Typescript via react-scripts

[MikelArnaiz]

This PR removes react-scripts-ts and adds typescript support with the official react-scripts.

Besides

• Updates some dependencies to make it work
• Updates snapshots
• Fixes some compiling / type errors (but skips some others with any)

PS: if you have errors running the tests it is a [know NPM issue}(https://github.com/facebook/create-react-app/issues/5259).

Followed https://vincenttunru.com/migrate-create-react-app-typescript-to-create-react-app/

Update

For the same npm issue described above, Travis was not passing, therefore this PR will ensure that you use Yarn for package manager

[mvdam]

Nice job! We will fix the anys later 👍 Good to see the fork go!

[mvdam]

🎉

[mvdam]

👍

[mdvanes]

"use"

[mdvanes]

I do want to note I am getting this runtime error:

index.js:1452 Warning: Material-UI: you are using the deprecated typography variants that will be removed in the next major release.
Please read the migration guide under https://material-ui.com/style/typography#migration-to-typography-v2
function.console.(anonymous function) @ index.js:1452
printWarning @ warning.js:34
warning @ warning.js:58
createTypography @ createTypography.js:55
createMuiTheme @ createMuiTheme.js:66
./src/codestarMuiTheme.js @ codestarMuiTheme.js:3
__webpack_require__ @ bootstrap:787
fn @ bootstrap:150
./src/App.jsx @ index.css:8
__webpack_require__ @ bootstrap:787
fn @ bootstrap:150
./src/index.tsx @ index.css?02e3:45
__webpack_require__ @ bootstrap:787
fn @ bootstrap:150
0 @ registerServiceWorker.js:117
__webpack_require__ @ bootstrap:787
checkDeferredModules @ bootstrap:45
webpackJsonpCallback @ bootstrap:32
(anonymous) @ main.chunk.js:1
index.js:1452 Warning: Failed prop type: The `raised` variant will be removed in the next major release. `contained` is equivalent and should be used instead.
    in Button (created by WithStyles(Button)))

[mdvanes]

I am also getting an enormous amount of TS errors in the IDE, but not in the build: e.g. in About.tsx

TS7026: JSX element implicitly has type 'any' because no interface 'JSX.IntrinsicElements' exists.