MariusBongarts

interface Context {
    name: string;
    metadata: Record<PropertyKey, unknown>;
}

function setMetadata(_target: any, context: Context) {
    context.metadata[context.name] = true;
}

class SomeClass {

MariusBongarts

declare let array: string[] | number[];

array.filter(x => !!x);
//    ~~~~~~ error!

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// ❌ error before Typescript 5.2
type MixedTupleRest = [first: string, ...string[]];

// ✅ fixed with label
type MixedTupleRestFixed = [first: string, ...rest: string[]];

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// ❌ error before Typescript 5.2
type MixedTuple = [first: string, string];

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type UnlabeledTuple = [string, string];

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type LabeledTuple = [first: string, second: string];

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import fs from "fs/promises";

const getFileResource = async (path: string) => {
  const fileResource = await fs.open(path, "r");
  return {
    fileResource,
    [Symbol.asyncDispose]: async () => {
      await fileResource?.close();
      console.log("Cleanup done");      
    },

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(async () => {
  let fileResource;
  try {
    fileResource = await fs.open("file.txt", "r");
    // Do stuff with fileResource
  } finally {
    await fileResource?.close();
    console.log("Cleanup done");
  }
})();

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{
  const getResource = () => {
    return {
      [Symbol.dispose]: () => {
        console.log('Clean up done!')
      }
    }
  }
  using resource = getResource();
} // 'Clean up done!' logged to console because `resource` left the scope

MariusBongarts

NEON COLORS:

• Neon Orange: #ffad2a (RGB: 255, 173, 42)
• Neon Red: #f887f (RGB: 248, 135, 127)
• Neon Yellow: #f8fc46 (RGB: 248, 252, 70)
• Neon Green: #77e68a (RGB: 119, 230, 138)
• Olive Green: #00c87a (RGB: 0, 200, 122)
• Neon Blue: #3cbefc (RGB: 60, 190, 252)
• Neon Violet: #9d64e2 (RGB: 157, 100, 226)
• Neon Pink: #fb83b3 (RGB: 251, 131, 179)
• Lilac: #f447d1 (RGB: 244, 71, 209)