Merge pull request #9 from emberjs/source-to-source

Source to source mode

Author: ef4

__tests__/mock-precompile.ts

@@ -1,3 +1,7 @@
 export function precompile(value: string) {
   return `precompiledFromPath(${value})`;
 }
+
+export function _preprocess(...args: unknown[]) {
+  return args;
+}