Discussion on: TypeScript is wasting my time

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Replies for: I cursed a lot when I started to use typescript as well. I felt as if someone tied rocks to my hands when I was able to write perfectly working JS ...

As stated 2 times, I know this is mostly due to a lack of knowledge. So thanks a lot for the encouragements. I'm fully aware that a project with 80K stars and 33K commits over 650 contributors is not a failure.

Also, thanks for the two advices. BTW, @ryands17 taught me that Intl.NumberFormatOptions is an existing type.

Lioness100 • Apr 23 '22 • Edited

An easier way to do this is

const options = {
  ...
} as const;

The "const assertion" will concrete the value to "compact" instead of string

Edit: oops, someone already mentioned that, sorry.

Roman • Apr 26 '22

You should specify that notation not just the string type but concrete type Intl.NumberFormatOptions['notation']

  function formatNumber(value: number, lang: string = 'en') {
  const options = {
    notation: 'compact' as Intl.NumberFormatOptions['notation'],
    maximumFractionDigits: 1,
  };
   const formatter = Intl.NumberFormat(lang, options);
   return formatter.format(value);
}