Restricting template-engine to use minimal external dependencies

package.json

@@ -36,7 +36,6 @@
   },
   "dependencies": {
     "@phensley/timezone": "~1.2.17",
-    "lodash": "^4.17.21",
     "utf8": "^3.0.0"
   },
   "peerDependencies": {
@@ -48,7 +47,6 @@
     "@rollup/plugin-json": "^4.0.3",
     "@rollup/plugin-node-resolve": "^7.1.3",
     "@types/jest": "^29.5.10",
-    "@types/lodash": "^4.17.13",
     "@types/node": "^20.10.0",
     "@types/utf8": "^3.0.3",
     "beautify-benchmark": "^0.2.4",

src/plugins/formatters.commerce.ts

@@ -1,4 +1,3 @@
-import capitalize from 'lodash/capitalize';
 import { Context } from '../context';
 import { ProductType } from './enums';
 import { Node } from '../node';
@@ -245,12 +244,12 @@ export class ProductPriceFormatter extends Formatter {
     // This string needs to match the correct translation template in v6 products-2.0-en-US.json.
     let localizedStringKey = 'productPrice__' +
       `${hasMultiplePrices ? 'multiplePrices' : 'singlePrice'}__` +
-      `${billingPeriodValue === 1 ? '1' : 'n'}${capitalize(billingPeriodUnit)}ly__`;
+      `${billingPeriodValue === 1 ? '1' : 'n'}${stringutil.capitalizeFirst(billingPeriodUnit)}ly__`;
 
     if (durationValue == 0) {
       localizedStringKey += 'indefinite';
     } else {
-      localizedStringKey += `limited__${durationValue === 1 ? '1' : 'n'}${capitalize(durationUnit)}s`;
+      localizedStringKey += `limited__${durationValue === 1 ? '1' : 'n'}${stringutil.capitalizeFirst(durationUnit)}s`;
     }
 
     const localizedStringNode = ctx.resolve(['localizedStrings', localizedStringKey]);

src/plugins/util.commerce.ts

@@ -44,9 +44,7 @@ export const getAmountFromMoneyNode = (moneyNode?: Node) => {
 
 export const getCurrencyFromMoneyNode = (moneyNode: Node): CurrencyType => {
   const currencyNode = moneyNode.path(['currency']);
-  const currency = !currencyNode.isMissing() ?
-    currencyNode.asString().trim() :
-    DEFAULT_MONEY_NODE.path(['currency']).asString();
+  const currency = !currencyNode.isMissing() ? currencyNode.asString().trim() : DEFAULT_MONEY_NODE.path(['currency']).asString();
 
   return currency as CurrencyType;
 };
@@ -60,7 +58,7 @@ export const getMoneyString = (moneyNode: Node, args: string[], ctx: Context): s
   if (useCLDRMode(ctx)) {
     const amount = getAmountFromMoneyNode(moneyNode);
     const currencyCode = getCurrencyFromMoneyNode(moneyNode);
-  
+
     return ctx.cldr?.Numbers.formatCurrency(amount, currencyCode, currencyOptions(args)) ?? '';
   } else {
     const legacyAmount = getLegacyPriceFromMoneyNode(moneyNode);
@@ -78,15 +76,13 @@ export const getSubscriptionMoneyFromFirstPricingOptions = (pricingOptions: Node
 
   const node = pricingOptions.get(0);
 
-  return isTruthy(node.path(['onSale']))
-    ? node.path(['salePriceMoney'])
-    : node.path(['priceMoney']);
+  return isTruthy(node.path(['onSale'])) ? node.path(['salePriceMoney']) : node.path(['priceMoney']);
 };
 
 export const getPricingOptionsAmongLowestVariant = (item: Node): Node | null => {
   const productType = getProductType(item);
   const structuredContent = item.path(['structuredContent']);
-  
+
   switch (productType) {
     case ProductType.PHYSICAL:
     case ProductType.SERVICE:
@@ -96,9 +92,7 @@ export const getPricingOptionsAmongLowestVariant = (item: Node): Node | null =>
       }
 
       const first = variants.get(0);
-      const moneyNode = isTruthy(first.path(['onSale']))
-        ? first.path(['salePriceMoney'])
-        : first.path(['priceMoney']);
+      const moneyNode = isTruthy(first.path(['onSale'])) ? first.path(['salePriceMoney']) : first.path(['priceMoney']);
 
       let pricingOptions = first.path(['pricingOptions']);
       let price = getAmountFromMoneyNode(moneyNode);

src/plugins/util.string.ts

@@ -1,5 +1,10 @@
 import { replaceMappedChars } from '../util';
 
+/**
+ * Capitalize first letter of a string and lowercase the rest.
+ */
+export const capitalizeFirst = (str: string) => str.charAt(0).toUpperCase() + str.slice(1).toLowerCase();
+
 /**
  * Strip text between '<' and '>' from string.
  */