Document more about challenges in the current ecosystem

[littledan]

The README asserts that not having a decimal type causes problems for JavaScript programmers. Have you faced these problems? If we could document them with the proposal, or link to references, it would be very helpful.

[magnusjt]

Yes, I've had plenty of issues. It seems no-one manages to cover all edge cases when handling money without bigdecimals. Here's a list of issues I've opened over the years:

ikr/money-math#28
dinerojs/dinero.js#7
dinerojs/dinero.js#8 (closed, but not fixed I think)
davidkalosi/js-money#32
ikr/money-math#34

Also:
openexchangerates/accounting.js#222

Some try to use integers, but in addition to the issues noted in this proposal:

• Without bigints you'll have a hard time with crypto currencies that have many decimals
• Currency exchange often use decimals, and you can't just multiply an integer number of cents with a decimal and get the correct solution