fix(cli): Convert severity to GitHub workflow commands format (#337)

Author: Thiry1

cmd/rslint/cmd.go

@@ -97,6 +97,16 @@ func printDiagnostic(d rule.RuleDiagnostic, w *bufio.Writer, comparePathOptions
 
 // print as [Workflow commands for GitHub Actions](https://docs.github.com/en/actions/reference/workflows-and-actions/workflow-commands) format
 func printDiagnosticGitHub(d rule.RuleDiagnostic, w *bufio.Writer, comparePathOptions tspath.ComparePathsOptions) {
+	var severity string
+	switch d.Severity {
+	case rule.SeverityError:
+		severity = "error"
+	case rule.SeverityWarning:
+		severity = "warning"
+	default:
+		severity = "notice"
+	}
+
 	diagnosticStart := d.Range.Pos()
 	diagnosticEnd := d.Range.End()
 
@@ -106,7 +116,7 @@ func printDiagnosticGitHub(d rule.RuleDiagnostic, w *bufio.Writer, comparePathOp
 	filePath := tspath.ConvertToRelativePath(d.SourceFile.FileName(), comparePathOptions)
 	output := fmt.Sprintf(
 		"::%s file=%s,line=%d,endLine=%d,col=%d,endColumn=%d,title=%s::%s\n",
-		d.Severity.String(),
+		severity,
 		escapeProperty(filePath),
 		startLine+1,
 		endLine+1,

packages/rslint-test-tools/tests/cli/basic.test.ts

@@ -224,6 +224,7 @@ describe('CLI Configuration Tests', () => {
             },
           },
           rules: {
+            '@typescript-eslint/no-explicit-any': 'warn',
             '@typescript-eslint/no-unsafe-member-access': 'error',
           },
           plugins: ['@typescript-eslint'],
@@ -253,7 +254,7 @@ describe('CLI Configuration Tests', () => {
 
       expect(lines.length).toBe(2);
       expect(lines[0]).toBe(
-        '::error file=test%3A%25%2C%0D%0Afile.ts,line=2,endLine=2,col=16,endColumn=19,title=@typescript-eslint/no-explicit-any::Unexpected any. Specify a different type.',
+        '::warning file=test%3A%25%2C%0D%0Afile.ts,line=2,endLine=2,col=16,endColumn=19,title=@typescript-eslint/no-explicit-any::Unexpected any. Specify a different type.',
       );
       expect(lines[1]).toBe(
         '::error file=test%3A%25%2C%0D%0Afile.ts,line=3,endLine=3,col=11,endColumn=12,title=@typescript-eslint/no-unsafe-member-access::Unsafe member access .b on an `any` value.',