@nestjs/graphql
Version:
Nest - modern, fast, powerful node.js web framework (@graphql)
75 lines (74 loc) • 3.39 kB
JavaScript
;
Object.defineProperty(exports, "__esModule", { value: true });
exports.PartialType = void 0;
const shared_utils_1 = require("@nestjs/common/utils/shared.utils");
const mapped_types_1 = require("@nestjs/mapped-types");
const decorators_1 = require("../decorators");
const metadata_loader_1 = require("../plugin/metadata-loader");
const plugin_constants_1 = require("../plugin/plugin-constants");
const get_fields_and_decorator_util_1 = require("../schema-builder/utils/get-fields-and-decorator.util");
const type_helpers_utils_1 = require("./type-helpers.utils");
function isPartialTypeOptions(optionsOrDecorator) {
return (optionsOrDecorator &&
('decorator' in optionsOrDecorator ||
'omitDefaultValues' in optionsOrDecorator));
}
function PartialType(classRef, optionsOrDecorator) {
const { fields, decoratorFactory } = (0, get_fields_and_decorator_util_1.getFieldsAndDecoratorForType)(classRef);
class PartialObjectType {
constructor() {
(0, mapped_types_1.inheritPropertyInitializers)(this, classRef);
}
}
let decorator;
let omitDefaultValues = false;
if (isPartialTypeOptions(optionsOrDecorator)) {
decorator = optionsOrDecorator.decorator;
omitDefaultValues = optionsOrDecorator.omitDefaultValues;
}
else {
decorator = optionsOrDecorator;
}
if (decorator) {
decorator({ isAbstract: true })(PartialObjectType);
}
else {
decoratorFactory({ isAbstract: true })(PartialObjectType);
}
(0, mapped_types_1.inheritValidationMetadata)(classRef, PartialObjectType);
(0, mapped_types_1.inheritTransformationMetadata)(classRef, PartialObjectType);
function applyFields(fields) {
fields.forEach((item) => {
if ((0, shared_utils_1.isFunction)(item.typeFn)) {
// Execute type function eagerly to update the type options object (before "clone" operation)
// when the passed function (e.g., @Field(() => Type)) lazily returns an array.
item.typeFn();
}
(0, decorators_1.Field)(item.typeFn, {
...item.options,
nullable: true,
defaultValue: omitDefaultValues ? undefined : item.options.defaultValue,
})(PartialObjectType.prototype, item.name);
(0, mapped_types_1.applyIsOptionalDecorator)(PartialObjectType, item.name);
(0, type_helpers_utils_1.applyFieldDecorators)(PartialObjectType, item);
});
}
applyFields(fields);
// Register a refresh hook to update the fields when the serialized metadata
// is loaded from file.
metadata_loader_1.MetadataLoader.addRefreshHook(() => {
const { fields } = (0, get_fields_and_decorator_util_1.getFieldsAndDecoratorForType)(classRef, {
overrideFields: true,
});
applyFields(fields);
});
if (PartialObjectType[plugin_constants_1.METADATA_FACTORY_NAME]) {
const pluginFields = Object.keys(PartialObjectType[plugin_constants_1.METADATA_FACTORY_NAME]());
pluginFields.forEach((key) => (0, mapped_types_1.applyIsOptionalDecorator)(PartialObjectType, key));
}
Object.defineProperty(PartialObjectType, 'name', {
value: `Partial${classRef.name}`,
});
return PartialObjectType;
}
exports.PartialType = PartialType;