1 files changed, 23 insertions, 0 deletions
diff --git a/src/utils/check-dependencies.ts b/src/utils/check-dependencies.ts
new file mode 100644
index 0000000000..7bcb87a68f
--- /dev/null
+++ b/src/utils/check-dependencies.ts
@@ -0,0 +1,23 @@
+import {logInfo, logDone, logWarn} from 'log-cool';
+import {exec} from 'shelljs';
+
+export default function(): void {
+	checkDependency('Node.js', 'node -v', x => x.match(/^v(.*)\r?\n$/)[1]);
+	checkDependency('npm', 'npm -v', x => x.match(/^(.*)\r?\n$/)[1]);
+	checkDependency('MongoDB', 'mongo --version', x => x.match(/^MongoDB shell version: (.*)\r?\n$/)[1]);
+	checkDependency('Redis', 'redis-server --version', x => x.match(/v=([0-9\.]*)/)[1]);
+	logDone('Successfully checked external dependencies');
+}
+
+function checkDependency(serviceName: string, command: string, transform: (x: string) => string): void {
+	const code = {
+		success: 0,
+		notFound: 127
+	};
+	const x = exec(command, { silent: true }) as any;
+	if (x.code === code.success) {
+		logInfo(`DEPS: ${serviceName} ${transform(x.stdout)}`);
+	} else if (x.code === code.notFound) {
+		logWarn(`Unable to find ${serviceName}`);
+	}
+}