@nestjs/common
Version:
Nest - modern, fast, powerful node.js web framework (@common)
32 lines (31 loc) • 1.48 kB
JavaScript
;
Object.defineProperty(exports, "__esModule", { value: true });
exports.createParamDecorator = createParamDecorator;
const uid_1 = require("uid");
const constants_1 = require("../../constants");
const assign_custom_metadata_util_1 = require("../../utils/assign-custom-metadata.util");
const shared_utils_1 = require("../../utils/shared.utils");
/**
* Defines HTTP route param decorator
*
* @param factory
* @param enhancers
*
* @publicApi
*/
function createParamDecorator(factory, enhancers = []) {
const paramtype = (0, uid_1.uid)(21);
return (data, ...pipes) => (target, key, index) => {
const args = Reflect.getMetadata(constants_1.ROUTE_ARGS_METADATA, target.constructor, key) || {};
const isPipe = (pipe) => pipe &&
(((0, shared_utils_1.isFunction)(pipe) &&
pipe.prototype &&
(0, shared_utils_1.isFunction)(pipe.prototype.transform)) ||
(0, shared_utils_1.isFunction)(pipe.transform));
const hasParamData = (0, shared_utils_1.isNil)(data) || !isPipe(data);
const paramData = hasParamData ? data : undefined;
const paramPipes = hasParamData ? pipes : [data, ...pipes];
Reflect.defineMetadata(constants_1.ROUTE_ARGS_METADATA, (0, assign_custom_metadata_util_1.assignCustomParameterMetadata)(args, paramtype, index, factory, paramData, ...paramPipes), target.constructor, key);
enhancers.forEach(fn => fn(target, key, index));
};
}