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node_modules/jest-haste-map/build/lib/WatchmanWatcher.js

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+'use strict';
+
+Object.defineProperty(exports, '__esModule', {
+  value: true
+});
+exports.default = WatchmanWatcher;
+
+function _fs() {
+  const data = _interopRequireDefault(require('fs'));
+
+  _fs = function _fs() {
+    return data;
+  };
+
+  return data;
+}
+
+function _path() {
+  const data = _interopRequireDefault(require('path'));
+
+  _path = function _path() {
+    return data;
+  };
+
+  return data;
+}
+
+function _assert() {
+  const data = _interopRequireDefault(require('assert'));
+
+  _assert = function _assert() {
+    return data;
+  };
+
+  return data;
+}
+
+function _events() {
+  const data = require('events');
+
+  _events = function _events() {
+    return data;
+  };
+
+  return data;
+}
+
+function _fbWatchman() {
+  const data = _interopRequireDefault(require('fb-watchman'));
+
+  _fbWatchman = function _fbWatchman() {
+    return data;
+  };
+
+  return data;
+}
+
+function _common() {
+  const data = _interopRequireDefault(require('sane/src/common'));
+
+  _common = function _common() {
+    return data;
+  };
+
+  return data;
+}
+
+function _recrawlWarningDedupe() {
+  const data = _interopRequireDefault(
+    require('sane/src/utils/recrawl-warning-dedupe')
+  );
+
+  _recrawlWarningDedupe = function _recrawlWarningDedupe() {
+    return data;
+  };
+
+  return data;
+}
+
+function _interopRequireDefault(obj) {
+  return obj && obj.__esModule ? obj : {default: obj};
+}
+
+/**
+ * Copyright (c) Facebook, Inc. and its affiliates. All Rights Reserved.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+const CHANGE_EVENT = _common().default.CHANGE_EVENT;
+
+const DELETE_EVENT = _common().default.DELETE_EVENT;
+
+const ADD_EVENT = _common().default.ADD_EVENT;
+
+const ALL_EVENT = _common().default.ALL_EVENT;
+
+const SUB_NAME = 'sane-sub';
+/**
+ * Watches `dir`.
+ *
+ * @class PollWatcher
+ * @param String dir
+ * @param {Object} opts
+ * @public
+ */
+
+function WatchmanWatcher(dir, opts) {
+  _common().default.assignOptions(this, opts);
+
+  this.root = _path().default.resolve(dir);
+  this.init();
+} // eslint-disable-next-line no-proto
+
+WatchmanWatcher.prototype.__proto__ = _events().EventEmitter.prototype;
+/**
+ * Run the watchman `watch` command on the root and subscribe to changes.
+ *
+ * @private
+ */
+
+WatchmanWatcher.prototype.init = function() {
+  if (this.client) {
+    this.client.removeAllListeners();
+  }
+
+  const self = this;
+  this.client = new (_fbWatchman()).default.Client();
+  this.client.on('error', error => {
+    self.emit('error', error);
+  });
+  this.client.on('subscription', this.handleChangeEvent.bind(this));
+  this.client.on('end', () => {
+    console.warn('[sane] Warning: Lost connection to watchman, reconnecting..');
+    self.init();
+  });
+  this.watchProjectInfo = null;
+
+  function getWatchRoot() {
+    return self.watchProjectInfo ? self.watchProjectInfo.root : self.root;
+  }
+
+  function onCapability(error, resp) {
+    if (handleError(self, error)) {
+      // The Watchman watcher is unusable on this system, we cannot continue
+      return;
+    }
+
+    handleWarning(resp);
+    self.capabilities = resp.capabilities;
+
+    if (self.capabilities.relative_root) {
+      self.client.command(['watch-project', getWatchRoot()], onWatchProject);
+    } else {
+      self.client.command(['watch', getWatchRoot()], onWatch);
+    }
+  }
+
+  function onWatchProject(error, resp) {
+    if (handleError(self, error)) {
+      return;
+    }
+
+    handleWarning(resp);
+    self.watchProjectInfo = {
+      relativePath: resp.relative_path ? resp.relative_path : '',
+      root: resp.watch
+    };
+    self.client.command(['clock', getWatchRoot()], onClock);
+  }
+
+  function onWatch(error, resp) {
+    if (handleError(self, error)) {
+      return;
+    }
+
+    handleWarning(resp);
+    self.client.command(['clock', getWatchRoot()], onClock);
+  }
+
+  function onClock(error, resp) {
+    if (handleError(self, error)) {
+      return;
+    }
+
+    handleWarning(resp);
+    const options = {
+      fields: ['name', 'exists', 'new'],
+      since: resp.clock
+    }; // If the server has the wildmatch capability available it supports
+    // the recursive **/*.foo style match and we can offload our globs
+    // to the watchman server.  This saves both on data size to be
+    // communicated back to us and compute for evaluating the globs
+    // in our node process.
+
+    if (self.capabilities.wildmatch) {
+      if (self.globs.length === 0) {
+        if (!self.dot) {
+          // Make sure we honor the dot option if even we're not using globs.
+          options.expression = [
+            'match',
+            '**',
+            'wholename',
+            {
+              includedotfiles: false
+            }
+          ];
+        }
+      } else {
+        options.expression = ['anyof'];
+
+        for (const i in self.globs) {
+          options.expression.push([
+            'match',
+            self.globs[i],
+            'wholename',
+            {
+              includedotfiles: self.dot
+            }
+          ]);
+        }
+      }
+    }
+
+    if (self.capabilities.relative_root) {
+      options.relative_root = self.watchProjectInfo.relativePath;
+    }
+
+    self.client.command(
+      ['subscribe', getWatchRoot(), SUB_NAME, options],
+      onSubscribe
+    );
+  }
+
+  function onSubscribe(error, resp) {
+    if (handleError(self, error)) {
+      return;
+    }
+
+    handleWarning(resp);
+    self.emit('ready');
+  }
+
+  self.client.capabilityCheck(
+    {
+      optional: ['wildmatch', 'relative_root']
+    },
+    onCapability
+  );
+};
+/**
+ * Handles a change event coming from the subscription.
+ *
+ * @param {Object} resp
+ * @private
+ */
+
+WatchmanWatcher.prototype.handleChangeEvent = function(resp) {
+  _assert().default.equal(
+    resp.subscription,
+    SUB_NAME,
+    'Invalid subscription event.'
+  );
+
+  if (resp.is_fresh_instance) {
+    this.emit('fresh_instance');
+  }
+
+  if (resp.is_fresh_instance) {
+    this.emit('fresh_instance');
+  }
+
+  if (Array.isArray(resp.files)) {
+    resp.files.forEach(this.handleFileChange, this);
+  }
+};
+/**
+ * Handles a single change event record.
+ *
+ * @param {Object} changeDescriptor
+ * @private
+ */
+
+WatchmanWatcher.prototype.handleFileChange = function(changeDescriptor) {
+  const self = this;
+  let absPath;
+  let relativePath;
+
+  if (this.capabilities.relative_root) {
+    relativePath = changeDescriptor.name;
+    absPath = _path().default.join(
+      this.watchProjectInfo.root,
+      this.watchProjectInfo.relativePath,
+      relativePath
+    );
+  } else {
+    absPath = _path().default.join(this.root, changeDescriptor.name);
+    relativePath = changeDescriptor.name;
+  }
+
+  if (
+    !(self.capabilities.wildmatch && !this.hasIgnore) &&
+    !_common().default.isFileIncluded(
+      this.globs,
+      this.dot,
+      this.doIgnore,
+      relativePath
+    )
+  ) {
+    return;
+  }
+
+  if (!changeDescriptor.exists) {
+    self.emitEvent(DELETE_EVENT, relativePath, self.root);
+  } else {
+    _fs().default.lstat(absPath, (error, stat) => {
+      // Files can be deleted between the event and the lstat call
+      // the most reliable thing to do here is to ignore the event.
+      if (error && error.code === 'ENOENT') {
+        return;
+      }
+
+      if (handleError(self, error)) {
+        return;
+      }
+
+      const eventType = changeDescriptor.new ? ADD_EVENT : CHANGE_EVENT; // Change event on dirs are mostly useless.
+
+      if (!(eventType === CHANGE_EVENT && stat.isDirectory())) {
+        self.emitEvent(eventType, relativePath, self.root, stat);
+      }
+    });
+  }
+};
+/**
+ * Dispatches the event.
+ *
+ * @param {string} eventType
+ * @param {string} filepath
+ * @param {string} root
+ * @param {fs.Stat} stat
+ * @private
+ */
+
+WatchmanWatcher.prototype.emitEvent = function(
+  eventType,
+  filepath,
+  root,
+  stat
+) {
+  this.emit(eventType, filepath, root, stat);
+  this.emit(ALL_EVENT, eventType, filepath, root, stat);
+};
+/**
+ * Closes the watcher.
+ *
+ * @param {function} callback
+ * @private
+ */
+
+WatchmanWatcher.prototype.close = function(callback) {
+  this.client.removeAllListeners();
+  this.client.end();
+  callback && callback(null, true);
+};
+/**
+ * Handles an error and returns true if exists.
+ *
+ * @param {WatchmanWatcher} self
+ * @param {Error} error
+ * @private
+ */
+
+function handleError(self, error) {
+  if (error != null) {
+    self.emit('error', error);
+    return true;
+  } else {
+    return false;
+  }
+}
+/**
+ * Handles a warning in the watchman resp object.
+ *
+ * @param {object} resp
+ * @private
+ */
+
+function handleWarning(resp) {
+  if ('warning' in resp) {
+    if (_recrawlWarningDedupe().default.isRecrawlWarningDupe(resp.warning)) {
+      return true;
+    }
+
+    console.warn(resp.warning);
+    return true;
+  } else {
+    return false;
+  }
+}