wycats

import { CachedFormula, Cell, Formula } from "@starbeam-lite/core";
import { EventRecorder, TestScheduler } from "@workspace/test-utils";
import { describe, expect, it } from "vitest";
import { subscribe } from "../src/subtle";
import { TAG } from "@starbeam-lite/shared";

describe("subscribe", () => {
  describe("equivalent to Signal.subtle.Watcher (ported tests)", () => {
    it("should work", () => {
      const events = new EventRecorder();

wycats

Ember's new GJS syntax is now supported by GitHub!

GJS

A boring component:

class ActionButton extends Component {
  <template>
 

wycats

Starbeam Renderers

Framework	Renderer Status	Spec Compatibility
React	released	next release
Preact	released	next release
Vue	next release	next release
Svelte	designing	-
Ember	designing	-
Solid	roadmap	-

wycats

Getter-Only Auto-Accessor Decorators

Broadly speaking, the idea is that you should be able to create an accessor decorator that doesn't expose a setter.

I think the most natural way to express this is for the set function returned by an accessor decorator to have a never return type. The idea is that such a decorator would result in the type system treating the resulting field as if it was a manually written getter without a setter.

Here's an example scenario:

import { Friend } from "hypothetical-lib";

wycats

{
  "public": true
}

wycats

October 25, 2022 to November 4, 2022

Generics around missingness

function Name<S extends string | undefined>(name: S): S {
  return name;
}

wycats

Making unique-id a importable function

The Use Cases

import { uniqueId } from "@ember/???";

<template>
  {{#let (unique-id) as |id|}}

wycats

Factories

A factory is a function that returns a new reactive object.

• Reactive Factories return reactive objects.
• Resource Factories also return reactive objects, but they also register cleanup functions that are called when the object is no longer needed.

You can use a class as a factory, but it's not required. When you use a class as a factory, its constructor must take zero required arguments.

wycats

I'm assuming these are all talking about cases that didn't already have semis:

Top-Level TemplateDeclaration

<template>
  Hello
</template>|
//         ^ 🚫

wycats

import { Cell } from "@starbeam/core";
import { useSetup } from "@starbeam/react";

const SYSTEM_LOCALE = Intl.DateTimeFormat().resolvedOptions().locale;
const SYSTEM_TZ = Intl.DateTimeFormat().resolvedOptions().timeZone;

function Clock({ locale = SYSTEM_LOCALE, timeZone = SYSTEM_TZ }) {
  const now = useSetup((component) => { 
    const now = Cell(new Date()));