Safely use dynamic imports in Typescript

We can use import either as a statement to statically pull in code, or as a function that returns a Promise for our module:

let locale = await import('locale_us-en')

While we can pass an arbitrary expression that evaluates to a string to import, we lose type safety when we do. To safely use dynamic imports, be sure to either:

1. Pass a string literal directly to import, without assigning the string to a variable first.
2. Pass an expression to import and manually annotate the module’s signature:

import {locale} from './locales/locale-us';

async function main() {
	let userLocale = await getUserLocale();
	let path = `./locales/locale-${userLocale}`;
	let localeUS: typeof locale = await import(path);
}