Error with plural before "mille" (thousand) in French

[killianhuyghe]

Hello, thank you for this package, this is the most accurate I have seen for French numbers.

There is just one case that isn't handled correctly: the word "mille" (thousand) in french is a numeral adjective (same as "un", "deux", "trois", etc), which means that the word immediately before it shouldn't be plural (as opposed to "millions", "milliards" and following, which are common nouns).

e.g.

writtenNumber(201, { lang: "fr" }); // "deux cent un" ✅
writtenNumber(200000, { lang: "fr" }); // "deux cents mille" ❌ -> should be "deux cent mille" (same rule as 201)
writtenNumber(200000000, { lang: "fr" }); // "deux cents millions" ✅ (this is correct, "millions" is not a numeral adjective)

writtenNumber(81, { lang: "fr" }); // "quatre-vingt-un" ✅
writtenNumber(800000, { lang: "fr" }); // "quatre-vingts mille" ❌ -> should be "quatre-vingt mille" (similar to 81 rule, but no dash)
writtenNumber(800000000, { lang: "fr" }); // "quatre-vingts millions" ✅ (this is correct, "millions" is not a numeral adjective)

[forzagreen]

Hi @killianhuyghe , this repo has very little maintenance. You can try https://github.com/forzagreen/n2words . I tried all your examples, they work correctly with n2words