _invariant = _interopRequireDefault(require("../jsutils/invariant"));
+
+var _didYouMean = _interopRequireDefault(require("../jsutils/didYouMean"));
+
+var _isObjectLike = _interopRequireDefault(require("../jsutils/isObjectLike"));
+
+var _suggestionList = _interopRequireDefault(require("../jsutils/suggestionList"));
+
+var _printPathArray = _interopRequireDefault(require("../jsutils/printPathArray"));
+
+var _Path = require("../jsutils/Path");
+
+var _GraphQLError = require("../error/GraphQLError");
+
+var _definition = require("../type/definition");
+
+function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
+
+/**
+ * Coerces a JavaScript value given a GraphQL Input Type.
+ */
+function coerceInputValue(inputValue, type) {
+  var onError = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : defaultOnError;
+  return coerceInputValueImpl(inputValue, type, onError);
+}
+
+function defaultOnError(path, invalidValue, error) {
+  var errorPrefix = 'Invalid value ' + (0, _inspect.default)(invalidValue);
+
+  if (path.length > 0) {
+    errorPrefix += " at \"value".concat((0, _printPathArray.default)(path), "\": ");
+  }
+
+  error.message = errorPrefix + ': ' + error.message;
+  throw error;
+}
+
+function coerceInputValueImpl(inputValue, type, onError, path) {
+  if ((0, _definition.isNonNullType)(type)) {
+    if (inputValue != null) {
+      return coerceInputValueImpl(inputValue, type.ofType, onError, path);
+    }
+
+    onError((0, _Path.pathToArray)(path), inputValue, new _GraphQLError.GraphQLError("Expected non-nullable type ".concat((0, _inspect.default)(type), " not to be null.")));
+    return;
+  }
+
+  if (inputValue == null) {
+    // Explicitly return the value null.
+    return null;
+  }
+
+  if ((0, _definition.isListType)(type)) {
+    var itemType = type.ofType;
+
+    if ((0, _iterall.isCollection)(inputValue)) {
+      var coercedValue = [];
+      (0, _iterall.forEach)(inputValue, function (itemValue, index) {
+        coercedValue.push(coerceInputValueImpl(itemValue, itemType, onError, (0, _Path.addPath)(path, index)));
+      });
+      return coercedValue;
+    } // Lists accept a non-list value as a list of one.
+
+
+    return [coerceInputValueImpl(inputValue, itemType, onError, path)];
+  }
+
+  if ((0, _definition.isInputObjectType)(type)) {
+    if (!(0, _isObjectLike.default)(inputValue)) {
+      onError((0, _Path.pathToArray)(path), inputValue, new _GraphQLError.GraphQLError("Expected type ".concat(type.name, " to be an object.")));
+      return;
+    }
+
+    var _coercedValue = {};
+    var fieldDefs = type.getFields();
+
+    for (var _i2 = 0, _objectValues2 = (0, _objectValues3.default)(fieldDefs); _i2 < _objectValues2.length; _i2++) {
+      var field = _objectValues2[_i2];
+      var fieldValue = inputValue[field.name];
+
+      if (fieldValue === undefined) {
+        if (field.defaultValue !== undefined) {
+          _coercedValue[field.name] = field.defaultValue;
+        } else if ((0, _definition.isNonNullType)(field.type)) {
+          var typeStr = (0, _inspect.default)(field.type);
+          onError((0, _Path.pathToArray)(path), inputValue, new _GraphQLError.GraphQLError("Field ".concat(field.name, " of required type ").concat(typeStr, " was not provided.")));
+        }
+
+        continue;
+      }
+
+      _coercedValue[field.name] = coerceInputValueImpl(fieldValue, field.type, onError, (0, _Path.addPath)(path, field.name));
+    } // Ensure every provided field is defined.
+
+
+    for (var _i4 = 0, _Object$keys2 = Object.keys(inputValue); _i4 < _Object$keys2.length; _i4++) {
+      var fieldName = _Object$keys2[_i4];
+
+      if (!fieldDefs[fieldName]) {
+        var suggestions = (0, _suggestionList.default)(fieldName, Object.keys(type.getFields()));
+        onError((0, _Path.pathToArray)(path), inputValue, new _GraphQLError.GraphQLError("Field \"".concat(fieldName, "\" is not defined by type ").concat(type.name, ".") + (0, _didYouMean.default)(suggestions)));
+      }
+    }
+
+    return _coercedValue;
+  }
+
+  if ((0, _definition.isScalarType)(type)) {
+    var parseResult; // Scalars determine if a input value is valid via parseValue(), which can
+    // throw to indicate failure. If it throws, maintain a reference to
+    // the original error.
+
+    try {
+      parseResult = type.parseValue(inputValue);
+    } catch (error) {
+      onError((0, _Path.pathToArray)(path), inputValue, new _GraphQLError.GraphQLError("Expected type ".concat(type.name, ". ") + error.message, undefined, undefined, undefined, undefined, error));
+      return;
+    }
+
+    if (parseResult === undefined) {
+      onError((0, _Path.pathToArray)(path), inputValue, new _GraphQLError.GraphQLError("Expected type ".concat(type.name, ".")));
+    }
+
+    return parseResult;
+  }
+
+  /* istanbul ignore else */
+  if ((0, _definition.isEnumType)(type)) {
+    if (typeof inputValue === 'string') {
+      var enumValue = type.getValue(inputValue);
+
+      if (enumValue) {
+        return enumValue.value;
+      }
+    }
+
+    var _suggestions = (0, _suggestionList.default)(String(inputValue), type.getValues().map(function (enumValue) {
+      return enumValue.name;
+    }));
+
+    onError((0, _Path.pathToArray)(path), inputValue, new _GraphQLError.GraphQLError("Expected type ".concat(type.name, ".") + (0, _didYouMean.default)(_suggestions)));
+    return;
+  } // Not reachable. All possible input types have been considered.
+
+
+  /* istanbul ignore next */
+  (0, _invariant.default)(false, 'Unexpected input type: ' + (0, _inspect.default)(type));
+}