[examples] Add missing typescript dependency

[quantuminformation]

Add missing local dependency

[pelotom]

This should technically go in devDependencies (and @types/react, @types/react-dom should be in dependencies).

changed

[oliviertassinari]

Something is off. I get warnings like this one trying to run the example.

[pelotom]

I think this is a yarn issue. Try removing yarn.lock and then yarn again from scratch.

[oliviertassinari]

Already tried. I will do it a second time.

[oliviertassinari]

Nop, doesn't help. Maybe it's my environment?

[pelotom]

What this means IIRC is that more than one version (15, 16) of @types/react-dom is being resolved somehow.

[oliviertassinari]

It could be a yarn cache issue on my end. As long as someone else can install it correctly, we are good to merge.

[oliviertassinari]

@pelotom Figured it out. It was indeed a duplicated typing definition. The Material-UI root node_modules are conflicting with the examples folder. It should no longer be an issue when once we use a multipackage folder structure.

[oliviertassinari]

@quantuminformation Thank you for this first time pull-request :).

[quantuminformation]

Happy to help!