You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
59 lines
2.1 KiB
59 lines
2.1 KiB
import { GraphQLError } from "../../error/GraphQLError.mjs";
|
|
import { isObjectType, isInterfaceType, isInputObjectType } from "../../type/definition.mjs";
|
|
|
|
/**
|
|
* Unique field definition names
|
|
*
|
|
* A GraphQL complex type is only valid if all its fields are uniquely named.
|
|
*/
|
|
export function UniqueFieldDefinitionNamesRule(context) {
|
|
var schema = context.getSchema();
|
|
var existingTypeMap = schema ? schema.getTypeMap() : Object.create(null);
|
|
var knownFieldNames = Object.create(null);
|
|
return {
|
|
InputObjectTypeDefinition: checkFieldUniqueness,
|
|
InputObjectTypeExtension: checkFieldUniqueness,
|
|
InterfaceTypeDefinition: checkFieldUniqueness,
|
|
InterfaceTypeExtension: checkFieldUniqueness,
|
|
ObjectTypeDefinition: checkFieldUniqueness,
|
|
ObjectTypeExtension: checkFieldUniqueness
|
|
};
|
|
|
|
function checkFieldUniqueness(node) {
|
|
var _node$fields;
|
|
|
|
var typeName = node.name.value;
|
|
|
|
if (!knownFieldNames[typeName]) {
|
|
knownFieldNames[typeName] = Object.create(null);
|
|
} // istanbul ignore next (See: 'https://github.com/graphql/graphql-js/issues/2203')
|
|
|
|
|
|
var fieldNodes = (_node$fields = node.fields) !== null && _node$fields !== void 0 ? _node$fields : [];
|
|
var fieldNames = knownFieldNames[typeName];
|
|
|
|
for (var _i2 = 0; _i2 < fieldNodes.length; _i2++) {
|
|
var fieldDef = fieldNodes[_i2];
|
|
var fieldName = fieldDef.name.value;
|
|
|
|
if (hasField(existingTypeMap[typeName], fieldName)) {
|
|
context.reportError(new GraphQLError("Field \"".concat(typeName, ".").concat(fieldName, "\" already exists in the schema. It cannot also be defined in this type extension."), fieldDef.name));
|
|
} else if (fieldNames[fieldName]) {
|
|
context.reportError(new GraphQLError("Field \"".concat(typeName, ".").concat(fieldName, "\" can only be defined once."), [fieldNames[fieldName], fieldDef.name]));
|
|
} else {
|
|
fieldNames[fieldName] = fieldDef.name;
|
|
}
|
|
}
|
|
|
|
return false;
|
|
}
|
|
}
|
|
|
|
function hasField(type, fieldName) {
|
|
if (isObjectType(type) || isInterfaceType(type) || isInputObjectType(type)) {
|
|
return type.getFields()[fieldName] != null;
|
|
}
|
|
|
|
return false;
|
|
}
|