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import type * as dag from '../dag/mod';import * as db from '../db/mod';import * as sync from './mod';import type {ReadonlyJSONValue} from '../json';import type {Hash} from '../hash';
export type RebaseOpts = {  basis: Hash;  original: Hash;};
export async function validateRebase(  opts: RebaseOpts,  dagRead: dag.Read,  mutatorName: string,  // eslint-disable-next-line @typescript-eslint/no-unused-vars  _args: ReadonlyJSONValue | undefined,): Promise<void> {  // Ensure the rebase commit is going on top of the current sync head.  const syncHeadHash = await dagRead.getHead(sync.SYNC_HEAD_NAME);  if (syncHeadHash !== opts.basis) {    throw new Error(      `WrongSyncHeadJSLogInfo: sync head is ${syncHeadHash}, transaction basis is ${opts.basis}`,    );  }
  // Ensure rebase and original commit mutator names match.  const [, original] = await db.readCommit(    db.whenceHash(opts.original),    dagRead,  );  if (original.isLocal()) {    const lm = original.meta;    if (lm.mutatorName !== mutatorName) {      throw new Error(        `Inconsistent mutator: original: ${lm.mutatorName}, request: ${mutatorName}`,      );    }  } else {    throw new Error('Internal programmer error: Commit is not a local commit');  }
  // Ensure rebase and original commit mutation ids names match.  const [, basis] = await db.readCommit(db.whenceHash(opts.basis), dagRead);  if (basis.nextMutationID !== original.mutationID) {    throw new Error(      `Inconsistent mutation ID: original: ${original.mutationID}, next: ${basis.nextMutationID}`,    );  }
  // TODO: temporarily skipping check that args are the same.  // https://github.com/rocicorp/repc/issues/151}