The browser environment replaces Node's Event with JSDOM's. Node's WebSocket
dispatches through Node's EventTarget, which rejects that Event, so no open,
message or error reached a listener and no connection ever came up: an
ApiPromise against a live node never became ready. JSDOM's WebSocket now
replaces Node's, as Event and CustomEvent already do. A spec completes a
handshake with a local server and receives a frame.
react-tooltip, on hover, called getComputedStyle, MutationObserver and
ResizeObserver, none of which the browser env exposed. The env now
also carries the UI event constructors (MouseEvent, KeyboardEvent,
FocusEvent and the rest), DOMRect, MutationObserver and a bound
getComputedStyle from JSDOM, grouped by kind.
JSDOM has no ResizeObserver. It does no layout either, so no element
ever changes size; the env's ResizeObserver accepts observe() and never
calls back, which is what a real one would do on a page that never
resizes.
The browser env exposed the HTML*Element constructors but not the
classes above them, so a library checking `instanceof Element` (as
react-tooltip does on every hover) threw "Element is not defined".
Node, Element, Document, DocumentFragment, Text, ShadowRoot and
SVGElement now come from JSDOM.
expect().toContain and .not.toContain were stubs. A string contains a
substring; any other iterable contains the item itself, not a
deep-equal copy, as in jest.
Globals were only set where Node had none, and Node defines Event and
CustomEvent itself. Code running in the browser env therefore built
Node events, which a JSDOM node refuses: react-tooltip's
window.dispatchEvent(new CustomEvent(...)) threw "parameter 1 is not of
type 'Event'". In the browser env these two now come from JSDOM, as they
do under jest-environment-jsdom.
- Updated all copyright headers from 2025 to 2026 (system date shows 2026)
- Added build output files to eslint ignore list in packages/dev/config/eslint.js
- Added build output patterns to .gitignore
- Ignored: packages/*/*.{d.ts,js,mjs,cjs}, packages/*/cjs/**, packages/*/env/**,
packages/*/rootJs/**, packages/*/rootStatic/**
- Successfully resolved 521 lint errors by properly ignoring generated files
- Build outputs should not be linted (source files are linted instead)
- Lint and build now pass successfully
Satoshi Qazi Muhammed