Address eslint errors and warnings.

src/cleanup.ts

@@ -46,7 +46,6 @@ async function saveCache(): Promise<void> {
  * @returns Promise that will ignore error reported by the given promise
  */
 async function ignoreErrors(promise: Promise<void>): Promise<unknown> {
-  /* eslint-disable github/no-then */
   return new Promise(resolve => {
     promise
       .catch(error => {

src/graalvm.ts

@@ -89,7 +89,7 @@ export async function findLatestEABuildDownloadUrl(
     response = await getContents(ORACLE_GRAALVM_REPO_EA_BUILDS, filePath)
   } catch (error) {
     throw new Error(
-      `Unable to resolve download URL for '${javaEaVersion}'. Please make sure the java-version is set correctly. ${c.ERROR_HINT}`
+      `Unable to resolve download URL for '${javaEaVersion}' (reason: ${error}). Please make sure the java-version is set correctly. ${c.ERROR_HINT}`
     )
   }
   if (

src/mandrel.ts

@@ -1,6 +1,6 @@
 import * as c from './constants'
 import * as httpClient from '@actions/http-client'
-import {downloadExtractAndCacheJDK, getLatestRelease} from './utils'
+import {downloadExtractAndCacheJDK} from './utils'
 import {downloadTool} from '@actions/tool-cache'
 import {basename} from 'path'
 
@@ -11,7 +11,9 @@ const DISCO_API_BASE = 'https://api.foojay.io/disco/v3.0/packages/jdks'
 
 interface JdkData {
   message: string
+  /* eslint-disable @typescript-eslint/no-explicit-any */
   result: any
+  /* eslint-enable @typescript-eslint/no-explicit-any */
 }
 
 export async function setUpMandrel(
@@ -22,7 +24,9 @@ export async function setUpMandrel(
   let mandrelHome
   switch (version) {
     case '':
-    // fetch latest if no version is specified
+      // fetch latest if no version is specified
+      mandrelHome = await setUpMandrelLatest(javaVersion)
+      break
     case 'latest':
       mandrelHome = await setUpMandrelLatest(javaVersion)
       break

src/msvc.ts

@@ -1,5 +1,4 @@
 import * as core from '@actions/core'
-import * as semver from 'semver'
 import {execSync} from 'child_process'
 import {existsSync} from 'fs'
 import {VERSION_DEV} from './constants'