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fix(studio): enforce optimistic file concurrency (#2156)

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* fix(studio): enforce optimistic file concurrency

* fix(studio): harden conditional file writes

* fix(studio): honor explicit file preconditions

* test(producer): allow zero-ms encode timing
This commit is contained in:
James Russo
2026-07-15 18:07:04 -04:00
committed by GitHub
parent 35e623b4f3
commit 2417293dab
34 changed files with 838 additions and 72 deletions
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packages/studio/src/utils/sdkEditTransaction.ts
+5 -4
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@@ -37,7 +37,7 @@ export interface CutoverDeps {
* Must be bound to one project. Its identity plus path scopes the shared
* mutation queue used by every whole-file writer in that project.
*/
writeProjectFile: (path: string, content: string) => Promise<void>;
writeProjectFile: (path: string, content: string, expectedContent?: string) => Promise<void>;
reloadPreview: () => void;
domEditSaveTimestampRef: MutableRefObject<number>;
refresh?: (after: string) => void;
@@ -148,13 +148,14 @@ function isCutoverResult(value: CandidateEdit | CutoverResult): value is Cutover
async function rollbackWrite(
targetPath: string,
originalContent: string,
expectedCurrentContent: string,
deps: CutoverDeps,
cause: Error,
): Promise<Error> {
try {
deps.domEditSaveTimestampRef.current = Date.now();
markSelfWrite(targetPath, originalContent);
await deps.writeProjectFile(targetPath, originalContent);
await deps.writeProjectFile(targetPath, originalContent, expectedCurrentContent);
return cause;
} catch (rollbackError) {
return new AggregateError(
@@ -174,7 +175,7 @@ async function writeAndRecord(
deps.domEditSaveTimestampRef.current = Date.now();
markSelfWrite(targetPath, after);
try {
await deps.writeProjectFile(targetPath, after);
await deps.writeProjectFile(targetPath, after, originalContent);
} catch (error) {
return asCutoverError(error);
}
@@ -188,7 +189,7 @@ async function writeAndRecord(
});
return null;
} catch (error) {
return rollbackWrite(targetPath, originalContent, deps, asCutoverError(error));
return rollbackWrite(targetPath, originalContent, after, deps, asCutoverError(error));
}
}