feat: install with npm fallback with bash

Author: Victor Navarro

dist/index.js

@@ -2,6 +2,30 @@ import * as core from '@actions/core';
 import * as exec from '@actions/exec';
 import commandExists from 'command-exists';
 
+const installWithBash = async () => {
+  let output = '';
+  let error = '';
+
+  const options = {
+    listeners: {
+      stdout: (data: Buffer) => {
+        output += data.toString();
+      },
+      stderr: (data: Buffer) => {
+        error += data.toString();
+      },
+    },
+  };
+
+  await exec.exec('curl', ['-sL', 'https://firebase.tools'], options);
+
+  if (error) {
+    throw new Error(error);
+  }
+
+  await exec.exec('bash', [output]);
+};
+
 const run = async () => {
   core.info(
     ` Available environment variables:\n -> ${Object.keys(process.env)
@@ -18,15 +42,26 @@ const run = async () => {
   }
 
   core.exportVariable('FIREBASE_TOKEN', token);
+  core.info('Exported environment variable FIREBASE_TOKEN');
+
   if (await commandExists('npm')) {
-    await exec.exec('npm', ['install', '-g', 'firebase-tools']);
-  } else if (os === 'Linux') {
-    await exec.exec('curl', ['-sL', 'https://firebase.tools', '|', 'bash']);
-  } else {
-    throw new Error('On windows you need to setup node before');
+    core.info('Detected NPM installation');
+    try {
+      core.info('Trying to install firebase-tools using NPM');
+      await exec.exec('npm', ['install', '-g', 'firebase-tools']);
+    } catch (e) {
+      core.info('Installation failed through NPM (maybe you forgot actions/setup-node before this action)');
+      core.info('Trying BASH instead');
+      await installWithBash();
+    }
+  } else if (os === 'Linux' || os === 'macOS') {
+    core.info('Trying to install firebase-tools using BASH');
+    await installWithBash();
+  } else if (os === 'Windows') {
+    throw new Error('On windows you must setup node before running this action');
   }
 };
 
 run()
-  .then(() => core.info('Updated files version successfully'))
+  .then(() => core.info('Successfully installed firebase-tools CLI'))
   .catch(error => core.setFailed(error.message));