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node_modules/node-sass/lib/watcher.js

@@ -0,0 +1,93 @@
+var grapher = require('sass-graph'),
+  clonedeep = require('lodash/cloneDeep'),
+  path = require('path'),
+  config = {},
+  watcher = {},
+  graph = null;
+
+watcher.reset = function(opts) {
+  config = clonedeep(opts || config || {});
+  var options = {
+    loadPaths: config.includePath,
+    extensions: ['scss', 'sass', 'css'],
+    follow: config.follow,
+  };
+
+  if (config.directory) {
+    graph = grapher.parseDir(config.directory, options);
+  } else {
+    graph = grapher.parseFile(config.src, options);
+  }
+
+  return Object.keys(graph.index);
+};
+
+watcher.changed = function(absolutePath) {
+  var files = {
+    added: [],
+    changed: [],
+    removed: [],
+  };
+
+  this.reset();
+
+  if (absolutePath && path.basename(absolutePath)[0] !== '_') {
+    files.changed.push(absolutePath);
+  }
+
+  graph.visitAncestors(absolutePath, function(parent) {
+    if (path.basename(parent)[0] !== '_') {
+      files.changed.push(parent);
+    }
+  });
+
+  graph.visitDescendents(absolutePath, function(child) {
+    files.added.push(child);
+  });
+
+  return files;
+};
+
+watcher.added = function(absolutePath) {
+  var files = {
+    added: [],
+    changed: [],
+    removed: [],
+  };
+
+  this.reset();
+
+  if (Object.keys(graph.index).indexOf(absolutePath) === -1) {
+    files.added.push(absolutePath);
+  }
+
+  graph.visitDescendents(absolutePath, function(child) {
+    files.added.push(child);
+  });
+
+  return files;
+};
+
+watcher.removed = function(absolutePath) {
+  var files = {
+    added: [],
+    changed: [],
+    removed: [],
+  };
+
+  graph.visitAncestors(absolutePath, function(parent) {
+    if (path.basename(parent)[0] !== '_') {
+      files.changed.push(parent);
+    }
+  });
+
+  if (Object.keys(graph.index).indexOf(absolutePath) !== -1) {
+    files.removed.push(absolutePath);
+  }
+
+  this.reset();
+
+  return files;
+};
+
+module.exports = watcher;