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Transform $ReadOnlyArray to ReadonlyArray 17/n #55109
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marcoww6
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Summary: Pull Request resolved: facebook#55109 We are transforming the following utility types to be more consistent with typescript and better AI integration: * `$NonMaybeType` -> `NonNullable` * `$ReadOnly` -> `Readonly` * `$ReadOnlyArray` -> `ReadonlyArray` * `$ReadOnlyMap` -> `ReadonlyMap` * `$ReadOnlySet` -> `ReadonlySet` * `$Keys` -> `keyof` * `$Values` -> `Values` * `mixed` -> `unknown` See details in https://fb.workplace.com/groups/flowlang/permalink/1837907750148213/. drop-conflicts Command: `js1 flow-runner codemod flow/transformUtilityType --legacy-type='$ReadOnlyArray'` Reviewed By: SamChou19815 Differential Revision: D90402950
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marcoww6
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Summary: Pull Request resolved: facebook#55109 We are transforming the following utility types to be more consistent with typescript and better AI integration: * `$NonMaybeType` -> `NonNullable` * `$ReadOnly` -> `Readonly` * `$ReadOnlyArray` -> `ReadonlyArray` * `$ReadOnlyMap` -> `ReadonlyMap` * `$ReadOnlySet` -> `ReadonlySet` * `$Keys` -> `keyof` * `$Values` -> `Values` * `mixed` -> `unknown` See details in https://fb.workplace.com/groups/flowlang/permalink/1837907750148213/. drop-conflicts Command: `js1 flow-runner codemod flow/transformUtilityType --legacy-type='$ReadOnlyArray'` Reviewed By: SamChou19815 Differential Revision: D90402950
Summary: Pull Request resolved: facebook#55109 We are transforming the following utility types to be more consistent with typescript and better AI integration: * `$NonMaybeType` -> `NonNullable` * `$ReadOnly` -> `Readonly` * `$ReadOnlyArray` -> `ReadonlyArray` * `$ReadOnlyMap` -> `ReadonlyMap` * `$ReadOnlySet` -> `ReadonlySet` * `$Keys` -> `keyof` * `$Values` -> `Values` * `mixed` -> `unknown` See details in https://fb.workplace.com/groups/flowlang/permalink/1837907750148213/. drop-conflicts Command: `js1 flow-runner codemod flow/transformUtilityType --legacy-type='$ReadOnlyArray'` Reviewed By: SamChou19815 Differential Revision: D90402950
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meta-codesync bot
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Jan 14, 2026
Summary: X-link: facebook/react-native#55109 We are transforming the following utility types to be more consistent with typescript and better AI integration: * `$NonMaybeType` -> `NonNullable` * `$ReadOnly` -> `Readonly` * `$ReadOnlyArray` -> `ReadonlyArray` * `$ReadOnlyMap` -> `ReadonlyMap` * `$ReadOnlySet` -> `ReadonlySet` * `$Keys` -> `keyof` * `$Values` -> `Values` * `mixed` -> `unknown` See details in https://fb.workplace.com/groups/flowlang/permalink/1837907750148213/. drop-conflicts Command: `js1 flow-runner codemod flow/transformUtilityType --legacy-type='$ReadOnlyArray'` Reviewed By: SamChou19815 Differential Revision: D90402950 fbshipit-source-id: d338ad7997728d40457b1199c3bd5dcd245a39c3
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Summary:
We are transforming the following utility types to be more consistent with typescript and better AI integration:
$NonMaybeType->NonNullable$ReadOnly->Readonly$ReadOnlyArray->ReadonlyArray$ReadOnlyMap->ReadonlyMap$ReadOnlySet->ReadonlySet$Keys->keyof$Values->Valuesmixed->unknownSee details in https://fb.workplace.com/groups/flowlang/permalink/1837907750148213/.
drop-conflicts
Command:
js1 flow-runner codemod flow/transformUtilityType --legacy-type='$ReadOnlyArray'Reviewed By: SamChou19815
Differential Revision: D90402950