diff --git a/hopp.lock b/hopp.lock
index 50cdf65..4fa18cb 100644
--- a/hopp.lock
+++ b/hopp.lock
@@ -1 +1 @@
-{"v":"1.2.6","p":{"hopp-plugin-eslint":{},"hopp-plugin-babel":{}},"pl":[1499318242000,{"hopp-plugin-babel":["config","default"],"hopp-plugin-eslint":["config","format","failOnError","default"]}],"lp":{"hopp-plugin-babel":"/Users/karimsa/projects/hoppjs/hopp/packages/hopp-plugin-babel","hopp-plugin-eslint":"/Users/karimsa/projects/hoppjs/hopp/packages/hopp-plugin-eslint"},"_":[0,null],"sc":{"lint-accord":{"./packages/hopp-plugin-accord/lib/index.js":1499464156000},"lint-babel":{"./packages/hopp-plugin-babel/lib/index.js":1499464156000},"lint-concat":{"./packages/hopp-plugin-concat/lib/index.js":1499464156000},"lint-notify":{"./packages/hopp-plugin-notify/lib/index.js":1499464156000},"lint-eslint":{"./packages/hopp-plugin-eslint/lib/index.js":1499464156000},"hopp-latest":{"./packages/hopp/src/cache.js":1499221452000,"./packages/hopp/src/compat/else.js":1499447625000,"./packages/hopp/src/fs/get-path.js":1499150171000,"./packages/hopp/src/fs/glob.js":1499318099000,"./packages/hopp/src/fs/index.js":1499221452000,"./packages/hopp/src/hopp.js":1499318099000,"./packages/hopp/src/hoppfile/find.js":1499221452000,"./packages/hopp/src/hoppfile/index.js":1499150171000,"./packages/hopp/src/hoppfile/load.js":1499221452000,"./packages/hopp/src/index.js":1499293987000,"./packages/hopp/src/streams/buffer.js":1499150171000,"./packages/hopp/src/streams/bundle.js":1499221452000,"./packages/hopp/src/streams/index.js":1499150171000,"./packages/hopp/src/streams/map.js":1499150171000,"./packages/hopp/src/streams/readstream.js":1499294007000,"./packages/hopp/src/tasks/goal.js":1499318099000,"./packages/hopp/src/tasks/loadPlugins.js":1499293987000,"./packages/hopp/src/tasks/mgr.js":1499463285000,"./packages/hopp/src/tasks/parallel.js":1499318099000,"./packages/hopp/src/tasks/steps.js":1499318099000,"./packages/hopp/src/tasks/tree.js":1499150171000,"./packages/hopp/src/tasks/watch.js":1499150171000,"./packages/hopp/src/utils/_.js":1499150171000,"./packages/hopp/src/utils/deep-equal.js":1499150171000,"./packages/hopp/src/utils/error.js":1499318099000,"./packages/hopp/src/utils/fn.js":1499221452000,"./packages/hopp/src/utils/index.js":1499318099000,"./packages/hopp/src/utils/log.js":1499221452000},"build-accord":{"./packages/hopp-plugin-accord/lib/index.js":1499464156000},"build-concat":{"./packages/hopp-plugin-concat/lib/index.js":1499464156000},"build-eslint":{"./packages/hopp-plugin-eslint/lib/index.js":1499464156000},"build-babel":{"./packages/hopp-plugin-babel/lib/index.js":1499464156000},"build-notify":{"./packages/hopp-plugin-notify/lib/index.js":1499464156000},"hopp-legacy":{"./packages/hopp/src/cache.js":1499221452000,"./packages/hopp/src/compat/else.js":1499447625000,"./packages/hopp/src/fs/get-path.js":1499150171000,"./packages/hopp/src/fs/glob.js":1499318099000,"./packages/hopp/src/fs/index.js":1499221452000,"./packages/hopp/src/hopp.js":1499318099000,"./packages/hopp/src/hoppfile/find.js":1499221452000,"./packages/hopp/src/hoppfile/index.js":1499150171000,"./packages/hopp/src/hoppfile/load.js":1499221452000,"./packages/hopp/src/index.js":1499293987000,"./packages/hopp/src/streams/buffer.js":1499150171000,"./packages/hopp/src/streams/bundle.js":1499221452000,"./packages/hopp/src/streams/index.js":1499150171000,"./packages/hopp/src/streams/map.js":1499150171000,"./packages/hopp/src/streams/readstream.js":1499294007000,"./packages/hopp/src/tasks/goal.js":1499318099000,"./packages/hopp/src/tasks/loadPlugins.js":1499293987000,"./packages/hopp/src/tasks/mgr.js":1499463285000,"./packages/hopp/src/tasks/parallel.js":1499318099000,"./packages/hopp/src/tasks/steps.js":1499318099000,"./packages/hopp/src/tasks/tree.js":1499150171000,"./packages/hopp/src/tasks/watch.js":1499150171000,"./packages/hopp/src/utils/_.js":1499150171000,"./packages/hopp/src/utils/deep-equal.js":1499150171000,"./packages/hopp/src/utils/error.js":1499318099000,"./packages/hopp/src/utils/fn.js":1499221452000,"./packages/hopp/src/utils/index.js":1499318099000,"./packages/hopp/src/utils/log.js":1499221452000}}}
\ No newline at end of file
+{"v":"1.2.6","p":{"hopp-plugin-eslint":{},"hopp-plugin-babel":{}},"pl":[1499539762000,{"hopp-plugin-babel":["config","default"],"hopp-plugin-eslint":["config","format","failOnError","default"]}],"lp":{"hopp-plugin-babel":"/Users/rockliang/Desktop/Project/hopp_open_source/hopp/packages/hopp-plugin-babel","hopp-plugin-eslint":"/Users/rockliang/Desktop/Project/hopp_open_source/hopp/packages/hopp-plugin-eslint"},"_":[0,null],"sc":{"lint-accord":{"./packages/hopp-plugin-accord/lib/index.js":1499625583000},"lint-babel":{"./packages/hopp-plugin-babel/lib/index.js":1499625583000},"lint-concat":{"./packages/hopp-plugin-concat/lib/index.js":1499651076000},"lint-notify":{"./packages/hopp-plugin-notify/lib/index.js":1499625583000},"lint-eslint":{"./packages/hopp-plugin-eslint/lib/index.js":1499625583000},"hopp-latest":{"./packages/hopp/src/cache.js":1499539762000,"./packages/hopp/src/compat/else.js":1499539762000,"./packages/hopp/src/fs/get-path.js":1499539762000,"./packages/hopp/src/fs/glob.js":1499539762000,"./packages/hopp/src/fs/index.js":1499539762000,"./packages/hopp/src/hopp.js":1499539762000,"./packages/hopp/src/hoppfile/find.js":1499539762000,"./packages/hopp/src/hoppfile/index.js":1499539762000,"./packages/hopp/src/hoppfile/load.js":1499539762000,"./packages/hopp/src/index.js":1499539762000,"./packages/hopp/src/streams/buffer.js":1499539762000,"./packages/hopp/src/streams/bundle.js":1499539762000,"./packages/hopp/src/streams/index.js":1499539762000,"./packages/hopp/src/streams/map.js":1499539762000,"./packages/hopp/src/streams/readstream.js":1499539762000,"./packages/hopp/src/tasks/goal.js":1499539762000,"./packages/hopp/src/tasks/loadPlugins.js":1499539762000,"./packages/hopp/src/tasks/mgr.js":1499539762000,"./packages/hopp/src/tasks/parallel.js":1499539762000,"./packages/hopp/src/tasks/steps.js":1499539762000,"./packages/hopp/src/tasks/tree.js":1499539762000,"./packages/hopp/src/tasks/watch.js":1499539762000,"./packages/hopp/src/utils/_.js":1499539762000,"./packages/hopp/src/utils/deep-equal.js":1499539762000,"./packages/hopp/src/utils/error.js":1499539762000,"./packages/hopp/src/utils/fn.js":1499539762000,"./packages/hopp/src/utils/index.js":1499539762000,"./packages/hopp/src/utils/log.js":1499539762000},"build-accord":{"./packages/hopp-plugin-accord/lib/index.js":1499625583000},"build-concat":{"./packages/hopp-plugin-concat/lib/index.js":1499651076000},"build-eslint":{"./packages/hopp-plugin-eslint/lib/index.js":1499625583000},"build-babel":{"./packages/hopp-plugin-babel/lib/index.js":1499625583000},"build-notify":{"./packages/hopp-plugin-notify/lib/index.js":1499625583000},"hopp-legacy":{"./packages/hopp/src/cache.js":1499539762000,"./packages/hopp/src/compat/else.js":1499539762000,"./packages/hopp/src/fs/get-path.js":1499539762000,"./packages/hopp/src/fs/glob.js":1499539762000,"./packages/hopp/src/fs/index.js":1499539762000,"./packages/hopp/src/hopp.js":1499539762000,"./packages/hopp/src/hoppfile/find.js":1499539762000,"./packages/hopp/src/hoppfile/index.js":1499539762000,"./packages/hopp/src/hoppfile/load.js":1499539762000,"./packages/hopp/src/index.js":1499539762000,"./packages/hopp/src/streams/buffer.js":1499539762000,"./packages/hopp/src/streams/bundle.js":1499539762000,"./packages/hopp/src/streams/index.js":1499539762000,"./packages/hopp/src/streams/map.js":1499539762000,"./packages/hopp/src/streams/readstream.js":1499539762000,"./packages/hopp/src/tasks/goal.js":1499539762000,"./packages/hopp/src/tasks/loadPlugins.js":1499539762000,"./packages/hopp/src/tasks/mgr.js":1499539762000,"./packages/hopp/src/tasks/parallel.js":1499539762000,"./packages/hopp/src/tasks/steps.js":1499539762000,"./packages/hopp/src/tasks/tree.js":1499539762000,"./packages/hopp/src/tasks/watch.js":1499539762000,"./packages/hopp/src/utils/_.js":1499539762000,"./packages/hopp/src/utils/deep-equal.js":1499539762000,"./packages/hopp/src/utils/error.js":1499539762000,"./packages/hopp/src/utils/fn.js":1499539762000,"./packages/hopp/src/utils/index.js":1499539762000,"./packages/hopp/src/utils/log.js":1499539762000}}}
\ No newline at end of file
diff --git a/packages/hopp-plugin-babel/.vscode/settings.json b/packages/hopp-plugin-babel/.vscode/settings.json
new file mode 100644
index 0000000..3b66410
--- /dev/null
+++ b/packages/hopp-plugin-babel/.vscode/settings.json
@@ -0,0 +1,3 @@
+{
+    "git.ignoreLimitWarning": true
+}
\ No newline at end of file
diff --git a/packages/hopp-plugin-concat/dist/index.js b/packages/hopp-plugin-concat/dist/index.js
index 48546ab..f245a7e 100644
--- a/packages/hopp-plugin-concat/dist/index.js
+++ b/packages/hopp-plugin-concat/dist/index.js
@@ -10,7 +10,7 @@ function _asyncToGenerator(fn) { return function () { var gen = fn.apply(this, a
  * @file index.src.js
  * @license MIT
  */
-
+var tmp = false;
 /**
  * For node v4.
  */
@@ -25,17 +25,59 @@ var config = exports.config = {
 
   /**
    * We don't need to do any real transformation.
+   * suffix and prefix features
    */
 };
 exports.default = function () {
   var _ref = _asyncToGenerator(regeneratorRuntime.mark(function _callee(ctx, data) {
+    var opts;
     return regeneratorRuntime.wrap(function _callee$(_context) {
       while (1) {
         switch (_context.prev = _context.next) {
           case 0:
+            if (!(ctx.args.length > 1)) {
+              _context.next = 2;
+              break;
+            }
+
+            throw new Error('Unexpected numbers of arguments.');
+
+          case 2:
+
+            /**
+             * options assign
+             *  @param suffix adding string at the end of the each file
+             *  @param prefix adding string at the beginning of the first packet
+             */
+            opts = ctx.args[0] || {};
+            // // prefix
+            // if (opts.prefix && !tmp) {
+            //   data.size += opts.prefix.length
+            //   data.body = opts.prefix + data.body.toString();
+            // }
+            // // suffix 
+            // if (opts.suffix && !tmp) {
+            //   data.size += opts.prefix.length
+            //   data.body = data.body.toString() + opts.suffix
+            // }
+
+            if (config.bundle && !tmp) {
+              // prefix
+              if (opts.prefix) {
+                data.size += opts.prefix.length;
+                data.body = opts.prefix + data.body.toString();
+              }
+              // suffix
+              if (opts.suffix) {
+                data.size += opts.suffix.length;
+                data.body = data.body.toString() + opts.suffix;
+              }
+              tmp = true;
+            }
+
             return _context.abrupt('return', data);
 
-          case 1:
+          case 5:
           case 'end':
             return _context.stop();
         }
diff --git a/packages/hopp-plugin-concat/dist/index.js.map b/packages/hopp-plugin-concat/dist/index.js.map
index d570ff8..92b0585 100644
--- a/packages/hopp-plugin-concat/dist/index.js.map
+++ b/packages/hopp-plugin-concat/dist/index.js.map
@@ -1 +1 @@
-{"version":3,"sources":["../lib/index.js"],"names":["require","config","mode","bundle","ctx","data"],"mappings":";;;;;;;;AAAA;;;;;AAKA;;;AAGAA,QAAQ,6BAAR;;AAEA;;;AAGO,IAAMC,0BAAS;AACpBC,QAAM,QADc;AAEpBC,UAAQ;;AAGV;;;AALsB,CAAf;;uDAQQ,iBAAOC,GAAP,EAAYC,IAAZ;AAAA;AAAA;AAAA;AAAA;AAAA,6CACNA,IADM;;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA,G","file":"../lib/index.js","sourcesContent":["/**\n * @file index.src.js\n * @license MIT\n */\n\n/**\n * For node v4.\n */\nrequire('regenerator-runtime/runtime')\n\n/**\n * This enables the concatenation.\n */\nexport const config = {\n  mode: 'buffer',\n  bundle: true\n}\n\n/**\n * We don't need to do any real transformation.\n */\nexport default async (ctx, data) => {\n  return data\n}\n"]}
\ No newline at end of file
+{"version":3,"sources":["../lib/index.js"],"names":["tmp","require","config","mode","bundle","ctx","data","args","length","Error","opts","prefix","size","body","toString","suffix"],"mappings":";;;;;;;;AAAA;;;;AAIA,IAAIA,MAAM,KAAV;AACA;;;AAGAC,QAAQ,6BAAR;;AAEA;;;AAGO,IAAMC,0BAAS;AACpBC,QAAM,QADc;AAEpBC,UAAQ;;AAGV;;;;AALsB,CAAf;;uDASQ,iBAAOC,GAAP,EAAYC,IAAZ;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA,kBAITD,IAAIE,IAAJ,CAASC,MAAT,GAAkB,CAJT;AAAA;AAAA;AAAA;;AAAA,kBAKL,IAAIC,KAAJ,CAAU,kCAAV,CALK;;AAAA;;AAQb;;;;;AAKMC,gBAbO,GAaAL,IAAIE,IAAJ,CAAS,CAAT,KAAe,EAbf;AAcb;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;;AAEA,gBAAIL,OAAOE,MAAP,IAAiB,CAACJ,GAAtB,EAA2B;AACzB;AACA,kBAAIU,KAAKC,MAAT,EAAiB;AACfL,qBAAKM,IAAL,IAAaF,KAAKC,MAAL,CAAYH,MAAzB;AACAF,qBAAKO,IAAL,GAAYH,KAAKC,MAAL,GAAcL,KAAKO,IAAL,CAAUC,QAAV,EAA1B;AACD;AACD;AACA,kBAAIJ,KAAKK,MAAT,EAAiB;AACfT,qBAAKM,IAAL,IAAaF,KAAKK,MAAL,CAAYP,MAAzB;AACAF,qBAAKO,IAAL,GAAYP,KAAKO,IAAL,CAAUC,QAAV,KAAuBJ,KAAKK,MAAxC;AACD;AACDf,oBAAM,IAAN;AACD;;AArCY,6CAuCNM,IAvCM;;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA,G","file":"../lib/index.js","sourcesContent":["/**\n * @file index.src.js\n * @license MIT\n */\nlet tmp = false\n/**\n * For node v4.\n */\nrequire('regenerator-runtime/runtime')\n\n/**\n * This enables the concatenation.\n */\nexport const config = {\n  mode: 'buffer',\n  bundle: true\n}\n\n/**\n * We don't need to do any real transformation.\n * suffix and prefix features\n */\nexport default async (ctx, data) => {\n  /**\n   * unexpected num of arguments handling\n   */\n  if (ctx.args.length > 1) {\n    throw new Error('Unexpected numbers of arguments.')\n  }\n\n  /**\n   * options assign\n   *  @param suffix adding string at the end of the each file\n   *  @param prefix adding string at the beginning of the first packet\n   */\n  const opts = ctx.args[0] || {}\n  // // prefix\n  // if (opts.prefix && !tmp) {\n  //   data.size += opts.prefix.length\n  //   data.body = opts.prefix + data.body.toString();\n  // }\n  // // suffix \n  // if (opts.suffix && !tmp) {\n  //   data.size += opts.prefix.length\n  //   data.body = data.body.toString() + opts.suffix\n  // }\n\n  if (config.bundle && !tmp) {\n    // prefix\n    if (opts.prefix) {\n      data.size += opts.prefix.length\n      data.body = opts.prefix + data.body.toString()\n    }\n    // suffix\n    if (opts.suffix) {\n      data.size += opts.suffix.length\n      data.body = data.body.toString() + opts.suffix\n    }\n    tmp = true\n  }\n\n  return data\n}\n"]}
\ No newline at end of file
diff --git a/packages/hopp-plugin-concat/example/.gitignore b/packages/hopp-plugin-concat/example/.gitignore
index cb5256a..c25464b 100644
--- a/packages/hopp-plugin-concat/example/.gitignore
+++ b/packages/hopp-plugin-concat/example/.gitignore
@@ -1,2 +1,3 @@
+.vscode
 hopp.lock
 dist
\ No newline at end of file
diff --git a/packages/hopp-plugin-concat/example/hoppfile.js b/packages/hopp-plugin-concat/example/hoppfile.js
index dcffd39..1554c0f 100644
--- a/packages/hopp-plugin-concat/example/hoppfile.js
+++ b/packages/hopp-plugin-concat/example/hoppfile.js
@@ -4,5 +4,7 @@ hopp.load(`${__dirname}/../`)
 
 exports.default =
   hopp('src/*.js')
-    .concat()
-    .dest('dist')
+    .concat({
+      prefix:"@Rock"
+    })
+    .dest('dist.lock')
diff --git a/packages/hopp-plugin-concat/example/src/tmp.js b/packages/hopp-plugin-concat/example/src/tmp.js
new file mode 100644
index 0000000..029afd6
--- /dev/null
+++ b/packages/hopp-plugin-concat/example/src/tmp.js
@@ -0,0 +1 @@
+console.log("this is opts js")
\ No newline at end of file
diff --git a/packages/hopp-plugin-concat/lib/index.js b/packages/hopp-plugin-concat/lib/index.js
index f683676..3ca7b1f 100644
--- a/packages/hopp-plugin-concat/lib/index.js
+++ b/packages/hopp-plugin-concat/lib/index.js
@@ -2,7 +2,7 @@
  * @file index.src.js
  * @license MIT
  */
-
+let tmp = false
 /**
  * For node v4.
  */
@@ -18,7 +18,36 @@ export const config = {
 
 /**
  * We don't need to do any real transformation.
+ * suffix and prefix features added
  */
 export default async (ctx, data) => {
+  /**
+   * unexpected num of arguments handling
+   */
+  if (ctx.args.length > 1) {
+    throw new Error('Unexpected numbers of arguments.')
+  }
+
+  /**
+   * options assign
+   *  @param suffix adding string at the end of the each file
+   *  @param prefix adding string at the beginning of the first packet
+   */
+  const opts = ctx.args[0] || {}
+  
+  if (config.bundle && !tmp) {
+    // prefix
+    if (opts.prefix) {
+      data.size += opts.prefix.length
+      data.body = opts.prefix + data.body.toString()
+    }
+    // suffix
+    if (opts.suffix) {
+      data.size += opts.suffix.length
+      data.body = data.body.toString() + opts.suffix
+    }
+    tmp = true
+  }
+
   return data
 }