The following line https://github.com/aelbore/esbuild-jest/blob/daa5847b3b382d9ddf6cc26e60ad949d202c4461/src/index.ts#L33 is pretty greedy with determining if Babel should be used for a transform or not. I have `lock()` functions in my code that match on this and then cause a transform error. Should this be changed to `sources.code.indexOf("mock(")`?