{"record":{"id":"3bbaad196e9cb52d","repo":"Egonex-AI/Understand-Anything","slug":"could-not-parse-path-error-message","errorCode":null,"errorMessage":"Could not parse ${path}: ${error.message}","messagePattern":"Could not parse (.+?): (.+?)","errorType":"exception","errorClass":null,"httpStatus":null,"severity":"error","filePath":"understand-anything-plugin/skills/understand/prepare-incremental.mjs","lineNumber":109,"sourceCode":"\nfunction isGeneratedArtifact(path) {\n  return GENERATED_ROOTS.has(path.split('/')[0]);\n}\n\nfunction isImportResolverConfig(path) {\n  const name = path.split('/').at(-1);\n  return name === 'tsconfig.json'\n    || name === 'go.mod'\n    || name === 'composer.json'\n    || name === 'Package.swift';\n}\n\nfunction readJson(path, fallback = null) {\n  if (!existsSync(path)) return fallback;\n  try {\n    return JSON.parse(readFileSync(path, 'utf-8'));\n  } catch (error) {\n    throw new Error(`Could not parse ${path}: ${error.message}`);\n  }\n}\n\nfunction atomicWriteJson(path, value) {\n  const tempPath = `${path}.tmp-${process.pid}-${Date.now()}`;\n  writeFileSync(tempPath, `${JSON.stringify(value, null, 2)}\\n`, 'utf-8');\n  renameSync(tempPath, path);\n}\n\nfunction clearIncrementalScratch(intermediateDir) {\n  const exactNames = new Set([\n    'assembled-graph.json',\n    'batch-existing.json',\n    'batches.json',\n    'layers.json',\n    'tour.json',\n    'incremental-symbol-report.json',\n    'incremental-edge-candidates.json',","sourceCodeStart":91,"sourceCodeEnd":127,"githubUrl":"https://github.com/Egonex-AI/Understand-Anything/blob/07edf82a04371b6f69779b067bdc8a1a8753a9db/understand-anything-plugin/skills/understand/prepare-incremental.mjs#L91-L127","documentation":"readJson in prepare-incremental.mjs reads a file and parses it as JSON. If the file exists but is not valid JSON (or is not valid UTF-8), the underlying SyntaxError is wrapped as `Could not parse <path>: <message>`. The library treats a malformed state file as fatal rather than silently falling back, because the incremental plan/fingerprint data must be trusted.","triggerScenarios":"Calling readJson on any .ua/intermediate/ or .ua/ state file (e.g. incremental-plan.json, fingerprint-patch.json, knowledge-graph.json) whose contents are truncated, hand-edited with invalid JSON syntax, corrupted by a crashed non-atomic writer, or saved with an unexpected encoding/BOM.","commonSituations":"A previous run was killed mid-write before atomicWriteJson's rename completed (legacy writers); the user manually edited knowledge-graph.json and introduced a syntax error; a sync/backup tool truncated the file; the file was written with a UTF-16/BOM encoding that JSON.parse rejects.","solutions":["Open the path named in the error and fix the JSON syntax error (or restore it from version control/backup); .ua/ artifacts are safe to regenerate, while knowledge-graph.json should be restored from git if tracked.","Delete the corrupted state file(s) and re-run the pipeline from the beginning (prepare-incremental.mjs or full /understand) so they are regenerated from scratch.","If the whole .ua/ state is suspect, run the full /understand pipeline, which rebuilds knowledge-graph.json and the incremental baseline.","Validate the file with a JSON linter (e.g. `node -e \"JSON.parse(require('fs').readFileSync('<path>','utf8'))\"`) to locate the exact syntax problem."],"exampleFix":"// before: hand-edited knowledge-graph.json left a trailing comma\n{ \"nodes\": [...], \"edges\": [...], }\n\n// after: remove the trailing comma (or restore from git)\n{ \"nodes\": [...], \"edges\": [...] }","handlingStrategy":"try-catch","validationCode":"// pre-check state files before invoking the pipeline\nimport { readFileSync, existsSync } from 'node:fs';\nfor (const f of ['.ua/incremental-plan.json', '.ua/knowledge-graph.json'].map(p => join(root, p))) {\n  if (existsSync(f)) JSON.parse(readFileSync(f, 'utf-8')); // throws early with position info\n}","typeGuard":"function isValidJsonFile(path) {\n  try { JSON.parse(readFileSync(path, 'utf-8')); return true; }\n  catch { return false; }\n}","tryCatchPattern":"try {\n  await prepareIncremental(projectRoot);\n} catch (err) {\n  const m = /Could not parse (.+?):/.exec(err.message);\n  if (m) {\n    console.error(`Corrupt state file ${m[1]}; deleting and re-running from scratch.`);\n    unlinkSync(m[1]);\n    await prepareIncremental(projectRoot);\n  } else throw err;\n}","preventionTips":["Never hand-edit .ua/ JSON artifacts; edit the source project and re-run the pipeline.","Only write state files via the provided atomic writers (atomicWriteJson), never with ad-hoc non-atomic scripts.","Track .ua/knowledge-graph.json in git so a corrupted copy can be restored.","Validate JSON state files after any unexpected process termination before the next incremental run."],"tags":["json","parse-error","corrupt-state","pipeline"],"backgroundTag":"json-parse-error","analyzedSha":"07edf82a04371b6f69779b067bdc8a1a8753a9db","analyzedAt":"2026-09-07T23:20:10.829Z","contentChangedAt":"2026-09-07T23:20:10.829Z","schemaVersion":2},"datasetVersion":"2026-09-14T00:17:10.932Z"}