RunKit + 
Try any Node.js package right in your browser
This is a playground to test code. It runs a full Node.js environment and already has all of npm’s 1,000,000+ packages pre-installed, including @lamnhan/ngx-useful. Try it out:
require("@angular/common/package.json"); // @angular/common is a peer dependency.
require("@angular/core/package.json"); // @angular/core is a peer dependency.
require("@angular/platform-browser/package.json"); // @angular/platform-browser is a peer dependency.
require("@angular/router/package.json"); // @angular/router is a peer dependency.
require("@lamnhan/schemata/package.json"); // @lamnhan/schemata is a peer dependency.
require("howler/package.json"); // howler is a peer dependency.
require("localforage/package.json"); // localforage is a peer dependency.
require("rxjs/package.json"); // rxjs is a peer dependency.
var ngxUseful = require("@lamnhan/ngx-useful")
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require()any package directly from npm- use arrow functions, classes, template strings, and most of ES6
awaitany promise instead of using callbacks (example)- create your own embedded node.js snippets
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