diff --git a/packages/babel-compiler/.npm/package/npm-shrinkwrap.json b/packages/babel-compiler/.npm/package/npm-shrinkwrap.json
index 29d0a3b6c59..f98dd6579a7 100644
--- a/packages/babel-compiler/.npm/package/npm-shrinkwrap.json
+++ b/packages/babel-compiler/.npm/package/npm-shrinkwrap.json
@@ -1,10 +1,10 @@
 {
   "dependencies": {
     "meteor-babel": {
-      "version": "0.4.3",
+      "version": "0.4.4",
       "dependencies": {
         "babel-core": {
-          "version": "5.7.1",
+          "version": "5.7.3",
           "dependencies": {
             "babel-plugin-constant-folding": {
               "version": "1.0.1"
@@ -57,7 +57,7 @@
               "version": "1.1.6"
             },
             "babylon": {
-              "version": "5.7.1"
+              "version": "5.7.2"
             },
             "bluebird": {
               "version": "2.9.34"
@@ -426,7 +426,7 @@
               "version": "1.0.1"
             },
             "trim-right": {
-              "version": "1.0.0"
+              "version": "1.0.1"
             }
           }
         },
diff --git a/packages/ecmascript/.npm/package/.gitignore b/packages/ecmascript/.npm/package/.gitignore
new file mode 100644
index 00000000000..3c3629e647f
--- /dev/null
+++ b/packages/ecmascript/.npm/package/.gitignore
@@ -0,0 +1 @@
+node_modules
diff --git a/packages/ecmascript/.npm/package/README b/packages/ecmascript/.npm/package/README
new file mode 100644
index 00000000000..3d492553a43
--- /dev/null
+++ b/packages/ecmascript/.npm/package/README
@@ -0,0 +1,7 @@
+This directory and the files immediately inside it are automatically generated
+when you change this package's NPM dependencies. Commit the files in this
+directory (npm-shrinkwrap.json, .gitignore, and this README) to source control
+so that others run the same versions of sub-dependencies.
+
+You should NOT check in the node_modules directory that Meteor automatically
+creates; if you are using git, the .gitignore file tells git to ignore it.
diff --git a/packages/ecmascript/.npm/package/npm-shrinkwrap.json b/packages/ecmascript/.npm/package/npm-shrinkwrap.json
new file mode 100644
index 00000000000..5e6e0c34685
--- /dev/null
+++ b/packages/ecmascript/.npm/package/npm-shrinkwrap.json
@@ -0,0 +1,20 @@
+{
+  "dependencies": {
+    "meteor-promise": {
+      "version": "0.2.4",
+      "dependencies": {
+        "promise": {
+          "version": "7.0.3",
+          "dependencies": {
+            "asap": {
+              "version": "2.0.3"
+            }
+          }
+        },
+        "fibers": {
+          "version": "1.0.6"
+        }
+      }
+    }
+  }
+}
diff --git a/packages/es5-shim/.npm/package/.gitignore b/packages/es5-shim/.npm/package/.gitignore
new file mode 100644
index 00000000000..3c3629e647f
--- /dev/null
+++ b/packages/es5-shim/.npm/package/.gitignore
@@ -0,0 +1 @@
+node_modules
diff --git a/packages/es5-shim/.npm/package/README b/packages/es5-shim/.npm/package/README
new file mode 100644
index 00000000000..3d492553a43
--- /dev/null
+++ b/packages/es5-shim/.npm/package/README
@@ -0,0 +1,7 @@
+This directory and the files immediately inside it are automatically generated
+when you change this package's NPM dependencies. Commit the files in this
+directory (npm-shrinkwrap.json, .gitignore, and this README) to source control
+so that others run the same versions of sub-dependencies.
+
+You should NOT check in the node_modules directory that Meteor automatically
+creates; if you are using git, the .gitignore file tells git to ignore it.
diff --git a/packages/es5-shim/.npm/package/npm-shrinkwrap.json b/packages/es5-shim/.npm/package/npm-shrinkwrap.json
new file mode 100644
index 00000000000..b2f6cd83a9d
--- /dev/null
+++ b/packages/es5-shim/.npm/package/npm-shrinkwrap.json
@@ -0,0 +1,7 @@
+{
+  "dependencies": {
+    "es5-shim": {
+      "version": "4.1.7"
+    }
+  }
+}