From: Dmitry Volyntsev <xeioex@nginx.com>
Date: Wed, 3 Jun 2026 02:06:15 +0000 (-0700)
Subject: HTTP: fixed exception classes
X-Git-Tag: 1.0.0~27
X-Git-Url: http://git.kaiwu.me/postgresql/log/contrib/postgres_fdw/static/gitweb.js?a=commitdiff_plain;h=0b512efd4d59250d72180eed7baacb3f29229123;p=njs.git

HTTP: fixed exception classes

Report HTTP request API misuse as TypeError and status bounds violations as
RangeError.  Keep nginx output and request body collection failures as
InternalError, since they are host/runtime failures rather than invalid
JavaScript arguments.
---

diff --git a/nginx/ngx_http_js_module.c b/nginx/ngx_http_js_module.c
index 78de01c5..05ca87fe 100644
--- a/nginx/ngx_http_js_module.c
+++ b/nginx/ngx_http_js_module.c
@@ -2978,7 +2978,7 @@ ngx_http_js_ext_send_header(njs_vm_t *vm, njs_value_t *args, njs_uint_t nargs,
     r = njs_vm_external(vm, ngx_http_js_request_proto_id,
                         njs_argument(args, 0));
     if (r == NULL) {
-        njs_vm_error(vm, "\"this\" is not an external");
+        njs_vm_type_error(vm, "\"this\" is not an external");
         return NJS_ERROR;
     }
 
@@ -3014,14 +3014,14 @@ ngx_http_js_ext_send(njs_vm_t *vm, njs_value_t *args, njs_uint_t nargs,
     r = njs_vm_external(vm, ngx_http_js_request_proto_id,
                         njs_argument(args, 0));
     if (r == NULL) {
-        njs_vm_error(vm, "\"this\" is not an external");
+        njs_vm_type_error(vm, "\"this\" is not an external");
         return NJS_ERROR;
     }
 
     ctx = ngx_http_get_module_ctx(r, ngx_http_js_module);
 
     if (ctx->filter) {
-        njs_vm_error(vm, "cannot send while in body filter");
+        njs_vm_type_error(vm, "cannot send while in body filter");
         return NJS_ERROR;
     }
 
@@ -3093,19 +3093,19 @@ ngx_http_js_ext_send_buffer(njs_vm_t *vm, njs_value_t *args, njs_uint_t nargs,
     r = njs_vm_external(vm, ngx_http_js_request_proto_id,
                         njs_argument(args, 0));
     if (r == NULL) {
-        njs_vm_error(vm, "\"this\" is not an external");
+        njs_vm_type_error(vm, "\"this\" is not an external");
         return NJS_ERROR;
     }
 
     ctx = ngx_http_get_module_ctx(r, ngx_http_js_module);
 
     if (!ctx->filter) {
-        njs_vm_error(vm, "cannot send buffer while not filtering");
+        njs_vm_type_error(vm, "cannot send buffer while not filtering");
         return NJS_ERROR;
     }
 
     if (ngx_js_string(vm, njs_arg(args, nargs, 1), &buffer) != NGX_OK) {
-        njs_vm_error(vm, "failed to get buffer arg");
+        njs_vm_type_error(vm, "failed to get buffer arg");
         return NJS_ERROR;
     }
 
@@ -3128,7 +3128,7 @@ ngx_http_js_ext_send_buffer(njs_vm_t *vm, njs_value_t *args, njs_uint_t nargs,
 
     cl = ngx_chain_get_free_buf(r->pool, &ctx->free);
     if (cl == NULL) {
-        njs_vm_error(vm, "memory error");
+        njs_vm_memory_error(vm);
         return NJS_ERROR;
     }
 
@@ -3165,7 +3165,7 @@ ngx_http_js_ext_set_return_value(njs_vm_t *vm, njs_value_t *args,
     r = njs_vm_external(vm, ngx_http_js_request_proto_id,
                         njs_argument(args, 0));
     if (r == NULL) {
-        njs_vm_error(vm, "\"this\" is not an external");
+        njs_vm_type_error(vm, "\"this\" is not an external");
         return NJS_ERROR;
     }
 
@@ -3188,14 +3188,14 @@ ngx_http_js_ext_done(njs_vm_t *vm, njs_value_t *args, njs_uint_t nargs,
     r = njs_vm_external(vm, ngx_http_js_request_proto_id,
                         njs_argument(args, 0));
     if (r == NULL) {
-        njs_vm_error(vm, "\"this\" is not an external");
+        njs_vm_type_error(vm, "\"this\" is not an external");
         return NJS_ERROR;
     }
 
     ctx = ngx_http_get_module_ctx(r, ngx_http_js_module);
 
     if (!ctx->filter) {
-        njs_vm_error(vm, "cannot set done while not filtering");
+        njs_vm_type_error(vm, "cannot set done while not filtering");
         return NJS_ERROR;
     }
 
@@ -3217,7 +3217,7 @@ ngx_http_js_ext_finish(njs_vm_t *vm, njs_value_t *args, njs_uint_t nargs,
     r = njs_vm_external(vm, ngx_http_js_request_proto_id,
                         njs_argument(args, 0));
     if (r == NULL) {
-        njs_vm_error(vm, "\"this\" is not an external");
+        njs_vm_type_error(vm, "\"this\" is not an external");
         return NJS_ERROR;
     }
 
@@ -3249,7 +3249,7 @@ ngx_http_js_ext_return(njs_vm_t *vm, njs_value_t *args, njs_uint_t nargs,
     r = njs_vm_external(vm, ngx_http_js_request_proto_id,
                         njs_argument(args, 0));
     if (r == NULL) {
-        njs_vm_error(vm, "\"this\" is not an external");
+        njs_vm_type_error(vm, "\"this\" is not an external");
         return NJS_ERROR;
     }
 
@@ -3258,7 +3258,7 @@ ngx_http_js_ext_return(njs_vm_t *vm, njs_value_t *args, njs_uint_t nargs,
     }
 
     if (status < 0 || status > 999) {
-        njs_vm_error(vm, "code is out of range");
+        njs_vm_range_error(vm, "code is out of range");
         return NJS_ERROR;
     }
 
@@ -3268,7 +3268,7 @@ ngx_http_js_ext_return(njs_vm_t *vm, njs_value_t *args, njs_uint_t nargs,
         || !njs_value_is_null_or_undefined(njs_arg(args, nargs, 2)))
     {
         if (ngx_js_string(vm, njs_arg(args, nargs, 2), &text) != NGX_OK) {
-            njs_vm_error(vm, "failed to convert text");
+            njs_vm_memory_error(vm);
             return NJS_ERROR;
         }
 
@@ -3282,7 +3282,7 @@ ngx_http_js_ext_return(njs_vm_t *vm, njs_value_t *args, njs_uint_t nargs,
         ctx->status = ngx_http_send_response(r, status, NULL, &cv);
 
         if (ctx->status == NGX_ERROR) {
-            njs_vm_error(vm, "failed to send response");
+            njs_vm_internal_error(vm, "failed to send response");
             return NJS_ERROR;
         }
 
@@ -3306,7 +3306,7 @@ ngx_http_js_ext_decline(njs_vm_t *vm, njs_value_t *args, njs_uint_t nargs,
     r = njs_vm_external(vm, ngx_http_js_request_proto_id,
                         njs_argument(args, 0));
     if (r == NULL) {
-        njs_vm_error(vm, "\"this\" is not an external");
+        njs_vm_type_error(vm, "\"this\" is not an external");
         return NJS_ERROR;
     }
 
@@ -3331,29 +3331,31 @@ ngx_http_js_ext_internal_redirect(njs_vm_t *vm, njs_value_t *args,
     r = njs_vm_external(vm, ngx_http_js_request_proto_id,
                         njs_argument(args, 0));
     if (r == NULL) {
-        njs_vm_error(vm, "\"this\" is not an external");
+        njs_vm_type_error(vm, "\"this\" is not an external");
         return NJS_ERROR;
     }
 
     if (r->parent != NULL) {
-        njs_vm_error(vm, "internalRedirect cannot be called from a subrequest");
+        njs_vm_type_error(vm, "internalRedirect cannot be called from "
+                          "a subrequest");
         return NJS_ERROR;
     }
 
     ctx = ngx_http_get_module_ctx(r, ngx_http_js_module);
 
     if (ctx->filter) {
-        njs_vm_error(vm, "internalRedirect cannot be called while filtering");
+        njs_vm_type_error(vm, "internalRedirect cannot be called while "
+                          "filtering");
         return NJS_ERROR;
     }
 
     if (ngx_js_string(vm, njs_arg(args, nargs, 1), &uri) != NGX_OK) {
-        njs_vm_error(vm, "failed to convert uri arg");
+        njs_vm_type_error(vm, "failed to convert uri arg");
         return NJS_ERROR;
     }
 
     if (uri.length == 0) {
-        njs_vm_error(vm, "uri is empty");
+        njs_vm_type_error(vm, "uri is empty");
         return NJS_ERROR;
     }
 
@@ -3744,7 +3746,7 @@ ngx_http_js_form_to_value(njs_vm_t *vm, ngx_http_request_t *r,
     }
 
     if (rc == NGX_JS_FORM_PARSE_ERROR) {
-        njs_vm_error(vm, "%V", &error);
+        njs_vm_type_error(vm, "%V", &error);
         return NJS_ERROR;
     }
 
@@ -3888,7 +3890,7 @@ ngx_http_js_ext_read_request_body(njs_vm_t *vm, njs_value_t *args,
     r = njs_vm_external(vm, ngx_http_js_request_proto_id,
                         njs_argument(args, 0));
     if (r == NULL) {
-        njs_vm_error(vm, "\"this\" is not an external");
+        njs_vm_type_error(vm, "\"this\" is not an external");
         return NJS_ERROR;
     }
 
@@ -3912,7 +3914,7 @@ ngx_http_js_ext_read_request_body(njs_vm_t *vm, njs_value_t *args,
     }
 
     if (ctx->body_read_event) {
-        njs_vm_error(vm, "request body is already being read");
+        njs_vm_type_error(vm, "request body is already being read");
         return NJS_ERROR;
     }
 
@@ -3937,7 +3939,7 @@ ngx_http_js_ext_read_request_body(njs_vm_t *vm, njs_value_t *args,
 resolve:
 
     if (ngx_http_js_collect_body(r, ctx) != NGX_OK) {
-        njs_vm_memory_error(vm);
+        njs_vm_internal_error(vm, "failed to read request body");
         return NJS_ERROR;
     }
 
@@ -3999,7 +4001,7 @@ ngx_http_js_ext_read_request_form(njs_vm_t *vm, njs_value_t *args,
     r = njs_vm_external(vm, ngx_http_js_request_proto_id,
                         njs_argument(args, 0));
     if (r == NULL) {
-        njs_vm_error(vm, "\"this\" is not an external");
+        njs_vm_type_error(vm, "\"this\" is not an external");
         return NJS_ERROR;
     }
 
@@ -4017,7 +4019,7 @@ ngx_http_js_ext_read_request_form(njs_vm_t *vm, njs_value_t *args,
     }
 
     if (ctx->body_read_event) {
-        njs_vm_error(vm, "request body is already being read");
+        njs_vm_type_error(vm, "request body is already being read");
         return NJS_ERROR;
     }
 
@@ -4051,7 +4053,7 @@ ngx_http_js_ext_read_request_form(njs_vm_t *vm, njs_value_t *args,
 resolve:
 
     if (ngx_http_js_collect_body(r, ctx) != NGX_OK) {
-        njs_vm_memory_error(vm);
+        njs_vm_internal_error(vm, "failed to read request body");
         return NJS_ERROR;
     }
 
@@ -4073,7 +4075,7 @@ ngx_http_js_ext_request_form_get(njs_vm_t *vm, njs_value_t *args,
     form = njs_vm_external(vm, ngx_http_js_request_form_proto_id,
                            njs_argument(args, 0));
     if (form == NULL) {
-        njs_vm_error(vm, "\"this\" is not a RequestForm");
+        njs_vm_type_error(vm, "\"this\" is not a RequestForm");
         return NJS_ERROR;
     }
 
@@ -4135,7 +4137,7 @@ ngx_http_js_ext_request_form_has(njs_vm_t *vm, njs_value_t *args,
     form = njs_vm_external(vm, ngx_http_js_request_form_proto_id,
                            njs_argument(args, 0));
     if (form == NULL) {
-        njs_vm_error(vm, "\"this\" is not a RequestForm");
+        njs_vm_type_error(vm, "\"this\" is not a RequestForm");
         return NJS_ERROR;
     }
 
@@ -4177,13 +4179,13 @@ ngx_http_js_ext_request_form_for_each(njs_vm_t *vm, njs_value_t *args,
 
     form = njs_vm_external(vm, ngx_http_js_request_form_proto_id, this);
     if (form == NULL) {
-        njs_vm_error(vm, "\"this\" is not a RequestForm");
+        njs_vm_type_error(vm, "\"this\" is not a RequestForm");
         return NJS_ERROR;
     }
 
     callback = njs_arg(args, nargs, 1);
     if (!njs_value_is_function(callback)) {
-        njs_vm_error(vm, "\"callback\" is not a function");
+        njs_vm_type_error(vm, "\"callback\" is not a function");
         return NJS_ERROR;
     }
 
@@ -4261,7 +4263,7 @@ ngx_http_js_ext_request_form_has_files(njs_vm_t *vm, njs_value_t *args,
     form = njs_vm_external(vm, ngx_http_js_request_form_proto_id,
                            njs_argument(args, 0));
     if (form == NULL) {
-        njs_vm_error(vm, "\"this\" is not a RequestForm");
+        njs_vm_type_error(vm, "\"this\" is not a RequestForm");
         return NJS_ERROR;
     }
 
@@ -4490,7 +4492,7 @@ ngx_http_js_ext_js_var_names(njs_vm_t *vm, njs_value_t *args,
     r = njs_vm_external(vm, ngx_http_js_request_proto_id,
                         njs_argument(args, 0));
     if (r == NULL) {
-        njs_vm_error(vm, "\"this\" is not an external");
+        njs_vm_type_error(vm, "\"this\" is not an external");
         return NJS_ERROR;
     }
 
@@ -4634,7 +4636,7 @@ ngx_http_js_request_variables(njs_vm_t *vm, njs_object_prop_t *prop,
     v = ngx_hash_find(&cmcf->variables_hash, key, name.data, val.length);
 
     if (v == NULL) {
-        njs_vm_error(vm, "variable not found");
+        njs_vm_type_error(vm, "variable not found");
         return NJS_ERROR;
     }
 
@@ -4645,7 +4647,7 @@ ngx_http_js_request_variables(njs_vm_t *vm, njs_object_prop_t *prop,
     if (v->set_handler != NULL) {
         vv = ngx_pcalloc(r->pool, sizeof(ngx_http_variable_value_t));
         if (vv == NULL) {
-            njs_vm_error(vm, "internal error");
+            njs_vm_memory_error(vm);
             return NJS_ERROR;
         }
 
@@ -4660,7 +4662,7 @@ ngx_http_js_request_variables(njs_vm_t *vm, njs_object_prop_t *prop,
     }
 
     if (!(v->flags & NGX_HTTP_VAR_INDEXED)) {
-        njs_vm_error(vm, "variable is not writable");
+        njs_vm_type_error(vm, "variable is not writable");
         return NJS_ERROR;
     }
 
@@ -4672,7 +4674,7 @@ ngx_http_js_request_variables(njs_vm_t *vm, njs_object_prop_t *prop,
     vv->data = ngx_pnalloc(r->pool, s.length);
     if (vv->data == NULL) {
         vv->valid = 0;
-        njs_vm_error(vm, "internal error");
+        njs_vm_memory_error(vm);
         return NJS_ERROR;
     }
 
@@ -4742,25 +4744,25 @@ ngx_http_js_ext_subrequest(njs_vm_t *vm, njs_value_t *args, njs_uint_t nargs,
     r = njs_vm_external(vm, ngx_http_js_request_proto_id,
                         njs_argument(args, 0));
     if (r == NULL) {
-        njs_vm_error(vm, "\"this\" is not an external");
+        njs_vm_type_error(vm, "\"this\" is not an external");
         return NJS_ERROR;
     }
 
     ctx = ngx_http_get_module_ctx(r, ngx_http_js_module);
 
     if (r->subrequest_in_memory) {
-        njs_vm_error(vm, "subrequest can only be created for "
-                         "the primary request");
+        njs_vm_type_error(vm, "subrequest can only be created for "
+                          "the primary request");
         return NJS_ERROR;
     }
 
     if (ngx_js_string(vm, njs_arg(args, nargs, 1), &uri_arg) != NGX_OK) {
-        njs_vm_error(vm, "failed to convert uri arg");
+        njs_vm_type_error(vm, "failed to convert uri arg");
         return NJS_ERROR;
     }
 
     if (uri_arg.length == 0) {
-        njs_vm_error(vm, "uri is empty");
+        njs_vm_type_error(vm, "uri is empty");
         return NJS_ERROR;
     }
 
@@ -4779,7 +4781,7 @@ ngx_http_js_ext_subrequest(njs_vm_t *vm, njs_value_t *args, njs_uint_t nargs,
 
     if (njs_value_is_string(arg)) {
         if (ngx_js_string(vm, arg, &args_arg) != NJS_OK) {
-            njs_vm_error(vm, "failed to convert args");
+            njs_vm_type_error(vm, "failed to convert args");
             return NJS_ERROR;
         }
 
@@ -4790,7 +4792,7 @@ ngx_http_js_ext_subrequest(njs_vm_t *vm, njs_value_t *args, njs_uint_t nargs,
         options = arg;
 
     } else if (!njs_value_is_null_or_undefined(arg)) {
-        njs_vm_error(vm, "failed to convert args");
+        njs_vm_type_error(vm, "failed to convert args");
         return NJS_ERROR;
     }
 
@@ -4798,7 +4800,7 @@ ngx_http_js_ext_subrequest(njs_vm_t *vm, njs_value_t *args, njs_uint_t nargs,
         value = njs_vm_object_prop(vm, options, &args_key, &lvalue);
         if (value != NULL) {
             if (ngx_js_string(vm, value, &args_arg) != NGX_OK) {
-                njs_vm_error(vm, "failed to convert options.args");
+                njs_vm_type_error(vm, "failed to convert options.args");
                 return NJS_ERROR;
             }
         }
@@ -4811,7 +4813,7 @@ ngx_http_js_ext_subrequest(njs_vm_t *vm, njs_value_t *args, njs_uint_t nargs,
         value = njs_vm_object_prop(vm, options, &method_key, &lvalue);
         if (value != NULL) {
             if (ngx_js_string(vm, value, &method_name) != NGX_OK) {
-                njs_vm_error(vm, "failed to convert options.method");
+                njs_vm_type_error(vm, "failed to convert options.method");
                 return NJS_ERROR;
             }
 
@@ -4832,7 +4834,7 @@ ngx_http_js_ext_subrequest(njs_vm_t *vm, njs_value_t *args, njs_uint_t nargs,
         value = njs_vm_object_prop(vm, options, &body_key, &lvalue);
         if (value != NULL) {
             if (ngx_js_string(vm, value, &body_arg) != NGX_OK) {
-                njs_vm_error(vm, "failed to convert options.body");
+                njs_vm_type_error(vm, "failed to convert options.body");
                 return NJS_ERROR;
             }
 
@@ -4841,7 +4843,7 @@ ngx_http_js_ext_subrequest(njs_vm_t *vm, njs_value_t *args, njs_uint_t nargs,
     }
 
     if (ngx_http_js_parse_unsafe_uri(r, &uri_arg, &args_arg) != NGX_OK) {
-        njs_vm_error(vm, "unsafe uri");
+        njs_vm_type_error(vm, "unsafe uri");
         return NJS_ERROR;
     }
 
@@ -4849,7 +4851,7 @@ ngx_http_js_ext_subrequest(njs_vm_t *vm, njs_value_t *args, njs_uint_t nargs,
 
     if (callback == NULL && !njs_value_is_undefined(arg)) {
         if (!njs_value_is_function(arg)) {
-            njs_vm_error(vm, "callback is not a function");
+            njs_vm_type_error(vm, "callback is not a function");
             return NJS_ERROR;
 
         } else {
@@ -4858,7 +4860,8 @@ ngx_http_js_ext_subrequest(njs_vm_t *vm, njs_value_t *args, njs_uint_t nargs,
     }
 
     if (detached && callback != NULL) {
-        njs_vm_error(vm, "detached flag and callback are mutually exclusive");
+        njs_vm_type_error(vm, "detached flag and callback are mutually "
+                          "exclusive");
         return NJS_ERROR;
     }
 
@@ -4916,7 +4919,7 @@ ngx_http_js_ext_subrequest(njs_vm_t *vm, njs_value_t *args, njs_uint_t nargs,
     if (ngx_http_subrequest(r, &uri, rargs.len ? &rargs : NULL, &sr, ps, flags)
         != NGX_OK)
     {
-        njs_vm_error(vm, "subrequest creation failed");
+        njs_vm_internal_error(vm, "subrequest creation failed");
         return NJS_ERROR;
     }
 
@@ -4971,7 +4974,7 @@ ngx_http_js_ext_subrequest(njs_vm_t *vm, njs_value_t *args, njs_uint_t nargs,
 
 memory_error:
 
-    njs_vm_error(vm, "internal error");
+    njs_vm_memory_error(vm);
 
     return NJS_ERROR;
 }
@@ -5575,8 +5578,8 @@ ngx_http_js_content_length(njs_vm_t *vm, ngx_http_request_t *r,
             n = ngx_atoi(h->value.data, h->value.len);
             if (n == NGX_ERROR) {
                 h->hash = 0;
-                njs_vm_error(vm, "failed converting argument "
-                             "to positive integer");
+                njs_vm_type_error(vm, "failed converting argument "
+                                  "to positive integer");
                 return NJS_ERROR;
             }
 
@@ -6159,7 +6162,7 @@ ngx_http_qjs_ext_args(JSContext *cx, JSValueConst this_val)
 
     req = JS_GetOpaque(this_val, NGX_QJS_CLASS_ID_HTTP_REQUEST);
     if (req == NULL) {
-        return JS_ThrowInternalError(cx, "\"this\" is not a request object");
+        return JS_ThrowTypeError(cx, "\"this\" is not a request object");
     }
 
     if (!JS_IsUndefined(req->args)) {
@@ -6297,7 +6300,7 @@ ngx_http_qjs_ext_done(JSContext *cx, JSValueConst this_val,
 
     r = ngx_http_qjs_request(this_val);
     if (r == NULL) {
-        return JS_ThrowInternalError(cx, "\"this\" is not a request object");
+        return JS_ThrowTypeError(cx, "\"this\" is not a request object");
     }
 
     ctx = ngx_http_get_module_ctx(r, ngx_http_js_module);
@@ -6321,7 +6324,7 @@ ngx_http_qjs_ext_finish(JSContext *cx, JSValueConst this_val,
 
     r = ngx_http_qjs_request(this_val);
     if (r == NULL) {
-        return JS_ThrowInternalError(cx, "\"this\" is not a request object");
+        return JS_ThrowTypeError(cx, "\"this\" is not a request object");
     }
 
     if (ngx_http_send_special(r, NGX_HTTP_LAST) == NGX_ERROR) {
@@ -6344,7 +6347,7 @@ ngx_http_qjs_ext_headers_in(JSContext *cx, JSValueConst this_val)
 
     r = ngx_http_qjs_request(this_val);
     if (r == NULL) {
-        return JS_ThrowInternalError(cx, "\"this\" is not a request object");
+        return JS_ThrowTypeError(cx, "\"this\" is not a request object");
     }
 
     obj = JS_NewObjectProtoClass(cx, JS_NULL, NGX_QJS_CLASS_ID_HTTP_HEADERS_IN);
@@ -6363,7 +6366,7 @@ ngx_http_qjs_ext_headers_out(JSContext *cx, JSValueConst this_val)
 
     r = ngx_http_qjs_request(this_val);
     if (r == NULL) {
-        return JS_ThrowInternalError(cx, "\"this\" is not a request object");
+        return JS_ThrowTypeError(cx, "\"this\" is not a request object");
     }
 
     obj = JS_NewObjectProtoClass(cx, JS_NULL,
@@ -6383,7 +6386,7 @@ ngx_http_qjs_ext_http_version(JSContext *cx, JSValueConst this_val)
 
     r = ngx_http_qjs_request(this_val);
     if (r == NULL) {
-        return JS_ThrowInternalError(cx, "\"this\" is not a request object");
+        return JS_ThrowTypeError(cx, "\"this\" is not a request object");
     }
 
     switch (r->http_version) {
@@ -6425,7 +6428,7 @@ ngx_http_qjs_ext_internal(JSContext *cx, JSValueConst this_val)
 
     r = ngx_http_qjs_request(this_val);
     if (r == NULL) {
-        return JS_ThrowInternalError(cx, "\"this\" is not a request object");
+        return JS_ThrowTypeError(cx, "\"this\" is not a request object");
     }
 
     return JS_NewBool(cx, r->internal);
@@ -6441,7 +6444,7 @@ ngx_http_qjs_ext_internal_redirect(JSContext *cx, JSValueConst this_val,
 
     r = ngx_http_qjs_request(this_val);
     if (r == NULL) {
-        return JS_ThrowInternalError(cx, "\"this\" is not a request object");
+        return JS_ThrowTypeError(cx, "\"this\" is not a request object");
     }
 
     if (r->parent != NULL) {
@@ -6476,7 +6479,7 @@ ngx_http_qjs_ext_log(JSContext *cx, JSValueConst this_val, int argc,
 
     r = ngx_http_qjs_request(this_val);
     if (r == NULL) {
-        return JS_ThrowInternalError(cx, "\"this\" is not a request object");
+        return JS_ThrowTypeError(cx, "\"this\" is not a request object");
     }
 
     for (n = 0; n < argc; n++) {
@@ -6503,7 +6506,7 @@ ngx_http_qjs_ext_periodic_variables(JSContext *cx,
 
     req = JS_GetOpaque(this_val, NGX_QJS_CLASS_ID_HTTP_PERIODIC);
     if (req == NULL) {
-        return JS_ThrowInternalError(cx, "\"this\" is not a periodic object");
+        return JS_ThrowTypeError(cx, "\"this\" is not a periodic object");
     }
 
     obj = JS_NewObjectProtoClass(cx, JS_NULL, NGX_QJS_CLASS_ID_HTTP_VARS);
@@ -6526,7 +6529,7 @@ ngx_http_qjs_ext_parent(JSContext *cx, JSValueConst this_val)
 
     r = ngx_http_qjs_request(this_val);
     if (r == NULL) {
-        return JS_ThrowInternalError(cx, "\"this\" is not a request object");
+        return JS_ThrowTypeError(cx, "\"this\" is not a request object");
     }
 
     ctx = r->parent ? ngx_http_get_module_ctx(r->parent, ngx_http_js_module)
@@ -6548,7 +6551,7 @@ ngx_http_qjs_ext_remote_address(JSContext *cx, JSValueConst this_val)
 
     r = ngx_http_qjs_request(this_val);
     if (r == NULL) {
-        return JS_ThrowInternalError(cx, "\"this\" is not a request object");
+        return JS_ThrowTypeError(cx, "\"this\" is not a request object");
     }
 
     c = r->connection;
@@ -6570,7 +6573,7 @@ ngx_http_qjs_ext_response_body(JSContext *cx, JSValueConst this_val, int type)
 
     req = JS_GetOpaque(this_val, NGX_QJS_CLASS_ID_HTTP_REQUEST);
     if (req == NULL) {
-        return JS_ThrowInternalError(cx, "\"this\" is not a request object");
+        return JS_ThrowTypeError(cx, "\"this\" is not a request object");
     }
 
     buffer_type = ngx_js_buffer_type(type);
@@ -6622,7 +6625,7 @@ ngx_http_qjs_ext_request_body(JSContext *cx, JSValueConst this_val, int type)
 
     req = JS_GetOpaque(this_val, NGX_QJS_CLASS_ID_HTTP_REQUEST);
     if (req == NULL) {
-        return JS_ThrowInternalError(cx, "\"this\" is not a request object");
+        return JS_ThrowTypeError(cx, "\"this\" is not a request object");
     }
 
     buffer_type = ngx_js_buffer_type(type);
@@ -6753,7 +6756,7 @@ ngx_http_qjs_ext_read_request_body(JSContext *cx, JSValueConst this_val,
 
     req = JS_GetOpaque(this_val, NGX_QJS_CLASS_ID_HTTP_REQUEST);
     if (req == NULL) {
-        return JS_ThrowInternalError(cx, "\"this\" is not a request object");
+        return JS_ThrowTypeError(cx, "\"this\" is not a request object");
     }
 
     r = req->request;
@@ -6764,7 +6767,7 @@ ngx_http_qjs_ext_read_request_body(JSContext *cx, JSValueConst this_val,
     }
 
     if (ctx->body_read_event) {
-        return JS_ThrowInternalError(cx, "request body is already being read");
+        return JS_ThrowTypeError(cx, "request body is already being read");
     }
 
     event = ngx_pcalloc(r->pool, sizeof(ngx_qjs_event_t) + sizeof(JSValue) * 2);
@@ -6795,7 +6798,7 @@ ngx_http_qjs_ext_read_request_body(JSContext *cx, JSValueConst this_val,
 resolve:
 
     if (ngx_http_js_collect_body(r, ctx) != NGX_OK) {
-        return JS_ThrowOutOfMemory(cx);
+        return JS_ThrowInternalError(cx, "failed to read request body");
     }
 
     return ngx_http_qjs_body_to_value(cx, ctx, (ngx_uint_t) magic);
@@ -6882,7 +6885,7 @@ ngx_http_qjs_form_to_value(JSContext *cx, ngx_http_request_t *r,
     }
 
     if (rc == NGX_JS_FORM_PARSE_ERROR) {
-        return JS_ThrowInternalError(cx, "%.*s", (int) error.len, error.data);
+        return JS_ThrowTypeError(cx, "%.*s", (int) error.len, error.data);
     }
 
     return JS_ThrowOutOfMemory(cx);
@@ -6902,7 +6905,7 @@ ngx_http_qjs_ext_read_request_form(JSContext *cx, JSValueConst this_val,
 
     req = JS_GetOpaque(this_val, NGX_QJS_CLASS_ID_HTTP_REQUEST);
     if (req == NULL) {
-        return JS_ThrowInternalError(cx, "\"this\" is not a request object");
+        return JS_ThrowTypeError(cx, "\"this\" is not a request object");
     }
 
     if (ngx_http_qjs_request_form_max_keys(cx, argv[0], &max_keys) != NGX_OK) {
@@ -6917,7 +6920,7 @@ ngx_http_qjs_ext_read_request_form(JSContext *cx, JSValueConst this_val,
     }
 
     if (ctx->body_read_event) {
-        return JS_ThrowInternalError(cx, "request body is already being read");
+        return JS_ThrowTypeError(cx, "request body is already being read");
     }
 
     event = ngx_pcalloc(r->pool, sizeof(ngx_qjs_event_t) + sizeof(JSValue) * 2);
@@ -6949,7 +6952,7 @@ ngx_http_qjs_ext_read_request_form(JSContext *cx, JSValueConst this_val,
 resolve:
 
     if (ngx_http_js_collect_body(r, ctx) != NGX_OK) {
-        return JS_ThrowOutOfMemory(cx);
+        return JS_ThrowInternalError(cx, "failed to read request body");
     }
 
     return ngx_http_qjs_form_to_value(cx, r, ctx, max_keys);
@@ -6969,7 +6972,7 @@ ngx_http_qjs_ext_request_form_get(JSContext *cx, JSValueConst this_val,
 
     form = JS_GetOpaque(this_val, NGX_QJS_CLASS_ID_HTTP_FORM);
     if (form == NULL) {
-        return JS_ThrowInternalError(cx, "\"this\" is not a RequestForm");
+        return JS_ThrowTypeError(cx, "\"this\" is not a RequestForm");
     }
 
     name = JS_ToCStringLen(cx, &name_len, argv[0]);
@@ -7042,7 +7045,7 @@ ngx_http_qjs_ext_request_form_has(JSContext *cx, JSValueConst this_val,
 
     form = JS_GetOpaque(this_val, NGX_QJS_CLASS_ID_HTTP_FORM);
     if (form == NULL) {
-        return JS_ThrowInternalError(cx, "\"this\" is not a RequestForm");
+        return JS_ThrowTypeError(cx, "\"this\" is not a RequestForm");
     }
 
     name = JS_ToCStringLen(cx, &name_len, argv[0]);
@@ -7078,7 +7081,7 @@ ngx_http_qjs_ext_request_form_for_each(JSContext *cx, JSValueConst this_val,
 
     form = JS_GetOpaque(this_val, NGX_QJS_CLASS_ID_HTTP_FORM);
     if (form == NULL) {
-        return JS_ThrowInternalError(cx, "\"this\" is not a RequestForm");
+        return JS_ThrowTypeError(cx, "\"this\" is not a RequestForm");
     }
 
     if (!JS_IsFunction(cx, argv[0])) {
@@ -7157,7 +7160,7 @@ ngx_http_qjs_ext_request_form_has_files(JSContext *cx, JSValueConst this_val,
 
     form = JS_GetOpaque(this_val, NGX_QJS_CLASS_ID_HTTP_FORM);
     if (form == NULL) {
-        return JS_ThrowInternalError(cx, "\"this\" is not a RequestForm");
+        return JS_ThrowTypeError(cx, "\"this\" is not a RequestForm");
     }
 
     return JS_NewBool(cx, form->has_files);
@@ -7189,7 +7192,7 @@ ngx_http_qjs_ext_return(JSContext *cx, JSValueConst this_val,
 
     r = ngx_http_qjs_request(this_val);
     if (r == NULL) {
-        return JS_ThrowInternalError(cx, "\"this\" is not a request object");
+        return JS_ThrowTypeError(cx, "\"this\" is not a request object");
     }
 
     if (ngx_qjs_integer(cx, argv[0], &status) != NGX_OK) {
@@ -7217,7 +7220,7 @@ ngx_http_qjs_ext_return(JSContext *cx, JSValueConst this_val,
         ctx->status = ngx_http_send_response(r, status, NULL, &cv);
 
         if (ctx->status == NGX_ERROR) {
-            return JS_ThrowTypeError(cx, "failed to send response");
+            return JS_ThrowInternalError(cx, "failed to send response");
         }
 
     } else {
@@ -7237,7 +7240,7 @@ ngx_http_qjs_ext_decline(JSContext *cx, JSValueConst this_val,
 
     r = ngx_http_qjs_request(this_val);
     if (r == NULL) {
-        return JS_ThrowInternalError(cx, "\"this\" is not a request object");
+        return JS_ThrowTypeError(cx, "\"this\" is not a request object");
     }
 
     ctx = ngx_http_get_module_ctx(r, ngx_http_js_module);
@@ -7255,7 +7258,7 @@ ngx_http_qjs_ext_status_get(JSContext *cx, JSValueConst this_val)
 
     r = ngx_http_qjs_request(this_val);
     if (r == NULL) {
-        return JS_ThrowInternalError(cx, "\"this\" is not a request object");
+        return JS_ThrowTypeError(cx, "\"this\" is not a request object");
     }
 
     return JS_NewInt32(cx, r->headers_out.status);
@@ -7271,7 +7274,7 @@ ngx_http_qjs_ext_status_set(JSContext *cx, JSValueConst this_val,
 
     r = ngx_http_qjs_request(this_val);
     if (r == NULL) {
-        return JS_ThrowInternalError(cx, "\"this\" is not a request object");
+        return JS_ThrowTypeError(cx, "\"this\" is not a request object");
     }
 
     if (ngx_qjs_integer(cx, value, &n) != NGX_OK) {
@@ -7293,7 +7296,7 @@ ngx_http_qjs_ext_string(JSContext *cx, JSValueConst this_val, int offset)
 
     r = ngx_http_qjs_request(this_val);
     if (r == NULL) {
-        return JS_ThrowInternalError(cx, "\"this\" is not a request object");
+        return JS_ThrowTypeError(cx, "\"this\" is not a request object");
     }
 
     field = (ngx_str_t *) ((u_char *) r + offset);
@@ -7315,7 +7318,7 @@ ngx_http_qjs_ext_send(JSContext *cx, JSValueConst this_val,
 
     r = ngx_http_qjs_request(this_val);
     if (r == NULL) {
-        return JS_ThrowInternalError(cx, "\"this\" is not a request object");
+        return JS_ThrowTypeError(cx, "\"this\" is not a request object");
     }
 
     ctx = ngx_http_get_module_ctx(r, ngx_http_js_module);
@@ -7338,7 +7341,7 @@ ngx_http_qjs_ext_send(JSContext *cx, JSValueConst this_val,
 
         b = ngx_calloc_buf(r->pool);
         if (b == NULL) {
-            return JS_ThrowInternalError(cx, "failed to allocate buffer");
+            return JS_ThrowOutOfMemory(cx);
         }
 
         b->start = s.data;
@@ -7349,7 +7352,7 @@ ngx_http_qjs_ext_send(JSContext *cx, JSValueConst this_val,
 
         cl = ngx_alloc_chain_link(r->pool);
         if (cl == NULL) {
-            return JS_ThrowInternalError(cx, "failed to allocate chain link");
+            return JS_ThrowOutOfMemory(cx);
         }
 
         cl->buf = b;
@@ -7384,7 +7387,7 @@ ngx_http_qjs_ext_send_buffer(JSContext *cx, JSValueConst this_val,
 
     r = ngx_http_qjs_request(this_val);
     if (r == NULL) {
-        return JS_ThrowInternalError(cx, "\"this\" is not a request object");
+        return JS_ThrowTypeError(cx, "\"this\" is not a request object");
     }
 
     ctx = ngx_http_get_module_ctx(r, ngx_http_js_module);
@@ -7527,7 +7530,7 @@ ngx_http_qjs_ext_send_header(JSContext *cx, JSValueConst this_val,
 
     r = ngx_http_qjs_request(this_val);
     if (r == NULL) {
-        return JS_ThrowInternalError(cx, "\"this\" is not a request object");
+        return JS_ThrowTypeError(cx, "\"this\" is not a request object");
     }
 
     if (ngx_http_set_content_type(r) != NGX_OK) {
@@ -7553,7 +7556,7 @@ ngx_http_qjs_ext_set_return_value(JSContext *cx, JSValueConst this_val,
 
     r = ngx_http_qjs_request(this_val);
     if (r == NULL) {
-        return JS_ThrowInternalError(cx, "\"this\" is not a request object");
+        return JS_ThrowTypeError(cx, "\"this\" is not a request object");
     }
 
     ctx = ngx_http_get_module_ctx(r, ngx_http_js_module);
@@ -7660,7 +7663,7 @@ ngx_http_qjs_ext_subrequest(JSContext *cx, JSValueConst this_val,
 
     r = ngx_http_qjs_request(this_val);
     if (r == NULL) {
-        return JS_ThrowInternalError(cx, "\"this\" is not a request object");
+        return JS_ThrowTypeError(cx, "\"this\" is not a request object");
     }
 
     ctx = ngx_http_get_module_ctx(r, ngx_http_js_module);
@@ -7920,7 +7923,7 @@ ngx_http_qjs_ext_raw_headers(JSContext *cx, JSValueConst this_val, int out)
 
     r = ngx_http_qjs_request(this_val);
     if (r == NULL) {
-        return JS_ThrowInternalError(cx, "\"this\" is not a request object");
+        return JS_ThrowTypeError(cx, "\"this\" is not a request object");
     }
 
     headers = (out) ? &r->headers_out.headers : &r->headers_in.headers;
@@ -8003,7 +8006,7 @@ ngx_http_qjs_ext_variables(JSContext *cx, JSValueConst this_val, int type)
 
     r = ngx_http_qjs_request(this_val);
     if (r == NULL) {
-        return JS_ThrowInternalError(cx, "\"this\" is not a request object");
+        return JS_ThrowTypeError(cx, "\"this\" is not a request object");
     }
 
     obj = JS_NewObjectProtoClass(cx, JS_NULL, NGX_QJS_CLASS_ID_HTTP_VARS);
@@ -8033,7 +8036,7 @@ ngx_http_qjs_ext_js_var_names(JSContext *cx, JSValueConst this_val, int argc,
 
     r = ngx_http_qjs_request(this_val);
     if (r == NULL) {
-        return JS_ThrowInternalError(cx, "\"this\" is not a request object");
+        return JS_ThrowTypeError(cx, "\"this\" is not a request object");
     }
 
     prefix = NULL;
@@ -8110,7 +8113,7 @@ ngx_http_qjs_variables_own_property(JSContext *cx, JSPropertyDescriptor *pdesc,
     r = (ngx_http_request_t *) ((uintptr_t) r & ~(uintptr_t) 1);
 
     if (r == NULL) {
-        (void) JS_ThrowInternalError(cx, "\"this\" is not a request object");
+        (void) JS_ThrowTypeError(cx, "\"this\" is not a request object");
         return -1;
     }
 
@@ -8204,7 +8207,7 @@ ngx_http_qjs_variables_set_property(JSContext *cx, JSValueConst obj,
     r = (ngx_http_request_t *) ((uintptr_t) r & ~(uintptr_t) 1);
 
     if (r == NULL) {
-        (void) JS_ThrowInternalError(cx, "\"this\" is not a request object");
+        (void) JS_ThrowTypeError(cx, "\"this\" is not a request object");
         return -1;
     }
 
@@ -8235,7 +8238,7 @@ ngx_http_qjs_variables_set_property(JSContext *cx, JSValueConst obj,
     JS_FreeCString(cx, (char *) name.data);
 
     if (v == NULL) {
-        (void) JS_ThrowInternalError(cx, "variable not found");
+        (void) JS_ThrowTypeError(cx, "variable not found");
         return -1;
     }
 
@@ -8339,7 +8342,7 @@ ngx_http_qjs_headers_in_own_property_names(JSContext *cx,
 
     r = JS_GetOpaque(obj, NGX_QJS_CLASS_ID_HTTP_HEADERS_IN);
     if (r == NULL) {
-        (void) JS_ThrowInternalError(cx, "\"this\" is not a headers_in object");
+        (void) JS_ThrowTypeError(cx, "\"this\" is not a headers_in object");
         return -1;
     }
 
@@ -8547,7 +8550,7 @@ ngx_http_qjs_headers_in_own_property(JSContext *cx, JSPropertyDescriptor *pdesc,
 
     r = JS_GetOpaque(obj, NGX_QJS_CLASS_ID_HTTP_HEADERS_IN);
     if (r == NULL) {
-        (void) JS_ThrowInternalError(cx, "\"this\" is not a headers_in object");
+        (void) JS_ThrowTypeError(cx, "\"this\" is not a headers_in object");
         return -1;
     }
 
@@ -8587,8 +8590,7 @@ ngx_http_qjs_headers_out_own_property_names(JSContext *cx,
 
     r = JS_GetOpaque(obj, NGX_QJS_CLASS_ID_HTTP_HEADERS_OUT);
     if (r == NULL) {
-        (void) JS_ThrowInternalError(cx, "\"this\" is not a headers_out"
-                                     " object");
+        (void) JS_ThrowTypeError(cx, "\"this\" is not a headers_out object");
         return -1;
     }
 
@@ -8957,8 +8959,8 @@ ngx_http_qjs_headers_out_content_length(JSContext *cx, ngx_http_request_t *r,
             n = ngx_atoi(h->value.data, h->value.len);
             if (n == NGX_ERROR) {
                 h->hash = 0;
-                (void) JS_ThrowInternalError(cx, "failed converting argument "
-                                             "to positive integer");
+                (void) JS_ThrowTypeError(cx, "failed converting argument "
+                                         "to positive integer");
                 return -1;
             }
 
@@ -9193,8 +9195,7 @@ ngx_http_qjs_headers_out_own_property(JSContext *cx,
 
     r = JS_GetOpaque(obj, NGX_QJS_CLASS_ID_HTTP_HEADERS_OUT);
     if (r == NULL) {
-        (void) JS_ThrowInternalError(cx, "\"this\" is not a headers_out"
-                                     " object");
+        (void) JS_ThrowTypeError(cx, "\"this\" is not a headers_out object");
         return -1;
     }
 
@@ -9233,8 +9234,7 @@ ngx_http_qjs_headers_out_define_own_property(JSContext *cx,
 
     r = JS_GetOpaque(obj, NGX_QJS_CLASS_ID_HTTP_HEADERS_OUT);
     if (r == NULL) {
-        (void) JS_ThrowInternalError(cx, "\"this\" is not a headers_out"
-                                     " object");
+        (void) JS_ThrowTypeError(cx, "\"this\" is not a headers_out object");
         return -1;
     }
 
@@ -9273,8 +9273,7 @@ ngx_http_qjs_headers_out_delete_property(JSContext *cx,
 
     r = JS_GetOpaque(obj, NGX_QJS_CLASS_ID_HTTP_HEADERS_OUT);
     if (r == NULL) {
-        (void) JS_ThrowInternalError(cx, "\"this\" is not a headers_out"
-                                     " object");
+        (void) JS_ThrowTypeError(cx, "\"this\" is not a headers_out object");
         return -1;
     }
 
diff --git a/nginx/t/js_access_body.t b/nginx/t/js_access_body.t
index abe53b39..89f5cfad 100644
--- a/nginx/t/js_access_body.t
+++ b/nginx/t/js_access_body.t
@@ -219,7 +219,7 @@ $t->write_file('test.js', <<EOF);
             r.variables.foo = 'no_error';
 
         } catch (e) {
-            r.variables.foo = e.message;
+            r.variables.foo = e.constructor.name + ':' + e.message;
         }
     }
 
@@ -280,7 +280,7 @@ like(http_post('/buffer_twice'), qr/var:same/,
 like(http_post('/text_then_buffer'), qr/var:same/,
 	'readRequestText then readRequestArrayBuffer same content');
 like(http_post('/concurrent_text_buffer'),
-	qr/var:request body is already being read/,
+	qr/var:TypeError:request body is already being read/,
 	'concurrent body read throws error');
 
 like(http_post_big('/big'), qr/var:10240/,
diff --git a/nginx/t/js_headers.t b/nginx/t/js_headers.t
index 8030a4fd..7cf91099 100644
--- a/nginx/t/js_headers.t
+++ b/nginx/t/js_headers.t
@@ -62,6 +62,10 @@ http {
             js_content test.content_length_keys;
         }
 
+        location /content_length_error {
+            js_content test.content_length_error;
+        }
+
         location /content_type {
             charset windows-1251;
 
@@ -217,6 +221,16 @@ $t->write_file('test.js', <<EOF);
         r.return(200, `B:\${in_keys}`);
     }
 
+    function content_length_error(r) {
+        try {
+            r.headersOut['Content-Length'] = 'x';
+            r.return(200, 'no_error');
+
+        } catch (e) {
+            r.return(500, `\${e.constructor.name}:\${e.message}`);
+        }
+    }
+
     function content_type(r) {
         if (njs.version_number >= 0x000705) {
             var ctype = r.headersOut['Content-Type'];
@@ -470,7 +484,8 @@ $t->write_file('test.js', <<EOF);
     }
 
     export default {njs:test_njs, content_length, content_length_arr,
-                    content_length_keys, content_type, content_type_arr,
+                    content_length_keys, content_length_error,
+                    content_type, content_type_arr,
                     content_encoding, content_encoding_arr, headers_list,
                     hdr_in, raw_hdr_in, hdr_sorted_keys, foo_in, ifoo_in,
                     hdr_out, raw_hdr_out, hdr_out_array, hdr_out_single,
@@ -481,7 +496,7 @@ $t->write_file('test.js', <<EOF);
 
 EOF
 
-$t->try_run('no njs')->plan(50);
+$t->try_run('no njs')->plan(51);
 
 ###############################################################################
 
@@ -506,6 +521,9 @@ unlike(http_get('/hdr_out?foo'), qr/Foo:/, 'r.headersOut no value 2');
 like(http_get('/content_length_keys'), qr/B:true/, 'Content-Length in keys');
 like(http_get('/content_length_arr'), qr/Content-Length: 3/,
 	'set Content-Length arr');
+like(http_get('/content_length_error'),
+	qr/500.*TypeError:failed converting argument to positive integer/s,
+	'set invalid Content-Length');
 
 like(http_get('/content_type'), qr/B:true/, 'Content-Type in keys');
 like(http_get('/content_type_arr'), qr/Content-Type: text\/html/,
diff --git a/nginx/t/js_request_form.t b/nginx/t/js_request_form.t
index a469a8ff..e0ab60d6 100644
--- a/nginx/t/js_request_form.t
+++ b/nginx/t/js_request_form.t
@@ -208,7 +208,7 @@ $t->write_file('test.js', <<'EOF');
             r.return(200, 'no_error');
 
         } catch (e) {
-            r.return(500, e.message);
+            r.return(500, `${e.constructor.name}:${e.message}`);
         }
     }
 
@@ -375,19 +375,19 @@ unlike(http_post_form('/content_form', $fake_boundary),
     'fake multipart boundary does not restart header parsing');
 
 like(http_post_form('/content_form_error', urlencoded_form('a=%')),
-    qr/500.*malformed percent escape/s,
+    qr/500.*TypeError:malformed percent escape/s,
     'urlencoded bare % at end is rejected');
 
 like(http_post_form('/content_form_error', urlencoded_form('a=%4')),
-    qr/500.*malformed percent escape/s,
+    qr/500.*TypeError:malformed percent escape/s,
     'urlencoded %X with missing second digit is rejected');
 
 like(http_post_form('/content_form_error', urlencoded_form('a=%gg')),
-    qr/500.*malformed percent escape/s,
+    qr/500.*TypeError:malformed percent escape/s,
     'urlencoded non-hex percent escape is rejected');
 
 like(http_post_form('/content_form_error', urlencoded_form('%Z=1')),
-    qr/500.*malformed percent escape/s,
+    qr/500.*TypeError:malformed percent escape/s,
     'urlencoded malformed percent escape in name is rejected');
 
 like(http_post_form('/content_form_error', ['text/plain', 'a=1']),
@@ -404,7 +404,7 @@ like(http_post_raw('/content_form_error', 'a=1'),
 
 like(http_post_form('/content_form_error',
     ['application/x-www-form-urlencoded; =x', 'a=1']),
-    qr/500.*malformed parameter/s,
+    qr/500.*TypeError:malformed parameter/s,
     'malformed content type parameter is rejected');
 
 like(http_post_form('/content_form_error', ['multipart/form-data', 'a=1']),
@@ -413,39 +413,39 @@ like(http_post_form('/content_form_error', ['multipart/form-data', 'a=1']),
 
 like(http_post_form('/content_form_error',
     ['multipart/form-data; boundary=""', '']),
-    qr/500.*(invalid multipart boundary|empty parameter value)/s,
+    qr/500.*TypeError:(invalid multipart boundary|empty parameter value)/s,
     'empty quoted multipart boundary is rejected');
 
 like(http_post_form('/content_form_error',
     ["multipart/form-data; boundary=" . 'x' x 201, '']),
-    qr/500.*invalid multipart boundary/s,
+    qr/500.*TypeError:invalid multipart boundary/s,
     'multipart boundary over 200 bytes is rejected');
 
 like(http_post_form('/content_form_error',
     ['multipart/form-data; boundary=X; boundary=Y', '--X--']),
-    qr/500.*duplicate boundary parameter/s,
+    qr/500.*TypeError:duplicate boundary parameter/s,
     'duplicate multipart boundary parameter is rejected');
 
 like(http_post_form('/content_form_error',
     ['multipart/form-data; boundary=X junk', '--X--']),
-    qr/500.*(malformed content type|malformed parameter)/s,
+    qr/500.*TypeError:(malformed content type|malformed parameter)/s,
     'malformed trailing content type parameter data is rejected');
 
 like(http_post_form('/content_form_error',
     ['multipart/form-data; boundary=XXX', '--XXXjunk']),
-    qr/500.*malformed multipart boundary/s,
+    qr/500.*TypeError:malformed multipart boundary/s,
     'multipart opening delimiter without CRLF is rejected');
 
 like(http_post_form('/content_form_error',
     ['multipart/form-data; boundary=XXX', '-']),
-    qr/500.*malformed multipart body/s,
+    qr/500.*TypeError:malformed multipart body/s,
     'short multipart body without boundary marker is rejected');
 
 like(http_post_form('/content_form_error',
     ['multipart/form-data; boundary=X',
      '--X' . CRLF
      . 'Content-Disposition: form-data; name="a"']),
-    qr/500.*missing multipart header separator/s,
+    qr/500.*TypeError:missing multipart header separator/s,
     'multipart part without header separator is rejected');
 
 like(http_post_form('/content_form_error',
@@ -454,7 +454,7 @@ like(http_post_form('/content_form_error',
      . 'X-Large: ' . ('a' x 17000) . CRLF . CRLF
      . 'data' . CRLF
      . '--X--']),
-    qr/500.*multipart headers are too large/s,
+    qr/500.*TypeError:multipart headers are too large/s,
     'multipart header block size limit is enforced');
 
 like(http_post_form('/content_form_error',
@@ -464,7 +464,7 @@ like(http_post_form('/content_form_error',
      . 'Content-Disposition: form-data; name="a"' . CRLF . CRLF
      . 'data' . CRLF
      . '--X--']),
-    qr/500.*multipart header line is too long/s,
+    qr/500.*TypeError:multipart header line is too long/s,
     'multipart header line size limit is enforced');
 
 my $many_headers = join('', map { "X-$_: v" . CRLF } 1 .. 33);
@@ -476,7 +476,7 @@ like(http_post_form('/content_form_error',
      . 'Content-Disposition: form-data; name="a"' . CRLF . CRLF
      . 'data' . CRLF
      . '--X--']),
-    qr/500.*too many multipart headers/s,
+    qr/500.*TypeError:too many multipart headers/s,
     'multipart header count limit is enforced');
 
 like(http_post_form('/content_form_error',
@@ -485,7 +485,7 @@ like(http_post_form('/content_form_error',
      . 'X-Other: foo' . CRLF . CRLF
      . 'data' . CRLF
      . '--X--']),
-    qr/500.*missing Content-Disposition header/s,
+    qr/500.*TypeError:missing Content-Disposition header/s,
     'multipart part without Content-Disposition is rejected');
 
 like(http_post_form('/content_form_error',
@@ -495,7 +495,7 @@ like(http_post_form('/content_form_error',
      . 'Content-Disposition: form-data; name="b"' . CRLF . CRLF
      . 'data' . CRLF
      . '--X--']),
-    qr/500.*duplicate Content-Disposition header/s,
+    qr/500.*TypeError:duplicate Content-Disposition header/s,
     'duplicate multipart Content-Disposition header is rejected');
 
 like(http_post_form('/content_form_error',
@@ -504,7 +504,7 @@ like(http_post_form('/content_form_error',
      . 'Content-Disposition: attachment; name="a"' . CRLF . CRLF
      . 'data' . CRLF
      . '--X--']),
-    qr/500.*unsupported disposition type/s,
+    qr/500.*TypeError:unsupported disposition type/s,
     'unsupported multipart disposition type is rejected');
 
 like(http_post_form('/content_form_error',
@@ -513,7 +513,7 @@ like(http_post_form('/content_form_error',
      . 'Content-Disposition: form-data' . CRLF . CRLF
      . 'data' . CRLF
      . '--X--']),
-    qr/500.*multipart field name is required/s,
+    qr/500.*TypeError:multipart field name is required/s,
     'multipart Content-Disposition without name is rejected');
 
 like(http_post_form('/content_form_error',
@@ -523,7 +523,7 @@ like(http_post_form('/content_form_error',
      . CRLF . CRLF
      . 'data' . CRLF
      . '--X--']),
-    qr/500.*malformed Content-Disposition/s,
+    qr/500.*TypeError:malformed Content-Disposition/s,
     'multipart Content-Disposition trailing data is rejected');
 
 like(http_post_form('/content_form_error',
@@ -533,7 +533,7 @@ like(http_post_form('/content_form_error',
      . CRLF . CRLF
      . 'data' . CRLF
      . '--X--']),
-    qr/500.*duplicate name parameter/s,
+    qr/500.*TypeError:duplicate name parameter/s,
     'duplicate multipart name parameter is rejected');
 
 like(http_post_form('/content_form_error',
@@ -543,7 +543,7 @@ like(http_post_form('/content_form_error',
      . 'filename="y"' . CRLF . CRLF
      . 'data' . CRLF
      . '--X--']),
-    qr/500.*duplicate filename parameter/s,
+    qr/500.*TypeError:duplicate filename parameter/s,
     'duplicate multipart filename parameter is rejected');
 
 like(http_post_form('/content_form_error',
@@ -552,7 +552,7 @@ like(http_post_form('/content_form_error',
      . 'Content-Disposition: form-data; name' . CRLF . CRLF
      . 'data' . CRLF
      . '--X--']),
-    qr/500.*malformed parameter/s,
+    qr/500.*TypeError:malformed parameter/s,
     'multipart parameter without equals is rejected');
 
 like(http_post_form('/content_form_error',
@@ -561,7 +561,7 @@ like(http_post_form('/content_form_error',
      . 'Content-Disposition: form-data; name=' . CRLF . CRLF
      . 'data' . CRLF
      . '--X--']),
-    qr/500.*empty parameter value/s,
+    qr/500.*TypeError:empty parameter value/s,
     'multipart parameter with empty unquoted value is rejected');
 
 like(http_post_form('/content_form_error',
@@ -571,7 +571,7 @@ like(http_post_form('/content_form_error',
      . CRLF . CRLF
      . 'data' . CRLF
      . '--X--']),
-    qr/500.*unterminated quoted parameter/s,
+    qr/500.*TypeError:unterminated quoted parameter/s,
     'multipart trailing backslash in quoted parameter is rejected');
 
 like(http_post_form('/content_form_error',
@@ -581,7 +581,7 @@ like(http_post_form('/content_form_error',
      . 'Content-Disposition: form-data; name="a"' . CRLF . CRLF
      . 'data' . CRLF
      . '--X--']),
-    qr/500.*malformed multipart header/s,
+    qr/500.*TypeError:malformed multipart header/s,
     'multipart header line without colon is rejected');
 
 like(http_post_form('/content_form_error',
@@ -590,12 +590,12 @@ like(http_post_form('/content_form_error',
      . 'Content-Disposition: form-data; name="a"' . CRLF . CRLF
      . 'data' . CRLF
      . '--Xjunk']),
-    qr/500.*malformed multipart boundary/s,
+    qr/500.*TypeError:malformed multipart boundary/s,
     'malformed multipart boundary after part is rejected');
 
 like(http_post_form('/content_form_error',
     ['multipart/form-data; boundary=XXX', 'no boundary here at all']),
-    qr/500.*malformed multipart body/s,
+    qr/500.*TypeError:malformed multipart body/s,
     'multipart body without boundary marker is rejected');
 
 like(http_post_form('/content_form_error',
@@ -603,11 +603,11 @@ like(http_post_form('/content_form_error',
      '--X' . CRLF
      . 'Content-Disposition: form-data; name="a"' . CRLF . CRLF
      . 'value with no terminating boundary']),
-    qr/500.*truncated multipart body/s,
+    qr/500.*TypeError:truncated multipart body/s,
     'multipart body without closing boundary is rejected');
 
 like(http_post_form('/content_form_limit', urlencoded_form('a=1&b=2')),
-    qr/500.*maxKeys limit exceeded/s, 'maxKeys limit breach rejects');
+    qr/500.*TypeError:maxKeys limit exceeded/s, 'maxKeys limit breach rejects');
 
 like(http_post_form('/content_form_limit', urlencoded_form('&a=1&&')),
     qr/200.*no_error/s, 'urlencoded empty fields do not count for maxKeys');
@@ -615,7 +615,7 @@ like(http_post_form('/content_form_limit', urlencoded_form('&a=1&&')),
 like(http_post_form('/content_form_limit',
     multipart_form({ name => 'a', value => '1' },
                    { name => 'b', value => '2' })),
-    qr/500.*maxKeys limit exceeded/s,
+    qr/500.*TypeError:maxKeys limit exceeded/s,
     'multipart maxKeys limit breach rejects');
 
 ###############################################################################
diff --git a/nginx/t/js_variables.t b/nginx/t/js_variables.t
index 6f1eb173..196b7af3 100644
--- a/nginx/t/js_variables.t
+++ b/nginx/t/js_variables.t
@@ -108,7 +108,8 @@ $t->try_run('no njs')->plan(5);
 
 like(http_get('/var_set?a=bar'), qr/test_varbar/, 'var set');
 like(http_get('/content_set?a=bar'), qr/bar/, 'content set');
-like(http_get('/not_found_set'), qr/variable not found/, 'not found exception');
+like(http_get('/not_found_set'), qr/TypeError: variable not found/,
+	'not found exception');
 like(http_get('/variable_lowkey'), qr/X{16}/,
 	'variable name is not overwritten while reading');
 like(http_get('/variable_lowkey?set=1'), qr/X{16}/,