Improved resilience if a command is not available

Author: luca-vogels

.github/workflows/on-push.yml

@@ -2,7 +2,7 @@ name: On Push
 on: [push]
 jobs:
   build:
-    name: Building
+    name: Build & Test
     runs-on: Linux
     steps:
       - name: Checking out repository
@@ -16,20 +16,7 @@ jobs:
         run: npm install
       - name: Building
         run: npm run build
-  
-  testing:
-    name: Testing
-    needs: build
-    runs-on: Linux
-    steps:
-      - name: "Setup Node"
-        uses: actions/setup-node@v4
-        with:
-          node-version: '22'
-          cache: 'npm'
-      - name: Installing 
-        run: npm install
-      - name: Running linter
+      - name: Linting
         run: npm run lint
-      - name: Running tests
-        run:  npm run test
+      - name: Testing
+        run: npm run test

package.json

@@ -1,6 +1,6 @@
 {
   "name": "lup-system",
-  "version": "1.3.0",
+  "version": "1.3.1",
   "description": "NodeJS library to retrieve system information and utilization.",
   "files": [
     "lib/**/*"

src/cpu.ts

@@ -1,19 +1,15 @@
 import os from 'os';
 import { sleep } from './utils';
 
-
 export type CPUUtilization = {
-
   /** Overall CPU utilization as a percentage (0.0-1.0). */
   overall: number;
 
   /** Utilization of each CPU core as a percentage (0.0-1.0). */
   cores: number[];
-
 };
 
 export type CPU = {
-
   /** Name of the CPU. */
   name: string;
 
@@ -33,19 +29,15 @@ export type CPU = {
   utilization: CPUUtilization;
 };
 
-
-
-
 /** Intervall in milliseconds at which CPU utilization is computed. */
 export let CPU_COMPUTE_UTILIZATION_INTERVAL = 1000;
 
-
 const CPU_COMPUTE_UTILIZATION_INITIAL_DELAY = 50;
 
 let PREV_CPU_CORES: os.CpuInfo[] = [];
 const CPU_UTILIZATION: CPUUtilization = {
   overall: 0,
-  cores: []
+  cores: [],
 };
 let CPU_COMPUTE_RUNNING = false;
 let CPU_COMPUTE_TIMEOUT: NodeJS.Timeout | null = null;
@@ -96,11 +88,9 @@ export function stopCpuUtilizationComputation() {
   CPU_COMPUTE_RUNNING = false;
 }
 
-
-
 /**
  * Returns information about the CPU.
- * 
+ *
  * @returns CPU information.
  */
 export async function getCpuInfo(): Promise<CPU> {
@@ -112,14 +102,13 @@ export async function getCpuInfo(): Promise<CPU> {
     name: cpuCores[0].model,
     speed: cpuCores[0].speed,
     utilization: await getCpuUtilization(),
-  }
+  };
 }
 
-
 /**
  * Returns the current CPU utilization.
  * If the computation is not running, it will start the computation and return the initial values.
- * 
+ *
  * @returns CPU utilization data.
  */
 export async function getCpuUtilization(): Promise<CPUUtilization> {
@@ -131,8 +120,6 @@ export async function getCpuUtilization(): Promise<CPUUtilization> {
   return CPU_UTILIZATION;
 }
 
-
-
 /**
  * Returns the number of CPU cores available on the system.
  *
@@ -141,4 +128,3 @@ export async function getCpuUtilization(): Promise<CPUUtilization> {
 export function getCpuCoreCount(): number {
   return os.cpus().length;
 }
-

src/drive.ts

@@ -40,7 +40,7 @@ export async function getDrives(includeVirtual: boolean = false): Promise<DriveI
   switch (process.platform) {
     case 'darwin':
     case 'linux': {
-      const output = await execCommand('df -PT --block-size=1');
+      const output = await execCommand('df -PT --block-size=1').catch(() => '');
       const lines = output.split('\n');
       for (let i = 1; i < lines.length; i++) {
         // skip first line (header)
@@ -68,7 +68,7 @@ export async function getDrives(includeVirtual: boolean = false): Promise<DriveI
     case 'win32': {
       const output = await execCommand(
         'powershell -Command "Get-CimInstance -ClassName Win32_LogicalDisk | Select-Object Caption, VolumeName, Size, FreeSpace, FileSystem | ConvertTo-Json"',
-      );
+      ).catch(() => '');
       const json = JSON.parse(output);
       for (const drive of json) {
         const total = parseInt(drive.Size, 10) || 0;