size) { const { result, iterator } = await Promise.race(promises.values()); if (result.done) { promises.delete(iterator); } else { promises.set(iterator, nextResultWithItsIterator(iterator)); yield result.value; } } } Run code snippet Expand snippet There's a lot of m...
This project in Chapter09 uses the @ sign in its import statements but the webpack.config.js file doesn't have a path resolve statement: let service = process.VUE_CLI_SERVICE if (!service || process.env.VUE_CLI_API_MODE) { const Service = require('./lib/Service') s...
Another problem with using object literals (pre-ES6), is property/key orders are not guaranteed. Just because you have added the keys in a certain order, does not mean they will remain in that order, when you iterate through the keys. var o = {}o.a = 1o.b = 2o.c = 3 for(key...
How to understand as const? What does declare global mean? How to add a global variable to the TypeScript environment? Can interface be inherited? What does & mean in typescript? What is the difference between interface and type? What does enum mean as a type? What does the declare modul...
Okay, let me be slightly more nuanced about that statement: a few years ago Bootstrap had its merits (and I guess it still does). You can use it to quickly whip up a UI. I mean, it looks like every other UI you whipped up, but at least it isn’t totally horrible to look at....
Even more troubling, I discovered that my entire understanding of function names in JavaScript was completely wrong. After a few hours of existential thrashing (“What does it mean to have a name?”, “Am I a real boy?”, etc.), I decided to research the issue and learn the correct ...
JavaScript concepts that are particularly relevant and commonly used in React development include:Variables and Data Types: Understanding how to declare variables (let, const, var) and the various data types (string, number, boolean, object, array) is fundamental for working with React components ...
Before delving into the ‘Webpack in React Js’ blog, a foundational understanding of React fundamentals is crucial. Familiarity with JavaScript, ES6 syntax, and basic knowledge of Node.Js and npm are prerequisites. A grasp of HTML and CSS, as well as a code editor, is recommended. This ...
constwait=time=>newPromise((resolve)=>setTimeout(resolve,time));wait(3000).then(()=>console.log('Hello!'));// 'Hello!' wait — promise example on CodePen Ourwait(3000)call will wait 3000ms (3 seconds), and then log'Hello!'. All spec-compatible promises define a.then()method...
See Allow captured let/const in loops Example See Example Improved checking for for..in statements See Improved checking for for..in statements Example See Example Modules are now emitted with a "use strict"; prologue See Modules are now emitted with a "use strict"; prologue Including .js fi...