@nestjs/graphql
Version:
Nest - modern, fast, powerful node.js web framework (@graphql)
70 lines (69 loc) • 3.04 kB
JavaScript
;
Object.defineProperty(exports, "__esModule", { value: true });
exports.getFieldsAndDecoratorForType = void 0;
require("reflect-metadata");
const decorators_1 = require("../../decorators");
const class_type_enum_1 = require("../../enums/class-type.enum");
const graphql_constants_1 = require("../../graphql.constants");
const unable_to_find_fields_error_1 = require("../errors/unable-to-find-fields.error");
const lazy_metadata_storage_1 = require("../storages/lazy-metadata.storage");
const type_metadata_storage_1 = require("../storages/type-metadata.storage");
function getFieldsAndDecoratorForType(objType, options) {
const classType = Reflect.getMetadata(graphql_constants_1.CLASS_TYPE_METADATA, objType);
if (!classType) {
throw new unable_to_find_fields_error_1.UnableToFindFieldsError(objType.name);
}
lazy_metadata_storage_1.LazyMetadataStorage.load([objType], {
skipFieldLazyMetadata: true,
});
const [classMetadata, decoratorFactory] = getClassMetadataAndFactoryByTargetAndType(classType, objType);
type_metadata_storage_1.TypeMetadataStorage.loadClassPluginMetadata([classMetadata]);
type_metadata_storage_1.TypeMetadataStorage.compileClassMetadata([classMetadata], options);
let fields = classMetadata?.properties;
if (!fields) {
throw new unable_to_find_fields_error_1.UnableToFindFieldsError(objType.name);
}
fields = inheritClassFields(objType, fields, options);
return {
fields,
decoratorFactory,
};
}
exports.getFieldsAndDecoratorForType = getFieldsAndDecoratorForType;
function getClassMetadataAndFactoryByTargetAndType(classType, objType) {
switch (classType) {
case class_type_enum_1.ClassType.ARGS:
return [
type_metadata_storage_1.TypeMetadataStorage.getArgumentsMetadataByTarget(objType),
decorators_1.ArgsType,
];
case class_type_enum_1.ClassType.OBJECT:
return [
type_metadata_storage_1.TypeMetadataStorage.getObjectTypeMetadataByTarget(objType),
decorators_1.ObjectType,
];
case class_type_enum_1.ClassType.INPUT:
return [
type_metadata_storage_1.TypeMetadataStorage.getInputTypeMetadataByTarget(objType),
decorators_1.InputType,
];
case class_type_enum_1.ClassType.INTERFACE:
return [
type_metadata_storage_1.TypeMetadataStorage.getInterfaceMetadataByTarget(objType),
decorators_1.InterfaceType,
];
}
}
function inheritClassFields(objType, fields, options) {
try {
const parentClass = Object.getPrototypeOf(objType);
if (parentClass === Function) {
return fields;
}
const { fields: parentFields } = getFieldsAndDecoratorForType(parentClass, options);
return inheritClassFields(parentClass, [...parentFields, ...fields], options);
}
catch (err) {
return fields;
}
}