Remove callback in intall-utils.js (#627)

Author: harsha509

lib/install-utils.js

@@ -98,9 +98,9 @@ function checksum(filepath, cb) {
     .once('error', cb);
 }
 
-function isUpToDate(url, requestOpts, hash, cb) {
+async function isUpToDate(url, requestOpts, hash) {
   if (!hash) {
-    return cb(false);
+    return false;
   }
 
   /**
@@ -109,29 +109,25 @@ function isUpToDate(url, requestOpts, hash, cb) {
    * it. To prevent this we always assume it is the latest
    */
   if (hash && url.includes('edgedriver')) {
-    return cb(true);
+    return true;
   }
 
   const options = merge({}, requestOpts, {
     headers: {
       'If-None-Match': `"${hash}"`,
     },
   });
-  got(url, options)
-    .then((res) => {
-      if (res.statusCode === 304) {
-        return cb(true);
-      }
-      cb(false);
-    })
-    .catch((err) => {
-      logError(
-        `Could not request headers from ${url}: ` +
-          (err.response ? err.response.statusCode : err.message) +
-          ', continue without checking for latest version.'
-      );
-      return cb(true);
-    });
+  try {
+    const response = await got(url, options);
+    return response.statusCode === 304;
+  } catch (err) {
+    logError(
+      `Could not request headers from ${url}: ` +
+        (err.response ? err.response.statusCode : err.message) +
+        ', continue without checking for latest version.'
+    );
+    return true;
+  }
 }
 
 function getTempFileName(suffix) {

lib/install.js

@@ -116,7 +116,7 @@ async function install(_opts) {
 
   async function onlyInstallMissingFiles(opts) {
     const hash = await new Promise((resolve) => checksum(opts.to, resolve));
-    const isLatest = await new Promise((resolve) => isUpToDate(opts.from, requestOpts, hash, resolve));
+    const isLatest = await isUpToDate(opts.from, requestOpts, hash);
 
     // File already exists. Prevent download/installation.
     if (isLatest) {