POS

The POS API provides the ability to retrieve POS user, device, and location data, while also interacting with the cart and closing the app.

Tip

It is recommended to use POS UI extensions for your development needs as they provide a faster, more robust, and easier to use solution for merchants using apps on POS. To learn more about the benefits and implementation details, refer to POS UI Extensions.

Anchor to cartCart

Retrieve cart data and perform actions.

Anchor to addAddress addAddress (address: ) => Promise<void>: Add a new address to a customer.
Anchor to addCartProperties addCartProperties (properties: Record<string, string>) => Promise<void>: Add properties for the cart.
Anchor to addCustomSale addCustomSale (customSale: ) => Promise<void>: Add custom sale for the cart.
Anchor to addLineItem addLineItem (variantId: number, quantity: number) => Promise<void>: Add a product to the cart.
Anchor to addLineItemProperties addLineItemProperties (uuid: string, properties: Record<string, string>) => Promise<void>: Add properties to a line item.
Anchor to applyCartCodeDiscount applyCartCodeDiscount (code: string) => Promise<void>: Apply a code discount to the whole cart.
Anchor to applyCartDiscount applyCartDiscount (type: , discountDescription: string, amount: string) => Promise<void>: Apply a percentage or fixed amount discount to the whole cart.
Anchor to clear clear () => Promise<void>: Clear all contents from the cart.
Anchor to fetch fetch () => Promise<>: Fetch the current cart.
Anchor to removeAllDiscounts removeAllDiscounts (disableAutomaticDiscounts: boolean) => Promise<void>: Clears all applied discounts from the cart and optionally disables automatic discounts.
Anchor to removeCartDiscount removeCartDiscount () => Promise<void>: Remove the discount applied to the whole cart.
Anchor to removeCartProperties removeCartProperties (keys: string[]) => Promise<void>: Remove properties from the cart.
Anchor to removeCustomer removeCustomer () => Promise<void>: Remove the current customer from the cart.
Anchor to removeLineItem removeLineItem (uuid: string) => Promise<void>: Remove a line item in the cart.
Anchor to removeLineItemDiscount removeLineItemDiscount (uuid: string) => Promise<void>: Remove a discount from a line item.
Anchor to removeLineItemProperties removeLineItemProperties (uuid: string, properties: string[]) => Promise<void>: Remove properties from a line item.
Anchor to setCustomer setCustomer (customer: ) => Promise<void>: Add a new or existing customer to the cart.
Anchor to setLineItemDiscount setLineItemDiscount (uuid: string, type: , discountDescription: string, amount: string) => Promise<void>: Apply a discount to a line item.
Anchor to subscribe subscribe (onSubscribe: ) =>: Subscribe the cart changes.
Anchor to updateAddress updateAddress (index: number, address: ) => Promise<void>: Update an address for a customer.
Anchor to updateLineItem updateLineItem (uuid: string, quantity: number) => Promise<void>: Make changes to a line item in the cart.

_PosCart

addAddress
Add a new address to a customer.
```
(address: Address) => Promise<void>
```

addCartProperties

Add properties for the cart.

(properties: Record<string, string>) => Promise<void>

addCustomSale
Add custom sale for the cart.
```
(customSale: CustomSale) => Promise<void>
```

addLineItem

Add a product to the cart.

(variantId: number, quantity: number) => Promise<void>

addLineItemProperties

Add properties to a line item.

(uuid: string, properties: Record<string, string>) => Promise<void>

applyCartCodeDiscount
Apply a code discount to the whole cart.
```
(code: string) => Promise<void>
```

applyCartDiscount

Apply a percentage or fixed amount discount to the whole cart.

(type: DiscountType, discountDescription: string, amount: string) => Promise<void>

clear
Clear all contents from the cart.
```
() => Promise<void>
```
fetch
Fetch the current cart.
```
() => Promise<Cart>
```
removeAllDiscounts
Clears all applied discounts from the cart and optionally disables automatic discounts.
```
(disableAutomaticDiscounts: boolean) => Promise<void>
```
removeCartDiscount
Remove the discount applied to the whole cart.
```
() => Promise<void>
```
removeCartProperties
Remove properties from the cart.
```
(keys: string[]) => Promise<void>
```
removeCustomer
Remove the current customer from the cart.
```
() => Promise<void>
```
removeLineItem
Remove a line item in the cart.
```
(uuid: string) => Promise<void>
```
removeLineItemDiscount
Remove a discount from a line item.
```
(uuid: string) => Promise<void>
```
removeLineItemProperties
Remove properties from a line item.
```
(uuid: string, properties: string[]) => Promise<void>
```
setCustomer
Add a new or existing customer to the cart.
```
(customer: Customer) => Promise<void>
```

setLineItemDiscount

Apply a discount to a line item.

(uuid: string, type: DiscountType, discountDescription: string, amount: string) => Promise<void>

Subscribe the cart changes.

(onSubscribe: CartSubscriber) => Unsubscribe

updateAddress

Update an address for a customer.

(index: number, address: Address) => Promise<void>

updateLineItem
Make changes to a line item in the cart.
```
(uuid: string, quantity: number) => Promise<void>
```

interface _PosCart {
  /**
   * Fetch the current cart.
   */
  fetch?(): Promise<Cart>;
  /**
   * Subscribe the cart changes.
   */
  subscribe?(onSubscribe: CartSubscriber): Unsubscribe;
  /**
   * Add a new or existing customer to the cart.
   */
  setCustomer?(customer: Customer): Promise<void>;
  /**
   * Remove the current customer from the cart.
   */
  removeCustomer?(): Promise<void>;
  /**
   * Add a new address to a customer.
   */
  addAddress?(address: Address): Promise<void>;
  /**
   * Update an address for a customer.
   */
  updateAddress?(index: number, address: Address): Promise<void>;
  /**
   * Apply a percentage or fixed amount discount to the whole cart.
   */
  applyCartDiscount?(
    type: DiscountType,
    discountDescription: string,
    amount: string,
  ): Promise<void>;
  /**
   * Apply a code discount to the whole cart.
   */
  applyCartCodeDiscount?(code: string): Promise<void>;
  /**
   * Remove the discount applied to the whole cart.
   */
  removeCartDiscount?(): Promise<void>;
  /**
   * Clears all applied discounts from the cart and optionally disables automatic discounts.
   */
  removeAllDiscounts?(disableAutomaticDiscounts: boolean): Promise<void>;
  /**
   * Add properties for the cart.
   */
  addCartProperties?(properties: Record<string, string>): Promise<void>;
  /**
   * Remove properties from the cart.
   */
  removeCartProperties?(keys: string[]): Promise<void>;
  /**
   * Add custom sale for the cart.
   */
  addCustomSale?(customSale: CustomSale): Promise<void>;
  /**
   * Clear all contents from the cart.
   */
  clear?(): Promise<void>;
  /**
   * Add a product to the cart.
   */
  addLineItem?(variantId: number, quantity: number): Promise<void>;
  /**
   * Make changes to a line item in the cart.
   */
  updateLineItem?(uuid: string, quantity: number): Promise<void>;
  /**
   * Remove a line item in the cart.
   */
  removeLineItem?(uuid: string): Promise<void>;
  /**
   * Apply a discount to a line item.
   */
  setLineItemDiscount?(
    uuid: string,
    type: DiscountType,
    discountDescription: string,
    amount: string,
  ): Promise<void>;
  /**
   * Remove a discount from a line item.
   */
  removeLineItemDiscount?(uuid: string): Promise<void>;
  /**
   * Add properties to a line item.
   */
  addLineItemProperties?(
    uuid: string,
    properties: Record<string, string>,
  ): Promise<void>;
  /**
   * Remove properties from a line item.
   */
  removeLineItemProperties?(uuid: string, properties: string[]): Promise<void>;
}

Address

address1
The customer's primary address.
```
string
```
address2
Any extra information associated with the address (Apartment #, Suite #, Unit #, etc.).
```
string
```
city
The name of the customer's city.
```
string
```
company
The company name associated with address.
```
string
```
country
The country of the address.
```
string
```
countryCode
The Country Code in ISO 3166-1 (alpha-2) format.
```
string
```
firstName
The first name of the customer.
```
string
```
lastName
The last name of the customer.
```
string
```
name
The name of the address.
```
string
```
phone
The phone number of the customer.
```
string
```
province
The province or state of the address.
```
string
```
provinceCode
The acronym of the province or state.
```
string
```
zip
The ZIP or postal code of the address.
```
string
```

interface Address {
  /**
   * The customer's primary address.
   */
  address1?: string;
  /**
   * Any extra information associated with the address (Apartment #, Suite #, Unit #, etc.).
   */
  address2?: string;
  /**
   * The name of the customer's city.
   */
  city?: string;
  /**
   * The company name associated with address.
   */
  company?: string;
  /**
   * The first name of the customer.
   */
  firstName?: string;
  /**
   * 	The last name of the customer.
   */
  lastName?: string;
  /**
   * The phone number of the customer.
   */
  phone?: string;
  /**
   * The province or state of the address.
   */
  province?: string;
  /**
   * The country of the address.
   */
  country?: string;
  /**
   * The ZIP or postal code of the address.
   */
  zip?: string;
  /**
   * The name of the address.
   */
  name?: string;
  /**
   * The acronym of the province or state.
   */
  provinceCode?: string;
  /**
   * The Country Code in ISO 3166-1 (alpha-2) format.
   */
  countryCode?: string;
}

CustomSale

price
Price of line item
```
number
```
quantity
Quantity of line item.
```
number
```
taxable
If line item charges tax.
```
boolean
```
title
Title of line item.
```
string
```

interface CustomSale {
  /**
   * Price of line item
   */
  price: number;
  /**
   * Quantity of line item.
   */
  quantity: number;
  /**
   * Title of line item.
   */
  title: string;
  /**
   * If line item charges tax.
   */
  taxable: boolean;
}

DiscountType

'Percentage' | 'FixedAmount'

Cart

cartDiscount
The current discount applied to the entire cart.
```
Discount
```
cartDiscounts
All current discounts applied to the entire cart and line items.
```
Discount[]
```
customer
The customer associated to the current cart.
```
Customer
```
grandTotal
The total cost of the current cart, after taxes and discounts have been applied. Value is based on the shop's existing currency settings.
```
string
```
lineItems
A list of lineItem objects.
```
LineItem[]
```
properties
A list of objects containing cart properties.
```
Record<string, string>
```
subTotal
The total cost of the current cart including discounts, but before taxes and shipping. Value is based on the shop's existing currency settings.
```
string
```
taxTotal
The sum of taxes for the current cart. Value is based on the shop's existing currency settings.
```
string
```

interface Cart {
  /**
   * 	The total cost of the current cart including discounts, but before taxes and shipping. Value is based on the shop's existing currency settings.
   */
  subTotal: string;
  /**
   * The sum of taxes for the current cart. Value is based on the shop's existing currency settings.
   */
  taxTotal: string;
  /**
   * The total cost of the current cart, after taxes and discounts have been applied. Value is based on the shop's existing currency settings.
   */
  grandTotal: string;
  /**
   * The current discount applied to the entire cart.
   */
  cartDiscount?: Discount;
  /**
   * All current discounts applied to the entire cart and line items.
   */
  cartDiscounts?: Discount[];
  /**
   * The customer associated to the current cart.
   */
  customer?: Customer;
  /**
   * A list of lineItem objects.
   */
  lineItems: LineItem[];
  /**
   * A list of objects containing cart properties.
   */
  properties: Record<string, string>;
}

Discount

amount
Amount of discount. Only for fixed or percentage discounts.
```
number
```
discountDescription
Description of discount.
```
string
```
type
Type of discount.
```
DiscountType
```

interface Discount {
  /**
   * Amount of discount. Only for fixed or percentage discounts.
   */
  amount: number;
  /**
   * Description of discount.
   */
  discountDescription?: string;
  /**
   * Type of discount.
   */
  type: DiscountType;
}

Customer

email
The email for a new customer.
```
string
```
firstName
The first name for new customer.
```
string
```
id
The ID of existing customer.
```
number
```
lastName
The last name for new customer.
```
string
```
note
The note for new customer.
```
string
```

interface Customer {
  /**
   * The ID of existing customer.
   */
  id: number;
  /**
   * The email for a new customer.
   */
  email?: string;
  /**
   * The first name for new customer.
   */
  firstName?: string;
  /**
   * The last name for new customer.
   */
  lastName?: string;
  /**
   * The note for new customer.
   */
  note?: string;
}

LineItem

discounts
Discount applied to line item.
```
Discount[]
```
isGiftCard
If the line item is a gift card.
```
boolean
```
price
Price of line item
```
number
```
productId
Product identifier for line item.
```
number
```
properties
Properties of the line item.
```
{ [key: string]: string; }
```
quantity
Quantity of line item.
```
number
```
sku
Stock keeping unit of the line item.
```
string
```
taxable
If line item charges tax.
```
boolean
```
title
Title of line item.
```
string
```
uuid
Unique id of line item
```
string
```
variantId
Variant identifier for line item.
```
number
```
vendor
Vendor of line item.
```
string
```

interface LineItem {
  /**
   * Unique id of line item
   */
  uuid: string;
  /**
   * Price of line item
   */
  price?: number;
  /**
   * Quantity of line item.
   */
  quantity: number;
  /**
   * Title of line item.
   */
  title?: string;
  /**
   * Variant identifier for line item.
   */
  variantId?: number;
  /**
   * Product identifier for line item.
   */
  productId?: number;
  /**
   * Discount applied to line item.
   */
  discounts: Discount[];
  /**
   * If line item charges tax.
   */
  taxable: boolean;
  /**
   * Stock keeping unit of the line item.
   */
  sku?: string;
  /**
   * Vendor of line item.
   */
  vendor?: string;
  /**
   * Properties of the line item.
   */
  properties: {[key: string]: string};
  /**
   * If the line item is a gift card.
   */
  isGiftCard: boolean;
}

CartSubscriber

Callback to execute when cart updates.

cart
```
Cart
```

void

void

(cart: Cart) => void

Unsubscribe

Callback to unsubscribe

void

void

() => void

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Anchor to Close
Close()

Close the app

Anchor to Close-returnsReturns

Promise<void>

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Anchor to Device
Device()

Retrieve device data

Anchor to Device-returnsReturns

Promise<>

PosDevice

Promise<Device>

Promise<Device>

() => Promise<Device>

Device

name
The name of the device.
```
string
```
serialNumber
The unique ID associated device ID and app ID..
```
string
```

interface Device {
  /**
   * The name of the device.
   */
  name: string;
  /**
   * The unique ID associated device ID and app ID..
   */
  serialNumber: string;
}

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Anchor to Location
Location()

Retrieve location data

Anchor to Location-returnsReturns

Promise<>

PosLocation

Promise<Location>

Promise<Location>

() => Promise<Location>

Location

active
The status of current location.
```
boolean
```
address1
The primary address of current location.
```
string
```
address2
Any extra information associated with the address (Apartment #, Suite #, Unit #, etc.).
```
string
```
city
The name of the city.
```
string
```
countryCode
The Country Code in ISO 3166-1 (alpha-2) format.
```
string
```
countryName
The country of the address.
```
string
```
id
The ID of current location.
```
number
```
locationType
The type of current location.
```
string
```
name
The name of current location.
```
string
```
phone
The phone number of the location.
```
string
```
province
TThe province or state of the address.
```
string
```
zip
The ZIP or postal code of the address.
```
string
```

interface Location {
  /**
   * The ID of current location.
   */
  id: number;
  /**
   * The status of current location.
   */
  active: boolean;
  /**
   * The name of current location.
   */
  name: string;
  /**
   * The type of current location.
   */
  locationType?: string;
  /**
   * The primary address of current location.
   */
  address1?: string;
  /**
   * Any extra information associated with the address (Apartment #, Suite #, Unit #, etc.).
   */
  address2?: string;
  /**
   * The ZIP or postal code of the address.
   */
  zip?: string;
  /**
   * The name of the city.
   */
  city?: string;
  /**
   * TThe province or state of the address.
   */
  province?: string;
  /**
   * The Country Code in ISO 3166-1 (alpha-2) format.
   */
  countryCode?: string;
  /**
   * The country of the address.
   */
  countryName?: string;
  /**
   * 	The phone number of the location.
   */
  phone?: string;
}

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Anchor to User
User()

Refer to the user API to learn more about retrieving POS user data.

Anchor to User-returnsReturns

Promise<>

POSUserAPI

Promise<POSUser>

Promise<POSUser>

() => Promise<POSUser>

POSUser

accountAccess
The account access level of the logged-in user
```
string
```
accountType
The user's account type.
```
string
```
email
The user's email address.
```
string
```
firstName
The user's first name.
```
string
```
id
The ID of the user's staff.
```
number
```
lastName
The user's last name.
```
string
```

export interface POSUser {
  /**
   * The ID of the user's staff.
   */
  id?: number;
  /**
   * The user's first name.
   */
  firstName?: string;
  /**
   * The user's last name.
   */
  lastName?: string;
  /**
   * The user's email address.
   */
  email?: string;
  /**
   *   The account access level of the logged-in user
   */
  accountAccess?: string;
  /**
   * The user's account type.
   */
  accountType?: string;
}

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Fetch the POS cart

await shopify.pos.cart.fetch();

Anchor to examplesExamples

Examples for retrieving and interacting with data on the POS

Anchor to example-cartCart

Anchor to example-fetch-the-cartFetch the cart

Anchor to example-clear-the-cartClear the cart

Anchor to example-line-itemsLine Items

Anchor to example-custom-saleCustom Sale

Anchor to example-customersCustomers

Anchor to example-addressesAddresses

Anchor to example-cart-discountsCart Discounts

Anchor to example-line-item-discountsLine Item Discounts

Anchor to example-cart-propertiesCart Properties

Anchor to example-line-item-propertiesLine Item Properties

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Fetch the cart

await shopify.pos.cart.fetch();

examples

Fetch the cart
```
await shopify.pos.cart.fetch();
```

Subscribe to cart updates

await shopify.pos.cart.subscribe((cart) => {
  console.log(cart);
});

Clear the cart
```
await shopify.pos.cart.clear();
```

Line Items

Add line item

await shopify.pos.cart.addLineItem(40202439393345, 10);

Update line item

const cart = await shopify.pos.cart.fetch();
const lineItemUuid = cart.lineItems[0].uuid;
await shopify.pos.cart.updateLineItem(lineItemUuid, 4);

Remove line item

const cart = await shopify.pos.cart.fetch();
const lineItemUuid = cart.lineItems[0].uuid;
await shopify.pos.cart.removeLineItem(lineItemUuid);

Custom Sale

Add custom sale

await shopify.pos.cart.addCustomSale({
  price: 10,
  quantity: 1,
  title: 'Custom sale',
  taxable: true,
});

Customers

Add a customer by email

await shopify.pos.cart.setCustomer({
  email: 'foo@shopify.com',
  firstName: 'Jane',
  lastName: 'Doe',
  note: 'Customer note',
});

Add a customer by id

await shopify.pos.cart.setCustomer({
  id: 5945486803009,
  note: 'Customer note',
});

Remove customer

await shopify.pos.cart.removeCustomer();

Add a customer address

await shopify.pos.cart.addAddress({
  address1: '123 Cherry St.',
  address2: 'Apt. 5',
  city: 'Toronto',
  company: 'Shopify',
  firstName: 'Foo',
  lastName: 'Bar',
  phone: '(613) 555-5555',
  province: 'Ontario',
  country: 'Canada',
  zip: 'M5V0G4',
  name: 'Shopify',
  provinceCode: 'M5V0G4',
  countryCode: '1',
});

Update customer address

await shopify.pos.cart.updateAddress(0, {
  address1: '555 Apple St.',
  address2: 'Unit. 10',
  city: 'Vancouver',
  company: 'Shopify',
  firstName: 'Jane',
  lastName: 'Doe',
  phone: '(403) 555-5555',
  province: 'British Columbia',
  country: 'Canada',
  zip: 'M5V0G4',
  name: 'Shopify',
  provinceCode: 'M5V0G4',
  countryCode: '2',
});

Addresses

Add a customer address

await shopify.pos.cart.addAddress({
  address1: '123 Cherry St.',
  address2: 'Apt. 5',
  city: 'Toronto',
  company: 'Shopify',
  firstName: 'Foo',
  lastName: 'Bar',
  phone: '(613) 555-5555',
  province: 'Ontario',
  country: 'Canada',
  zip: 'M5V0G4',
  name: 'Shopify',
  provinceCode: 'M5V0G4',
  countryCode: '1',
});

Update customer address

await shopify.pos.cart.updateAddress(0, {
  address1: '555 Apple St.',
  address2: 'Unit. 10',
  city: 'Vancouver',
  company: 'Shopify',
  firstName: 'Jane',
  lastName: 'Doe',
  phone: '(403) 555-5555',
  province: 'British Columbia',
  country: 'Canada',
  zip: 'M5V0G4',
  name: 'Shopify',
  provinceCode: 'M5V0G4',
  countryCode: '2',
});

Cart Discounts

Add cart discount

await shopify.pos.cart.applyCartDiscount('FixedAmount', 'Holiday sale', '10');

Add dicount code

await shopify.pos.cart.applyCartCodeDiscount('HOLIDAY SALE');

Remove cart discount

await shopify.pos.cart.removeCartDiscount();

Remove all discounts with automatic discounts disabled

await shopify.pos.cart.removeAllDiscounts(true);

Line Item Discounts

Add line item discount

const cart = await shopify.pos.cart.fetch();
const lineItemUuid = cart.lineItems[0].uuid;
await shopify.pos.cart.setLineItemDiscount(
  lineItemUuid,
  'Percentage',
  'Holiday sale',
  '0.5',
);

Remove line item discount

const cart = await shopify.pos.cart.fetch();
const lineItemUuid = cart.lineItems[0].uuid;
await shopify.pos.cart.removeLineItemDiscount(lineItemUuid);

Cart Properties

Add cart properties

await shopify.pos.cart.addCartProperties({
  referral: 'Shopify',
  employee: '472',
});

Remove cart properties

await shopify.pos.cart.removeCartProperties(['referral', 'employee']);

Add line item properties

const cart = await shopify.pos.cart.fetch();
const lineItemUuid = cart.lineItems[0].uuid;
await shopify.pos.cart.addLineItemProperties(lineItemUuid, {
  referral: 'Shopify',
  employee: '472',
});

Remove line item properties

const cart = await shopify.pos.cart.fetch();
const lineItemUuid = cart.lineItems[0].uuid;
await shopify.pos.cart.removeLineItemProperties(lineItemUuid, [
  'referral',
  'employee',
]);

Line Item Properties

Add line item properties

const cart = await shopify.pos.cart.fetch();
const lineItemUuid = cart.lineItems[0].uuid;
await shopify.pos.cart.addLineItemProperties(lineItemUuid, {
  referral: 'Shopify',
  employee: '472',
});

Remove line item properties

const cart = await shopify.pos.cart.fetch();
const lineItemUuid = cart.lineItems[0].uuid;
await shopify.pos.cart.removeLineItemProperties(lineItemUuid, [
  'referral',
  'employee',
]);

Anchor to example-closeClose

Anchor to example-dismiss-the-screenDismiss the screen

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Dismiss the screen

await shopify.pos.close();

Anchor to example-deviceDevice

Anchor to example-retrieve-pos-device-dataRetrieve POS device data

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Retrieve POS device data

await shopify.pos.device();

Anchor to example-locationLocation

Anchor to example-retrieve-pos-location-dataRetrieve POS location data

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Retrieve POS location data

await shopify.pos.location();

POS

Anchor to cartCart

_PosCart

Address

CustomSale

DiscountType

Cart

Discount

Customer

LineItem

CartSubscriber

Unsubscribe

Anchor to CloseClose()

Anchor to Close-returnsReturns

PosClose

Anchor to DeviceDevice()

Anchor to Device-returnsReturns

PosDevice

Device

Anchor to LocationLocation()

Anchor to Location-returnsReturns

PosLocation

Location

Anchor to UserUser()

Anchor to User-returnsReturns

POSUserAPI

POSUser

examples

Fetch the POS cart

Anchor to examplesExamples

Anchor to example-cartCart

examples

Fetch the cart

Subscribe to cart updates

Clear the cart

Line Items

Add line item

Update line item

Remove line item

Custom Sale

Add custom sale

Customers

Add a customer by email

Add a customer by id

Remove customer

Add a customer address

Update customer address

Addresses

Add a customer address

Update customer address

Cart Discounts

Add cart discount

Add dicount code

Remove cart discount

Remove all discounts with automatic discounts disabled

Line Item Discounts

Add line item discount

Remove line item discount

Cart Properties

Add cart properties

Remove cart properties

Add line item properties

Remove line item properties

Line Item Properties

Add line item properties

Remove line item properties

Anchor to example-closeClose

examples

Dismiss the screen

Anchor to example-deviceDevice

examples

Retrieve POS device data

Anchor to example-locationLocation

examples

Retrieve POS location data

Anchor to Close
Close()

Anchor to Device
Device()

Anchor to Location
Location()

Anchor to User
User()