diff --git a/packages/blockly/core/blockly.ts b/packages/blockly/core/blockly.ts
index c1d49e0dfb6..4c242ae1174 100644
--- a/packages/blockly/core/blockly.ts
+++ b/packages/blockly/core/blockly.ts
@@ -426,6 +426,7 @@ Names.prototype.populateProcedures = function (
 };
 // clang-format on
 
+export * from './interfaces/i_json_block_definition.js';
 export * from './interfaces/i_navigation_policy.js';
 export * from './keyboard_nav/navigation_policies/block_navigation_policy.js';
 export * from './keyboard_nav/navigation_policies/bubble_navigation_policy.js';
diff --git a/packages/blockly/tests/typescript/src/field/json_block_custom_args.ts b/packages/blockly/tests/typescript/src/field/json_block_custom_args.ts
index 9cafdbdef8e..f84e4150338 100644
--- a/packages/blockly/tests/typescript/src/field/json_block_custom_args.ts
+++ b/packages/blockly/tests/typescript/src/field/json_block_custom_args.ts
@@ -4,8 +4,10 @@
  * SPDX-License-Identifier: Apache-2.0
  */
 
-import {defineBlocksWithJsonArray} from 'blockly-test/core';
-import type {JsonBlockDefinition} from 'blockly-test/core/interfaces/i_json_block_definition';
+import {
+  defineBlocksWithJsonArray,
+  type JsonBlockDefinition,
+} from 'blockly-test/core';
 
 import './different_user_input';