add index.js

index.js

@@ -0,0 +1,87 @@
+var path        = require('path');
+var Transform   = require('stream').Transform;
+var Vinyl       = require('vinyl');
+var vm          = require('vm');
+
+module.exports = function(filename) {
+  var files  = {};
+  var deps   = {};
+  var error;
+
+  var nameRe = /[\w.]+/g;
+  var extRe  = /\bextend:[ '"]+([\w.]+)/;
+  var mixsRe = /\bmixins: *[[{]/;
+  var mix1Re = /(?:['"]([\w.]+)['"]|[}\]])/g;
+  var locRe  = /(.*[\s]){2}/;
+
+  return new Transform({
+    objectMode: true,
+    transform,
+    flush,
+  });
+
+  function transform(file, enc, cb) {
+    var data = file.contents.toString();
+    var k, ext, mixs, mix1;
+
+    nameRe.lastIndex = 0;
+
+    if (
+      data &&
+      String(nameRe.exec(data)) === 'Ext.define' &&
+      (k = String(nameRe.exec(data)))
+    ) {
+      try {
+        new vm.Script(data, path.relative(file.cwd, file.path));
+      }
+      catch (e) {
+        (error = e).message += '\n' + e.stack.match(locRe)[0];
+      }
+
+      files[k] = file;
+      deps[k]  = [];
+
+      if ((ext = extRe.exec(data)) && ext[1]) {
+        deps[k].push(ext[1]);
+      }
+
+      if ((mixs = mixsRe.exec(data))) {
+        mix1Re.lastIndex = mixs.index + mixs[0].length;
+
+        while ((mix1 = mix1Re.exec(data)) && mix1[1]) {
+          deps[k].push(mix1[1]);
+        }
+      }
+    }
+
+    cb();
+  }
+
+  function flush(cb) {
+    var a = [];
+
+    for (var k in files) {
+      push(a, k);
+    }
+
+    if (a.length > 0) {
+      this.push(new Vinyl({
+        path: filename,
+        contents: Buffer.concat(a),
+      }));
+    }
+
+    cb(error);
+  }
+
+  function push(a, k) {
+    if (files[k]) {
+      deps[k].forEach(k => {
+        push(a, k);
+      });
+
+      a.push(files[k].contents);
+      delete files[k];
+    }
+  }
+};