Bump jest-environment-jsdom/~30.3.0

[cmalonzo]

Bump jest-environment-jsdom to 30.3.0

Addresses: CVE GHSA-vpq2-c234-7xj6

Summary

Upgrades all Jest-related dependencies from ~29.5.0 to ~30.3.0 across heft-jest-plugin and the associated rig packages. This brings in jest-environment-jsdom 30.3.0, which ships with jsdom 26 instead of jsdom 21.

Package version bumps

Package	From	To
@jest/core, @jest/reporters, @jest/transform	~29.5.0	~30.3.0
jest-config, jest-resolve, jest-snapshot	~29.5.0	~30.3.0
jest-environment-jsdom	~29.5.0	~30.3.0
jest-environment-node	~29.5.0	~30.3.0

Affected packages: @rushstack/heft-jest-plugin, @rushstack/heft-web-rig, @rushstack/heft-node-rig, @rushstack/heft-vscode-extension-rig, heft-jest-preset-test, heft-jest-reporters-test.

Removed: punycode injection workaround

The previous release added patched-jest-environment-jsdom.ts, which injected the punycode npm package into Node's module cache on Node ≥ 22 to suppress DEP0040 deprecation warnings. This was needed because jsdom 21 → whatwg-url → tr46 called require('punycode') (the deprecated built-in).

jsdom 26 no longer triggers DEP0040. The tr46 dependency was updated in an earlier jsdom release to use require('punycode/') (trailing slash), which resolves the npm userland package instead of the deprecated Node.js built-in. Verified by running jsdom instantiation with --trace-deprecation on Node 24 — no DEP0040 warning fires.

As a result:

• src/exports/patched-jest-environment-jsdom.ts has been deleted
• The redirect logic in JestPlugin.ts that intercepted testEnvironment: "jest-environment-jsdom" and rerouted to the patched file has been removed
• The punycode package has been removed from dependencies

Breaking changes for consumers

Jest 30 introduces several breaking changes that consumers upgrading to this version of heft-jest-plugin should be aware of:

• window.location is now immutable in jsdom — Object.defineProperty(window, 'location', ...) throws. Use window.history.pushState() / replaceState() instead.
• Deprecated matcher aliases removed — replace toBeCalled() → toHaveBeenCalled(), toBeCalledWith() → toHaveBeenCalledWith(), toThrowError() → toThrow().
• Snapshots must be regenerated — error cause is now included in snapshot output.
• Node.js minimum is 18, TypeScript minimum is 5.4.