bugfix: make tsc invocation work on windows as well

Author: svandriel

test/utils/tsc.ts

@@ -1,8 +1,10 @@
 import util from "util";
 
-const exec = util.promisify(require('child_process').exec);
-const pathToTsc = `./node_modules/.bin/tsc`;
+const exec = util.promisify(require("child_process").exec);
 
 export async function typecheck(pathToIndex: string) {
-    await exec(`${pathToTsc} ${pathToIndex} --noEmit`);
+    const cmd = `tsc ${pathToIndex} --noEmit`;
+    await exec(cmd, {
+        env: process.env,
+    });
 }