babel/packages/babel-generator/test/fixtures/sourcemaps/real-world-babel-file1/source-map.json

{
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    "fixtures/sourcemaps/real-world-babel-file1/input.ts"
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    "// From packages\\babel-cli\\src\\babel\\watcher.ts\n\nimport { createRequire } from \"module\";\nimport path from \"path\";\nimport type { WatchOptions, FSWatcher } from \"chokidar\";\n\nconst fileToDeps = new Map<string, Set<string>>();\nconst depToFiles = new Map<string, Set<string>>();\n\nlet isWatchMode = false;\nlet watcher: FSWatcher;\nconst watchQueue = new Set<string>();\nlet hasStarted = false;\n\nexport function enable({ enableGlobbing }: { enableGlobbing: boolean }) {\n  isWatchMode = true;\n\n  const { FSWatcher } = requireChokidar();\n\n  const options: WatchOptions = {\n    disableGlobbing: !enableGlobbing,\n    persistent: true,\n    ignoreInitial: true,\n    awaitWriteFinish: {\n      stabilityThreshold: 50,\n      pollInterval: 10,\n    },\n  };\n  watcher = new FSWatcher(options);\n\n  watcher.on(\"unlink\", unwatchFile);\n}\n\nexport function startWatcher() {\n  hasStarted = true;\n\n  for (const dep of watchQueue) {\n    watcher.add(dep);\n  }\n  watchQueue.clear();\n\n  watcher.on(\"ready\", () => {\n    console.log(\"The watcher is ready.\");\n  });\n}\n\nexport function watch(filename: string): void {\n  if (!isWatchMode) {\n    throw new Error(\n      \"Internal Babel error: .watch called when not in watch mode.\",\n    );\n  }\n\n  if (!hasStarted) {\n    watchQueue.add(path.resolve(filename));\n  } else {\n    watcher.add(path.resolve(filename));\n  }\n}\n\n/**\n * Call @param callback whenever a dependency (source file)/\n * external dependency (non-source file) changes.\n *\n * Handles mapping external dependencies to their corresponding\n * dependencies.\n */\nexport function onFilesChange(\n  callback: (filenames: string[], event: string, cause: string) => void,\n): void {\n  if (!isWatchMode) {\n    throw new Error(\n      \"Internal Babel error: .onFilesChange called when not in watch mode.\",\n    );\n  }\n\n  watcher.on(\"all\", (event, filename) => {\n    if (event !== \"change\" && event !== \"add\") return;\n\n    const absoluteFile = path.resolve(filename);\n    callback(\n      [absoluteFile, ...(depToFiles.get(absoluteFile) ?? [])],\n      event,\n      absoluteFile,\n    );\n  });\n}\n\nexport function updateExternalDependencies(\n  filename: string,\n  dependencies: Set<string>,\n) {\n  if (!isWatchMode) return;\n\n  // Use absolute paths\n  const absFilename = path.resolve(filename);\n  const absDependencies = new Set(\n    Array.from(dependencies, dep => path.resolve(dep)),\n  );\n\n  const deps = fileToDeps.get(absFilename);\n  if (deps) {\n    for (const dep of deps) {\n      if (!absDependencies.has(dep)) {\n        removeFileDependency(absFilename, dep);\n      }\n    }\n  }\n  for (const dep of absDependencies) {\n    let deps = depToFiles.get(dep);\n    if (!deps) {\n      depToFiles.set(dep, (deps = new Set()));\n\n      if (!hasStarted) {\n        watchQueue.add(dep);\n      } else {\n        watcher.add(dep);\n      }\n    }\n\n    deps.add(absFilename);\n  }\n\n  fileToDeps.set(absFilename, absDependencies);\n}\n\nfunction removeFileDependency(filename: string, dep: string) {\n  const deps = depToFiles.get(dep) as Set<string>;\n  deps.delete(filename);\n\n  if (deps.size === 0) {\n    depToFiles.delete(dep);\n\n    if (!hasStarted) {\n      watchQueue.delete(dep);\n    } else {\n      watcher.unwatch(dep);\n    }\n  }\n}\n\nfunction unwatchFile(filename: string) {\n  const deps = fileToDeps.get(filename);\n  if (!deps) return;\n\n  for (const dep of deps) {\n    removeFileDependency(filename, dep);\n  }\n  fileToDeps.delete(filename);\n}\n\nfunction requireChokidar(): any {\n  const require = createRequire(import.meta.url);\n\n  try {\n    return process.env.BABEL_8_BREAKING\n      ? require(\"chokidar\")\n      : parseInt(process.versions.node) >= 8\n      ? require(\"chokidar\")\n      : require(\"@nicolo-ribaudo/chokidar-2\");\n  } catch (err) {\n    console.error(\n      \"The optional dependency chokidar failed to install and is required for \" +\n        \"--watch. Chokidar is likely not supported on your platform.\",\n    );\n    throw err;\n  }\n}"
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