[internal] Bump React 19 in packages#44671
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DiegoAndai wants to merge 2 commits intomui:masterfrom
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Dec 6, 2024
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| expect(container.firstChild.textContent).to.equal('light:2'); // 2 because of double render within strict mode | ||
| expect(container.firstChild.textContent).to.equal('light'); | ||
| expect(effectRunCount).to.equal(reactMajor >= 19 ? 2 : 3); |
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This test was recently added, that's why we didn't cover it before in #42824.
The previous approach didn't work with React 19, probably due to the changes to strict mode. The difference in events between 18 and 19 is the following:
render
render
run effect
-run effect (this one doesn't run in React 19)
render
render
run effectAnd for both, the last effect run wasn't being registered in the rendered content. That's why with React 18 the result was light:2 even though the effect runs 3 times. For React 19, the effect is runs 2 times.
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This PR picks all the bumps from #42824 except those related to docs infra. This way, we won't have to revert the package's dependencies if issues in the docs infra are found.