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/Author/Author.tsx

@@ -0,0 +1,53 @@
+import React, { Component, ReactNode } from 'react';
+
+import Avatar from '@material-ui/core/Avatar';
+import List from '@material-ui/core/List';
+import ListItemText from '@material-ui/core/ListItemText';
+
+import { DetailContextConsumer } from '../../pages/version/Version';
+import { Heading, AuthorListItem } from './styles';
+import { isEmail } from '../../utils/url';
+
+class Authors extends Component<any, any> {
+  render() {
+    return (
+      <DetailContextConsumer>
+        {(context: any) => {
+          return context && context.packageMeta && this.renderAuthor(context.packageMeta);
+        }}
+      </DetailContextConsumer>
+    );
+  }
+
+  renderLinkForMail(email: string, avatarComponent: ReactNode, packageName: string, version: string) {
+    if (!email || isEmail(email) === false) {
+      return avatarComponent;
+    }
+
+    return (
+      <a href={`mailto:${email}?subject=${packageName}@${version}`} target={'_top'}>
+        {avatarComponent}
+      </a>
+    );
+  }
+
+  renderAuthor = packageMeta => {
+    const { author, name: packageName, version } = packageMeta.latest;
+
+    if (!author) {
+      return null;
+    }
+
+    const avatarComponent = <Avatar alt={author.name} src={author.avatar} />;
+    return (
+      <List subheader={<Heading variant={'subheading'}>{'Author'}</Heading>}>
+        <AuthorListItem>
+          {this.renderLinkForMail(author.email, avatarComponent, packageName, version)}
+          <ListItemText primary={author.name} />
+        </AuthorListItem>
+      </List>
+    );
+  };
+}
+
+export default Authors;