1 files changed, 129 insertions, 0 deletions
diff --git a/node_modules/@babel/cli/lib/babel/watcher.js b/node_modules/@babel/cli/lib/babel/watcher.js
new file mode 100644
index 00000000..203e8ca8
--- /dev/null
+++ b/node_modules/@babel/cli/lib/babel/watcher.js
@@ -0,0 +1,129 @@
+"use strict";
+
+Object.defineProperty(exports, "__esModule", {
+  value: true
+});
+exports.enable = enable;
+exports.onFilesChange = onFilesChange;
+exports.startWatcher = startWatcher;
+exports.updateExternalDependencies = updateExternalDependencies;
+exports.watch = watch;
+function _path() {
+  const data = require("path");
+  _path = function () {
+    return data;
+  };
+  return data;
+}
+const fileToDeps = new Map();
+const depToFiles = new Map();
+let isWatchMode = false;
+let watcher;
+const watchQueue = new Set();
+let hasStarted = false;
+function enable({
+  enableGlobbing
+}) {
+  isWatchMode = true;
+  const {
+    FSWatcher
+  } = requireChokidar();
+  const options = {
+    disableGlobbing: !enableGlobbing,
+    persistent: true,
+    ignoreInitial: true,
+    awaitWriteFinish: {
+      stabilityThreshold: 50,
+      pollInterval: 10
+    }
+  };
+  watcher = new FSWatcher(options);
+  watcher.on("unlink", unwatchFile);
+}
+function startWatcher() {
+  hasStarted = true;
+  for (const dep of watchQueue) {
+    watcher.add(dep);
+  }
+  watchQueue.clear();
+  watcher.on("ready", () => {
+    console.log("The watcher is ready.");
+  });
+}
+function watch(filename) {
+  if (!isWatchMode) {
+    throw new Error("Internal Babel error: .watch called when not in watch mode.");
+  }
+  if (!hasStarted) {
+    watchQueue.add(_path().resolve(filename));
+  } else {
+    watcher.add(_path().resolve(filename));
+  }
+}
+function onFilesChange(callback) {
+  if (!isWatchMode) {
+    throw new Error("Internal Babel error: .onFilesChange called when not in watch mode.");
+  }
+  watcher.on("all", (event, filename) => {
+    var _depToFiles$get;
+    if (event !== "change" && event !== "add") return;
+    const absoluteFile = _path().resolve(filename);
+    callback([absoluteFile, ...((_depToFiles$get = depToFiles.get(absoluteFile)) != null ? _depToFiles$get : [])], event, absoluteFile);
+  });
+}
+function updateExternalDependencies(filename, dependencies) {
+  if (!isWatchMode) return;
+  const absFilename = _path().resolve(filename);
+  const absDependencies = new Set(Array.from(dependencies, dep => _path().resolve(dep)));
+  const deps = fileToDeps.get(absFilename);
+  if (deps) {
+    for (const dep of deps) {
+      if (!absDependencies.has(dep)) {
+        removeFileDependency(absFilename, dep);
+      }
+    }
+  }
+  for (const dep of absDependencies) {
+    let deps = depToFiles.get(dep);
+    if (!deps) {
+      depToFiles.set(dep, deps = new Set());
+      if (!hasStarted) {
+        watchQueue.add(dep);
+      } else {
+        watcher.add(dep);
+      }
+    }
+    deps.add(absFilename);
+  }
+  fileToDeps.set(absFilename, absDependencies);
+}
+function removeFileDependency(filename, dep) {
+  const deps = depToFiles.get(dep);
+  deps.delete(filename);
+  if (deps.size === 0) {
+    depToFiles.delete(dep);
+    if (!hasStarted) {
+      watchQueue.delete(dep);
+    } else {
+      watcher.unwatch(dep);
+    }
+  }
+}
+function unwatchFile(filename) {
+  const deps = fileToDeps.get(filename);
+  if (!deps) return;
+  for (const dep of deps) {
+    removeFileDependency(filename, dep);
+  }
+  fileToDeps.delete(filename);
+}
+function requireChokidar() {
+  try {
+    return parseInt(process.versions.node) >= 8 ? require("chokidar") : require("@nicolo-ribaudo/chokidar-2");
+  } catch (err) {
+    console.error("The optional dependency chokidar failed to install and is required for " + "--watch. Chokidar is likely not supported on your platform.");
+    throw err;
+  }
+}
+
+//# sourceMappingURL=watcher.js.map