test: migrate from jest to vitest

[madhavilosetty-intel]

Replaces jest/ts-jest with vitest 4 + @vitest/coverage-v8.
All 326 tests pass, verified per-suite against the jest baseline rather than on the total alone.
The built dist is byte-identical to HEAD, so no shipped code changes.

Coverage baseline note

The reported coverage total drops versus the jest-era number. Jest had no collectCoverageFrom, so it only instrumented files the tests actually loaded; vitest's v8 provider counts every file matched by coverage.include (src/core/**), including files no test imports (e.g. Desktop.ts at 0%). This is a one-time denominator change — the same code is tested as before, per-suite coverage was verified against the jest baseline, and no code regressed. The memory-hungry RLEDecoder/ImageHelper suites stay excluded from the coverage run (as under jest), with their targets excluded from the denominator.

PR Checklist

• Unit Tests have been added for new changes
• API tests have been updated if applicable
• All commented code has been removed
• If you've added a dependency, you've ensured license is compatible with Apache 2.0 and clearly outlined the added dependency.

What are you changing?

Anything the reviewer should know when reviewing this PR?

If the there are associated PRs in other repositories, please link them here (i.e. device-management-toolkit/repo#365 )

[Copilot]

Pull request overview

This PR migrates the project’s test runner from Jest/ts-jest to Vitest (with v8 coverage), updating configuration, CI, and the existing unit tests to run under the new framework without changing shipped runtime output.

Changes:

• Adds Vitest configuration + setup (jsdom env, single-fork execution, v8 coverage, junit output).
• Updates TypeScript config and the test suite to use Vitest globals / vi mocks instead of Jest APIs.
• Updates CI/workflow and tooling config (npm scripts, eslint ignores) and removes Jest config.

Reviewed changes

Copilot reviewed 22 out of 25 changed files in this pull request and generated 1 comment.

Show a summary per file

File	Description
vitest.setup.ts	Adds jsdom canvas getContext stub to avoid native canvas dependency.
vitest.config.ts	Defines Vitest include patterns, jsdom env, reporters, and v8 coverage config.
tsconfig.json	Enables Vitest globals typing and adjusts TS compiler options for the new test setup.
tsconfig.build.json	Updates build exclusions for the new Vitest setup file.
src/test/zlib.spec.js	Migrates Jest mock usage to vi and switches module import style for Vitest.
src/test/serverinit.spec.ts	Removes Jest done callback pattern; uses assertion counting instead.
src/test/securityresponse.spec.ts	Removes Jest done callback pattern; uses assertion counting instead.
src/test/securityoptions.spec.ts	Removes Jest done callback pattern; uses assertion counting instead.
src/test/rledecoder.spec.ts	Updates environment annotation and replaces Jest mocks with vi mocks.
src/test/kvmui.test.ws.ts	Adjusts config typing and WebSocket constructor typing for Vitest/TS.
src/test/keyboardhelper.test.ts	Migrates spies/mocks to Vitest (vi) and updates spy typing.
src/test/keyboardhelper.spec.ts	Updates environment annotation and replaces Jest spy utilities with Vitest equivalents.
src/test/imagehelper.spec.ts	Updates environment annotation and replaces Jest mocks with vi mocks.
src/test/iderDataProcessor.spec.ts	Migrates spies/mocks to Vitest and updates spy typing.
src/test/handshakestate.spec.ts	Removes Jest done callback pattern; uses assertion counting instead.
src/test/framebufferbellservercuttext.spec.ts	Removes Jest done callback pattern; uses assertion counting instead.
src/test/encoding.spec.ts	Removes Jest done callback pattern; uses assertion counting instead.
src/test/amtredirector.spec.ts	Replaces Jest mocks with vi mocks.
src/test/amtider.spec.ts	Replaces Jest mocks/spies with Vitest equivalents; updates mock typings.
src/test/amtdesktop.spec.ts	Replaces Jest mocks/spies with Vitest equivalents.
package.json	Swaps Jest scripts/deps for Vitest + coverage-v8; adds typecheck.
jest.config.js	Removes Jest configuration file.
eslint.config.cjs	Ignores generated dist/** and coverage/**.
.github/workflows/node.js.yml	Updates CI to run typecheck, Vitest test/coverage, and renames artifact step.

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[Copilot]

Pull request overview

Copilot reviewed 22 out of 25 changed files in this pull request and generated 3 comments.

Suppressed comments (1)

vitest.setup.ts:41

• The mocked canvas context currently hard-codes ctx.canvas to a plain object, so ctx.canvas !== the actual HTMLCanvasElement and width/height mutations don't affect the element. Returning the real canvas element ("this") makes code like ImageHelper.setRotation behave closer to production.

  canvas: {
    height: 768,
    width: 1366
  }
}) as unknown as HTMLCanvasElement['getContext']