Improve error handling

src/errorHandler.ts

@@ -5,16 +5,22 @@ const versionedOptions = [
   ["preserve-blank-lines", "preserveBlankLines", "1.3.0"],
   ["preserve-leading-space", "preserveLeadingSpace", "1.2.0"],
 ];
-const errorRegex = /Error.*/;
+const goodStderrRegex = /Linting\s\d+\/\d+\sfiles/;
 
-export function getErrorMsg(stderr: string): string | undefined {
-  if (stderr.includes("No module named")) {
+export function getErrorMsg(stderr: string): string | null {
+  if (stderr.endsWith("No module named djlint")) {
     return "djLint is not installed for the current active Python interpreter.";
   }
   for (const [cliOption, vscodeOption, minVersion] of versionedOptions) {
-    if (stderr.includes(`No such option: --${cliOption}`)) {
+    if (stderr.includes(`Error: No such option: --${cliOption}`)) {
       return `Your version of djLint does not support the ${vscodeOption} option. Disable it in the settings or install djLint>=${minVersion}.`;
     }
   }
-  return stderr.match(errorRegex)?.toString();
+
+  // Workaround for djLint<1.18
+  if (goodStderrRegex.test(stderr)) {
+    return null;
+  }
+
+  return stderr;
 }

src/runner.ts

@@ -23,6 +23,7 @@ export function runDjlint(
       stderr += data;
     });
     child.on("close", () => {
+      stderr = stderr.trim();
       const errMsg = getErrorMsg(stderr);
       if (errMsg) {
         void vscode.window.showErrorMessage(errMsg);