{"record":{"id":"f2808468d5b249f2","repo":"nexu-io/open-design","slug":"project-files-read-json-could-not-parse-json-at","errorCode":null,"errorMessage":"project_files.read_json could not parse JSON at ${filePath}","messagePattern":"project_files\\.read_json could not parse JSON at (.+?)","errorType":"exception","errorClass":null,"httpStatus":null,"severity":"error","filePath":"apps/daemon/src/live-artifacts/refresh.ts","lineNumber":605,"sourceCode":"  const filePath = selectJsonPath(options.source.input as ProjectFilesReadJsonInput);\n  if (!filePath.endsWith('.json')) throw new Error('project_files.read_json only supports .json files');\n  const dir = projectDir(options.projectsRoot, options.projectId);\n  const target = path.resolve(dir, filePath);\n  const [dirReal, targetLinkStat] = await Promise.all([realpath(dir), lstat(target)]);\n  if (targetLinkStat.isSymbolicLink()) throw new Error('project_files.read_json does not follow symlinks');\n  const targetReal = await realpath(target);\n  if (!targetReal.startsWith(`${dirReal}${path.sep}`) && targetReal !== dirReal) {\n    throw new Error('project_files.read_json path escapes project dir');\n  }\n  const entryStat = await stat(targetReal);\n  if (!entryStat.isFile()) throw new Error('project_files.read_json path must be a file');\n  if (entryStat.size > 256 * 1024) throw new Error('project_files.read_json file exceeds 256KB');\n  if (options.signal?.aborted === true) throw options.signal.reason;\n  let parsed: BoundedJsonValue;\n  try {\n    parsed = JSON.parse(await readFile(targetReal, 'utf8')) as BoundedJsonValue;\n  } catch {\n    throw new Error(`project_files.read_json could not parse JSON at ${filePath}`);\n  }\n  return asBoundedRefreshOutput({ toolName: 'project_files.read_json', path: filePath, size: entryStat.size, json: parsed });\n}\n\nfunction compactExecOutput(value: string): string[] {\n  return value.split('\\n').map((line) => line.trimEnd()).filter(Boolean).slice(0, 100);\n}\n\nasync function runGit(projectPath: string, args: string[], signal: AbortSignal | undefined): Promise<string> {\n  try {\n    const result = await execFileAsync('git', args, { cwd: projectPath, signal, timeout: 10_000, maxBuffer: 128 * 1024 });\n    return result.stdout.toString();\n  } catch (error) {\n    const maybeError = error as { stdout?: string | Buffer; stderr?: string | Buffer; message?: string; code?: unknown };\n    if (maybeError.code === 128) return '';\n    throw new Error(maybeError.stderr?.toString().trim() || maybeError.message || 'git command failed');\n  }\n}","sourceCodeStart":587,"sourceCodeEnd":623,"githubUrl":"https://github.com/nexu-io/open-design/blob/5be4028344c2eb4c667c5a97bda8f750c5597ef7/apps/daemon/src/live-artifacts/refresh.ts#L587-L623","documentation":"executeProjectFilesReadJson (refresh.ts:601-606) reads the file and calls JSON.parse on its UTF-8 contents; if parse throws (SyntaxError), the error is wrapped with the file path so the caller knows which file failed. The catch is broad, so any parse error surfaces here.","triggerScenarios":"The target .json file exists, is under 256 KiB, is inside the project, but its contents are not valid JSON (e.g. trailing comma, single quotes, comments, JSONC/JSON5 syntax, BOM + corrupted bytes, truncated file).","commonSituations":"JSON-with-comments files (.jsonc) read as strict JSON; hand-edited JSON with a trailing comma; a truncated/corrupted file from an interrupted write; a file that is actually JSON5 or YAML.","solutions":["Validate the file with a JSON linter (e.g. `node -e \"JSON.parse(require('fs').readFileSync('f','utf8'))\"`) and fix the syntax error.","Remove comments, trailing commas, and single quotes; use strict JSON.","If you need JSONC/JSON5, convert to plain JSON before pointing read_json at it."],"exampleFix":"// before: data.json contains\n// {\n//   \"total\": 1,   // the count\n//   \"items\": [],\n// }\n// throws `project_files.read_json could not parse JSON at data.json`\n\n// after: valid JSON (no comments, no trailing comma)\n// { \"total\": 1, \"items\": [] }","handlingStrategy":"validation","validationCode":"import { readFile } from 'node:fs/promises';\nasync function assertValidJson(target: string): Promise<void> {\n  try {\n    JSON.parse(await readFile(target, 'utf8')) as unknown;\n  } catch {\n    throw new Error(`project_files.read_json could not parse JSON at ${target}`);\n  }\n}","typeGuard":null,"tryCatchPattern":"try {\n  await refreshLiveArtifact(opts);\n} catch (err) {\n  if (err instanceof Error && err.message.startsWith('project_files.read_json could not parse JSON')) {\n    // prompt the user to fix the file's JSON syntax\n  }\n  throw err;\n}","preventionTips":["Lint JSON files before committing (e.g. `node --check` or a JSON validator).","Avoid comments, trailing commas, and single quotes in files read by read_json.","Convert JSONC/JSON5/YAML to strict JSON before pointing read_json at them."],"tags":["live-artifacts","project-files","json-parse"],"backgroundTag":null,"analyzedSha":"5be4028344c2eb4c667c5a97bda8f750c5597ef7","analyzedAt":"2026-08-12T12:03:58.812Z","schemaVersion":2},"datasetVersion":"2026-08-12T18:17:37.767Z"}