Experiment to write jest tests for solid-app-router
The tests in mytest.test.tsx work, but the test in router.test.tsx fail due
to Syntax Error: the import statement in solid-app-router/dist/index.js is
not recognized.
As far as I can understand, that should be fixed as babel-jest should be
applied to solid-app-router as I excluded it from the ignore patterns using
transforMIgnorePatterns in jest.config.js. But it doesn't seem to have any
effect. In fact, if I disable transformIgnorePatterns so everything is
ignored in /node_modules, everything still works. The default solid-jest
preset includes for transform everything under solid-js, but it seems to have
no effect in making things work. I suspect it still works because
solid-js/web uses .cjs
To ensure maximum control I've deconstructed the presets babel-preset-solid
as well as solid-jest into this package.