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Address normalizers

Address normalizers

Address management in the Storefront requires bidirectional normalization.

Retrieving Addresses

To map BigCommerce Address into Unified Model, following normalizers are used:

  • normalizeAddress: This function is used to retrieve an address that has been saved in the checkout process.
  • normalizeCustomerAddress: When a customer retrieves one of the addresses they've saved, this function comes into play.

Saving Address

When a customer sets a shipping address during the checkout process, the SetCartAddress method is utilized. Here, a critical aspect arises in scenarios involving BigCommerce. To ensure the correct handling of new addresses in BigCommerce, a special unnormalization process is required.

  • unnormalizeAddress To accurately save a new address in BigCommerce, we need to unnormalize the address data. This means mapping the unified SfCreateAddressBody format used within the Storefront into the specific structure required by BigCommerce, known as CreateAddressParameters. This unnormalization step ensures that the address is correctly processed and stored in BigCommerce, maintaining data integrity between the Storefront and BigCommerce.



NameTypeDefault valueDescription
contextNormalizerContextContext which contains e.g. currency
addressShippingAddress or Order["billing_address"]BigCommerce Address


NameTypeDefault valueDescription
contextNormalizerContextContext which contains e.g. currency
addressUserAddressBigCommerce User Address


NameTypeDefault valueDescription
contextNormalizerContextContext which contains e.g. currency
addressSfCreateAddressBody or SfCustomerAddressUnified address body sent in the request from the Storefront


The SfCustomerAddress model represents a reusable address, which customer decided to store. It is used within customer address methods, as for example GetCustomerAddresses. If any of this models don't contain the information you need for your Storefront, you can extend its logic using the addCustomFields API. In the following example we extend the normalizeCustomerAddress with customerId field which is available on BigCommerce Address.

export const unifiedApiExtension = createUnifiedExtension({
  normalizers: {
    addCustomFields: [
        normalizeCustomerAddress: (context, address) => ({
          customerId: address.customer_id,
  config: {

Similarly if you want to change the mapping of unnormalizeAddress function you can customize it within addCustomFields API.

The SfAddress is used within the GetCart method. If you want to extend the SfAddress model, you should extend the normalizeCart function.


/* eslint-disable complexity */
import { maybe } from "@shared/utils";
import type { SfCreateAddressBody, SfCustomerAddress } from "@vue-storefront/unified-data-model";
import { defineNormalizer } from "../defineNormalizer";

export const normalizeAddress = defineNormalizer.normalizeAddress((context, address) => {
  return {
    address1: maybe(address?.street_1),
    address2: maybe(address?.street_2),
    city: maybe(address?.city),
    country: maybe(address?.country),
    firstName: maybe(address?.first_name),
    lastName: maybe(address?.last_name),
    phoneNumber: maybe(address?.phone?.toString()),
    postalCode: maybe(address?.zip?.toString()),
    state: maybe(address?.state),
    titleCode: null,

export const unnormalizeAddress = defineNormalizer.unnormalizeAddress(
  (context, address: SfCreateAddressBody | SfCustomerAddress) => {
    const {
    } = address;

    if (
      !firstName ||
      !lastName ||
      !postalCode ||
      !country ||
      !city ||
      !address1 ||
      !phoneNumber ||
    ) {
      throw new Error("Address is not a valid customer address. Some required fields are missing");

    return {
      first_name: firstName,
      last_name: lastName,
      address1: address1,
      address2: address2 || undefined,
      city: city,
      country_code: country,
      state_or_province: state,
      postal_code: postalCode,
      phone: phoneNumber || undefined,
      company: "",

export const normalizeCustomerAddress = defineNormalizer.normalizeCustomerAddress(
  (context, address) => {
    return {
      id: `${}`,
      firstName: address.first_name,
      lastName: address.last_name,
      address1: address.address1,
      address2: maybe(address.address2),
      country: address.country_code,
      state: address.state_or_province,
      postalCode: address.postal_code,
      titleCode: null,