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This looks nice. One thing though - you should consider using strings instead of numbers for the amounts. The problem is that numbers in JS are actually floats, and you lose precision on high values. Probably not going to make a big difference, but e.g. 100000000000000001 can't be represented as a number in JS.

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> consider using strings

And because '1' + '1' === '11' is not the pinnacle of arithmetic either, consider using bignumber.js or a better language than JavaScript

So, what other language do you suggest for building an interactive web app?

The number of languages that compile to JS or WASM is increasing, maybe I'd use Elm or Rust.

Yes but would it solve the floating point inaccuracies? Compiled to JS is JS after all

you could enforce proper types that do not have any inaccuracies

Ah good call - I will definitely be switching to either strings or, as another commenter pointed out, BigNumber. Thanks for catching this!

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