Gerhard Scheikl
79 lines
2.3 KiB
TypeScript
79 lines
2.3 KiB
TypeScript
/**
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* Per-locale formatters used in PDF rendering. We pin these to specific
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* locales (de-AT for German invoices) so that the output is deterministic
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* regardless of the runtime's default locale.
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*/
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const MONEY_FORMATTERS = new Map<string, Intl.NumberFormat>();
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const QTY_FORMATTERS = new Map<string, Intl.NumberFormat>();
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const DATE_FORMATTERS = new Map<string, Intl.DateTimeFormat>();
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function localeFor(language: string): string {
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return language === "en" ? "en-GB" : "de-AT";
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}
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export function formatMoney(
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amount: number | string,
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currency: string,
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language: string,
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): string {
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const num = typeof amount === "string" ? Number(amount) : amount;
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const key = `${language}|${currency}`;
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let f = MONEY_FORMATTERS.get(key);
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if (!f) {
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f = new Intl.NumberFormat(localeFor(language), {
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style: "decimal",
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minimumFractionDigits: 2,
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maximumFractionDigits: 2,
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});
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MONEY_FORMATTERS.set(key, f);
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}
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return `${f.format(Number.isFinite(num) ? num : 0)} ${currency}`;
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}
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export function formatQuantity(qty: number, unit: string, language: string): string {
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let f = QTY_FORMATTERS.get(language);
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if (!f) {
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f = new Intl.NumberFormat(localeFor(language), {
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minimumFractionDigits: 2,
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maximumFractionDigits: 2,
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});
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QTY_FORMATTERS.set(language, f);
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}
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return `${f.format(qty)} ${unit}`;
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}
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export function formatDate(date: Date | string, language: string): string {
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const d = typeof date === "string" ? new Date(date) : date;
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let f = DATE_FORMATTERS.get(language);
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if (!f) {
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f = new Intl.DateTimeFormat(localeFor(language), {
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day: "2-digit",
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month: "2-digit",
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year: "numeric",
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});
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DATE_FORMATTERS.set(language, f);
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}
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return f.format(d);
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}
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/** Adds days to a date, returning a new Date. */
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export function addDays(date: Date, days: number): Date {
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const d = new Date(date);
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d.setDate(d.getDate() + days);
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return d;
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}
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/**
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* Formats a percentage. Tax rates from Shopify can be either 0.20 or 20 — we
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* accept both shapes via heuristics.
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*/
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export function formatTaxRate(rate: number, language: string): string {
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const pct = rate <= 1 ? rate * 100 : rate;
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const f = new Intl.NumberFormat(localeFor(language), {
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minimumFractionDigits: 0,
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maximumFractionDigits: 2,
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});
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return `${f.format(pct)}%`;
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}
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