😉 A day as a Remote Software Engineer in Helsinki, Finland

I've always wanted to create a video series to share my experiences and work style as a remote software engineer. I finally started this journey and am excited to make more videos like this...

nairi

✌️ ECMAScript Safe Assignment Operator Proposal

We often feature ECMAScript proposals that are in their later stages, but how about a brand new one you could get involved with? This one proposes an interesting additional bit of language syntax (`?=`) that returns a [error, value] tuple from an assignment.

Arthur Fiorette

😭 ...

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World Class Web Components

❓ CHALLENGE

const weakMap = new WeakMap();
const obj = {};

(function() {
  const internalObj = {};
  weakMap.set(internalObj, 'hidden');
  obj.ref = internalObj;
})();

delete obj.ref;

const result = weakMap.has(obj.ref);

console.log(result);

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World Class Web Components

🔥 Google takes its biggest L ever... now a convicted monopolist

Fireship

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World Class Web Components

❓ CHALLENGE

const weakMap = new WeakMap();
const array = [1, 2, 3];
const obj = {};

weakMap.set(obj, array);

const result = weakMap.get(obj).reduce((acc, val) => acc + val);

console.log(result);

Sponsored by Bryntum 👮‍♀️
World Class Web Components

😆 What about JavaScript?

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World Class Web Components

❓ CHALLENGE

const weakMap = new WeakMap();
const obj1 = {};
const obj2 = { key: 'value' };

weakMap.set(obj1, obj2);

const result = weakMap.get(obj1).key.split('').reverse().join('');

console.log(result);

Sponsored by Bryntum 👮‍♀️
World Class Web Components

👍 Volta 2.0: Install and Run JavaScript Tools Quickly

A long-standing Rust powered tool for installing and switching JavaScript related tools (like Node, TypeScript, Yarn, etc.) … “no matter the package manager, Node runtime, or OS.” GitHub repo.

Volta

Sponsored by Bryntum 👮‍♀️
World Class Web Components

❓ CHALLENGE

const weakMap = new WeakMap();
const objs = [{}, {}, {}];

objs.forEach((obj, index) => weakMap.set(obj, index + 1));

const result = objs.filter(obj => weakMap.has(obj)).map(obj => weakMap.get(obj) * 2);

console.log(result);

Sponsored by Bryntum 👮‍♀️
World Class Web Components

✌️ JavaScript Weekly #​701