feat(cli): Enable community nodes based on npm availability (#3871)

* ⚡ Detect npm availability

* 📘 Expand interfaces

* ⚡ Adjust store

* 🎨 Replace button with warning

packages/cli/src/Server.ts

@@ -33,6 +33,7 @@
 import express from 'express';
 import { readFileSync, promises } from 'fs';
 import { readFile } from 'fs/promises';
+import { exec as callbackExec } from 'child_process';
 import _, { cloneDeep } from 'lodash';
 import { dirname as pathDirname, join as pathJoin, resolve as pathResolve } from 'path';
 import {
@@ -86,6 +87,7 @@ import jwks from 'jwks-rsa';
 import timezones from 'google-timezones-json';
 import parseUrl from 'parseurl';
 import promClient, { Registry } from 'prom-client';
+import { promisify } from 'util';
 import * as Queue from './Queue';
 import {
 	ActiveExecutions,
@@ -167,6 +169,8 @@ import { loadPublicApiVersions } from './PublicApi';
 
 require('body-parser-xml')(bodyParser);
 
+const exec = promisify(callbackExec);
+
 export const externalHooks: IExternalHooksClass = ExternalHooks();
 
 class App {
@@ -330,6 +334,7 @@ class App {
 			onboardingCallPromptEnabled: config.getEnv('onboardingCallPrompt.enabled'),
 			executionMode: config.getEnv('executions.mode'),
 			communityNodesEnabled: config.getEnv('nodes.communityPackages.enabled'),
+			isNpmAvailable: false,
 		};
 	}
 
@@ -374,6 +379,10 @@ class App {
 			promClient.collectDefaultMetrics({ register });
 		}
 
+		this.frontendSettings.isNpmAvailable = await exec('npm --version')
+			.then(() => true)
+			.catch(() => false);
+
 		this.versions = await GenericHelpers.getVersions();
 		this.frontendSettings.versionCli = this.versions.cli;