Because making new frameworks like Next.js is relatively easy nowadays, someone with enough social influence can literally destroy Vercel's business by popularising some other framework, which, by the way, would have nearly identical problems anyway, because this was mostly the React problem itself.
Tigran Bayburtsyan
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❤6🤔2
CHALLENGE
const obj = { a: 1, b: 2, c: 3 };
Object.defineProperty(obj, 'd', {
value: 4,
enumerable: false
});
const entries = Object.entries(obj);
const keys = Object.keys(obj);
const values = Object.values(obj);
console.log(entries.length + keys.length + values.length);❤6🤩1
In many situations, you don’t need a full-on framework to build useful tools; just HTML, JavaScript and CSS in a single file will do the job fine. Simon’s become a bit of an expert by rolling out many such tools using LLMs, and shares his process and practices here. More please!
Simon Willison
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❤7👍2
CHALLENGE
function Vehicle(type) {
this.type = type;
}
Vehicle.prototype.wheels = 4;
Vehicle.prototype.getInfo = function() {
return `${this.type}: ${this.wheels}`;
};
const car = new Vehicle('Car');
const bike = Object.create(car);
bike.type = 'Bike';
bike.wheels = 2;
console.log(car.getInfo() + ' | ' + bike.getInfo());❤7
What is the output?
Anonymous Quiz
49%
Car: 4 | Bike: 2
25%
Car: 4 | Bike: undefined
22%
TypeError: bike.getInfo is not a function
3%
Car: 4 | undefined: 2
The Remix Store is a swag store for the Remix project and its codebase provides a powerful example of how Remix’s own core team builds apps with Remix and Hydrogen.
Brooks Lybrand and the Remix Team
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❤4👍1🔥1
CHALLENGE
const x = null;
const y = undefined;
const z = 0;
const result1 = x ?? 'default';
const result2 = y ?? 'default';
const result3 = z ?? 'default';
const combined = result1 ? result2 ? result3 : 'B' : 'C';
console.log(combined);
❤3👍1🔥1
🔥4❤3👍3
CHALLENGE
function Vehicle(type) {
this.type = type;
this.wheels = 4;
}
Vehicle.prototype.describe = function() {
return `${this.type} with ${this.wheels} wheels`;
};
const car = new Vehicle('Car');
const bike = Vehicle('Bike');
console.log(car.describe());
console.log(typeof bike);
console.log(globalThis.type);What is the output?
Anonymous Quiz
27%
Car with 4 wheels undefined Bike
35%
Car with 4 wheels undefined undefined
27%
Car with 4 wheels object undefined
11%
Car with 4 wheels object Bike
👍2❤1🔥1
CHALLENGE
const json = '{"name":"Sarah","age":25,"active":true}';
const obj = JSON.parse(json);
obj.name = "Emma";
obj.age++;
const json2 = JSON.stringify(obj);
const obj2 = JSON.parse(json2);
obj.age = 100;
console.log(obj2.age);🤔5❤3🔥2👍1
CHALLENGE
const multiplier = 3;
function createCounter() {
let count = 0;
const multiplier = 5;
return function() {
count++;
return count * multiplier;
};
}
const counter = createCounter();
console.log(counter());
console.log(counter());
console.log(multiplier);
❤3🔥1
❤6👍3
Gold quietly hit a new record in 2025
Some assets move fast, others move steadily, but both say something about how we react to risk.
How well do you read these shifts?
Check yourself by taking a short quiz.
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CHALLENGE
const x = 0.1 + 0.2;
const y = 0.3;
console.log(x === y);
console.log(x.toFixed(1) === y.toFixed(1));
console.log(+x.toFixed(1) === +y.toFixed(1));
const num = 42;
console.log(num.toString(2));
console.log(parseInt('101010', 2));
What is the output?
Anonymous Quiz
14%
false false true 101010 42
23%
false true true 101010 101010
39%
true true true 101010 42
25%
false true true 101010 42
❤5
CHALLENGE
const x = 5;
const y = 10;
const result = `${x + y}`;
const nested = `Value: ${`${x}` + `${y}`}`;
const expr = `${x}${y}`;
console.log(result);
console.log(nested);
console.log(expr);
console.log(typeof result);
What is the output?
Anonymous Quiz
24%
15 Value: 15 510 string
30%
15 Value: 510 15 string
8%
510 Value: 15 510 string
37%
15 Value: 510 510 string
👍4🤔2🤩1