Victor Genaev

This commit implements a **security fix** to prevent navigation to potentially unsafe URLs when users click on interactive chart elements. It introduces a new utility function, `isSafeUrl`, which validates URLs against malicious protocols, and integrates this check into the `_redirectToUrl` and `_onBarClick` handlers across various **chart components**. Specifically, this affects the **click-to-navigate functionality** in `DonutChart`, `GroupedVerticalBarChart`, `StackedBarChart`, and `VerticalStackedBarChart` within both `react-charting` and `react-charts/library`. This enhancement ensures that all chart-driven redirections are safe, thereby mitigating potential cross-site scripting (XSS) vulnerabilities. Unit tests for the new `isSafeUrl` utility were also added to confirm its proper functioning.

This commit delivers a **bug fix** for the **`react-storybook-addon-export-to-sandbox`** package, ensuring its compatibility with **Storybook 10**. It updates the `prepareSandboxContainers` utility in `sandbox-utils.ts` to correctly identify Storybook documentation elements by supporting both the old and new anchor ID formats. This adjustment resolves issues where the addon failed to locate and export examples from Storybook 10, thereby maintaining the functionality of exporting component sandboxes.

This commit delivers a **bug fix** for the **`Calendar` component** within the **`@fluentui-react-calendar-compat` package**. It addresses an issue where the component would crash if its `value` prop, which internally maps to `selectedDate` and `navigatedDay`, was `undefined`. The change modifies `Calendar.tsx` to gracefully handle these `undefined` states, preventing runtime errors and significantly improving the component's **robustness** and **stability**. New tests have been added to `Calendar.test.tsx` to specifically validate this corrected behavior, ensuring a more reliable user experience for applications utilizing this component.

This commit performs a **maintenance chore** by updating the `.github/CODEOWNERS` file. It revises the designated owners for various **React component packages** and other core components within the repository. This ensures that pull requests are automatically assigned to the correct individuals, thereby improving **code review efficiency** and maintaining proper accountability for different parts of the codebase.

This commit introduces a **new capability** to the **`@fluentui/react-dialog`** component, allowing developers to customize the `appearance` of the dialog's backdrop slot (e.g., `dimmed`, `transparent`). It also includes a **fix** for nested components, ensuring that dialogs opened within an **`OverlayDrawer`** correctly manage their backdrops by providing a `DialogBackdropContext`. This enables more flexible UI designs and prevents issues like multiple dimming layers in complex layouts. New VR tests demonstrate dialogs nested within drawers and explicit backdrop settings, while updated API documentation and new stories explain the `appearance` prop.

This commit performs **maintenance** by updating the `.github/CODEOWNERS` file. It specifically **removes individual owners** from the `react-migration-v8-v9` and `fluent2-theme` packages. This change streamlines the code ownership process, ensuring that review assignments and responsibilities for these **UI component migration** and **theming packages** are accurately reflected. The update helps maintain an up-to-date and efficient code review workflow.

This commit undertakes a significant **refactoring** effort to **migrate the project's internal ESLint configurations to the new flat config format**. It primarily impacts the **`eslint-plugin` package**, where `core`, `imports`, and `react` configurations are updated, and legacy exports are removed from `src/index.js`. This **maintenance** task also updates the `eslint.config.js` files for the `pr-deploy-site` application and `public-docsite-setup` package, ensuring they leverage the modern configuration structure. The change streamlines ESLint setup across the codebase and includes updated documentation for the `eslint-plugin-react-components` to guide users on the new flat config usage.

This commit **fixes** a styling issue within the **`@fluentui-react-link` package**, specifically for the **`Link` component's inverted variant**. It updates the `useLinkStyles.styles.ts` file to correctly apply `colorBrandForegroundInverted` tokens for the link's default, hover, and active states. This **bug fix** ensures that inverted links display with the appropriate brand foreground color, improving visual consistency and adherence to design specifications in inverted themes.

This commit **fixes** a styling issue in the **`react-table`** component library by ensuring **selected table rows display a distinct hover background color**. Previously, an explicit override prevented proper hover styling on selected rows, leading to inconsistent UI behavior. The change removes this override within `useTableRowStyles.styles.ts`, allowing for improved **UI clarity and user experience**. Visual regression tests for `TableCellActions` were updated to verify the correct appearance of neutral and brand selected rows with this new hover behavior.

This commit **migrates the entire monorepo to ESLint's new flat configuration system**, introducing a root `eslint.config.js` file and **refactoring** the individual configurations across numerous **React components** and other **packages** to extend from it. This significant **maintenance** effort standardizes the linting setup, impacting **build tooling** such as Nx, lint-staged, and verify-packaging scripts, which are updated to recognize the new file structure. The change streamlines ESLint management and ensures consistent code quality checks across all projects, preparing the codebase for future ESLint features and improvements.

This commit introduces a **new capability** to the `prefer-fluentui-v9` ESLint rule within the **`eslint-plugin-react-components`** package. It now provides **support for granular Fluent UI v8 library imports**, specifically by checking for `source.startsWith('@fluentui/react/')` in the rule's logic. This enhancement improves the rule's ability to accurately identify and flag specific v8 component imports, thereby better guiding developers during the **Fluent UI v8 to v9 migration**. New test cases have been added to validate the correct identification of these granular imports, ensuring the rule's robustness.

chore: bump storybook to 8.6.15 and resolve CVE-2025-68429 (#35587)

This commit performs a significant **refactoring** by **migrating ESLint configurations** across a large portion of the monorepo. Specifically, it updates the linting setup for numerous **apps, tools, and scripts** from the legacy `.eslintrc.json` format to the modern **flat config format (`eslint.config.js`)**. This effort modernizes the project's **linting infrastructure**, enhancing consistency and maintainability. Additionally, the **workspace-plugin** was updated to correctly recognize and process these new flat config files, ensuring seamless integration. Minor code style adjustments and `eslint-disable` directives were also applied where necessary.

This commit primarily performs a **maintenance update** by migrating the ESLint configurations for several **chart-related packages** and **web components** to the new flat config format, aligning them with modern ESLint practices. Affected packages include `@fluentui/chart-utilities`, `@fluentui/chart-web-components`, `@fluentui/react-charting`, `@fluentui/react-charts`, and `@fluentui/web-components`. It also includes minor **code refactoring** in `react-charting` and `react-charts` utilities, updating functions like `generateNumericTicks` and `precisionRound` to use the exponentiation operator for improved readability. This **refactoring** also cleans up redundant `eslint-disable` comments and simplifies JSX assignments in story files, enhancing overall code quality.

This commit **upgrades the Nx monorepo tooling to version 21.6.10**, a significant **maintenance update** for the project's build system. It involves **refactoring core Nx configuration files** like `nx.json` and `migrations.json` to align with the new version and its features. Additionally, several **internal build and workspace scripts** are adjusted, including updating Babel plugin references in `scripts/babel/src/index.js` and adapting to new `FsTree` parameters in `scripts/executors/src/generate-ui.ts`. This ensures compatibility with the latest Nx APIs and prepares for related dependency bumps like `typescript-eslint`, enhancing the overall stability and currency of the development environment.

chore: migrate to jest v30 (#35456)

This commit performs a **major tooling update** by migrating the ESLint configurations for a **wide range of Fluent UI packages** to the new "flat config" format. This **refactoring** of the linting setup affects core packages like `@fluentui/react`, `@fluentui/react-experiments`, and numerous utility and theme packages, modernizing how code quality is enforced. As a direct result, several `eslint-disable` comments were removed, and minor stylistic improvements, such as property shorthand syntax, were applied across various examples and components. This **maintenance** effort enhances overall code consistency and maintainability by aligning the project with the latest ESLint best practices.

This commit primarily focuses on **code quality improvement** by removing numerous **unused `eslint-disable` directives** across a wide array of **Fluent UI packages** and the **public documentation site**. This **maintenance** effort cleans up the codebase, ensuring that ESLint rules are correctly applied and improving overall code hygiene and readability. Affected areas include various **charting components** (`@fluentui-react-charting`, `@fluentui-react-charts`), **experimental features** (`@fluentui-react-experiments`), **core React components** (`@fluentui-react`), and **utility functions** (`@fluentui-utilities`). Additionally, it includes minor **refactorings**, such as updating `Math.pow` to the exponentiation operator in `packages/utilities/src/math.ts` and removing an unnecessary `default` case in the `Beak` component within `packages/react`.

This commit **fixes a build and type-check issue** within the **`react-portal-compat`** package's test suite. It **refactors an import statement** in `packages/react-components/react-portal-compat/src/PortalCompat.cy.tsx`, changing the `PortalCompatProvider` import from an absolute package path to a relative path. This **test fix** resolves a race condition during the build process and ensures correct type-checking for the component's Cypress tests. The change improves the reliability of the **`react-portal-compat`** testing infrastructure without affecting the component's runtime behavior.

This commit performs a **maintenance chore** by **updating the `workspace-plugin` generators** to utilize the modern ESLint flat configuration format. Specifically, the **`react-library` and `split-library-in-two` generators** will now generate `eslint.config.js` files instead of the older `.eslintrc.json` format. This involves introducing a new `eslint.config.js__tmpl__` template for React libraries and modifying the `makeStoriesLibrary` function to output the new configuration. This ensures that newly generated libraries are set up with the latest ESLint standards, improving consistency and future-proofing the project's linting setup. Associated tests have been updated to reflect these changes.