Question: I'm having hard time saving some polish characters like 'Ł' to a ascii file.

```
const fs = require('fs');
fs.writeFileSync('ascii.txt','Ł','ascii');

```

I would like the output file to show 'Ł' character.
I tried buffers etc no luck.
Can't figure out how to do this.

Answer: 
It is not possible.

Neither characters are part of the [ASCII standard](https://en.wikipedia.org/wiki/ASCII).

To save such characters to a file, you need to encode the file with a different encoding, such as [UTF-8](https://en.wikipedia.org/wiki/UTF-8).
ASCII does not have polish characters. See here:
[ASCII TABLE](http://www.asciitable.com/)