object-keys.js37 lines
mainRaw// @validatePreserveExistingMemoizationGuarantees
import {useMemo} from 'react';
import {Stringify} from 'shared-runtime';
// derived from https://github.com/facebook/react/issues/32261
function Component({items}) {
const record = useMemo(
() =>
Object.fromEntries(
items.map(item => [item.id, ref => <Stringify ref={ref} {...item} />])
),
[items]
);
// Without a declaration for Object.entries(), this would be assumed to mutate
// `record`, meaning existing memoization couldn't be preserved
return (
<div>
{Object.keys(record).map(id => (
<Stringify key={id} render={record[id]} />
))}
</div>
);
}
export const FIXTURE_ENTRYPOINT = {
fn: Component,
params: [
{
items: [
{id: '0', name: 'Hello'},
{id: '1', name: 'World!'},
],
},
],
};
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