diff --git a/package.json b/package.json
index 80f142a794a0..b190e40fec2d 100644
--- a/package.json
+++ b/package.json
@@ -21,7 +21,6 @@
     "get-stdin": "^5.0.1",
     "minimist": "^1.2.0",
     "private": "^0.1.6",
-    "recast": "^0.11.18",
     "source-map": "^0.5.6"
   },
   "devDependencies": {
diff --git a/tests_config/run_spec.js b/tests_config/run_spec.js
index 8b0a638ebec4..cd0957f919a1 100644
--- a/tests_config/run_spec.js
+++ b/tests_config/run_spec.js
@@ -1,7 +1,6 @@
 "use strict";
 const fs = require('fs');
 const jscodefmt = require("../");
-const recast = require("recast");
 const types = require("ast-types");
 
 const RUN_AST_TESTS = process.env["AST_COMPARE"];
diff --git a/yarn.lock b/yarn.lock
index 991930b8027e..7d3af9db59d6 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -2,6 +2,10 @@
 # yarn lockfile v1
 
 
+"@comandeer/babel-plugin-banner@^1.0.0":
+  version "1.0.0"
+  resolved "https://registry.yarnpkg.com/@comandeer/babel-plugin-banner/-/babel-plugin-banner-1.0.0.tgz#40bcce0bbee084b5b02545a33635d053c248356f"
+
 abab@^1.0.0:
   version "1.0.3"
   resolved "https://registry.yarnpkg.com/abab/-/abab-1.0.3.tgz#b81de5f7274ec4e756d797cd834f303642724e5d"
@@ -16,6 +20,10 @@ acorn@^2.1.0, acorn@^2.4.0:
   version "2.7.0"
   resolved "https://registry.yarnpkg.com/acorn/-/acorn-2.7.0.tgz#ab6e7d9d886aaca8b085bc3312b79a198433f0e7"
 
+acorn@^4.0.1:
+  version "4.0.4"
+  resolved "https://registry.yarnpkg.com/acorn/-/acorn-4.0.4.tgz#17a8d6a7a6c4ef538b814ec9abac2779293bf30a"
+
 align-text@^0.1.1, align-text@^0.1.3:
   version "0.1.4"
   resolved "https://registry.yarnpkg.com/align-text/-/align-text-0.1.4.tgz#0cd90a561093f35d0a99256c22b7069433fad117"
@@ -76,6 +84,14 @@ arrify@^1.0.1:
   version "1.0.1"
   resolved "https://registry.yarnpkg.com/arrify/-/arrify-1.0.1.tgz#898508da2226f380df904728456849c1501a4b0d"
 
+asn1.js@^4.0.0:
+  version "4.9.1"
+  resolved "https://registry.yarnpkg.com/asn1.js/-/asn1.js-4.9.1.tgz#48ba240b45a9280e94748990ba597d216617fd40"
+  dependencies:
+    bn.js "^4.0.0"
+    inherits "^2.0.1"
+    minimalistic-assert "^1.0.0"
+
 asn1@~0.2.3:
   version "0.2.3"
   resolved "https://registry.yarnpkg.com/asn1/-/asn1-0.2.3.tgz#dac8787713c9966849fc8180777ebe9c1ddf3b86"
@@ -92,10 +108,6 @@ ast-types@0.8.18:
   version "0.8.18"
   resolved "https://registry.yarnpkg.com/ast-types/-/ast-types-0.8.18.tgz#c8b98574898e8914e9d8de74b947564a9fe929af"
 
-ast-types@0.9.2:
-  version "0.9.2"
-  resolved "https://registry.yarnpkg.com/ast-types/-/ast-types-0.9.2.tgz#2cc19979d15c655108bf565323b8e7ee38751f6b"
-
 "ast-types@git+https://github.com/jlongster/ast-types.git":
   version "0.9.3"
   resolved "git+https://github.com/jlongster/ast-types.git#4b373d7e710105b07b22a12389ef2d8e1bcf2412"
@@ -134,7 +146,7 @@ babel-code-frame@^6.20.0:
     esutils "^2.0.2"
     js-tokens "^2.0.0"
 
-babel-core@^6.0.0, babel-core@^6.18.0:
+babel-core@^6.0.0, babel-core@^6.18.0, babel-core@^6.21.0:
   version "6.21.0"
   resolved "https://registry.yarnpkg.com/babel-core/-/babel-core-6.21.0.tgz#75525480c21c803f826ef3867d22c19f080a3724"
   dependencies:
@@ -170,6 +182,30 @@ babel-generator@^6.18.0, babel-generator@^6.21.0:
     lodash "^4.2.0"
     source-map "^0.5.0"
 
+babel-helper-evaluate-path@^0.0.3:
+  version "0.0.3"
+  resolved "https://registry.yarnpkg.com/babel-helper-evaluate-path/-/babel-helper-evaluate-path-0.0.3.tgz#1d103ac9d4a59e5d431842212f151785f7ac547b"
+
+babel-helper-flip-expressions@^0.0.1:
+  version "0.0.1"
+  resolved "https://registry.yarnpkg.com/babel-helper-flip-expressions/-/babel-helper-flip-expressions-0.0.1.tgz#c2ba1599426e7928333fd5c08eee6cdf8328c848"
+
+babel-helper-is-nodes-equiv@^0.0.1:
+  version "0.0.1"
+  resolved "https://registry.yarnpkg.com/babel-helper-is-nodes-equiv/-/babel-helper-is-nodes-equiv-0.0.1.tgz#34e9b300b1479ddd98ec77ea0bbe9342dfe39684"
+
+babel-helper-is-void-0@^0.0.1:
+  version "0.0.1"
+  resolved "https://registry.yarnpkg.com/babel-helper-is-void-0/-/babel-helper-is-void-0-0.0.1.tgz#ed74553b883e68226ae45f989a99b02c190f105a"
+
+babel-helper-remove-or-void@^0.0.1:
+  version "0.0.1"
+  resolved "https://registry.yarnpkg.com/babel-helper-remove-or-void/-/babel-helper-remove-or-void-0.0.1.tgz#f602790e465acf2dfbe84fb3dd210c43a2dd7262"
+
+babel-helper-to-multiple-sequence-expressions@^0.0.2:
+  version "0.0.2"
+  resolved "https://registry.yarnpkg.com/babel-helper-to-multiple-sequence-expressions/-/babel-helper-to-multiple-sequence-expressions-0.0.2.tgz#07d5d2e674aa62962ac9e0000b539920c301c4b9"
+
 babel-helpers@^6.16.0:
   version "6.16.0"
   resolved "https://registry.yarnpkg.com/babel-helpers/-/babel-helpers-6.16.0.tgz#1095ec10d99279460553e67eb3eee9973d3867e3"
@@ -204,6 +240,128 @@ babel-plugin-jest-hoist@^18.0.0:
   version "18.0.0"
   resolved "https://registry.yarnpkg.com/babel-plugin-jest-hoist/-/babel-plugin-jest-hoist-18.0.0.tgz#4150e70ecab560e6e7344adc849498072d34e12a"
 
+babel-plugin-minify-constant-folding@^0.0.3:
+  version "0.0.3"
+  resolved "https://registry.yarnpkg.com/babel-plugin-minify-constant-folding/-/babel-plugin-minify-constant-folding-0.0.3.tgz#a511e839562489811987a7a503c43c312c40138a"
+  dependencies:
+    babel-helper-evaluate-path "^0.0.3"
+
+babel-plugin-minify-dead-code-elimination@^0.1.1:
+  version "0.1.1"
+  resolved "https://registry.yarnpkg.com/babel-plugin-minify-dead-code-elimination/-/babel-plugin-minify-dead-code-elimination-0.1.1.tgz#1a0133fcd06c7fa477b01c193ba3213c8944ff01"
+  dependencies:
+    babel-helper-remove-or-void "^0.0.1"
+    lodash.some "^4.6.0"
+
+babel-plugin-minify-flip-comparisons@^0.0.1:
+  version "0.0.1"
+  resolved "https://registry.yarnpkg.com/babel-plugin-minify-flip-comparisons/-/babel-plugin-minify-flip-comparisons-0.0.1.tgz#679f4493a692afc705c4b79fde1dadb535c4eb08"
+  dependencies:
+    babel-helper-is-void-0 "^0.0.1"
+
+babel-plugin-minify-guarded-expressions@^0.0.3:
+  version "0.0.3"
+  resolved "https://registry.yarnpkg.com/babel-plugin-minify-guarded-expressions/-/babel-plugin-minify-guarded-expressions-0.0.3.tgz#6da1caa0b6abda964647377bd5e19afdbf91cae8"
+  dependencies:
+    babel-helper-flip-expressions "^0.0.1"
+
+babel-plugin-minify-infinity@^0.0.3:
+  version "0.0.3"
+  resolved "https://registry.yarnpkg.com/babel-plugin-minify-infinity/-/babel-plugin-minify-infinity-0.0.3.tgz#4cc99b61d12b434ce80ad675103335c589cba9a1"
+
+babel-plugin-minify-mangle-names@^0.0.5:
+  version "0.0.5"
+  resolved "https://registry.yarnpkg.com/babel-plugin-minify-mangle-names/-/babel-plugin-minify-mangle-names-0.0.5.tgz#53e4905de90a215622012cc003c3e0d5bdf18a8a"
+
+babel-plugin-minify-numeric-literals@^0.0.1:
+  version "0.0.1"
+  resolved "https://registry.yarnpkg.com/babel-plugin-minify-numeric-literals/-/babel-plugin-minify-numeric-literals-0.0.1.tgz#9597e6c31154d7daf3744d0bd417c144b275bd53"
+
+babel-plugin-minify-replace@^0.0.1:
+  version "0.0.1"
+  resolved "https://registry.yarnpkg.com/babel-plugin-minify-replace/-/babel-plugin-minify-replace-0.0.1.tgz#5d5aea7cb9899245248d1ee9ce7a2fe556a8facc"
+
+babel-plugin-minify-simplify@^0.0.5:
+  version "0.0.5"
+  resolved "https://registry.yarnpkg.com/babel-plugin-minify-simplify/-/babel-plugin-minify-simplify-0.0.5.tgz#71d1de1993a138282c679aad74060829b2b13ed2"
+  dependencies:
+    babel-helper-flip-expressions "^0.0.1"
+    babel-helper-is-nodes-equiv "^0.0.1"
+    babel-helper-to-multiple-sequence-expressions "^0.0.2"
+
+babel-plugin-minify-type-constructors@^0.0.2:
+  version "0.0.2"
+  resolved "https://registry.yarnpkg.com/babel-plugin-minify-type-constructors/-/babel-plugin-minify-type-constructors-0.0.2.tgz#4f9a28951e776f31ac11a29cd58cf9eef8b2e292"
+  dependencies:
+    babel-helper-is-void-0 "^0.0.1"
+
+babel-plugin-transform-member-expression-literals@^6.8.0:
+  version "6.8.0"
+  resolved "https://registry.yarnpkg.com/babel-plugin-transform-member-expression-literals/-/babel-plugin-transform-member-expression-literals-6.8.0.tgz#718755a70492a895d8f41810afa9998bc09f57b9"
+  dependencies:
+    babel-runtime "^6.0.0"
+
+babel-plugin-transform-merge-sibling-variables@^6.8.0:
+  version "6.8.0"
+  resolved "https://registry.yarnpkg.com/babel-plugin-transform-merge-sibling-variables/-/babel-plugin-transform-merge-sibling-variables-6.8.0.tgz#724074e4ef78b601fcf9a34165c972a1b6117e99"
+  dependencies:
+    babel-runtime "^6.0.0"
+
+babel-plugin-transform-minify-booleans@^6.8.0:
+  version "6.8.0"
+  resolved "https://registry.yarnpkg.com/babel-plugin-transform-minify-booleans/-/babel-plugin-transform-minify-booleans-6.8.0.tgz#b1a48864a727847696b84eae36fa4d085a54b42b"
+  dependencies:
+    babel-runtime "^6.0.0"
+
+babel-plugin-transform-property-literals@^6.8.0:
+  version "6.8.0"
+  resolved "https://registry.yarnpkg.com/babel-plugin-transform-property-literals/-/babel-plugin-transform-property-literals-6.8.0.tgz#a65b2e6e1274d25df0f3a4c5e85bc8f1cdd9e019"
+  dependencies:
+    babel-runtime "^6.0.0"
+
+babel-plugin-transform-regexp-constructors@^0.0.3:
+  version "0.0.3"
+  resolved "https://registry.yarnpkg.com/babel-plugin-transform-regexp-constructors/-/babel-plugin-transform-regexp-constructors-0.0.3.tgz#463200d8371a06f077226b967858369211b5cfe3"
+
+babel-plugin-transform-remove-undefined@^0.0.3:
+  version "0.0.3"
+  resolved "https://registry.yarnpkg.com/babel-plugin-transform-remove-undefined/-/babel-plugin-transform-remove-undefined-0.0.3.tgz#34baeb7bde4fc01d5235304ee891e7b6bff00432"
+
+babel-plugin-transform-simplify-comparison-operators@^6.8.0:
+  version "6.8.0"
+  resolved "https://registry.yarnpkg.com/babel-plugin-transform-simplify-comparison-operators/-/babel-plugin-transform-simplify-comparison-operators-6.8.0.tgz#0183d65bfdc54c80d922a3a9b3008e25fa9d32a7"
+  dependencies:
+    babel-runtime "^6.0.0"
+
+babel-plugin-transform-undefined-to-void@^6.8.0:
+  version "6.8.0"
+  resolved "https://registry.yarnpkg.com/babel-plugin-transform-undefined-to-void/-/babel-plugin-transform-undefined-to-void-6.8.0.tgz#bc5b6b4908d3b1262170e67cb3963903ddce167e"
+  dependencies:
+    babel-runtime "^6.0.0"
+
+babel-preset-babili@0.0.9:
+  version "0.0.9"
+  resolved "https://registry.yarnpkg.com/babel-preset-babili/-/babel-preset-babili-0.0.9.tgz#699f08703ff1c84f4f6c229ffe5662c8f1861bf2"
+  dependencies:
+    babel-plugin-minify-constant-folding "^0.0.3"
+    babel-plugin-minify-dead-code-elimination "^0.1.1"
+    babel-plugin-minify-flip-comparisons "^0.0.1"
+    babel-plugin-minify-guarded-expressions "^0.0.3"
+    babel-plugin-minify-infinity "^0.0.3"
+    babel-plugin-minify-mangle-names "^0.0.5"
+    babel-plugin-minify-numeric-literals "^0.0.1"
+    babel-plugin-minify-replace "^0.0.1"
+    babel-plugin-minify-simplify "^0.0.5"
+    babel-plugin-minify-type-constructors "^0.0.2"
+    babel-plugin-transform-member-expression-literals "^6.8.0"
+    babel-plugin-transform-merge-sibling-variables "^6.8.0"
+    babel-plugin-transform-minify-booleans "^6.8.0"
+    babel-plugin-transform-property-literals "^6.8.0"
+    babel-plugin-transform-regexp-constructors "^0.0.3"
+    babel-plugin-transform-remove-undefined "^0.0.3"
+    babel-plugin-transform-simplify-comparison-operators "^6.8.0"
+    babel-plugin-transform-undefined-to-void "^6.8.0"
+
 babel-preset-jest@^18.0.0:
   version "18.0.0"
   resolved "https://registry.yarnpkg.com/babel-preset-jest/-/babel-preset-jest-18.0.0.tgz#84faf8ca3ec65aba7d5e3f59bbaed935ab24049e"
@@ -276,6 +434,10 @@ bcrypt-pbkdf@^1.0.0:
   dependencies:
     tweetnacl "^0.14.3"
 
+bn.js@^4.0.0, bn.js@^4.1.0, bn.js@^4.1.1, bn.js@^4.4.0:
+  version "4.11.6"
+  resolved "https://registry.yarnpkg.com/bn.js/-/bn.js-4.11.6.tgz#53344adb14617a13f6e8dd2ce28905d1c0ba3215"
+
 boom@2.x.x:
   version "2.10.1"
   resolved "https://registry.yarnpkg.com/boom/-/boom-2.10.1.tgz#39c8918ceff5799f83f9492a848f625add0c766f"
@@ -297,19 +459,76 @@ braces@^1.8.2:
     preserve "^0.2.0"
     repeat-element "^1.1.2"
 
-browser-resolve@^1.11.2:
+brorand@^1.0.1:
+  version "1.0.6"
+  resolved "https://registry.yarnpkg.com/brorand/-/brorand-1.0.6.tgz#4028706b915f91f7b349a2e0bf3c376039d216e5"
+
+browser-resolve@^1.11.0, browser-resolve@^1.11.2:
   version "1.11.2"
   resolved "https://registry.yarnpkg.com/browser-resolve/-/browser-resolve-1.11.2.tgz#8ff09b0a2c421718a1051c260b32e48f442938ce"
   dependencies:
     resolve "1.1.7"
 
+browserify-aes@^1.0.0, browserify-aes@^1.0.4:
+  version "1.0.6"
+  resolved "https://registry.yarnpkg.com/browserify-aes/-/browserify-aes-1.0.6.tgz#5e7725dbdef1fd5930d4ebab48567ce451c48a0a"
+  dependencies:
+    buffer-xor "^1.0.2"
+    cipher-base "^1.0.0"
+    create-hash "^1.1.0"
+    evp_bytestokey "^1.0.0"
+    inherits "^2.0.1"
+
+browserify-cipher@^1.0.0:
+  version "1.0.0"
+  resolved "https://registry.yarnpkg.com/browserify-cipher/-/browserify-cipher-1.0.0.tgz#9988244874bf5ed4e28da95666dcd66ac8fc363a"
+  dependencies:
+    browserify-aes "^1.0.4"
+    browserify-des "^1.0.0"
+    evp_bytestokey "^1.0.0"
+
+browserify-des@^1.0.0:
+  version "1.0.0"
+  resolved "https://registry.yarnpkg.com/browserify-des/-/browserify-des-1.0.0.tgz#daa277717470922ed2fe18594118a175439721dd"
+  dependencies:
+    cipher-base "^1.0.1"
+    des.js "^1.0.0"
+    inherits "^2.0.1"
+
+browserify-rsa@^4.0.0:
+  version "4.0.1"
+  resolved "https://registry.yarnpkg.com/browserify-rsa/-/browserify-rsa-4.0.1.tgz#21e0abfaf6f2029cf2fafb133567a701d4135524"
+  dependencies:
+    bn.js "^4.1.0"
+    randombytes "^2.0.1"
+
+browserify-sign@^4.0.0:
+  version "4.0.0"
+  resolved "https://registry.yarnpkg.com/browserify-sign/-/browserify-sign-4.0.0.tgz#10773910c3c206d5420a46aad8694f820b85968f"
+  dependencies:
+    bn.js "^4.1.1"
+    browserify-rsa "^4.0.0"
+    create-hash "^1.1.0"
+    create-hmac "^1.1.2"
+    elliptic "^6.0.0"
+    inherits "^2.0.1"
+    parse-asn1 "^5.0.0"
+
 bser@^1.0.2:
   version "1.0.2"
   resolved "https://registry.yarnpkg.com/bser/-/bser-1.0.2.tgz#381116970b2a6deea5646dd15dd7278444b56169"
   dependencies:
     node-int64 "^0.4.0"
 
-builtin-modules@^1.0.0:
+buffer-es6@^4.9.2:
+  version "4.9.3"
+  resolved "https://registry.yarnpkg.com/buffer-es6/-/buffer-es6-4.9.3.tgz#f26347b82df76fd37e18bcb5288c4970cfd5c404"
+
+buffer-xor@^1.0.2:
+  version "1.0.3"
+  resolved "https://registry.yarnpkg.com/buffer-xor/-/buffer-xor-1.0.3.tgz#26e61ed1422fb70dd42e6e36729ed51d855fe8d9"
+
+builtin-modules@^1.0.0, builtin-modules@^1.1.0:
   version "1.1.1"
   resolved "https://registry.yarnpkg.com/builtin-modules/-/builtin-modules-1.1.1.tgz#270f076c5a72c02f5b65a47df94c5fe3a278892f"
 
@@ -357,6 +576,12 @@ ci-info@^1.0.0:
   version "1.0.0"
   resolved "https://registry.yarnpkg.com/ci-info/-/ci-info-1.0.0.tgz#dc5285f2b4e251821683681c381c3388f46ec534"
 
+cipher-base@^1.0.0, cipher-base@^1.0.1:
+  version "1.0.3"
+  resolved "https://registry.yarnpkg.com/cipher-base/-/cipher-base-1.0.3.tgz#eeabf194419ce900da3018c207d212f2a6df0a07"
+  dependencies:
+    inherits "^2.0.1"
+
 cli-table@^0.3.1:
   version "0.3.1"
   resolved "https://registry.yarnpkg.com/cli-table/-/cli-table-0.3.1.tgz#f53b05266a8b1a0b934b3d0821e6e2dc5914ae23"
@@ -426,12 +651,50 @@ core-js@^2.4.0:
   version "2.4.1"
   resolved "https://registry.yarnpkg.com/core-js/-/core-js-2.4.1.tgz#4de911e667b0eae9124e34254b53aea6fc618d3e"
 
+create-ecdh@^4.0.0:
+  version "4.0.0"
+  resolved "https://registry.yarnpkg.com/create-ecdh/-/create-ecdh-4.0.0.tgz#888c723596cdf7612f6498233eebd7a35301737d"
+  dependencies:
+    bn.js "^4.1.0"
+    elliptic "^6.0.0"
+
+create-hash@^1.1.0, create-hash@^1.1.1:
+  version "1.1.2"
+  resolved "https://registry.yarnpkg.com/create-hash/-/create-hash-1.1.2.tgz#51210062d7bb7479f6c65bb41a92208b1d61abad"
+  dependencies:
+    cipher-base "^1.0.1"
+    inherits "^2.0.1"
+    ripemd160 "^1.0.0"
+    sha.js "^2.3.6"
+
+create-hmac@^1.1.0, create-hmac@^1.1.2:
+  version "1.1.4"
+  resolved "https://registry.yarnpkg.com/create-hmac/-/create-hmac-1.1.4.tgz#d3fb4ba253eb8b3f56e39ea2fbcb8af747bd3170"
+  dependencies:
+    create-hash "^1.1.0"
+    inherits "^2.0.1"
+
 cryptiles@2.x.x:
   version "2.0.5"
   resolved "https://registry.yarnpkg.com/cryptiles/-/cryptiles-2.0.5.tgz#3bdfecdc608147c1c67202fa291e7dca59eaa3b8"
   dependencies:
     boom "2.x.x"
 
+crypto-browserify@^3.11.0:
+  version "3.11.0"
+  resolved "https://registry.yarnpkg.com/crypto-browserify/-/crypto-browserify-3.11.0.tgz#3652a0906ab9b2a7e0c3ce66a408e957a2485522"
+  dependencies:
+    browserify-cipher "^1.0.0"
+    browserify-sign "^4.0.0"
+    create-ecdh "^4.0.0"
+    create-hash "^1.1.0"
+    create-hmac "^1.1.0"
+    diffie-hellman "^5.0.0"
+    inherits "^2.0.1"
+    pbkdf2 "^3.0.3"
+    public-encrypt "^4.0.0"
+    randombytes "^2.0.0"
+
 cssom@0.3.x, "cssom@>= 0.3.0 < 0.4.0":
   version "0.3.1"
   resolved "https://registry.yarnpkg.com/cssom/-/cssom-0.3.1.tgz#c9e37ef2490e64f6d1baa10fda852257082c25d3"
@@ -466,6 +729,13 @@ delayed-stream@~1.0.0:
   version "1.0.0"
   resolved "https://registry.yarnpkg.com/delayed-stream/-/delayed-stream-1.0.0.tgz#df3ae199acadfb7d440aaae0b29e2272b24ec619"
 
+des.js@^1.0.0:
+  version "1.0.0"
+  resolved "https://registry.yarnpkg.com/des.js/-/des.js-1.0.0.tgz#c074d2e2aa6a8a9a07dbd61f9a15c2cd83ec8ecc"
+  dependencies:
+    inherits "^2.0.1"
+    minimalistic-assert "^1.0.0"
+
 detect-indent@^4.0.0:
   version "4.0.0"
   resolved "https://registry.yarnpkg.com/detect-indent/-/detect-indent-4.0.0.tgz#f76d064352cdf43a1cb6ce619c4ee3a9475de208"
@@ -476,12 +746,29 @@ diff@^3.0.0:
   version "3.2.0"
   resolved "https://registry.yarnpkg.com/diff/-/diff-3.2.0.tgz#c9ce393a4b7cbd0b058a725c93df299027868ff9"
 
+diffie-hellman@^5.0.0:
+  version "5.0.2"
+  resolved "https://registry.yarnpkg.com/diffie-hellman/-/diffie-hellman-5.0.2.tgz#b5835739270cfe26acf632099fded2a07f209e5e"
+  dependencies:
+    bn.js "^4.1.0"
+    miller-rabin "^4.0.0"
+    randombytes "^2.0.0"
+
 ecc-jsbn@~0.1.1:
   version "0.1.1"
   resolved "https://registry.yarnpkg.com/ecc-jsbn/-/ecc-jsbn-0.1.1.tgz#0fc73a9ed5f0d53c38193398523ef7e543777505"
   dependencies:
     jsbn "~0.1.0"
 
+elliptic@^6.0.0:
+  version "6.3.2"
+  resolved "https://registry.yarnpkg.com/elliptic/-/elliptic-6.3.2.tgz#e4c81e0829cf0a65ab70e998b8232723b5c1bc48"
+  dependencies:
+    bn.js "^4.4.0"
+    brorand "^1.0.1"
+    hash.js "^1.0.0"
+    inherits "^2.0.1"
+
 "errno@>=0.1.1 <0.2.0-0":
   version "0.1.4"
   resolved "https://registry.yarnpkg.com/errno/-/errno-0.1.4.tgz#b896e23a9e5e8ba33871fc996abd3635fc9a1c7d"
@@ -517,18 +804,28 @@ esprima@~3.0.0:
   version "3.0.0"
   resolved "https://registry.yarnpkg.com/esprima/-/esprima-3.0.0.tgz#53cf247acda77313e551c3aa2e73342d3fb4f7d9"
 
-esprima@~3.1.0:
-  version "3.1.3"
-  resolved "https://registry.yarnpkg.com/esprima/-/esprima-3.1.3.tgz#fdca51cee6133895e3c88d535ce49dbff62a4633"
-
 estraverse@^1.9.1:
   version "1.9.3"
   resolved "https://registry.yarnpkg.com/estraverse/-/estraverse-1.9.3.tgz#af67f2dc922582415950926091a4005d29c9bb44"
 
+estree-walker@^0.2.1:
+  version "0.2.1"
+  resolved "https://registry.yarnpkg.com/estree-walker/-/estree-walker-0.2.1.tgz#bdafe8095383d8414d5dc2ecf4c9173b6db9412e"
+
+estree-walker@^0.3.0:
+  version "0.3.0"
+  resolved "https://registry.yarnpkg.com/estree-walker/-/estree-walker-0.3.0.tgz#f67ca8f57b9ed66d886af816c099c779b315d4db"
+
 esutils@^2.0.2:
   version "2.0.2"
   resolved "https://registry.yarnpkg.com/esutils/-/esutils-2.0.2.tgz#0abf4f1caa5bcb1f7a9d8acc6dea4faaa04bac9b"
 
+evp_bytestokey@^1.0.0:
+  version "1.0.0"
+  resolved "https://registry.yarnpkg.com/evp_bytestokey/-/evp_bytestokey-1.0.0.tgz#497b66ad9fef65cd7c08a6180824ba1476b66e53"
+  dependencies:
+    create-hash "^1.1.1"
+
 exec-sh@^0.2.0:
   version "0.2.0"
   resolved "https://registry.yarnpkg.com/exec-sh/-/exec-sh-0.2.0.tgz#14f75de3f20d286ef933099b2ce50a90359cef10"
@@ -647,6 +944,10 @@ get-caller-file@^1.0.1:
   version "1.0.2"
   resolved "https://registry.yarnpkg.com/get-caller-file/-/get-caller-file-1.0.2.tgz#f702e63127e7e231c160a80c1554acb70d5047e5"
 
+get-stdin@^5.0.1:
+  version "5.0.1"
+  resolved "https://registry.yarnpkg.com/get-stdin/-/get-stdin-5.0.1.tgz#122e161591e21ff4c52530305693f20e6393a398"
+
 getpass@^0.1.1:
   version "0.1.6"
   resolved "https://registry.yarnpkg.com/getpass/-/getpass-0.1.6.tgz#283ffd9fc1256840875311c1b60e8c40187110e6"
@@ -722,6 +1023,12 @@ has-flag@^1.0.0:
   version "1.0.0"
   resolved "https://registry.yarnpkg.com/has-flag/-/has-flag-1.0.0.tgz#9d9e793165ce017a00f00418c43f942a7b1d11fa"
 
+hash.js@^1.0.0:
+  version "1.0.3"
+  resolved "https://registry.yarnpkg.com/hash.js/-/hash.js-1.0.3.tgz#1332ff00156c0a0ffdd8236013d07b77a0451573"
+  dependencies:
+    inherits "^2.0.1"
+
 hawk@~3.1.3:
   version "3.1.3"
   resolved "https://registry.yarnpkg.com/hawk/-/hawk-3.1.3.tgz#078444bd7c1640b0fe540d2c9b73d59678e8e1c4"
@@ -775,7 +1082,7 @@ inflight@^1.0.4:
     once "^1.3.0"
     wrappy "1"
 
-inherits@2:
+inherits@2, inherits@^2.0.1:
   version "2.0.3"
   resolved "https://registry.yarnpkg.com/inherits/-/inherits-2.0.3.tgz#633c2c83e3da42a502f52466022480f4208261de"
 
@@ -1330,6 +1637,10 @@ lodash.keys@^3.0.0:
     lodash.isarguments "^3.0.0"
     lodash.isarray "^3.0.0"
 
+lodash.some@^4.6.0:
+  version "4.6.0"
+  resolved "https://registry.yarnpkg.com/lodash.some/-/lodash.some-4.6.0.tgz#1bb9f314ef6b8baded13b549169b2a945eb68e4d"
+
 lodash@^4.14.0, lodash@^4.2.0:
   version "4.17.4"
   resolved "https://registry.yarnpkg.com/lodash/-/lodash-4.17.4.tgz#78203a4d1c328ae1d86dca6460e369b57f4055ae"
@@ -1344,6 +1655,12 @@ loose-envify@^1.0.0:
   dependencies:
     js-tokens "^2.0.0"
 
+magic-string@^0.19.0:
+  version "0.19.0"
+  resolved "https://registry.yarnpkg.com/magic-string/-/magic-string-0.19.0.tgz#198948217254e3e0b93080e01146b7c73b2a06b2"
+  dependencies:
+    vlq "^0.2.1"
+
 makeerror@1.0.x:
   version "1.0.11"
   resolved "https://registry.yarnpkg.com/makeerror/-/makeerror-1.0.11.tgz#e01a5c9109f2af79660e4e8b9587790184f5a96c"
@@ -1386,6 +1703,13 @@ micromatch@^2.3.11:
     parse-glob "^3.0.4"
     regex-cache "^0.4.2"
 
+miller-rabin@^4.0.0:
+  version "4.0.0"
+  resolved "https://registry.yarnpkg.com/miller-rabin/-/miller-rabin-4.0.0.tgz#4a62fb1d42933c05583982f4c716f6fb9e6c6d3d"
+  dependencies:
+    bn.js "^4.0.0"
+    brorand "^1.0.1"
+
 mime-db@~1.25.0:
   version "1.25.0"
   resolved "https://registry.yarnpkg.com/mime-db/-/mime-db-1.25.0.tgz#c18dbd7c73a5dbf6f44a024dc0d165a1e7b1c392"
@@ -1396,6 +1720,10 @@ mime-types@^2.1.12, mime-types@~2.1.7:
   dependencies:
     mime-db "~1.25.0"
 
+minimalistic-assert@^1.0.0:
+  version "1.0.0"
+  resolved "https://registry.yarnpkg.com/minimalistic-assert/-/minimalistic-assert-1.0.0.tgz#702be2dda6b37f4836bcb3f5db56641b64a1d3d3"
+
 minimatch@^3.0.2, minimatch@^3.0.3:
   version "3.0.3"
   resolved "https://registry.yarnpkg.com/minimatch/-/minimatch-3.0.3.tgz#2a4e4090b96b2db06a9d7df01055a62a77c9b774"
@@ -1520,6 +1848,16 @@ os-tmpdir@^1.0.1:
   version "1.0.2"
   resolved "https://registry.yarnpkg.com/os-tmpdir/-/os-tmpdir-1.0.2.tgz#bbe67406c79aa85c5cfec766fe5734555dfa1274"
 
+parse-asn1@^5.0.0:
+  version "5.0.0"
+  resolved "https://registry.yarnpkg.com/parse-asn1/-/parse-asn1-5.0.0.tgz#35060f6d5015d37628c770f4e091a0b5a278bc23"
+  dependencies:
+    asn1.js "^4.0.0"
+    browserify-aes "^1.0.0"
+    create-hash "^1.1.0"
+    evp_bytestokey "^1.0.0"
+    pbkdf2 "^3.0.3"
+
 parse-glob@^3.0.4:
   version "3.0.4"
   resolved "https://registry.yarnpkg.com/parse-glob/-/parse-glob-3.0.4.tgz#b2c376cfb11f35513badd173ef0bb6e3a388391c"
@@ -1561,6 +1899,12 @@ path-type@^1.0.0:
     pify "^2.0.0"
     pinkie-promise "^2.0.0"
 
+pbkdf2@^3.0.3:
+  version "3.0.9"
+  resolved "https://registry.yarnpkg.com/pbkdf2/-/pbkdf2-3.0.9.tgz#f2c4b25a600058b3c3773c086c37dbbee1ffe693"
+  dependencies:
+    create-hmac "^1.1.2"
+
 pify@^2.0.0:
   version "2.3.0"
   resolved "https://registry.yarnpkg.com/pify/-/pify-2.3.0.tgz#ed141a6ac043a849ea588498e7dca8b15330e90c"
@@ -1589,14 +1933,28 @@ pretty-format@^18.1.0:
   dependencies:
     ansi-styles "^2.2.1"
 
-private@^0.1.6, private@~0.1.5:
+private@^0.1.6:
   version "0.1.6"
   resolved "https://registry.yarnpkg.com/private/-/private-0.1.6.tgz#55c6a976d0f9bafb9924851350fe47b9b5fbb7c1"
 
+process-es6@^0.11.2:
+  version "0.11.6"
+  resolved "https://registry.yarnpkg.com/process-es6/-/process-es6-0.11.6.tgz#c6bb389f9a951f82bd4eb169600105bd2ff9c778"
+
 prr@~0.0.0:
   version "0.0.0"
   resolved "https://registry.yarnpkg.com/prr/-/prr-0.0.0.tgz#1a84b85908325501411853d0081ee3fa86e2926a"
 
+public-encrypt@^4.0.0:
+  version "4.0.0"
+  resolved "https://registry.yarnpkg.com/public-encrypt/-/public-encrypt-4.0.0.tgz#39f699f3a46560dd5ebacbca693caf7c65c18cc6"
+  dependencies:
+    bn.js "^4.1.0"
+    browserify-rsa "^4.0.0"
+    create-hash "^1.1.0"
+    parse-asn1 "^5.0.0"
+    randombytes "^2.0.1"
+
 punycode@^1.4.1:
   version "1.4.1"
   resolved "https://registry.yarnpkg.com/punycode/-/punycode-1.4.1.tgz#c0d5a63b2718800ad8e1eb0fa5269c84dd41845e"
@@ -1612,6 +1970,10 @@ randomatic@^1.1.3:
     is-number "^2.0.2"
     kind-of "^3.0.2"
 
+randombytes@^2.0.0, randombytes@^2.0.1:
+  version "2.0.3"
+  resolved "https://registry.yarnpkg.com/randombytes/-/randombytes-2.0.3.tgz#674c99760901c3c4112771a31e521dc349cc09ec"
+
 read-pkg-up@^1.0.1:
   version "1.0.1"
   resolved "https://registry.yarnpkg.com/read-pkg-up/-/read-pkg-up-1.0.1.tgz#9d63c13276c065918d57f002a57f40a1b643fb02"
@@ -1627,15 +1989,6 @@ read-pkg@^1.0.0:
     normalize-package-data "^2.3.2"
     path-type "^1.0.0"
 
-recast@^0.11.18:
-  version "0.11.18"
-  resolved "https://registry.yarnpkg.com/recast/-/recast-0.11.18.tgz#07af6257ca769868815209401d4d60eef1b5b947"
-  dependencies:
-    ast-types "0.9.2"
-    esprima "~3.1.0"
-    private "~0.1.5"
-    source-map "~0.5.0"
-
 redeyed@~1.0.0:
   version "1.0.1"
   resolved "https://registry.yarnpkg.com/redeyed/-/redeyed-1.0.1.tgz#e96c193b40c0816b00aec842698e61185e55498a"
@@ -1704,7 +2057,7 @@ resolve@1.1.7:
   version "1.1.7"
   resolved "https://registry.yarnpkg.com/resolve/-/resolve-1.1.7.tgz#203114d82ad2c5ed9e8e0411b3932875e889e97b"
 
-resolve@^1.2.0:
+resolve@^1.1.6, resolve@^1.1.7, resolve@^1.2.0:
   version "1.2.0"
   resolved "https://registry.yarnpkg.com/resolve/-/resolve-1.2.0.tgz#9589c3f2f6149d1417a40becc1663db6ec6bc26c"
 
@@ -1720,6 +2073,57 @@ rimraf@^2.4.3, rimraf@^2.4.4:
   dependencies:
     glob "^7.0.5"
 
+ripemd160@^1.0.0:
+  version "1.0.1"
+  resolved "https://registry.yarnpkg.com/ripemd160/-/ripemd160-1.0.1.tgz#93a4bbd4942bc574b69a8fa57c71de10ecca7d6e"
+
+rollup-plugin-commonjs@^7.0.0:
+  version "7.0.0"
+  resolved "https://registry.yarnpkg.com/rollup-plugin-commonjs/-/rollup-plugin-commonjs-7.0.0.tgz#510762d5c423c761cd16d8e8451715b39f0ceb08"
+  dependencies:
+    acorn "^4.0.1"
+    estree-walker "^0.3.0"
+    magic-string "^0.19.0"
+    resolve "^1.1.7"
+    rollup-pluginutils "^1.5.1"
+
+rollup-plugin-node-builtins@^2.0.0:
+  version "2.0.0"
+  resolved "https://registry.yarnpkg.com/rollup-plugin-node-builtins/-/rollup-plugin-node-builtins-2.0.0.tgz#c6f291e167e9560ebea87fbfdc1abb44b0a7c1e6"
+  dependencies:
+    buffer-es6 "^4.9.2"
+    crypto-browserify "^3.11.0"
+    process-es6 "^0.11.2"
+
+rollup-plugin-node-resolve@^2.0.0:
+  version "2.0.0"
+  resolved "https://registry.yarnpkg.com/rollup-plugin-node-resolve/-/rollup-plugin-node-resolve-2.0.0.tgz#07e0ae94ac002a3ea36e8f33ca121d9f836b1309"
+  dependencies:
+    browser-resolve "^1.11.0"
+    builtin-modules "^1.1.0"
+    resolve "^1.1.6"
+
+rollup-plugin-real-babili@^1.0.0-alpha3:
+  version "1.0.0-alpha3"
+  resolved "https://registry.yarnpkg.com/rollup-plugin-real-babili/-/rollup-plugin-real-babili-1.0.0-alpha3.tgz#11f7dff284726c18d925da5eb0aff783cc45e305"
+  dependencies:
+    "@comandeer/babel-plugin-banner" "^1.0.0"
+    babel-core "^6.21.0"
+    babel-preset-babili "0.0.9"
+
+rollup-pluginutils@^1.5.1:
+  version "1.5.2"
+  resolved "https://registry.yarnpkg.com/rollup-pluginutils/-/rollup-pluginutils-1.5.2.tgz#1e156e778f94b7255bfa1b3d0178be8f5c552408"
+  dependencies:
+    estree-walker "^0.2.1"
+    minimatch "^3.0.2"
+
+rollup@^0.41.1:
+  version "0.41.1"
+  resolved "https://registry.yarnpkg.com/rollup/-/rollup-0.41.1.tgz#5be8192c196c35977551e52ec0c98c3f83280525"
+  dependencies:
+    source-map-support "^0.4.0"
+
 sane@~1.4.1:
   version "1.4.1"
   resolved "https://registry.yarnpkg.com/sane/-/sane-1.4.1.tgz#88f763d74040f5f0c256b6163db399bf110ac715"
@@ -1743,6 +2147,12 @@ set-blocking@^2.0.0:
   version "2.0.0"
   resolved "https://registry.yarnpkg.com/set-blocking/-/set-blocking-2.0.0.tgz#045f9782d011ae9a6803ddd382b24392b3d890f7"
 
+sha.js@^2.3.6:
+  version "2.4.8"
+  resolved "https://registry.yarnpkg.com/sha.js/-/sha.js-2.4.8.tgz#37068c2c476b6baf402d14a49c67f597921f634f"
+  dependencies:
+    inherits "^2.0.1"
+
 shellwords@^0.1.0:
   version "0.1.0"
   resolved "https://registry.yarnpkg.com/shellwords/-/shellwords-0.1.0.tgz#66afd47b6a12932d9071cbfd98a52e785cd0ba14"
@@ -1757,7 +2167,7 @@ sntp@1.x.x:
   dependencies:
     hoek "2.x.x"
 
-source-map-support@^0.4.2:
+source-map-support@^0.4.0, source-map-support@^0.4.2:
   version "0.4.8"
   resolved "https://registry.yarnpkg.com/source-map-support/-/source-map-support-0.4.8.tgz#4871918d8a3af07289182e974e32844327b2e98b"
   dependencies:
@@ -1769,7 +2179,7 @@ source-map@^0.4.4:
   dependencies:
     amdefine ">=0.0.4"
 
-source-map@^0.5.0, source-map@^0.5.3, source-map@^0.5.6, source-map@~0.5.0, source-map@~0.5.1:
+source-map@^0.5.0, source-map@^0.5.3, source-map@^0.5.6, source-map@~0.5.1:
   version "0.5.6"
   resolved "https://registry.yarnpkg.com/source-map/-/source-map-0.5.6.tgz#75ce38f52bf0733c5a7f0c118d81334a2bb5f412"
 
@@ -1930,6 +2340,10 @@ verror@1.3.6:
   dependencies:
     extsprintf "1.0.2"
 
+vlq@^0.2.1:
+  version "0.2.1"
+  resolved "https://registry.yarnpkg.com/vlq/-/vlq-0.2.1.tgz#14439d711891e682535467f8587c5630e4222a6c"
+
 walker@~1.0.5:
   version "1.0.7"
   resolved "https://registry.yarnpkg.com/walker/-/walker-1.0.7.tgz#2f7f9b8fd10d677262b18a884e28d19618e028fb"