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Fixed revision issue for old revisions

pull/5107/head
Laurent Cozic 2021-06-20 13:59:58 +01:00
parent d13b1f96ba
commit 9323caf2f1
1 changed files with 4 additions and 1 deletions
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5
packages/lib/models/Revision.ts
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@ -45,7 +45,10 @@ export default class Revision extends BaseItem {
if (this.isLegacyPatch(patch)) {
return this.applyTextPatchLegacy(text, patch);
} else {
const result = dmp.patch_apply(JSON.parse(patch), text);
// An empty patch should be '[]', but legacy data may be just "".
// However an empty string would make JSON.parse fail so we set it
// to '[]'.
const result = dmp.patch_apply(JSON.parse(patch ? patch : '[]'), text);
if (!result || !result.length) throw new Error('Could not apply patch');
return result[0];
}