* Convert sitemap plugin to TypeScript

Test - enabled the sitemap plugin in the v2 website and verified that
the sitemap is created after running `docusaurus build`.

* Addressing review comments

…cebook#1898)

* perf(v2): reduce bundle size significantly with super short chunk name and registry

* changelog

* use hash:8 as id for better long term caching

* even shorter filename. slice contenthash

* fix(v2): align search icon on small width device

* nits

* nits

* change(v2): refactor dark toggle into a theme

* follow how themes resolve files

* let theme hook to pick up default theme by itself

…acebook#1871)

* fix issue#1752

when element in side nav is hovered over the color changes.

* Update main.css

…1895)

* misc(v2): address comments

* misc(v2): update CHANGELOG

* feat(v2): allow line highlighting

* Refactor: use parse-numeric-range for parsing

* Add line highlighting for live code blocks

* feat(v2): add sticky footer (facebook#1855)

* feat(v2): add sticky footer

* Update CHANGELOG-2.x.md

* Update CHANGELOG-2.x.md

* fix(v2): remove empty doc sidebar container (facebook#1870)

* docs: showcase user Amphora (facebook#1873)

* Add Amphora Data link to users

Adds Amphora Data to the list of users

* Add Amphora Data logo

* fix case of image path

* Move Image into users directory

* use black amphora image

* fix(v2): fix search input blur on desktop (facebook#1874)

* docs(v2): showcase user mbt-bundle (facebook#1875)

* feat(v2): postcss should only use stage 3 features instead of stage 2 (facebook#1872)

* feat(v2): add ability expand all items in doc sidebar (facebook#1876)

* feat(v2): add ability expand all items in doc sidebar

* Fix tests

* Refactor: use themeConfig

* Improve docs

* Revert unnecessary  changes

* Refactor: better consistency

* Revert extra change

* Refactor: use useDocusaurusContext to get config value

* chore(v2): update changelog

* chore(v2): update showcase and broken link

* perf(v2): disable hash for css modules localident in dev (facebook#1882)

* perf(v2): disable hash for css modules localident in dev

* changelog

* feat(v2): display footer in docs page for consistency (facebook#1883)

* feat(v2): display footer in docs page

* nits

* address review

* nits

* docs(v2): fix format inline code (facebook#1888)

* docs(v2): add docs on useful client api (facebook#1890)

* docs(v2): add docs on useful client api

* Update docusaurus-core.md

* Update website/docs/docusaurus-core.md

* Update website/docs/docusaurus-core.md

* Update website/docs/docusaurus-core.md

* Update website/docs/docusaurus-core.md

* docs(v2): update config docs (facebook#1885)

* fix(v2): do not show categories with empty items (facebook#1891)

* styles(v2): update infima and fix styles (facebook#1892)

* fix(v2): wrong css class

* v2.0.0-alpha.31

* chore(v2): update docs and changelog

* docs(v2): update plugins, presets and themes docs (facebook#1889)

* docs(v2): update plugins, presets and themes docs

* ideal image plugin

* proof reading

* Merge master

* refactor(v2): Convert sitemap plugin to TypeScript (facebook#1894)

* Convert sitemap plugin to TypeScript

Test - enabled the sitemap plugin in the v2 website and verified that
the sitemap is created after running `docusaurus build`.

* Addressing review comments

* perf(v2): significantly reduce bundle size & initial html payload (facebook#1898)

* perf(v2): reduce bundle size significantly with super short chunk name and registry

* changelog

* use hash:8 as id for better long term caching

* even shorter filename. slice contenthash

* fix(v2): align search icon on small width device (facebook#1893)

* fix(v2): align search icon on small width device

* nits

* nits

* refactor(v2): refactor dark toggle into a hook (facebook#1899)

* change(v2): refactor dark toggle into a theme

* follow how themes resolve files

* let theme hook to pick up default theme by itself

* perf(v2): reduce memory usage consumption (facebook#1900)

* misc(v1): use primary color for hovered items in table of contents (facebook#1871)

* fix issue#1752

when element in side nav is hovered over the color changes.

* Update main.css

* fix(v1): mobile safari search input misalignment in header (facebook#1895)

* misc(v2): v1 backward compatibility for USE_SSH env var (facebook#1880)

* misc(v2): address comments

* misc(v2): update CHANGELOG

* Update README.md - Fix Broken Link

* misc: update URLs to non-HTML versions

…1903)

* fix(v2): nested routes should have wildcard/ not found page too

* better fix

* nits

* space

* docs(v2): code block line highlighting

* misc: update CHANGELOG

* misc: respond to review

* docs: add line highlighting to the template

…wn deps (facebook#1907)

* fix(v2): webpack modules resolve should prioritize own deps

* nits

…ook#1908)

* feat(v2): simplify blog metadata to minimize number of request

* remove async

…book#1912)

* update jest config

* add more tests on docs plugin

* fix(v2): docs plugin should not add routes if there are no docs

* fix

* rm -rf coverage

* nits

* update

…acebook#1914)

* docs: add windows batch instructions for publishing to gh pages

* docs: add windows batch instructions on the v2 website

…s undefined (facebook#1909)

* fix(v2): custom searchbar should appear even if themeconfig.algolia is undefined

* nits

* Docs docs

* inaccuracy

* changelog

* nits

* docs(v2): Redirect component for easy redirect

* typo

* docs

* Update website/docs/docusaurus-core.md

Co-Authored-By: Alexey Pyltsyn <lex61rus@gmail.com>

* Update docusaurus-core.md

… bugs)

…ok#1917)

* fix(v2): regression from prioritizing core node_modules logic

* nits

…facebook#1925)

* docs(v2): theme, plugin, and preset config

* change tabs to spaces

* change theme example

This is much stable and more performant

* fix(v2): allow to create tabs with only one item

It was not possible to have tabs containing only one tab item, so the code below crashed

```
<Tabs
    defaultValue="SomeFile.js"
    values={[
        { label: "SomeFile.js", value: "SomeFile.js" }
    ]}
>
<TabItem value="SomeFile.js">
    Tab content
</TabItem>
</Tabs>
```

* Update index.js

…into SantiagoGdaR-feat/1752