Replace CancelToken to AbortSignal (#19352)

app/javascript/mastodon/api.js

@@ -1,20 +1,31 @@
+// @ts-check
+
 import axios from 'axios';
 import LinkHeader from 'http-link-header';
 import ready from './ready';
 
+/**
+ * @param {import('axios').AxiosResponse} response
+ * @returns {LinkHeader}
+ */
 export const getLinks = response => {
   const value = response.headers.link;
 
   if (!value) {
-    return { refs: [] };
+    return new LinkHeader();
   }
 
   return LinkHeader.parse(value);
 };
 
+/** @type {import('axios').RawAxiosRequestHeaders} */
 const csrfHeader = {};
 
+/**
+ * @returns {void}
+ */
 const setCSRFHeader = () => {
+  /** @type {HTMLMetaElement | null} */
   const csrfToken = document.querySelector('meta[name=csrf-token]');
 
   if (csrfToken) {
@@ -24,6 +35,10 @@ const setCSRFHeader = () => {
 
 ready(setCSRFHeader);
 
+/**
+ * @param {() => import('immutable').Map} getState
+ * @returns {import('axios').RawAxiosRequestHeaders}
+ */
 const authorizationHeaderFromState = getState => {
   const accessToken = getState && getState().getIn(['meta', 'access_token'], '');
 
@@ -36,17 +51,25 @@ const authorizationHeaderFromState = getState => {
   };
 };
 
-export default getState => axios.create({
-  headers: {
-    ...csrfHeader,
-    ...authorizationHeaderFromState(getState),
-  },
+/**
+ * @param {() => import('immutable').Map} getState
+ * @returns {import('axios').AxiosInstance}
+ */
+export default function api(getState) {
+  return axios.create({
+    headers: {
+      ...csrfHeader,
+      ...authorizationHeaderFromState(getState),
+    },
 
-  transformResponse: [function (data) {
-    try {
-      return JSON.parse(data);
-    } catch(Exception) {
-      return data;
-    }
-  }],
-});
+    transformResponse: [
+      function (data) {
+        try {
+          return JSON.parse(data);
+        } catch {
+          return data;
+        }
+      },
+    ],
+  });
+}