diff --git a/tested/languages/typescript/config.py b/tested/languages/typescript/config.py
index d5e9831f..ee9ad819 100644
--- a/tested/languages/typescript/config.py
+++ b/tested/languages/typescript/config.py
@@ -128,7 +128,7 @@ def modify_solution(self, solution: Path):
             solution.parent,
             timeout=None,
             command=["tsx", parse_file, str(solution.absolute())],
-            check=False,
+            check=True,
         )
         assert output, "Missing output from TypesScript's modify_solution"
         namings = output.stdout.strip()
diff --git a/tests/exercises/echo-function-additional-source-files/solution/correct.ts b/tests/exercises/echo-function-additional-source-files/solution/correct.ts
index 40bad740..cd443043 100644
--- a/tests/exercises/echo-function-additional-source-files/solution/correct.ts
+++ b/tests/exercises/echo-function-additional-source-files/solution/correct.ts
@@ -1,4 +1,4 @@
-const e = require("./echo.ts");
+import * as e from "./echo.ts";
 
 function echo(content) {
     return e.echo(content);
diff --git a/tests/exercises/echo-function-additional-source-files/workdir/echo.ts b/tests/exercises/echo-function-additional-source-files/workdir/echo.ts
index 3bb749dc..f8f72077 100644
--- a/tests/exercises/echo-function-additional-source-files/workdir/echo.ts
+++ b/tests/exercises/echo-function-additional-source-files/workdir/echo.ts
@@ -2,4 +2,4 @@ function echo(content) {
     return content;
 }
 
-module.exports = { echo };
+export { echo };
diff --git a/tests/exercises/echo-function-file-input/solution/correct.ts b/tests/exercises/echo-function-file-input/solution/correct.ts
index 87e768a3..b9added1 100644
--- a/tests/exercises/echo-function-file-input/solution/correct.ts
+++ b/tests/exercises/echo-function-file-input/solution/correct.ts
@@ -1,4 +1,4 @@
-const fs = require('fs');
+import * as fs from 'fs';
 
 function echoFile(content) {
     return fs.readFileSync(content, {encoding:'utf8', flag:'r'}).trim();
diff --git a/tests/exercises/echo-function-file-output/solution/correct.ts b/tests/exercises/echo-function-file-output/solution/correct.ts
index da5cfb3d..e7bacf3d 100644
--- a/tests/exercises/echo-function-file-output/solution/correct.ts
+++ b/tests/exercises/echo-function-file-output/solution/correct.ts
@@ -1,4 +1,4 @@
-const fs = require('fs');
+import * as fs from 'fs';
 
 function echoFunction(filename, stringToWrite) {
     fs.writeFileSync(filename, stringToWrite + '\n', { flag: 'w' });
diff --git a/tests/exercises/isbn/evaluation/one-with-crashing-assignment-typescript.tson b/tests/exercises/isbn/evaluation/one-with-crashing-assignment-typescript.tson
index 09f8546d..35c7d006 100644
--- a/tests/exercises/isbn/evaluation/one-with-crashing-assignment-typescript.tson
+++ b/tests/exercises/isbn/evaluation/one-with-crashing-assignment-typescript.tson
@@ -7,8 +7,8 @@
           "contexts": [
             {
               "before": {
-                "java": {
-                  "data": "Supplier<List<Object>> ex = () -> {throw new AssertionError();};"
+                "typescript": {
+                  "data": "const ex: () => Array<any> = () => {throw new Error("AssertionError");};"
                 }
               },
               "testcases": [
diff --git a/tests/test_linters.py b/tests/test_linters.py
index 00db95ec..3497d84b 100644
--- a/tests/test_linters.py
+++ b/tests/test_linters.py
@@ -56,6 +56,7 @@ def test_eslint(tmp_path: Path, config: dict, pytestconfig: pytest.Config):
         config,
     )
     result = execute_config(conf)
+    print(conf)
     updates = assert_valid_output(result, pytestconfig)
     assert len(updates.find_all("annotate-code")) > 0
 
diff --git a/tsconfig.json b/tsconfig.json
deleted file mode 100644
index ed93465f..00000000
--- a/tsconfig.json
+++ /dev/null
@@ -1,15 +0,0 @@
-{
-  "extends": "ts-node/node16/tsconfig.json",
-  "compilerOptions" : {
-    "esModuleInterop" : true,
-    "module" : "ESNext",
-    "moduleResolution" : "node",
-    "allowImportingTsExtensions" : true,
-    "types" : ["node"],
-  },
-  "ts-node" : {
-    "esm" : true,
-    "transpileOnly": true,
-    "experimentalSpecifierResolution" : "node"
-  }
-}