A practical walkthrough of handling financial precision in JavaScript when working with blockchain-based stablecoins like USDC. Covers why floating-point arithmetic fails for token amounts with many decimals, and presents two TypeScript helper functions using BigInt: `toUsdcSubunits()` to convert human-readable USDC strings to integer subunits, and `formatUsdcSubunits()` to display subunit values with configurable decimal places. Also includes a real-world example of calculating transaction fees expressed in basis points using BigInt arithmetic to avoid precision loss.
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Really tiny paymentsBlockchains as financial railsStablecoins poised for mainstream adoptionI find basis points annoying. Sue me.Wrapping upReferencesSort: