Fixed stale toggled state in react useDelayedToggleState, migrated to oxfmt/oxlint, added testcases.

[Curstantine]

No description provided.

[Copilot]

Pull request overview

This PR fixes a stale-state bug in useDelayedToggleState, migrates repo tooling from ESLint/dprint to oxlint/oxfmt, and standardizes the monorepo test runner on Vitest (including Playwright-powered browser tests for the React package).

Changes:

• Updated useDelayedToggleState implementation and adjusted useMediaQuery subscription/snapshot logic.
• Migrated tests in core, query, and form-data from node:test/assert to Vitest; added browser-based hook tests for @jabascript/react.
• Replaced ESLint/dprint setup with oxlint/oxfmt config, updated scripts, and introduced Nix flake dev shell files.

Reviewed changes

Copilot reviewed 26 out of 32 changed files in this pull request and generated 10 comments.

Show a summary per file

File	Description
vitest.config.js	Adds root Vitest configuration for multi-project execution.
pnpm-workspace.yaml	Normalizes workspace package indentation.
pnpm-lock.yaml	Updates lockfile for new tooling/test dependencies (oxlint/oxfmt/vitest/playwright/etc).
packages/react/vitest.config.js	Adds Vitest browser (Playwright) configuration for React package tests.
packages/react/tsconfig.test.json	Adds a TS config for React tests (noEmit, includes tests).
packages/react/tests/client.test.jsx	Adds browser tests for useDelayedToggleState and useMediaQuery.
packages/react/src/client.js	Fixes stale state in useDelayedToggleState; refactors useMediaQuery.
packages/react/package.json	Adds vitest/playwright tooling and test scripts for the React package.
packages/query/tests/index.test.js	Migrates query tests from node:test to Vitest.
packages/query/package.json	Switches query package test scripts to Vitest and adds Vitest devDependency.
packages/form-data/tests/index.test.js	Migrates form-data tests from node:test to Vitest.
packages/form-data/src/index.js	Minor expression/parentheses adjustments in parseFormData.
packages/form-data/package.json	Switches form-data package test scripts to Vitest.
packages/core/tests/index.test.js	Migrates core tests from node:test to Vitest (vi.fn, expect APIs).
packages/core/tests/enum.test.js	Migrates enum tests from node:test to Vitest.
packages/core/package.json	Switches core package test scripts to Vitest.
package.json	Updates root scripts (vitest/oxlint/oxfmt) and devDependencies; updates pnpm metadata.
flake.nix	Adds Nix dev shell including Node/corepack and Playwright browsers.
flake.lock	Locks Nix inputs for the new flake.
eslint.config.js	Removes ESLint flat config file as part of tool migration.
dprint.json	Removes dprint config file as part of tool migration.
README.md	Minor formatting adjustment to list indentation.
.zed/settings.json	Replaces dprint-based formatting with oxlint/oxfmt LSP configuration for Zed.
.vscode/settings.json	Minor formatting changes to VS Code settings arrays.
.oxlintrc.json	Adds oxlint configuration file.
.oxfmtrc.json	Adds oxfmt configuration file.
.gitignore	Ignores .direnv/ for nix/direnv workflows.
.github/workflows/test.yml	Keeps CI test job but reformats workflow YAML.
.github/workflows/release.yml	Reformats workflow YAML for release pipeline.
.envrc	Adds direnv entrypoint to use the flake (use_flake).
.changeset/lucky-seas-own.md	Adds changeset for core/query/form-data dependency/test updates.
.changeset/goofy-pigs-marry.md	Adds changeset for the React hook fix.

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