diff --git a/common.jest_config.ts b/common.jest_config.ts
index 79280aa9..ceee79d8 100644
--- a/common.jest_config.ts
+++ b/common.jest_config.ts
@@ -24,8 +24,9 @@ export function createConfig(testType: string, title: string): Config {
     displayName: title,
     modulePathIgnorePatterns: ["__tests__/__snapshots__/"],
     transform: { ".(ts)": "ts-jest" },
+    transformIgnorePatterns: [ "^.+\\.cjs$", "^.+\\.js$", "^.+\\.json$" ],
     testRegex: "(test|spec)\\.ts$",
-    moduleFileExtensions: ["ts", "js"],
+    moduleFileExtensions: ["ts", "js", "json"],
     testPathIgnorePatterns: ["<rootDir>/__tests__/__results__", `.*/__${isUnit ? "system" : "unit"}__/.*`],
     testEnvironment: "node",
     collectCoverage: isUnit,