{"record":{"id":"419bdeed054f7074","repo":"pcottle/learnGitBranching","slug":"git-result-uptodate","errorCode":null,"errorMessage":"git-result-uptodate","messagePattern":"git-result-uptodate","errorType":"validation","errorClass":"CommandResult","httpStatus":null,"severity":"warning","filePath":"src/js/git/index.js","lineNumber":2619,"sourceCode":"  if (!options.dontResolvePromise) {\n    this.animationQueue.thenFinish(chain);\n  }\n  return chain;\n};\n\nGitEngine.prototype.mergeCheck = function(targetSource, currentLocation) {\n  var sameCommit = this.getCommitFromRef(targetSource) ===\n    this.getCommitFromRef(currentLocation);\n  return this.isUpstreamOf(targetSource, currentLocation) || sameCommit;\n};\n\nGitEngine.prototype.merge = function(targetSource, options) {\n  options = options || {};\n  var currentLocation = 'HEAD';\n\n  // first some conditions\n  if (this.mergeCheck(targetSource, currentLocation)) {\n    throw new CommandResult({\n      msg: intl.str('git-result-uptodate')\n    });\n  }\n\n  if (this.isUpstreamOf(currentLocation, targetSource) && !options.noFF && !options.squash) {\n    // just set the target of this current location to the source\n    this.setTargetLocation(currentLocation, this.getCommitFromRef(targetSource));\n    // get fresh animation to happen\n    this.command.setResult(intl.str('git-result-fastforward'));\n    return;\n  }\n\n  // now the part of making a merge commit\n  var parent1 = this.getCommitFromRef(currentLocation);\n  var parent2 = this.getCommitFromRef(targetSource);\n\n  // we need a fancy commit message\n  var msg = intl.str(","sourceCodeStart":2601,"sourceCodeEnd":2637,"githubUrl":"https://github.com/pcottle/learnGitBranching/blob/5b09d0ff9678cad164f5a7488a279a44f90d7256/src/js/git/index.js#L2601-L2637","documentation":"merge() pre-flight: if mergeCheck reports the target source is already an ancestor of HEAD, the merge is a no-op fast-forward situation and 'already up to date' is thrown as a CommandResult. It mirrors git's 'Already up to date.' output.","triggerScenarios":"Calling merge where this.mergeCheck(targetSource, 'HEAD') is true — e.g. git merge main while HEAD already contains main's commits.","commonSituations":"Merging a branch twice; merging an ancestor; scripted solutions that merge regardless of state.","solutions":["Skip the merge — the branch is already incorporated","Merge the other direction (merge the branch that has new commits into the current one)","Catch the CommandResult and continue"],"exampleFix":"// before\ngit merge main; git merge main; // second is no-op\n// after\ngit checkout main\ngit merge feature","handlingStrategy":"try-catch","validationCode":"if (engine.mergeCheck(targetSource, 'HEAD')) { /* already up to date; skip */ }","typeGuard":null,"tryCatchPattern":"try { engine.merge(t); } catch (e) { if (e instanceof CommandResult && /up to date/i.test(e.msg)) return; throw e; }","preventionTips":["Check ancestry direction before merging","Idempotent scripts should tolerate no-op merges"],"tags":["git","merge","up-to-date"],"backgroundTag":"git-already-up-to-date","analyzedSha":"5b09d0ff9678cad164f5a7488a279a44f90d7256","analyzedAt":"2026-08-27T13:53:49.057Z","schemaVersion":2},"datasetVersion":"2026-08-27T19:17:21.184Z"}