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- Remove IE support (attachEvent/detachEvent) - Remove SUPPORTS_PASSIVE feature detection (all modern browsers support it) - Always pass options object to addEventListener - Update engines.node to >=20 (required by jsdom 27) - Update peerDependencies to React >=16.8 - Add exports field for modern Node.js resolution
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Summary
Quick wins to modernize the codebase and drop legacy browser support.
Changes
Code simplification
attachEvent/detachEventfallbacks (IE is dead)SUPPORTS_PASSIVEcheck - All modern browsers support passive event listenerson/offfunctions - Now just simple wrappers aroundaddEventListener/removeEventListenerPackage updates
engines.node:>=4→>=20(required by jsdom 27 in devDeps)peerDependencies:react >0.14→react >=16.8(hooks era minimum)exportsfield - Modern Node.js module resolutionTests
passiveoptionBreaking Changes
addEventListener)Test plan