feat: migrating flow to typescript (#47)

This PR convert the code base to Typescript, the changes are the following:

- migrate code base to Typescript (3.4.x)
- enable `eslint` and `@typescript-eslint/eslint-plugin` (warnings still need to be addressed in future pull request
- update relevant dependencies for this PR (linting, etc)
- enable `bundlezise` (it was disabled for some reason)

* refactor: refactoring to typescript

* refactor: migrating to typescript

* refactor: applied feedbacks

* fix: fixed conflicts

* refactored: changed registry

* refactor: updated registry & removed unnecessary lib

* fix: fixed registry ur

* fix: fixed page load

* refactor: refactored footer wip

* refactor: converting to ts..wip

* refactor: converting to ts. wip

* refactor: converting to ts. wip

* refactor: converting to ts

* refactor: converting to ts

* fix: fixed load errors

* refactor: converted files to ts

* refactor: removed flow from tests

* fix: removed transpiled files

* refactor: added ts-ignore

* fix: fixed errors

* fix: fixed types

* fix: fixing jest import -.-

* fix: fixing lint errors

* fix: fixing lint errors

* fix: fixed lint errors

* refactor: removed unnecessary tsconfig's config

* fix: fixing errors

* fix: fixed warning

* fix: fixed test

* refactor: wip

* refactor: wip

* refactor: wip

* fix: fixing tests: wip

* wip

* wip

* fix: fixed search test

* wip

* fix: fixing lint errors

* fix: re-added stylelint

* refactor: updated stylelint script

* fix: fixed: 'styles.js'  were found.

* fix: fixed Search tests

* chore: enable eslint

eslint needs expecitely to know which file has to lint, by default is JS, in this case we need also ts,tsx files eslint . --ext .js,.ts

* chore: vcode eslint settings

* chore: restore eslint previous conf

* chore: clean jest config

* chore: fix eslint warnings

* chore: eslint errors cleared

chore: clean warnings

chore: remove github actions test phases

chore: remove dupe rule

* chore: update handler name

* chore: restore logo from img to url css prop

- loading images with css is more performant than using img html tags, switching this might be a breaking change
- restore no-empty-source seems the linting do not accept false
- update snapshots
- remove @material-ui/styles

* chore: update stylelint linting

* chore: update stylelint linting

* chore: fix a mistake on move tabs to a function

* chore: eanble bundlezie

* chore: use default_executor in circleci

* chore: update readme

src/components/Help/Help.tsx

@@ -0,0 +1,46 @@
+import Button from '@material-ui/core/Button';
+import CardActions from '@material-ui/core/CardActions';
+import CardContent from '@material-ui/core/CardContent';
+import Typography from '@material-ui/core/Typography';
+import React, { Fragment } from 'react';
+
+import { getRegistryURL } from '../../utils/url';
+import CopyToClipBoard from '../CopyToClipBoard';
+
+import { CardStyled as Card, HelpTitle } from './styles';
+
+function renderHeadingClipboardSegments(title: string, text: string): React.ReactNode {
+  return (
+    <Fragment>
+      <Typography variant={'body2'}>{title}</Typography>
+      <CopyToClipBoard text={text} />
+    </Fragment>
+  );
+}
+
+const Help: React.FC = () => {
+  const registryUrl = getRegistryURL();
+
+  return (
+    <Card id="help-card">
+      <CardContent>
+        <Typography component="h2" gutterBottom={true} id="help-card__title" variant="headline">
+          {'No Package Published Yet.'}
+        </Typography>
+        <HelpTitle color="textSecondary" gutterBottom={true}>
+          {'To publish your first package just:'}
+        </HelpTitle>
+        {renderHeadingClipboardSegments('1. Login', `npm adduser --registry ${registryUrl}`)}
+        {renderHeadingClipboardSegments('2. Publish', `npm publish --registry ${registryUrl}`)}
+        <Typography variant="body2">{'3. Refresh this page.'}</Typography>
+      </CardContent>
+      <CardActions>
+        <Button color="primary" href="https://verdaccio.org/docs/en/installation" size="small" target="_blank">
+          {'Learn More'}
+        </Button>
+      </CardActions>
+    </Card>
+  );
+};
+
+export default Help;