use rest client for getting available versions

lib/installer.js

@@ -23,7 +23,7 @@ const os = __importStar(require("os"));
 const path = __importStar(require("path"));
 const util = __importStar(require("util"));
 const semver = __importStar(require("semver"));
-const httpm = __importStar(require("typed-rest-client/HttpClient"));
+const restm = __importStar(require("typed-rest-client/RestClient"));
 let osPlat = os.platform();
 let osArch = os.arch();
 if (!tempDirectory) {
@@ -155,24 +155,22 @@ function getLatestVersion(version) {
         // clean .x syntax: 1.10.x -> 1.10
         const trimmedVersion = version.slice(0, version.length - 2);
         const versions = yield getPossibleVersions(trimmedVersion);
+        core.debug(`evaluating ${versions.length} versions`);
         if (version.length === 0) {
+            core.debug('match not found');
             return trimmedVersion;
         }
+        core.debug(`matched: ${versions[0]}`);
         return versions[0];
     });
 }
-function unique(value, index, self) {
-    return self.indexOf(value) === index;
-}
 function getAvailableVersions() {
     return __awaiter(this, void 0, void 0, function* () {
-        let http = new httpm.HttpClient('setup-go');
+        let rest = new restm.RestClient('setup-go');
-        let contents = yield (yield http.get('https://api.github.com/repos/golang/go/git/refs/tags')).readBody();
+        let tags = (yield rest.get('https://api.github.com/repos/golang/go/git/refs/tags')).result || [];
-        const matches = contents.match(/go\d+\.[\w\.]+/g) || [];
+        return tags
-        const versions = matches
+            .filter(tag => tag.ref.match(/go\d+\.[\w\.]+/g))
-            .map(version => version.replace('go', ''))
+            .map(tag => tag.ref.replace('refs/tags/go', ''));
-            .filter(unique);
-        return versions;
     });
 }
 function getPossibleVersions(version) {

src/installer.ts

@@ -6,7 +6,7 @@ import * as os from 'os';
 import * as path from 'path';
 import * as util from 'util';
 import * as semver from 'semver';
-import * as httpm from 'typed-rest-client/HttpClient';
+import * as restm from 'typed-rest-client/RestClient';
 
 let osPlat: string = os.platform();
 let osArch: string = os.arch();
@@ -155,29 +155,32 @@ async function getLatestVersion(version: string): Promise<string> {
 
   const versions = await getPossibleVersions(trimmedVersion);
 
+  core.debug(`evaluating ${versions.length} versions`);
+
   if (version.length === 0) {
+    core.debug('match not found');
     return trimmedVersion;
   }
 
+  core.debug(`matched: ${versions[0]}`);
+
   return versions[0];
 }
 
-function unique(value: string, index: number, self: string[]) {
+interface IGoRef {
-  return self.indexOf(value) === index;
+  ref: string;
 }
 
 async function getAvailableVersions(): Promise<string[]> {
-  let http: httpm.HttpClient = new httpm.HttpClient('setup-go');
+  let rest: restm.RestClient = new restm.RestClient('setup-go');
-  let contents = await (await http.get(
+  let tags: IGoRef[] =
+    (await rest.get<IGoRef[]>(
       'https://api.github.com/repos/golang/go/git/refs/tags'
-  )).readBody();
+    )).result || [];
-
-  const matches = contents.match(/go\d+\.[\w\.]+/g) || [];
-  const versions = matches
-    .map(version => version.replace('go', ''))
-    .filter(unique);
 
-  return versions;
+  return tags
+    .filter(tag => tag.ref.match(/go\d+\.[\w\.]+/g))
+    .map(tag => tag.ref.replace('refs/tags/go', ''));
 }
 
 async function getPossibleVersions(version: string): Promise<string[]> {