github.com-microsoft-fluentui

feat(web-components): generate SSR templates and stylesheets into src/ (#36259) ## Previous Behavior SSR template HTML and stylesheet CSS were generated at build time and written only to `dist/`. The output had no presence in `src/`, was never committed, and contributors had no way to inspect the DSD output without running a build. ## New Behavior SSR templates and stylesheets are now generated next to their `*.template.ts` / `*.styles.ts` siblings in `src/` and committed to the repo. This makes the DSD output visible during the WC v3 alpha. `yarn compile` no longer regenerates them; it copies `src/**/*.template.html` and `src/**/*.styles.css` into `dist/esm/`. `yarn generate:ssr` runs the harness's `generateFTemplates` and `generateStylesheets` with `outDir: 'src'` and formats the result with Prettier. `yarn check:ssr` runs the generators against a staging directory and compares the result to `src/` and the working tree. It reports `unchanged`, `created`, `updated`, `stale`, `handEdited`, and `conflicts`, and exits non-zero when stale, hand-edited, or conflicting files appear. `yarn compile` is extended to copy `src/**/*.template.html` and `src/**/*.styles.css` into `dist/esm/` after `tsc`, preserving subdirectory structure. The old `build:ssr`, `build:ssr:styles`, and `build:ssr:templates` scripts were removed.

test(react-menu): add hook-level regression tests for react-menu components (#36080)

fix(web-components): harden component lifecycle for SSR/DSD hydration scenarios (#35838)

feat(web-components): add Dropdown, Listbox, and Option components (#32116)

chore: migrate v9 packages to use eslint flat configs (#35418)

feat(react-toast): headless toast implementation (#36059) Co-authored-by: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

fix(react-components,react-charts): migrate to R19 compatible JSX.* namespace types (#34923)

feat(motion): Add Stagger choreography component (#34705)

feat(react-headless-components-preview): add Popover & positioning (#36006)

feat(react-headless-components-preview): add Tag family (#36230)

feat(react-headless-components-preview): add Menu component and stories (#36110)

feat(web-components): add SSR support via Declarative Shadow DOM modules (#36247) ## Previous Behavior `@fluentui/web-components` had no server-side rendering path. Components were defined and rendered only on the client, so SSR frameworks could not pre-render Fluent web components into HTML and hydrate them on load. The e2e tests ran against a custom harness that only covered client-side rendering. ## New Behavior `@fluentui/web-components` now supports SSR via Declarative Shadow DOM, built on `@microsoft/fast-element` and `@microsoft/fast-html`. Every component in the package ships a paired `define-async.ts` / `*.definition-async.ts` module so its template can render on the server and hydrate on the client. The build also emits two new asset types alongside the JS modules, one pair per component (42 of each), exposed through new package subpath exports: - `@fluentui/web-components/<component>/template.html`: declarative HTML template wrapped in `<f-template>`, consumed by `@microsoft/fast-html` to render Declarative Shadow DOM on the server. - `@fluentui/web-components/<component>/styles.css`: plain CSS extracted from the component's styles, importable as a raw stylesheet without pulling in the component's JS. Currently, the SSR templates and styles are generated at build time and placed in the `dist` output, but we may want to provide them as src assets in the future for easier consumption and customization. New test harness modules (`test/src/entry-client.ts`, `test/src/entry-server.ts`) and a `test/ssr.html` entry point template exercise the DSD output end-to-end. The e2e pipeline runs SSR tests after CSR tests. Several components needed template or base adjustments to render correctly under SSR: tooltip (anchor positioning polyfill handling), text-input, textarea, tree, and tree-item. The `theme/set-theme` tests are skipped under SSR. ## Next Steps This PR lays the groundwork for SSR support in `@fluentui/web-components`, but there are still some follow-up tasks to complete: - Update to the latest `@microsoft/fast-element` and remove the `@microsoft/fast-html` dependency, as DSD rendering will be directly supported in FAST in the next major release. - Provide more detailed documentation and examples for using the SSR templates and styles. - Add more comprehensive SSR tests covering edge cases and hydration scenarios.

feat(chart-web-components): Create chart web components - Donut and Horizontal Bar Chart (#33084) Co-authored-by: Anush Gupta <74965306+Anush2303@users.noreply.github.com> Co-authored-by: krkshitij <110246001+krkshitij@users.noreply.github.com> Co-authored-by: v-baambati <132879294+v-baambati@users.noreply.github.com> Co-authored-by: Kumar Kshitij <kumarkshitij@microsoft.com>

test(react-teaching-popover): add hook regression tests (#36201)

feat(react-headless-components-preview): add Dialog component (#35996) Co-authored-by: Cursor Agent <cursoragent@cursor.com> Co-authored-by: Dmytro Kirpa <dmytrokirpa@users.noreply.github.com> Co-authored-by: Copilot <copilot@github.com>

feat(react-integration-tester): implement `rit` CLI (#35172)

docs(web-components): match storybook argTypes to custom element manifest (#36271)

feat(react-headless-components-preview): add Nav component and stories (#36213)

chore: upgrade storybook to v8 (#35279)

feat(react-headless-components-preview): add TeachingPopover (#36205)