first commit

build/node_modules/vinyl-fs/lib/dest/index.js

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+'use strict';
+
+var through2 = require('through2');
+var sourcemaps = require('gulp-sourcemaps');
+var duplexify = require('duplexify');
+var sink = require('../sink');
+var prepareWrite = require('../prepareWrite');
+var writeContents = require('./writeContents');
+
+function dest(outFolder, opt) {
+  if (!opt) {
+    opt = {};
+  }
+
+  function saveFile(file, enc, cb) {
+    prepareWrite(outFolder, file, opt, function(err, writePath) {
+      if (err) {
+        return cb(err);
+      }
+      writeContents(writePath, file, cb);
+    });
+  }
+
+  var saveStream = through2.obj(opt, saveFile);
+  if (!opt.sourcemaps) {
+    // Sink the save stream to start flowing
+    // Do this on nextTick, it will flow at slowest speed of piped streams
+    process.nextTick(sink(saveStream));
+
+    return saveStream;
+  }
+
+  var sourcemapOpt = opt.sourcemaps;
+  if (typeof sourcemapOpt === 'boolean') {
+    sourcemapOpt = {};
+  }
+  if (typeof sourcemapOpt === 'string') {
+    sourcemapOpt = {
+      path: sourcemapOpt,
+    };
+  }
+
+  var mapStream = sourcemaps.write(sourcemapOpt.path, sourcemapOpt);
+  var outputStream = duplexify.obj(mapStream, saveStream);
+  mapStream.pipe(saveStream);
+
+  // Sink the output stream to start flowing
+  // Do this on nextTick, it will flow at slowest speed of piped streams
+  process.nextTick(sink(outputStream));
+
+  return outputStream;
+}
+
+module.exports = dest;