add index.js

index.js

@@ -0,0 +1,76 @@
+var crypto      = require('crypto');
+var fs          = require('fs');
+var path        = require('path');
+var Transform   = require('stream').Transform;
+var Vinyl       = require('vinyl');
+
+module.exports = function(bundles, rename) {
+  var result = {};
+
+  return new Transform({
+    objectMode: true,
+    highWaterMark: 16,
+
+    transform(file, enc, cb) {
+      var f = path.parse(file.path);
+
+      if (f.ext === '.txt') {
+        result[f.name] = file.contents.toString();
+      }
+      else if ((a = f.base.split('-')).length > 1) {
+        if (result[a = a[0] + f.ext]) {
+          fs.unlinkSync(file.path);
+        }
+        else {
+          result[a] = f.base;
+        }
+      }
+      else {
+        var a = f.name + '-' +
+          crypto
+            .createHash('md5')
+            .update(file.contents)
+            .digest('hex')
+            .slice(0, 12) + f.ext;
+
+        if (rename) {
+          if (result[f.base] === a) {
+            fs.unlinkSync(file.path);
+          }
+          else {
+            if (result[f.base]) {
+              fs.unlinkSync(path.join(f.dir, result[f.base]));
+            }
+
+            fs.renameSync(file.path, path.join(f.dir, a));
+          }
+        }
+
+        result[f.base] = a;
+      }
+
+      cb();
+    },
+
+    flush(cb) {
+      if (Object.keys(result).length > 0) {
+        bundles.forEach(k => {
+          var o = Object.assign({ starter: k + '.js' }, result);
+
+          bundles.forEach(n => {
+            if (k !== n) {
+              delete o[n + '.js'];
+            }
+          });
+
+          this.push(new Vinyl({
+            path: k + '.json',
+            contents: Buffer.from(JSON.stringify(o)),
+          }));
+        });
+      }
+
+      cb();
+    },
+  });
+};