[commands] Add validation before checking anything else

beat/cmdline/commands.py

@@ -282,6 +282,12 @@ def push_impl(ctx, names, force, dry_run):
     mappings = ctx.meta.get("mappings", {})
 
     for name in names:
+        validator = common.TYPE_VALIDATOR[asset_info.asset_type](config.path, name)
+        if not validator.valid:
+            raise RuntimeError(
+                "Invalid {} {}".format(asset_info.asset_type, validator.errors)
+            )
+
         with common.Selector(config.path) as selector:
             dependency_type = common.TYPE_PLURAL[asset_info.asset_type]
             fork = selector.forked_from(asset_info.asset_type, name)