Migrate to vitest

[niemyjski]

No description provided.

[Copilot]

Pull request overview

Migrates the monorepo test runner from Jest/ts-jest to Vitest, aligning test execution with a Vite-based workflow while updating linting/editor/devcontainer tooling accordingly.

Changes:

• Add root Vitest multi-project configuration and switch root + workspace test scripts to Vitest.
• Remove Jest configuration/dependencies and update tests to use vitest APIs (expect, vi, hooks).
• Update ESLint/VScode/devcontainer/docs to reflect the new testing toolchain and environments.

Reviewed changes

Copilot reviewed 35 out of 36 changed files in this pull request and generated 2 comments.

Show a summary per file

File	Description
vitest.config.ts	Adds Vitest multi-project setup for core/browser/node packages.
package.json	Switches root test scripts to Vitest; updates devDependencies (Vitest + jsdom + eslint plugin).
eslint.config.mjs	Replaces Jest ESLint integration with Vitest ESLint integration; updates ignores.
jest-resolver.cjs	Removes custom Jest resolver used for TS/ESM import compatibility.
packages/core/package.json	Removes Jest config/deps; routes tests to root Vitest project.
packages/browser/package.json	Removes Jest config/deps; routes tests to root Vitest project.
packages/node/package.json	Removes Jest config/deps; routes tests to root Vitest project; updates node engine.
packages/react/package.json	Removes Jest devDependencies from react package.
packages/core/tsconfig.json	Removes Jest types from TS config.
packages/browser/tsconfig.json	Removes Jest types from TS config.
packages/node/tsconfig.json	Removes Jest types from TS config.
packages/core/test/setup.ts	Adds shared test setup (localStorage handling/cleanup).
packages/core/test/storage/StorageTestBase.ts	Updates test helper imports to Vitest APIs.
packages/core/test/submission/TestSubmissionClient.test.ts	Migrates mocks from jest to vi.
packages/core/test/queue/DefaultEventQueue.test.ts	Updates setup assertions and refactors conditional expectations.
packages/core/test/plugins/default/EventExclusionPlugin.test.ts	Migrates to Vitest imports.
packages/core/test/plugins/default/DuplicateCheckerPlugin.test.ts	Migrates to Vitest imports.
packages/core/test/plugins/default/ConfigurationDefaultsPlugin.test.ts	Migrates to Vitest imports.
packages/core/test/plugins/EventPluginManager.test.ts	Migrates to Vitest imports.
packages/core/test/configuration/Configuration.test.ts	Reworks async test from done callback to Promise-based completion (Vitest-friendly).
packages/core/test/Utils.test.ts	Migrates to Vitest imports and simplifies assertions.
packages/core/test/ExceptionlessClient.test.ts	Migrates to Vitest imports.
packages/core/src/Utils.ts	Adjusts TypedArray handling in prune implementation.
packages/browser/test/plugins/BrowserIgnoreExtensionErrorsPlugin.test.ts	Migrates to Vitest imports.
packages/browser/test/plugins/BrowserErrorPlugin.test.ts	Migrates to Vitest imports.
packages/node/test/storage/NodeDirectoryStorage.test.ts	Makes test data directory path stable via import.meta.url + path.
example/react/src/setupTests.js	Removes Jest-specific test setup file.
example/react/package.json	Removes Jest-specific eslint config/dependency for the example app.
AGENTS.md	Updates testing framework documentation to Vitest.
.vscode/settings.json	Removes Jest extension configuration.
.vscode/launch.json	Updates launch configs to run Vitest instead of Jest.
.vscode/extensions.json	Updates recommended extensions from Jest tooling to Vitest tooling.
.devcontainer/devcontainer.json	Updates devcontainer extensions and switches install to npm ci.
.claude/agents/pr-reviewer.md	Updates guidance text to reference Vitest.
.claude/agents/engineer.md	Updates guidance text to reference Vitest.

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