@nestjs/common
Version:
Nest - modern, fast, powerful node.js web framework (@common)
30 lines (29 loc) • 1.43 kB
JavaScript
;
Object.defineProperty(exports, "__esModule", { value: true });
const uuid = require("uuid/v4");
const constants_1 = require("../../constants");
const shared_utils_1 = require("../../utils/shared.utils");
const assignCustomMetadata = (args, paramtype, index, factory, data, ...pipes) => (Object.assign({}, args, { [`${paramtype}${constants_1.CUSTOM_ROUTE_AGRS_METADATA}:${index}`]: {
index,
factory,
data,
pipes,
} }));
/**
* Defines HTTP route param decorator
* @param factory
*/
function createParamDecorator(factory, enhancers = []) {
const paramtype = uuid();
return (data, ...pipes) => (target, key, index) => {
const args = Reflect.getMetadata(constants_1.ROUTE_ARGS_METADATA, target.constructor, key) || {};
const isPipe = (pipe) => pipe &&
((shared_utils_1.isFunction(pipe) && pipe.prototype) || shared_utils_1.isFunction(pipe.transform));
const hasParamData = 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, assignCustomMetadata(args, paramtype, index, factory, paramData, ...paramPipes), target.constructor, key);
enhancers.forEach(fn => fn(target, key, index));
};
}
exports.createParamDecorator = createParamDecorator;