migrate to typescript

src/lib/currency.ts

@@ -0,0 +1,80 @@
+import { CurrencyDisplaySymbol, CurrencyDisplayLocation, type CurrencyPrependAndAppendText, CurrencyDisplayType } from '@/core/currency.ts';
+import { ALL_CURRENCIES, DEFAULT_CURRENCY_SYMBOL } from '@/consts/currency.ts';
+
+import { isString, isNumber } from './common.ts';
+
+export function getCurrencyFraction(currencyCode: string): number | undefined {
+    const currencyInfo = ALL_CURRENCIES[currencyCode];
+    return currencyInfo?.fraction;
+}
+
+export function appendCurrencySymbol(value: unknown, currencyDisplayType: CurrencyDisplayType, currencyCode: string, currencyUnit: string, currencyName: string, isPlural: boolean): string | null {
+    if (isNumber(value)) {
+        value = (value as number).toString();
+    }
+
+    if (!isString(value)) {
+        return null;
+    }
+
+    const symbol = getAmountPrependAndAppendCurrencySymbol(currencyDisplayType, currencyCode, currencyUnit, currencyName, isPlural);
+
+    if (!symbol) {
+        return value as string;
+    }
+
+    const separator = currencyDisplayType.separator || '';
+    let ret = value as string;
+
+    if (symbol.prependText) {
+        ret = symbol.prependText + separator + ret;
+    }
+
+    if (symbol.appendText) {
+        ret = ret + separator + symbol.appendText;
+    }
+
+    return ret;
+}
+
+export function getAmountPrependAndAppendCurrencySymbol(currencyDisplayType: CurrencyDisplayType, currencyCode: string, currencyUnit: string, currencyName: string, isPlural: boolean): CurrencyPrependAndAppendText | null {
+    if (!currencyDisplayType) {
+        return null;
+    }
+
+    let symbol = '';
+
+    if (currencyDisplayType.symbol === CurrencyDisplaySymbol.Symbol) {
+        const currencyInfo = ALL_CURRENCIES[currencyCode];
+
+        if (currencyInfo && currencyInfo.symbol && currencyInfo.symbol.normal) {
+            symbol = currencyInfo.symbol.normal;
+
+            if (isPlural && currencyInfo.symbol.plural) {
+                symbol = currencyInfo.symbol.plural;
+            }
+        }
+
+        if (!symbol) {
+            symbol = DEFAULT_CURRENCY_SYMBOL;
+        }
+    } else if (currencyDisplayType.symbol === CurrencyDisplaySymbol.Code) {
+        symbol = currencyCode;
+    } else if (currencyDisplayType.symbol === CurrencyDisplaySymbol.Unit) {
+        symbol = currencyUnit;
+    } else if (currencyDisplayType.symbol === CurrencyDisplaySymbol.Name) {
+        symbol = currencyName;
+    }
+
+    if (currencyDisplayType.location === CurrencyDisplayLocation.BeforeAmount) {
+        return {
+            prependText: symbol
+        };
+    } else if (currencyDisplayType.location === CurrencyDisplayLocation.AfterAmount) {
+        return {
+            appendText: symbol
+        };
+    } else {
+        return null;
+    }
+}