Fix smart quotes in checkout.ts type literals

Replace Unicode curly quotes (U+2018/U+2019) with straight ASCII quotes
on all type literal lines, which caused ESLint parse errors.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

Author: rennyG

packages/ui-extensions/src/surfaces/checkout/api/checkout/checkout.ts

@@ -412,13 +412,13 @@ export interface GiftCardChangeResultSuccess {
  */
 export interface GiftCardChangeResultError {
   /**
-   * Indicates that the gift card change couldn’t be applied. Check the `message` property for details.
+   * Indicates that the gift card change couldn't be applied. Check the `message` property for details.
    */
-  type: ‘error’;
+  type: 'error';
 
   /**
    * A message that explains the error. This message is useful for debugging.
-   * It isn’t localized and shouldn’t be displayed to the buyer.
+   * It isn't localized and shouldn't be displayed to the buyer.
    */
   message: string;
 }
@@ -428,7 +428,7 @@ export interface MetafieldRemoveChange {
   /**
    * The type of the `MetafieldRemoveChange` API.
    */
-  type: ‘removeMetafield’;
+  type: 'removeMetafield';
 
   /**
    * The name of the metafield to remove.
@@ -446,7 +446,7 @@ export interface MetafieldRemoveCartChange {
   /**
    * Identifies this as a cart metafield removal. Set this when creating a change to delete an existing metafield by key and namespace.
    */
-  type: ‘removeCartMetafield’;
+  type: 'removeCartMetafield';
 
   /**
    * The name of the metafield to remove.
@@ -467,7 +467,7 @@ export interface MetafieldUpdateChange {
   /**
    * The type of the `MetafieldUpdateChange` API.
    */
-  type: ‘updateMetafield’;
+  type: 'updateMetafield';
 
   /** The name of the metafield to update. */
   key: string;
@@ -479,19 +479,19 @@ export interface MetafieldUpdateChange {
   value: string | number;
 
   /**
-   * The metafield’s information type.
+   * The metafield's information type.
    */
-  valueType: ‘integer’ | ‘string’ | ‘json_string’;
+  valueType: 'integer' | 'string' | 'json_string';
 }
 
 /**
- * Creates or updates a cart [metafield](https://shopify.dev/docs/apps/build/custom-data/metafields). Pass this to `applyMetafieldChange()` to set a metafield value. If a metafield with the provided key and namespace doesn’t already exist, then it gets created.
+ * Creates or updates a cart [metafield](https://shopify.dev/docs/apps/build/custom-data/metafields). Pass this to `applyMetafieldChange()` to set a metafield value. If a metafield with the provided key and namespace doesn't already exist, then it gets created.
  */
 export interface MetafieldUpdateCartChange {
   /**
    * Identifies this as a cart metafield creation or update. Set this when creating a change to set a metafield value.
    */
-  type: ‘updateCartMetafield’;
+  type: 'updateCartMetafield';
 
   /**
    * The metafield data to set on the cart. If a metafield with this key and namespace already exists, then its value is replaced.
@@ -507,7 +507,7 @@ export interface MetafieldUpdateCartChange {
     value: string;
 
     /**
-     * The metafield’s information type.
+     * The metafield's information type.
      * See the [metafield types documentation](https://shopify.dev/docs/apps/build/custom-data/metafields/list-of-data-types) for a list of supported types.
      */
     type: string;
@@ -517,10 +517,10 @@ export interface MetafieldUpdateCartChange {
 /**
  * The input for `applyMetafieldChange()`. Use the `type` property to specify the operation.
  *
- * - `MetafieldRemoveCartChange` (`type: ‘removeCartMetafield’`): Removes an existing cart [metafield](https://shopify.dev/docs/apps/build/custom-data/metafields).
- * - `MetafieldUpdateCartChange` (`type: ‘updateCartMetafield’`): Creates or updates a cart metafield.
- * - `MetafieldRemoveChange` (`type: ‘removeMetafield’`) - Removes an existing metafield.
- * - `MetafieldUpdateChange` (`type: ‘updateMetafield’`) - Creates or updates a metafield.
+ * - `MetafieldRemoveCartChange` (`type: 'removeCartMetafield'`): Removes an existing cart [metafield](https://shopify.dev/docs/apps/build/custom-data/metafields).
+ * - `MetafieldUpdateCartChange` (`type: 'updateCartMetafield'`): Creates or updates a cart metafield.
+ * - `MetafieldRemoveChange` (`type: 'removeMetafield'`) - Removes an existing metafield.
+ * - `MetafieldUpdateChange` (`type: 'updateMetafield'`) - Creates or updates a metafield.
  */
 export type MetafieldChange =
   | MetafieldRemoveChange
@@ -529,27 +529,27 @@ export type MetafieldChange =
   | MetafieldUpdateCartChange;
 
 /**
- * The result of a successful metafield change. The `type` property is `’success’`.
+ * The result of a successful metafield change. The `type` property is `'success'`.
  */
 export interface MetafieldChangeResultSuccess {
   /**
    * Indicates that the metafield change was applied successfully.
    */
-  type: ‘success’;
+  type: 'success';
 }
 
 /**
  * The result of a failed metafield change. Check the `message` property for details about what went wrong.
  */
 export interface MetafieldChangeResultError {
   /**
-   * Indicates that the metafield change couldn’t be applied. Check the `message` property for details.
+   * Indicates that the metafield change couldn't be applied. Check the `message` property for details.
    */
-  type: ‘error’;
+  type: 'error';
 
   /**
    * A message that explains the error. This message is useful for debugging.
-   * It isn’t localized and shouldn’t be displayed to the buyer.
+   * It isn't localized and shouldn't be displayed to the buyer.
    */
   message: string;
 }
@@ -562,35 +562,35 @@ export type MetafieldChangeResult =
   | MetafieldChangeResultError;
 
 /**
- * Updates the buyer’s shipping address on the checkout. Pass this to `applyShippingAddressChange()` to modify specific address fields without replacing the entire address.
+ * Updates the buyer's shipping address on the checkout. Pass this to `applyShippingAddressChange()` to modify specific address fields without replacing the entire address.
  */
 export interface ShippingAddressUpdateChange {
   /**
    * Identifies this as a shipping address update. This is the only supported change type for `applyShippingAddressChange()`.
    */
-  type: ‘updateShippingAddress’;
+  type: 'updateShippingAddress';
 
   /**
    * Fields to update in the shipping address. You only need to provide
-   * values for the fields you want to update. Any fields you don’t list
+   * values for the fields you want to update. Any fields you don't list
    * keep their current values.
    */
   address: Partial<ShippingAddress>;
 }
 
 /**
- * The input for `applyShippingAddressChange()`. Currently only supports `ShippingAddressUpdateChange` (with `type: ‘updateShippingAddress’`).
+ * The input for `applyShippingAddressChange()`. Currently only supports `ShippingAddressUpdateChange` (with `type: 'updateShippingAddress'`).
  */
 export type ShippingAddressChange = ShippingAddressUpdateChange;
 
 /**
- * The result of a successful shipping address change. The `type` property is `’success’` and `errors` is `null`.
+ * The result of a successful shipping address change. The `type` property is `'success'` and `errors` is `null`.
  */
 export interface ShippingAddressChangeResultSuccess {
   /**
    * Indicates that the shipping address change was applied successfully.
    */
-  type: ‘success’;
+  type: 'success';
 
   /**
    * Always `null` for a successful address change. Present so that you can
@@ -604,13 +604,13 @@ export interface ShippingAddressChangeResultSuccess {
  */
 export interface ShippingAddressChangeFieldError {
   /**
-   * The `MailingAddress` field that caused the error, such as `’countryCode’` or `’zip’`. The value is `undefined` if the error isn’t specific to a single field.
+   * The `MailingAddress` field that caused the error, such as `'countryCode'` or `'zip'`. The value is `undefined` if the error isn't specific to a single field.
    */
   field?: keyof MailingAddress;
 
   /**
    * A message that explains the error. This message is useful for debugging.
-   * It isn’t localized and shouldn’t be displayed to the buyer.
+   * It isn't localized and shouldn't be displayed to the buyer.
    */
   message: string;
 }
@@ -620,9 +620,9 @@ export interface ShippingAddressChangeFieldError {
  */
 export interface ShippingAddressChangeResultError {
   /**
-   * Indicates that the shipping address change couldn’t be applied. Check the `errors` array for field-level details.
+   * Indicates that the shipping address change couldn't be applied. Check the `errors` array for field-level details.
    */
-  type: ‘error’;
+  type: 'error';
 
   /**
    * The list of field-level errors that prevented the address change. Each entry identifies which address field failed and why.
@@ -687,7 +687,7 @@ export interface CheckoutApi {
   applyMetafieldChange(change: MetafieldChange): Promise<MetafieldChangeResult>;
 
   /**
-   * Sets or removes the buyer’s note on the checkout. On success, the
+   * Sets or removes the buyer's note on the checkout. On success, the
    * [`note`](https://shopify.dev/docs/api/checkout-ui-extensions/{API_VERSION}/apis/note#standardapi-propertydetail-note)
    * property updates to reflect the change.
    *