@nestjs/core/middleware/utils.js

Nest - modern, fast, powerful node.js web framework (@core)

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
const shared_utils_1 = require("@nestjs/common/utils/shared.utils");
const uuid = require("uuid/v4");
exports.filterMiddleware = (middleware) => {
    return []
        .concat(middleware)
        .filter(shared_utils_1.isFunction)
        .map(exports.mapToClass);
};
exports.mapToClass = (middleware) => {
    if (isClass(middleware)) {
        return middleware;
    }
    return assignToken(class {
        constructor() {
            this.use = (...params) => middleware(...params);
        }
    });
};
function isClass(middleware) {
    return middleware.toString().substring(0, 5) === 'class';
}
exports.isClass = isClass;
function assignToken(metatype) {
    Object.defineProperty(metatype, 'name', { value: uuid() });
    return metatype;
}
exports.assignToken = assignToken;