195 lines
6.3 KiB
JavaScript
195 lines
6.3 KiB
JavaScript
function _typeof(obj) { if (typeof Symbol === "function" && typeof Symbol.iterator === "symbol") { _typeof = function _typeof(obj) { return typeof obj; }; } else { _typeof = function _typeof(obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; }; } return _typeof(obj); }
|
|
|
|
/**
|
|
* Copyright (c) 2015-present, Facebook, Inc.
|
|
*
|
|
* This source code is licensed under the MIT license found in the
|
|
* LICENSE file in the root directory of this source tree.
|
|
*
|
|
* strict
|
|
*/
|
|
import { forEach, isCollection } from 'iterall';
|
|
import inspect from '../jsutils/inspect';
|
|
import isInvalid from '../jsutils/isInvalid';
|
|
import orList from '../jsutils/orList';
|
|
import suggestionList from '../jsutils/suggestionList';
|
|
import { GraphQLError } from '../error/GraphQLError';
|
|
import { isScalarType, isEnumType, isInputObjectType, isListType, isNonNullType } from '../type/definition';
|
|
|
|
/**
|
|
* Coerces a JavaScript value given a GraphQL Type.
|
|
*
|
|
* Returns either a value which is valid for the provided type or a list of
|
|
* encountered coercion errors.
|
|
*
|
|
*/
|
|
export function coerceValue(value, type, blameNode, path) {
|
|
// A value must be provided if the type is non-null.
|
|
if (isNonNullType(type)) {
|
|
if (value == null) {
|
|
return ofErrors([coercionError("Expected non-nullable type ".concat(inspect(type), " not to be null"), blameNode, path)]);
|
|
}
|
|
|
|
return coerceValue(value, type.ofType, blameNode, path);
|
|
}
|
|
|
|
if (value == null) {
|
|
// Explicitly return the value null.
|
|
return ofValue(null);
|
|
}
|
|
|
|
if (isScalarType(type)) {
|
|
// Scalars determine if a value is valid via parseValue(), which can
|
|
// throw to indicate failure. If it throws, maintain a reference to
|
|
// the original error.
|
|
try {
|
|
var parseResult = type.parseValue(value);
|
|
|
|
if (isInvalid(parseResult)) {
|
|
return ofErrors([coercionError("Expected type ".concat(type.name), blameNode, path)]);
|
|
}
|
|
|
|
return ofValue(parseResult);
|
|
} catch (error) {
|
|
return ofErrors([coercionError("Expected type ".concat(type.name), blameNode, path, error.message, error)]);
|
|
}
|
|
}
|
|
|
|
if (isEnumType(type)) {
|
|
if (typeof value === 'string') {
|
|
var enumValue = type.getValue(value);
|
|
|
|
if (enumValue) {
|
|
return ofValue(enumValue.value);
|
|
}
|
|
}
|
|
|
|
var suggestions = suggestionList(String(value), type.getValues().map(function (enumValue) {
|
|
return enumValue.name;
|
|
}));
|
|
var didYouMean = suggestions.length !== 0 ? "did you mean ".concat(orList(suggestions), "?") : undefined;
|
|
return ofErrors([coercionError("Expected type ".concat(type.name), blameNode, path, didYouMean)]);
|
|
}
|
|
|
|
if (isListType(type)) {
|
|
var itemType = type.ofType;
|
|
|
|
if (isCollection(value)) {
|
|
var errors;
|
|
var coercedValue = [];
|
|
forEach(value, function (itemValue, index) {
|
|
var coercedItem = coerceValue(itemValue, itemType, blameNode, atPath(path, index));
|
|
|
|
if (coercedItem.errors) {
|
|
errors = add(errors, coercedItem.errors);
|
|
} else if (!errors) {
|
|
coercedValue.push(coercedItem.value);
|
|
}
|
|
});
|
|
return errors ? ofErrors(errors) : ofValue(coercedValue);
|
|
} // Lists accept a non-list value as a list of one.
|
|
|
|
|
|
var coercedItem = coerceValue(value, itemType, blameNode);
|
|
return coercedItem.errors ? coercedItem : ofValue([coercedItem.value]);
|
|
}
|
|
|
|
if (isInputObjectType(type)) {
|
|
if (_typeof(value) !== 'object') {
|
|
return ofErrors([coercionError("Expected type ".concat(type.name, " to be an object"), blameNode, path)]);
|
|
}
|
|
|
|
var _errors;
|
|
|
|
var _coercedValue = {};
|
|
var fields = type.getFields(); // Ensure every defined field is valid.
|
|
|
|
for (var fieldName in fields) {
|
|
if (hasOwnProperty.call(fields, fieldName)) {
|
|
var field = fields[fieldName];
|
|
var fieldValue = value[fieldName];
|
|
|
|
if (isInvalid(fieldValue)) {
|
|
if (!isInvalid(field.defaultValue)) {
|
|
_coercedValue[fieldName] = field.defaultValue;
|
|
} else if (isNonNullType(field.type)) {
|
|
_errors = add(_errors, coercionError("Field ".concat(printPath(atPath(path, fieldName)), " of required ") + "type ".concat(inspect(field.type), " was not provided"), blameNode));
|
|
}
|
|
} else {
|
|
var coercedField = coerceValue(fieldValue, field.type, blameNode, atPath(path, fieldName));
|
|
|
|
if (coercedField.errors) {
|
|
_errors = add(_errors, coercedField.errors);
|
|
} else if (!_errors) {
|
|
_coercedValue[fieldName] = coercedField.value;
|
|
}
|
|
}
|
|
}
|
|
} // Ensure every provided field is defined.
|
|
|
|
|
|
for (var _fieldName in value) {
|
|
if (hasOwnProperty.call(value, _fieldName)) {
|
|
if (!fields[_fieldName]) {
|
|
var _suggestions = suggestionList(_fieldName, Object.keys(fields));
|
|
|
|
var _didYouMean = _suggestions.length !== 0 ? "did you mean ".concat(orList(_suggestions), "?") : undefined;
|
|
|
|
_errors = add(_errors, coercionError("Field \"".concat(_fieldName, "\" is not defined by type ").concat(type.name), blameNode, path, _didYouMean));
|
|
}
|
|
}
|
|
}
|
|
|
|
return _errors ? ofErrors(_errors) : ofValue(_coercedValue);
|
|
}
|
|
/* istanbul ignore next */
|
|
|
|
|
|
throw new Error("Unexpected type: ".concat(type, "."));
|
|
}
|
|
|
|
function ofValue(value) {
|
|
return {
|
|
errors: undefined,
|
|
value: value
|
|
};
|
|
}
|
|
|
|
function ofErrors(errors) {
|
|
return {
|
|
errors: errors,
|
|
value: undefined
|
|
};
|
|
}
|
|
|
|
function add(errors, moreErrors) {
|
|
return (errors || []).concat(moreErrors);
|
|
}
|
|
|
|
function atPath(prev, key) {
|
|
return {
|
|
prev: prev,
|
|
key: key
|
|
};
|
|
}
|
|
|
|
function coercionError(message, blameNode, path, subMessage, originalError) {
|
|
var pathStr = printPath(path); // Return a GraphQLError instance
|
|
|
|
return new GraphQLError(message + (pathStr ? ' at ' + pathStr : '') + (subMessage ? '; ' + subMessage : '.'), blameNode, undefined, undefined, undefined, originalError);
|
|
} // Build a string describing the path into the value where the error was found
|
|
|
|
|
|
function printPath(path) {
|
|
var pathStr = '';
|
|
var currentPath = path;
|
|
|
|
while (currentPath) {
|
|
pathStr = (typeof currentPath.key === 'string' ? '.' + currentPath.key : '[' + String(currentPath.key) + ']') + pathStr;
|
|
currentPath = currentPath.prev;
|
|
}
|
|
|
|
return pathStr ? 'value' + pathStr : '';
|
|
}
|
|
|
|
var hasOwnProperty = Object.prototype.hasOwnProperty; |