--- a/src/libmlk-core-js/CMakeLists.txt	Fri Oct 22 13:28:23 2021 +0200
+++ b/src/libmlk-core-js/CMakeLists.txt	Fri Oct 22 13:57:24 2021 +0200
@@ -40,6 +40,8 @@
 	${libmlk-core-js_SOURCE_DIR}/core/js-painter.h
 	${libmlk-core-js_SOURCE_DIR}/core/js-panic.c
 	${libmlk-core-js_SOURCE_DIR}/core/js-panic.h
+	${libmlk-core-js_SOURCE_DIR}/core/js-trace.c
+	${libmlk-core-js_SOURCE_DIR}/core/js-trace.h
 	${libmlk-core-js_SOURCE_DIR}/core/js-sound.c
 	${libmlk-core-js_SOURCE_DIR}/core/js-sound.h
 	${libmlk-core-js_SOURCE_DIR}/core/js-sprite.c

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/libmlk-core-js/core/js-trace.c	Fri Oct 22 13:57:24 2021 +0200
@@ -0,0 +1,46 @@
+/*
+ * js-trace.c -- core trace binding
+ *
+ * Copyright (c) 2020-2021 David Demelier <markand@malikania.fr>
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#include <assert.h>
+
+#include <core/trace.h>
+
+#include "js-trace.h"
+
+static duk_ret_t
+Mlk_trace(duk_context *ctx)
+{
+	tracef("%s", duk_require_string(ctx, 0));
+
+	return 0;
+}
+
+static const duk_function_list_entry functions[] = {
+	{ "trace",              Mlk_trace,              1       },
+	{ NULL,                 NULL,                   0       }
+};
+
+void
+js_trace_bind(duk_context *ctx)
+{
+	assert(ctx);
+
+	duk_get_global_string(ctx, "Mlk");
+	duk_put_function_list(ctx, -1, functions);
+	duk_pop(ctx);
+}

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/libmlk-core-js/core/js-trace.h	Fri Oct 22 13:57:24 2021 +0200
@@ -0,0 +1,27 @@
+/*
+ * js-trace.h -- core trace binding
+ *
+ * Copyright (c) 2020-2021 David Demelier <markand@malikania.fr>
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#ifndef MLK_CORE_JS_TRACE_H
+#define MLK_CORE_JS_TRACE_H
+
+#include <duktape.h>
+
+void
+js_trace_bind(duk_context *);
+
+#endif /* !MLK_CORE_JS_TRACE_H */

--- a/src/mlk-run/main.c	Fri Oct 22 13:28:23 2021 +0200
+++ b/src/mlk-run/main.c	Fri Oct 22 13:57:24 2021 +0200
@@ -40,6 +40,7 @@
 #include <core/js-sprite.h>
 #include <core/js-state.h>
 #include <core/js-texture.h>
+#include <core/js-trace.h>
 #include <core/js-window.h>
 
 /* VFS loader to support zip and directories when loading game. */
@@ -75,6 +76,7 @@
 	js_sprite_bind(ctx);
 	js_state_bind(ctx);
 	js_texture_bind(ctx);
+	js_trace_bind(ctx);
 	js_window_bind(ctx);
 }