fix: not merged multiple mtls options in the respect (#2431)

Author: DmitryAnansky

.changeset/twelve-toys-clean.md

@@ -0,0 +1,5 @@
+---
+"@redocly/cli": patch
+---
+
+Fixed an issue where multiple `--mtls` options in the Respect command did not merge as expected.

packages/cli/src/commands/respect/mtls/validate-mtls-command-option.ts

@@ -1,8 +1,28 @@
 import type { MtlsConfig } from '../index.js';
 
-export function validateMtlsCommandOption(value: string): MtlsConfig | undefined {
-  if (!value) return undefined;
+export function validateMtlsCommandOption(value: string | string[]): MtlsConfig | undefined {
+  if (Array.isArray(value)) {
+    const merged: MtlsConfig = {};
 
+    for (const item of value) {
+      if (!item) continue;
+      if (typeof item === 'string') {
+        const parsed = parseAndValidateMtlsConfig(item);
+        Object.assign(merged, parsed);
+      }
+    }
+
+    return Object.keys(merged).length > 0 ? merged : undefined;
+  }
+
+  if (!value || typeof value !== 'string') {
+    return undefined;
+  }
+
+  return parseAndValidateMtlsConfig(value);
+}
+
+function parseAndValidateMtlsConfig(value: string): MtlsConfig {
   try {
     const parsed = JSON.parse(value);
 

packages/cli/src/index.ts

@@ -735,6 +735,7 @@ yargs(hideBin(process.argv))
             describe:
               'Per-domain mutual TLS certificates configuration as JSON. Format: {"<domain>": {"clientCert": "<path>", "clientKey": "<path>", "caCert": "<path>"}}',
             type: 'string',
+            array: true,
             coerce: validateMtlsCommandOption,
           },
           severity: {