Use built-in getExecOutput

Signed-off-by: CrazyMax <crazy-max@users.noreply.github.com>

src/exec.ts

@@ -1,34 +0,0 @@
-import * as actionsExec from '@actions/exec';
-import {ExecOptions} from '@actions/exec';
-
-export interface ExecResult {
-  success: boolean;
-  stdout: string;
-  stderr: string;
-}
-
-export const exec = async (command: string, args: string[] = [], silent: boolean): Promise<ExecResult> => {
-  let stdout = '';
-  let stderr = '';
-
-  const options: ExecOptions = {
-    silent: silent,
-    ignoreReturnCode: true
-  };
-  options.listeners = {
-    stdout: (data: Buffer) => {
-      stdout += data.toString();
-    },
-    stderr: (data: Buffer) => {
-      stderr += data.toString();
-    }
-  };
-
-  const returnCode: number = await actionsExec.exec(command, args, options);
-
-  return {
-    success: returnCode === 0,
-    stdout: stdout.trim(),
-    stderr: stderr.trim()
-  };
-};

src/main.ts

@@ -1,4 +1,3 @@
-import * as mexec from './exec';
 import * as core from '@actions/core';
 import * as exec from '@actions/exec';
 import {issueCommand} from '@actions/core/lib/command';
@@ -31,9 +30,14 @@ async function run(): Promise<void> {
     core.endGroup();
 
     core.startGroup(`Extracting available platforms`);
-    await mexec.exec(`docker`, ['run', '--rm', '--privileged', image], true).then(res => {
+    await exec
-      if (res.stderr != '' && !res.success) {
+      .getExecOutput('docker', ['run', '--rm', '--privileged', image], {
-        throw new Error(res.stderr);
+        ignoreReturnCode: true,
+        silent: true
+      })
+      .then(res => {
+        if (res.stderr.length > 0 && res.exitCode != 0) {
+          throw new Error(res.stderr.trim());
         }
         const platforms: Platforms = JSON.parse(res.stdout.trim());
         core.info(`${platforms.supported.join(',')}`);