[core] Allow React 17 in peer dependencies

[oliviertassinari]

• The rational: makeStyles typescript issue when using function type attribute on 4.11.1 #23706 (comment), it will be moving problems we could have solved later on, sooner. We will uncover bugs sooner. It might cost us more time, but I believe the opportunity cost is one of the best we have.
• Apply [core] Support React 17 #23311 from v5 to v4, allow React 17 as a peer-dependency
• We can't upgrade the React dependencies in the repo until Support for React 17 enzymejs/enzyme#2429 is solved, unless we use https://www.npmjs.com/package/@eps1lon/enzyme-adapter-react-next or https://www.npmjs.com/package/@wojtekmaj/enzyme-adapter-react-17.
• Extend the support policy of v4 and put it in writing in the main README, so far the information was only distilled in some issues.

• Update the release schedule as the current estimation isn't realistic:

Fix #23306

[mui-pr-bot]

Details of bundle changes.

Comparing: b8092ce...7739008

Details of page changes

bundle	Size Change	Size	Gzip Change	Gzip
/components/chips	▲ +100 B (+0.46% )	21.7 kB	--	-1 B
/api-docs/textarea-autosize	▼ -10 B (-0.88% )	1.12 kB	--	-1 B
/blog/2020-developer-survey-results	▲ +10 B (+0.11% )	9.47 kB	--	-1 B
/components/pagination	▲ +10 B (+0.12% )	8.26 kB	--	-1 B
/getting-started/templates/album	▲ +10 B (+0.18% )	5.57 kB	--	-1 B
/getting-started/templates/blog	▲ +10 B (+0.13% )	7.44 kB	--	-1 B
/getting-started/templates/pricing	▲ +10 B (+0.13% )	7.78 kB	--	-1 B
/getting-started/templates/sign-in-side	▲ +10 B (+0.12% )	8.21 kB	--	-1 B
/performance/table-styled-components	▼ -10 B (-0.38% )	2.6 kB	--	-1 B
/system/palette	▲ +10 B (+0.24% )	4.16 kB	--	-1 B
/_app	--	36.9 kB	--	-1 B
/api-docs/accordion-actions	--	1.48 kB	--	-1 B
/api-docs/accordion-details	--	1.4 kB	--	-1 B
/api-docs/accordion-summary	--	1.7 kB	--	-1 B
/api-docs/accordion	--	1.97 kB	--	-1 B
/api-docs/alert-title	--	1.4 kB	--	-1 B
/api-docs/alert	--	2.4 kB	--	-1 B
/api-docs/app-bar	--	1.94 kB	--	-1 B
/api-docs/autocomplete	--	4.62 kB	--	-1 B
/api-docs/avatar-group	--	1.51 kB	--	-1 B
/api-docs/avatar	--	1.88 kB	--	-1 B
/api-docs/backdrop	--	1.73 kB	--	-1 B
/api-docs/badge	--	2.13 kB	--	-1 B
/api-docs/bottom-navigation-action	--	1.81 kB	--	-1 B
/api-docs/bottom-navigation	--	1.7 kB	--	-1 B
/api-docs/breadcrumbs	--	1.79 kB	--	-1 B
/api-docs/button-base	--	2.22 kB	--	-1 B
/api-docs/button-group	--	2.22 kB	--	-1 B
/api-docs/button	--	2.53 kB	--	-1 B
/api-docs/card-action-area	--	1.58 kB	--	-1 B
/api-docs/card-actions	--	1.47 kB	--	-1 B
/api-docs/card-content	--	1.45 kB	--	-1 B
/api-docs/card-header	--	1.78 kB	--	-1 B
/api-docs/card-media	--	1.69 kB	--	-1 B
/api-docs/card	--	1.5 kB	--	-1 B
/api-docs/checkbox	--	2.3 kB	--	-1 B
/api-docs/chip	--	2.46 kB	--	-1 B
/api-docs/circular-progress	--	2.09 kB	--	-1 B
/api-docs/click-away-listener	--	1.45 kB	--	-1 B
/api-docs/collapse	--	2.13 kB	--	-1 B
/api-docs/container	--	1.83 kB	--	-1 B
/api-docs/css-baseline	--	1.4 kB	--	-1 B
/api-docs/dialog-actions	--	1.47 kB	--	-1 B
/api-docs/dialog-content-text	--	1.48 kB	--	-1 B
/api-docs/dialog-content	--	1.45 kB	--	-1 B
/api-docs/dialog-title	--	1.49 kB	--	-1 B
/api-docs/dialog	--	2.74 kB	--	-1 B
/api-docs/divider	--	1.81 kB	--	-1 B
/api-docs/drawer	--	2.13 kB	--	-1 B
/api-docs/expansion-panel-actions	--	1.55 kB	--	-1 B
/api-docs/expansion-panel-details	--	1.47 kB	--	-1 B
/api-docs/expansion-panel-summary	--	1.84 kB	--	-1 B
/api-docs/expansion-panel	--	2.04 kB	--	-1 B
/api-docs/fab	--	2.1 kB	--	-1 B
/api-docs/fade	--	1.5 kB	--	-1 B
/api-docs/filled-input	--	2.87 kB	--	-1 B
/api-docs/form-control-label	--	1.99 kB	--	-1 B
/api-docs/form-control	--	2.36 kB	--	-1 B
/api-docs/form-group	--	1.55 kB	--	-1 B
/api-docs/form-helper-text	--	1.91 kB	--	-1 B
/api-docs/form-label	--	1.84 kB	--	-1 B
/api-docs/grid-list-tile-bar	--	1.8 kB	--	-1 B
/api-docs/grid-list-tile	--	1.73 kB	--	-1 B
/api-docs/grid-list	--	1.63 kB	--	-1 B
/api-docs/grid	--	2.56 kB	--	-1 B
/api-docs/grow	--	1.55 kB	--	-1 B
/api-docs/hidden	--	1.53 kB	--	-1 B
/api-docs/icon-button	--	2.07 kB	--	-1 B
/api-docs/icon	--	1.78 kB	--	-1 B
/api-docs/input-adornment	--	1.95 kB	--	-1 B
/api-docs/input-base	--	2.95 kB	--	-1 B
/api-docs/input-label	--	2.07 kB	--	-1 B
/api-docs/input	--	2.83 kB	--	-1 B
/api-docs/linear-progress	--	2.03 kB	--	-1 B
/api-docs/link	--	1.94 kB	--	-1 B
/api-docs/list-item-avatar	--	1.51 kB	--	-1 B
/api-docs/list-item-icon	--	1.51 kB	--	-1 B
/api-docs/list-item-secondary-action	--	1.47 kB	--	-1 B
/api-docs/list-item-text	--	1.79 kB	--	-1 B
/api-docs/list-item	--	2.25 kB	--	-1 B
/api-docs/list-subheader	--	1.75 kB	--	-1 B
/api-docs/list	--	1.68 kB	--	-1 B
/api-docs/menu-item	--	1.74 kB	--	-1 B
/api-docs/menu-list	--	1.57 kB	--	-1 B
/api-docs/menu	--	2.42 kB	--	-1 B
/api-docs/mobile-stepper	--	1.94 kB	--	-1 B
/api-docs/modal	--	2.43 kB	--	-1 B
/api-docs/native-select	--	2.11 kB	--	-1 B
/api-docs/no-ssr	--	1.3 kB	--	-1 B
/api-docs/outlined-input	--	2.98 kB	--	-1 B
/api-docs/pagination-item	--	1.97 kB	--	-1 B
/api-docs/pagination	--	2.23 kB	--	-1 B
/api-docs/paper	--	1.87 kB	--	-1 B
/api-docs/popover	--	2.7 kB	--	-1 B
/api-docs/popper	--	1.92 kB	--	-1 B
/api-docs/portal	--	1.34 kB	--	-1 B
/api-docs/radio-group	--	1.45 kB	--	-1 B
/api-docs/radio	--	2.12 kB	--	-1 B
/api-docs/rating	--	2.49 kB	--	-1 B
/api-docs/root-ref	--	1.42 kB	--	-1 B
/api-docs/scoped-css-baseline	--	1.4 kB	--	-1 B
/api-docs/select	--	2.96 kB	--	-1 B
/api-docs/skeleton	--	1.87 kB	--	-1 B
/api-docs/slide	--	1.54 kB	--	-1 B
/api-docs/slider	--	3.11 kB	--	-1 B
/api-docs/snackbar-content	--	1.61 kB	--	-1 B
/api-docs/snackbar	--	2.71 kB	--	-1 B
/api-docs/speed-dial-action	--	2.04 kB	--	-1 B
/api-docs/speed-dial-icon	--	1.55 kB	--	-1 B
/api-docs/speed-dial	--	2.32 kB	--	-1 B
/api-docs/step-button	--	1.63 kB	--	-1 B
/api-docs/step-connector	--	1.54 kB	--	-1 B
/api-docs/step-content	--	1.72 kB	--	-1 B
/api-docs/step-icon	--	1.57 kB	--	-1 B
/api-docs/step-label	--	1.9 kB	--	-1 B
/api-docs/step	--	1.64 kB	--	-1 B
/api-docs/stepper	--	1.84 kB	--	-1 B
/api-docs/svg-icon	--	2.26 kB	--	-1 B
/api-docs/swipeable-drawer	--	2.01 kB	--	-1 B
/api-docs/switch	--	2.46 kB	--	-1 B
/api-docs/tab-context	--	1.08 kB	--	-1 B
/api-docs/tab-list	--	1.09 kB	--	-1 B
/api-docs/tab-panel	--	1.48 kB	--	-1 B
/api-docs/tab-scroll-button	--	1.62 kB	--	-1 B
/api-docs/tab	--	1.97 kB	--	-1 B
/api-docs/table-body	--	1.47 kB	--	-1 B
/api-docs/table-cell	--	2.13 kB	--	-1 B
/api-docs/table-container	--	1.48 kB	--	-1 B
/api-docs/table-footer	--	1.47 kB	--	-1 B
/api-docs/table-head	--	1.46 kB	--	-1 B
/api-docs/table-pagination	--	2.47 kB	--	-1 B
/api-docs/table-row	--	1.69 kB	--	-1 B
/api-docs/table-sort-label	--	1.83 kB	--	-1 B
/api-docs/table	--	1.7 kB	--	-1 B
/api-docs/tabs	--	2.68 kB	--	-1 B
/api-docs/text-field	--	3.18 kB	--	-1 B
/api-docs/timeline-connector	--	1.4 kB	--	-1 B
/api-docs/timeline-content	--	1.43 kB	--	-1 B
/api-docs/timeline-dot	--	1.63 kB	--	-1 B
/api-docs/timeline-item	--	1.54 kB	--	-1 B
/api-docs/timeline-opposite-content	--	1.44 kB	--	-1 B
/api-docs/timeline-separator	--	1.4 kB	--	-1 B
/api-docs/timeline	--	1.52 kB	--	-1 B
/api-docs/toggle-button-group	--	1.92 kB	--	-1 B
/api-docs/toggle-button	--	1.79 kB	--	-1 B
/api-docs/toolbar	--	1.65 kB	--	-1 B
/api-docs/tooltip	--	2.57 kB	--	-1 B
/api-docs/tree-item	--	1.89 kB	--	-1 B
/api-docs/tree-view	--	1.92 kB	--	-1 B
/api-docs/typography	--	2.59 kB	--	-1 B
/api-docs/unstable-trap-focus	--	1.46 kB	--	-1 B
/api-docs/zoom	--	1.52 kB	--	-1 B
/blog/2019-developer-survey-results	--	7.56 kB	--	-1 B
/blog/2019	--	5.41 kB	--	-1 B
/blog/2020-introducing-sketch	--	4.68 kB	--	-1 B
/blog/2020-q1-update	--	5.51 kB	--	-1 B
/blog/2020-q2-update	--	5.56 kB	--	-1 B
/blog/2020-q3-update	--	7.31 kB	--	-1 B
/blog/april-2019-update	--	4.3 kB	--	-1 B
/blog/august-2019-update	--	3.41 kB	--	-1 B
/blog/danail-hadjiatanasov-joining	--	3.37 kB	--	-1 B
/blog/december-2019-update	--	3.55 kB	--	-1 B
/blog/july-2019-update	--	3.31 kB	--	-1 B
/blog/june-2019-update	--	3.19 kB	--	-1 B
/blog/march-2019-update	--	3.72 kB	--	-1 B
/blog/marija-najdova-joining	--	3.27 kB	--	-1 B
/blog/material-ui-v1-is-out	--	7.88 kB	--	-1 B
/blog/material-ui-v4-is-out	--	10.8 kB	--	-1 B
/blog/may-2019-update	--	3.53 kB	--	-1 B
/blog/november-2019-update	--	3.93 kB	--	-1 B
/blog/october-2019-update	--	3.69 kB	--	-1 B
/blog/september-2019-update	--	3.87 kB	--	-1 B
/blog/spotlight-damien-tassone	--	3.25 kB	--	-1 B
/company/about	--	1.75 kB	--	-1 B
/company/contact	--	1.34 kB	--	-1 B
/company/jobs	--	1.33 kB	--	-1 B
/company/software-engineer	--	5.33 kB	--	-1 B
/components/about-the-lab	--	11.1 kB	--	-1 B
/components/accordion	--	22.6 kB	--	-1 B
/components/alert	--	14 kB	--	-1 B
/components/app-bar	--	30.3 kB	--	-1 B
/components/autocomplete	--	102 kB	--	-1 B
/components/avatars	--	9.98 kB	--	-1 B
/components/backdrop	--	3.12 kB	--	-1 B
/components/badges	--	15.4 kB	--	-1 B
/components/bottom-navigation	--	6.16 kB	--	-1 B
/components/box	--	8.33 kB	--	-1 B
/components/breadcrumbs	--	14.5 kB	--	-1 B
/components/button-group	--	7.83 kB	--	-1 B
/components/buttons	--	27.3 kB	--	-1 B
/components/cards	--	17.4 kB	--	-1 B
/components/checkboxes	--	16.6 kB	--	-1 B
/components/click-away-listener	--	5.5 kB	--	-1 B
/components/container	--	3.92 kB	--	-1 B
/components/css-baseline	--	7.24 kB	--	-1 B
/components/dialogs	--	43.2 kB	--	-1 B
/components/dividers	--	12.7 kB	--	-1 B
/components/drawers	--	31.1 kB	--	-1 B
/components/floating-action-button	--	10.9 kB	--	-1 B
/components/grid-list	--	11.8 kB	--	-1 B
/components/grid	--	32.6 kB	--	-1 B
/components/hidden	--	10.3 kB	--	-1 B
/components/icons	--	28 kB	--	-1 B
/components/links	--	7.35 kB	--	-1 B
/components/lists	--	26.2 kB	--	-1 B
/components/material-icons	--	729 kB	--	-1 B
/components/menus	--	24.3 kB	--	-1 B
/components/modal	--	12.5 kB	--	-1 B
/components/no-ssr	--	5.5 kB	--	-1 B
/components/paper	--	3.37 kB	--	-1 B
/components/pickers	--	37.7 kB	--	-1 B
/components/popover	--	17.5 kB	--	-1 B
/components/popper	--	22.9 kB	--	-1 B
/components/portal	--	3.32 kB	--	-1 B
/components/progress	--	19.5 kB	--	-1 B
/components/radio-buttons	--	15.5 kB	--	-1 B
/components/rating	--	10.7 kB	--	-1 B
/components/selects	--	32.7 kB	--	-1 B
/components/skeleton	--	13.9 kB	--	-1 B
/components/slider	--	16.2 kB	--	-1 B
/components/snackbars	--	23.2 kB	--	-1 B
/components/speed-dial	--	15.3 kB	--	-1 B
/components/steppers	--	37.2 kB	--	-1 B
/components/switches	--	17.2 kB	--	-1 B
/components/tables	--	108 kB	--	-1 B
/components/tabs	--	24.8 kB	--	-1 B
/components/text-fields	--	56.2 kB	--	-1 B
/components/textarea-autosize	--	3.02 kB	--	-1 B
/components/timeline	--	7.47 kB	--	-1 B
/components/toggle-button	--	11.7 kB	--	-1 B
/components/tooltips	--	17.9 kB	--	-1 B
/components/transfer-list	--	9.77 kB	--	-1 B
/components/transitions	--	12.1 kB	--	-1 B
/components/tree-view	--	11.5 kB	--	-1 B
/components/typography	--	12.6 kB	--	-1 B
/components/use-media-query	--	13.6 kB	--	-1 B
/customization/breakpoints	--	17.1 kB	--	-1 B
/customization/color	--	19.1 kB	--	-1 B
/customization/components	--	37.3 kB	--	-1 B
/customization/default-theme	--	8.8 kB	--	-1 B
/customization/density	--	10.2 kB	--	-1 B
/customization/globals	--	5.12 kB	--	-1 B
/customization/palette	--	15.1 kB	--	-1 B
/customization/spacing	--	2.87 kB	--	-1 B
/customization/theming	--	19.4 kB	--	-1 B
/customization/typography	--	13.4 kB	--	-1 B
/customization/z-index	--	3.5 kB	--	-1 B
/discover-more/backers	--	3.11 kB	--	-1 B
/discover-more/changelog	--	1.39 kB	--	-1 B
/discover-more/languages	--	3.4 kB	--	-1 B
/discover-more/related-projects	--	9.08 kB	--	-1 B
/discover-more/roadmap	--	3.72 kB	--	-1 B
/discover-more/showcase	--	15.4 kB	--	-1 B
/discover-more/team	--	7.18 kB	--	-1 B
/discover-more/vision	--	6.75 kB	--	-1 B
/getting-started/example-projects	--	7.29 kB	--	-1 B
/getting-started/faq	--	40.5 kB	--	-1 B
/getting-started/installation	--	8.64 kB	--	-1 B
/getting-started/learn	--	8.51 kB	--	-1 B
/getting-started/support	--	11.1 kB	--	-1 B
/getting-started/supported-components	--	7.91 kB	--	-1 B
/getting-started/supported-platforms	--	5.97 kB	--	-1 B
/getting-started/templates	--	8.81 kB	--	-1 B
/getting-started/templates/checkout	--	10.2 kB	--	-1 B
/getting-started/templates/dashboard	--	8.85 kB	--	-1 B
/getting-started/templates/sign-in	--	8.44 kB	--	-1 B
/getting-started/templates/sign-up	--	8.54 kB	--	-1 B
/getting-started/templates/sticky-footer	--	1.54 kB	--	-1 B
/getting-started/usage	--	9.34 kB	--	-1 B
/guides/api	--	14.8 kB	--	-1 B
/guides/composition	--	15.6 kB	--	-1 B
/guides/flow	--	2.36 kB	--	-1 B
/guides/interoperability	--	16 kB	--	-1 B
/guides/localization	--	10.1 kB	--	-1 B
/guides/migration-v0x	--	7.78 kB	--	-1 B
/guides/migration-v3	--	18.7 kB	--	-1 B
/guides/minimizing-bundle-size	--	14.9 kB	--	-1 B
/guides/responsive-ui	--	4.22 kB	--	-1 B
/guides/right-to-left	--	5.37 kB	--	-1 B
/guides/server-rendering	--	9.93 kB	--	-1 B
/guides/testing	--	8.18 kB	--	-1 B
/guides/typescript	--	15.8 kB	--	-1 B
/performance/table-component	--	1.44 kB	--	-1 B
/performance/table-emotion	--	8.49 kB	--	-1 B
/performance/table-hook	--	2.24 kB	--	-1 B
/performance/table-mui	--	4.49 kB	--	-1 B
/performance/table-raw	--	613 B	--	-1 B
/premium-themes/onepirate	--	7.34 kB	--	-1 B
/premium-themes/onepirate/forgot-password	--	1.01 kB	--	-1 B
/premium-themes/onepirate/privacy	--	4.44 kB	--	-1 B
/premium-themes/onepirate/sign-in	--	1.07 kB	--	-1 B
/premium-themes/onepirate/sign-up	--	1.12 kB	--	-1 B
/premium-themes/onepirate/terms	--	11.8 kB	--	-1 B
/premium-themes/paperbase	--	7.7 kB	--	-1 B
/production-error	--	3.71 kB	--	-1 B
/styles/advanced	--	32.6 kB	--	-1 B
/styles/api	--	16.4 kB	--	-1 B
/styles/basics	--	15.9 kB	--	-1 B
/system/api	--	3.57 kB	--	-1 B
/system/basics	--	27.1 kB	--	-1 B
/system/borders	--	3.71 kB	--	-1 B
/system/display	--	6.2 kB	--	-1 B
/system/flexbox	--	5.39 kB	--	-1 B
/system/positions	--	2.27 kB	--	-1 B
/system/shadows	--	3.69 kB	--	-1 B
/system/sizing	--	3.35 kB	--	-1 B
/system/spacing	--	6.25 kB	--	-1 B
/system/typography	--	4.03 kB	--	-1 B
/versions	--	22.8 kB	--	-1 B
docs:chunk:shared	--	63.9 kB	--	-1 B
docs:shared:chunk/commons	--	5.99 kB	--	-1 B
docs:shared:chunk/framework	--	42.3 kB	--	-1 B
docs:shared:runtime/main	--	6.78 kB	--	-1 B
docs:shared:runtime/webpack	--	1.24 kB	--	-1 B

bundle	Size Change	Size	Gzip Change	Gzip
@material-ui/core	--	375 kB	--	102 kB
@material-ui/lab	--	223 kB	--	65.6 kB
@material-ui/styles	--	52.1 kB	--	15.6 kB
@material-ui/system	--	17.2 kB	--	4.51 kB
@material-ui/utils	--	7.19 kB	--	2.61 kB
Accordion	--	77.2 kB	--	24.2 kB
AccordionActions	--	66.5 kB	--	20.8 kB
AccordionDetails	--	66.4 kB	--	20.7 kB
AccordionSummary	--	82.2 kB	--	26 kB
Alert	--	87.4 kB	--	27.5 kB
AlertTitle	--	68.7 kB	--	21.5 kB
AppBar	--	68.5 kB	--	21.4 kB
Autocomplete	--	136 kB	--	42.8 kB
Avatar	--	69.7 kB	--	21.8 kB
AvatarGroup	--	70.7 kB	--	22.4 kB
Backdrop	--	73.1 kB	--	22.6 kB
Badge	--	69.8 kB	--	21.7 kB
BottomNavigation	--	66.8 kB	--	20.9 kB
BottomNavigationAction	--	79.6 kB	--	25.2 kB
Box	--	73.3 kB	--	22.2 kB
Breadcrumbs	--	84.6 kB	--	26.7 kB
Button	--	83.8 kB	--	25.7 kB
ButtonBase	--	78 kB	--	24.5 kB
ButtonGroup	--	87.5 kB	--	27 kB
Card	--	67.3 kB	--	21 kB
CardActionArea	--	79.1 kB	--	25 kB
CardActions	--	66.5 kB	--	20.8 kB
CardContent	--	66.4 kB	--	20.7 kB
CardHeader	--	69.6 kB	--	21.8 kB
CardMedia	--	66.8 kB	--	20.9 kB
Checkbox	--	86.3 kB	--	27.4 kB
Chip	--	86.8 kB	--	26.6 kB
CircularProgress	--	68.6 kB	--	21.5 kB
ClickAwayListener	--	4.16 kB	--	1.67 kB
Collapse	--	73.5 kB	--	22.7 kB
colorManipulator	--	4.14 kB	--	1.63 kB
Container	--	67.7 kB	--	21.1 kB
CssBaseline	--	66.4 kB	--	20.8 kB
Dialog	--	88.4 kB	--	27.6 kB
DialogActions	--	66.5 kB	--	20.8 kB
DialogContent	--	66.7 kB	--	20.8 kB
DialogContentText	--	68.5 kB	--	21.5 kB
DialogTitle	--	68.8 kB	--	21.6 kB
Divider	--	67.1 kB	--	21.1 kB
docs:/	--	12.9 kB	--	-1 B
docs:/_app	--	36.9 kB	--	-1 B
Drawer	--	90.4 kB	--	27.5 kB
ExpansionPanel	--	77.2 kB	--	24.2 kB
ExpansionPanelActions	--	66.5 kB	--	20.8 kB
ExpansionPanelDetails	--	66.4 kB	--	20.7 kB
ExpansionPanelSummary	--	82.2 kB	--	26 kB
Fab	--	80.9 kB	--	25.2 kB
Fade	--	28.9 kB	--	9.66 kB
FilledInput	--	78 kB	--	24.2 kB
FormControl	--	68.9 kB	--	21.4 kB
FormControlLabel	--	70 kB	--	21.9 kB
FormGroup	--	66.4 kB	--	20.8 kB
FormHelperText	--	67.8 kB	--	21 kB
FormLabel	--	68 kB	--	21 kB
Grid	--	69.5 kB	--	21.8 kB
GridList	--	66.9 kB	--	21 kB
GridListTile	--	68.2 kB	--	21.3 kB
GridListTileBar	--	67.7 kB	--	21.2 kB
Grow	--	29.5 kB	--	9.88 kB
Hidden	--	70.5 kB	--	22.1 kB
Icon	--	67.3 kB	--	21 kB
IconButton	--	80.2 kB	--	25.1 kB
Input	--	76.9 kB	--	24 kB
InputAdornment	--	69.6 kB	--	21.9 kB
InputBase	--	75 kB	--	23.5 kB
InputLabel	--	69.8 kB	--	21.5 kB
LinearProgress	--	69.9 kB	--	21.8 kB
Link	--	71.1 kB	--	22.4 kB
List	--	66.8 kB	--	20.8 kB
ListItem	--	81.1 kB	--	25.4 kB
ListItemAvatar	--	66.5 kB	--	20.8 kB
ListItemIcon	--	66.6 kB	--	20.8 kB
ListItemSecondaryAction	--	66.4 kB	--	20.8 kB
ListItemText	--	69.5 kB	--	21.8 kB
ListSubheader	--	67.3 kB	--	21.1 kB
Menu	--	94 kB	--	28.9 kB
MenuItem	--	82.2 kB	--	25.7 kB
MenuList	--	70.5 kB	--	22 kB
MobileStepper	--	72.4 kB	--	22.6 kB
Modal	--	15.1 kB	--	5.28 kB
NativeSelect	--	81.4 kB	--	25.6 kB
NoSsr	--	2.18 kB	--	1.03 kB
OutlinedInput	--	79.1 kB	--	24.5 kB
packages/material-ui/material-ui.production.min.js	--	330 kB	--	95.4 kB
Pagination	--	88.6 kB	--	27.3 kB
PaginationItem	--	85 kB	--	26.2 kB
Paper	--	66.8 kB	--	20.8 kB
Popover	--	88.3 kB	--	27.3 kB
Popper	--	28.7 kB	--	10.3 kB
Portal	--	2.87 kB	--	1.29 kB
Radio	--	87.3 kB	--	27.6 kB
RadioGroup	--	68.4 kB	--	21.2 kB
Rating	--	75.3 kB	--	24.2 kB
RootRef	--	4.64 kB	--	1.76 kB
ScopedCssBaseline	--	67.3 kB	--	21.1 kB
Select	--	121 kB	--	36.1 kB
Skeleton	--	67.7 kB	--	21.3 kB
Slide	--	30.7 kB	--	10.3 kB
Slider	--	80.4 kB	--	25.5 kB
Snackbar	--	80.9 kB	--	25.4 kB
SnackbarContent	--	68 kB	--	21.3 kB
SpeedDial	--	91.1 kB	--	28.9 kB
SpeedDialAction	--	123 kB	--	39.1 kB
SpeedDialIcon	--	69 kB	--	21.6 kB
Step	--	67.2 kB	--	21.1 kB
StepButton	--	86.4 kB	--	27.2 kB
StepConnector	--	67.2 kB	--	21.1 kB
StepContent	--	74.7 kB	--	23.3 kB
StepIcon	--	69.1 kB	--	21.5 kB
StepLabel	--	73 kB	--	22.6 kB
Stepper	--	69.2 kB	--	21.8 kB
styles/createMuiTheme	--	21.9 kB	--	7.57 kB
SvgIcon	--	67.5 kB	--	21 kB
SwipeableDrawer	--	97.8 kB	--	30.7 kB
Switch	--	85.5 kB	--	26.8 kB
Tab	--	80.6 kB	--	25.6 kB
TabContext	--	2.65 kB	--	1.15 kB
Table	--	67 kB	--	21 kB
TableBody	--	66.6 kB	--	20.8 kB
TableCell	--	68.6 kB	--	21.5 kB
TableContainer	--	66.4 kB	--	20.7 kB
TableFooter	--	66.6 kB	--	20.8 kB
TableHead	--	66.6 kB	--	20.8 kB
TablePagination	--	148 kB	--	43.6 kB
TableRow	--	67 kB	--	21 kB
TableSortLabel	--	81.5 kB	--	25.7 kB
TabList	--	91.5 kB	--	29.2 kB
TabPanel	--	67.3 kB	--	21 kB
Tabs	--	90.3 kB	--	28.2 kB
TabScrollButton	--	81.1 kB	--	25.4 kB
TextareaAutosize	--	5.23 kB	--	2.19 kB
TextField	--	130 kB	--	38.2 kB
Timeline	--	66.9 kB	--	20.9 kB
TimelineConnector	--	66.4 kB	--	20.8 kB
TimelineContent	--	66.9 kB	--	20.9 kB
TimelineDot	--	67.5 kB	--	21.1 kB
TimelineItem	--	67.6 kB	--	21.1 kB
TimelineOppositeContent	--	67 kB	--	20.9 kB
TimelineSeparator	--	66.4 kB	--	20.8 kB
ToggleButton	--	80.2 kB	--	25.4 kB
ToggleButtonGroup	--	67.8 kB	--	21.3 kB
Toolbar	--	66.8 kB	--	20.9 kB
Tooltip	--	107 kB	--	33.9 kB
TreeItem	--	80.5 kB	--	25.5 kB
TreeView	--	72.8 kB	--	22.8 kB
Typography	--	68.1 kB	--	21.2 kB
Unstable_TrapFocus	--	3.87 kB	--	1.59 kB
useAutocomplete	--	14.7 kB	--	5.27 kB
useMediaQuery	--	2.56 kB	--	1.06 kB
useScrollTrigger	--	2.66 kB	--	1.08 kB
Zoom	--	29 kB	--	9.8 kB

Generated by 🚫 dangerJS against 7739008

[100terres]

🎉

[eps1lon]

No argument I made changed. We shouldn't do this. You're purposely hiding potential problems and I will not support this behavior.

I'm also against this support policy. We're missing ~5 people that work on the public OSS part to support that.

[mbrookes]

@eps1lon Is the main concern that if issues arise with React 17 in v4, we will have to fix them fast because it's the stable version, where with v5-alpha we can take longer if we need to?

[oliviertassinari]

Our codesandbox and examples have been powered by React 17 for the last 5-6 weeks.

I believe it's the first time we are in such a situation, we never had a similar case to handle during previous major iterations. Either they were no changes among our peer dependencies or they were breaking.

Considering that most dev teams can upgrade React 17 with no issues, I think that we have more to gain by updating too. In the worse case, we will know sooner about the potential issues, the community will be incentives to help fix them (as they can directly benefit from the fixes, not wait 6 months or handle the breaking changes like on v5). If the fix requires a breaking change, then we will only fix it in v5 but at least, we would get partial support for React 17, that developers already use Material-UI v4 with anyway.

I will handle the overhead if necessary.

[lephleg]

Could you push a new release out in order to fetch these changes with npm?

I tried the master branch directly:

npm install git://github.com/mui-org/material-ui#master --save

but it's ruining my imports.