2 files changed, 24 insertions, 3 deletions
diff --git a/platform/javascript/export/export_plugin.cpp b/platform/javascript/export/export_plugin.cpp
index b99f88d067..0bdee11018 100644
--- a/platform/javascript/export/export_plugin.cpp
+++ b/platform/javascript/export/export_plugin.cpp
@@ -362,7 +362,7 @@ Ref<Texture2D> EditorExportPlatformJavaScript::get_logo() const {
 	return logo;
 }
 
-bool EditorExportPlatformJavaScript::can_export(const Ref<EditorExportPreset> &p_preset, String &r_error, bool &r_missing_templates) const {
+bool EditorExportPlatformJavaScript::has_valid_export_configuration(const Ref<EditorExportPreset> &p_preset, String &r_error, bool &r_missing_templates) const {
 #ifndef DEV_ENABLED
 	// We don't provide export templates for the HTML5 platform currently as there
 	// is no suitable renderer to use with them. So we forbid exporting and tell
@@ -396,7 +396,27 @@ bool EditorExportPlatformJavaScript::can_export(const Ref<EditorExportPreset> &p
 	valid = dvalid || rvalid;
 	r_missing_templates = !valid;
 
-	// Validate the rest of the configuration.
+	if (!err.is_empty()) {
+		r_error = err;
+	}
+
+	return valid;
+}
+
+bool EditorExportPlatformJavaScript::has_valid_project_configuration(const Ref<EditorExportPreset> &p_preset, String &r_error) const {
+#ifndef DEV_ENABLED
+	// We don't provide export templates for the HTML5 platform currently as there
+	// is no suitable renderer to use with them. So we forbid exporting and tell
+	// users why. This is skipped in DEV_ENABLED so that contributors can still test
+	// the pipeline once we start having WebGL or WebGPU support.
+	r_error = "The HTML5 platform is currently not supported in Godot 4.0, as there is no suitable renderer for it.\n";
+	return false;
+#endif
+
+	String err;
+	bool valid = true;
+
+	// Validate the project configuration.
 
 	if (p_preset->get("vram_texture_compression/for_mobile")) {
 		String etc_error = test_etc2();
diff --git a/platform/javascript/export/export_plugin.h b/platform/javascript/export/export_plugin.h
index fbaa3615cb..16bab02d54 100644
--- a/platform/javascript/export/export_plugin.h
+++ b/platform/javascript/export/export_plugin.h
@@ -118,7 +118,8 @@ public:
 	virtual String get_os_name() const override;
 	virtual Ref<Texture2D> get_logo() const override;
 
-	virtual bool can_export(const Ref<EditorExportPreset> &p_preset, String &r_error, bool &r_missing_templates) const override;
+	virtual bool has_valid_export_configuration(const Ref<EditorExportPreset> &p_preset, String &r_error, bool &r_missing_templates) const override;
+	virtual bool has_valid_project_configuration(const Ref<EditorExportPreset> &p_preset, String &r_error) const override;
 	virtual List<String> get_binary_extensions(const Ref<EditorExportPreset> &p_preset) const override;
 	virtual Error export_project(const Ref<EditorExportPreset> &p_preset, bool p_debug, const String &p_path, int p_flags = 0) override;