Why are you making a shrine about a programming language? Shut up baby, because I can.

TypeScript is JavaScript with syntax for types.

Or... that's what they want you to think. It is not exactly 100% JavaScript compatibile, because it throws at least 10 type errors while migrating your middle-class project to TypeScript.

The most important feature of TypeScript is... actually not types, but autocompletion in your IDE. If you install for example @types/node, you'll get autocompletion for variables like process. This is JavaScript:

import { x } from 'random-thing';
x.name = 'x';

You need to write code with documentation, because your IDE interprets types like this:

import { x } from 'random-thing';
(x as any).name = 'x';

And any is well... any object / string / number / class / function / who cares.

If you know that x will have property name, to get intelephense, you need to write comments... Yeah, comments.

---

JSDoc is garbage. Do you really want to write:

import { x } from 'random-thing';

// @ts-check

/** @param {{name: string}} x */
function setname(x) {
    x.name = 'x';
}

setname(x);

You just need to switch to TypeScript, install required type packages and your life will get much easier. Even if there are no types, you can try:

import { x } from 'random-thing';

interface fixingtypes1 {
    name: string;
}

(x as fixingtypes1).name = 'x';

This may also seem like a lot cof code, but you can reuse it, for example:

import { x } from 'random-thing';

interface fixingtypes1 {
    name: string;
    age: number;
}

(x as fixingtypes1).name = 'x';
(x as fixingtypes1).age = 12;
(x as fixingtypes1).name = 'xb';
(x as fixingtypes1).age = 52;

But that's rarely the case.

In most cases you can write like that:

import { x } from 'random-thing';

x.name = 'x';

The same code as in JavaScript, but you get autocompletion! Awesome.

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