✅(tokens) mock default tokens in tests

If we don't do that we will have to update all tests each time the
default value of a token is changed.

packages/tokens/jest.config.ts

@@ -4,6 +4,15 @@ const jestConfig: JestConfigWithTsJest = {
   preset: "ts-jest",
   testEnvironment: "node",
   moduleDirectories: ["node_modules", "src/bin"],
+  setupFiles: ["<rootDir>/src/bin/tests/Setup.ts"],
+  transform: {
+    "^.+\\.tsx?$": [
+      "ts-jest",
+      // required due to custom location of tsconfig.json configuration file
+      // https://kulshekhar.github.io/ts-jest/docs/getting-started/options/tsconfig
+      { tsconfig: "./src/bin/tsconfig.json" },
+    ],
+  },
 };
 
 export default jestConfig;