Bug: Getting 409 Error for CustomPouchError with pouchdb-browser

[umakant-prismhr]

React version:
17.0.2

Steps To Reproduce

1. Calling this code giving exception -

2. updateCompanyConfiguration({
   _rev:
   companyConfigurations && companyConfigurations._rev
   ? companyConfigurations._rev
   : "",
   ...$_companyConfiguration,
   })
   .then((response) => {
   if (response.ok) {
   console.log(response);
   }
   })
   .catch((error) => {
   console.log(error);
   });

3. Code is giving exception-
   export function updateCompanyConfiguration(doc) {
   let _rev = doc._rev;
   delete doc._rev;
   return companyConfigurationDB.put({
   _id: "1",
   _rev: _rev,
   ...doc,
   });
   }

4. Exception
   Exception: at new CustomPouchError (http://localhost:3000/static/js/vendors~main.chunk.js:162322:20)
   at createError (http://localhost:3000/static/js/vendors~main.chunk.js:162331:10)
   at updateDoc (http://localhost:3000/static/js/vendors~main.chunk.js:165828:15)
   at nextDoc (http://localhost:3000/static/js/vendors~main.chunk.js:165927:9)
   at http://localhost:3000/static/js/vendors~main.chunk.js:165936:5
   at Map.forEach ()
   at processDocs (http://localhost:3000/static/js/vendors~main.chunk.js:165913:13)
   at idbProcessDocs (http://localhost:3000/static/js/vendors~main.chunk.js:166255:5)
   at checkDone (http://localhost:3000/static/js/vendors~main.chunk.js:166273:9)
   at IDBRequest.readMetadata (http://localhost:3000/static/js/vendors~main.chunk.js:166281:7)

Link to code example:

The current behavior

The expected behavior

[yeomgahui]

This doesn't appear to be a React issue — it's related to how PouchDB is being used.

You're trying to access _rev from companyConfigurations._rev,
but if companyConfigurations is actually a PouchDB database instance (not a document),
then _rev will be undefined.

In PouchDB, _rev is a property of a document, not the database itself.
To get a valid _rev, you need to fetch the document first using get():

companyConfigDB.get("1").then(doc => {
  return companyConfigDB.put({
    _id: "1",
    _rev: doc._rev,
    ...updatedFields
  });
});

Hope this helps!