feat(method): new 'minQuantity' method for product stock check

src/index.js

@@ -15,6 +15,7 @@ import formatMoney from './methods/format-money'
 import findByProperty from './methods/find-by-property'
 import findBySlug from './methods/find-by-slug'
 import filterByParentSlug from './methods/filter-by-parent-slug'
+import minQuantity from './methods/min-quantity'
 
 const self = name + '@' + version
 
@@ -45,7 +46,8 @@ export {
   formatMoney,
   findByProperty,
   findBySlug,
-  filterByParentSlug
+  filterByParentSlug,
+  minQuantity
 }
 
 /**

src/methods/min-quantity.js

@@ -0,0 +1,29 @@
+const minQuantity = product => (product && product.min_quantity) || 1
+
+/**
+ * @method
+ * @memberof ecomUtils
+ * @name minQuantity
+ * @description Returns the minimum quantity to add to cart.
+ * @param {object} product - Body object (product or variation)
+ * @returns {number}
+ *
+ * @example
+ * // With min quantity specified
+ * // Full object ref.: https://developers.e-com.plus/docs/api/#/store/products/
+ * const product = { sku: 'TEST', name: 'Test', price: 10, min_quantity: 10 }
+ * ecomUtils.minQuantity(product)
+ * // => 10
+ * product.min_quantity = 0
+ * ecomUtils.minQuantity(product)
+ * // => 0
+ *
+ * @example
+ * // 1 by default when min quantity is undefined
+ * ecomUtils.minQuantity({ sku: 'TEST', name: 'Test' })
+ * // => 1
+ * ecomUtils.minQuantity({})
+ * // => 1
+ */
+
+export default minQuantity