throw when opts is used

mochajs · Feb 8, 2020 · 0c21c42 · 0c21c42
1 parent dcc255b
commit 0c21c42
Showing 1 changed file with 7 additions and 0 deletions.
diff --git a/lib/cli/run.js b/lib/cli/run.js
@@ -279,6 +279,13 @@ exports.builder = yargs =>
         );
       }
 
+      if (argv.opts) {
+        throw createUnsupportedError(
+          `--opts: configuring Mocha via 'mocha.opts' is DEPRECATED and no longer supported.
+          Please use a configuration file instead.`
+        );
+      }
+
       // load requires first, because it can impact "plugin" validation
       handleRequires(argv.require);
       validatePlugin(argv, 'reporter', Mocha.reporters);