53 lines
1.3 KiB
TypeScript
53 lines
1.3 KiB
TypeScript
import { RateAsset } from "@/lib/rates";
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function trimTrailingZeroes(value: string): string {
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return value.replace(/\.?0+$/, "");
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}
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export function formatAmount(value: number, asset: RateAsset): string {
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if (!Number.isFinite(value)) {
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return "-";
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}
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if (asset.type === "crypto") {
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if (value === 0) {
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return "0";
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}
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if (Math.abs(value) < 0.00000001) {
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return "<0.00000001";
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}
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const precision = asset.decimals ?? 8;
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const formatted = value.toLocaleString("en-US", {
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minimumFractionDigits: value < 1 ? 4 : 2,
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maximumFractionDigits: precision
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});
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return trimTrailingZeroes(formatted);
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}
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return value.toLocaleString("en-US", {
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minimumFractionDigits: 2,
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maximumFractionDigits: value < 1 ? 6 : 4
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});
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}
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export function formatRate(from: RateAsset, to: RateAsset): string {
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const rate = from.usdPrice / to.usdPrice;
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return formatAmount(rate, to);
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}
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export function formatInverseRate(from: RateAsset, to: RateAsset): string {
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const inverse = to.usdPrice / from.usdPrice;
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return formatAmount(inverse, from);
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}
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export function formatTimestamp(value: string): string {
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const date = new Date(value);
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return new Intl.DateTimeFormat("en-US", {
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dateStyle: "medium",
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timeStyle: "short"
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}).format(date);
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}
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