Add swell provider folder

framework/swell/customer/get-customer-id.ts

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+import { getConfig, ShopifyConfig } from '../api'
+import getCustomerIdQuery from '../utils/queries/get-customer-id-query'
+import Cookies from 'js-cookie'
+
+async function getCustomerId({
+  customerToken: customerAccesToken,
+  config,
+}: {
+  customerToken: string
+  config?: ShopifyConfig
+}): Promise<number | undefined> {
+  config = getConfig(config)
+
+  const { data } = await config.fetch(getCustomerIdQuery, {
+    variables: {
+      customerAccesToken:
+        customerAccesToken || Cookies.get(config.customerCookie),
+    },
+  })
+
+  return data.customer?.id
+}
+
+export default getCustomerId

framework/swell/customer/index.ts

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+export { default as useCustomer } from './use-customer'

framework/swell/customer/use-customer.tsx

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+import useCustomer, { UseCustomer } from '@commerce/customer/use-customer'
+import { Customer } from '@commerce/types'
+import { SWRHook } from '@commerce/utils/types'
+import { getCustomerQuery, getCustomerToken } from '../utils'
+
+export default useCustomer as UseCustomer<typeof handler>
+
+export const handler: SWRHook<Customer | null> = {
+  fetchOptions: {
+    query: getCustomerQuery,
+  },
+  async fetcher({ options, fetch }) {
+    const data = await fetch<any | null>({
+      ...options,
+      variables: { customerAccessToken: getCustomerToken() },
+    })
+    return data.customer ?? null
+  },
+  useHook: ({ useData }) => (input) => {
+    return useData({
+      swrOptions: {
+        revalidateOnFocus: false,
+        ...input?.swrOptions,
+      },
+    })
+  },
+}