diff --git a/README.md b/README.md
index 1749db8..de4a555 100644
--- a/README.md
+++ b/README.md
@@ -25,22 +25,21 @@ lyo
 
 ## Options
 
-```sh
+```
 $ lyo --help
 
     Usage
-      $ lyo [options]       Run Lyo
-      $ lyo init [options]  Add Lyo to your project
+      $ lyo [options]        Run Lyo
+      $ lyo init [options]   Add Lyo to your project
+      $ lyo usage [options]  Show how to use the output file 
 
     Options
       --input    -i  Entry file
       --output   -o  Output file / folder
       --name     -n  Module name in browser
-      --usage    -u  Show how to use the output file 
 
     Examples
       $ lyo
-      $ lyo --usage
       $ lyo -i main.js
       $ lyo -n runMyFunction
       $ lyo -o dist/bundle.min.js
@@ -54,13 +53,13 @@ the following steps
 
 ### 1. Add Lyo to your project
 
-Run `lyo init` (with options) will edit your `package.json` as follows:
+Run `lyo init` (with options) to edit your `package.json` as follows:
 
 - Lyo will be added to the dev dependencies
 - A pre-publish script will be created (or edited) so Lyo is triggered before every `npm publish`
 - If you provide options, they will be saved as default options (you can change/remove them later)
 
-```sh 
+```
 # Example with some random options
 $ lyo init -i lib/main.js -n runMyModule
 ```
@@ -70,14 +69,13 @@ Don't forget to run `npm install` after that
 
 ### 2. Add documentation
 
-Use Lyo with the `--usage` option to show an example code snippet. You can edit and include it in your `README.md`.
+Run `lyo usage` (with options) to show an example code snippet. You can edit and include it in your `README.md`.
 Don't forget to check that the version is correct, or replace it with `latest`
 
-```sh 
-$ lyo --usage
-> ...
-> Lyo finished successfully!
-> Edit and include the following in your README.md
+```
+$ lyo usage
+
+> Edit and include the following snippet in your README.md
 ```
 ![HTML example](https://i.imgur.com/xryNOT5.png)
 
diff --git a/bin/cli.js b/bin/cli.js
index d6e6663..da0776a 100644
--- a/bin/cli.js
+++ b/bin/cli.js
@@ -3,21 +3,21 @@
 const meow = require('meow');
 const lyo = require('..');
 const init = require('../lib/init');
+const usage = require('../lib/usage');
 
 const cli = meow(`
     Usage
-      $ lyo [options]       Run Lyo
-      $ lyo init [options]  Add Lyo to your project
+      $ lyo [options]        Run Lyo
+      $ lyo init [options]   Add Lyo to your project
+      $ lyo usage [options]  Show how to use the output file 
  
     Options
       --input    -i  Entry file
       --output   -o  Output file / folder
  	  --name     -n  Module name in browser
- 	  --usage    -u  Show how to use the output file 
 
     Examples
       $ lyo
-      $ lyo --usage
       $ lyo -i main.js
       $ lyo -n checkThings
       $ lyo -o dist/bundle.min.js
@@ -25,8 +25,7 @@ const cli = meow(`
 	flags: {
 		input: {type: 'string', alias: 'i'},
 		output: {type: 'string', alias: 'o'},
-		name: {type: 'string', alias: 'n'},
-		usage: {type: 'boolean', alias: 'u'}
+		name: {type: 'string', alias: 'n'}
 	},
 	description: 'Lyo'
 });
@@ -35,6 +34,9 @@ switch (cli.input[0]) {
 	case 'init':
 		init(cli.flags);
 		break;
+	case 'usage':
+		usage.getUsage(cli.flags);
+		break;
 	case undefined:
 		lyo(cli.flags);
 		break;
diff --git a/lib/display.js b/lib/display.js
index 02e08de..6d8cc5e 100644
--- a/lib/display.js
+++ b/lib/display.js
@@ -1,16 +1,10 @@
 #! /usr/bin/env node
 'use strict';
 
-const path = require('path');
 const chalk = require('chalk');
 
-const pkg = require(path.join(process.cwd(), 'package.json'));
-
-function succeed(opts) {
+function succeed() {
 	console.info(chalk.green.underline('\nLyo finished successfully!'));
-	if (opts.usage) {
-		usage(opts);
-	}
 }
 
 function options(opts) {
@@ -20,22 +14,4 @@ function options(opts) {
 `);
 }
 
-function usage(opts) {
-	const localPath = opts.output.replace(/\\/g, '/');
-	const distPath = `https://cdn.jsdelivr.net/npm/${pkg.name}@${pkg.version}/${localPath}`;
-
-	console.info(chalk`
-Edit and include the following in your {magenta README.md}
-
-{gray <!-- local usage -->}
-{yellow <script} src="{green ${localPath}}">{yellow </script>}
-{gray <!-- CDN usage -->}
-{yellow <script} src="{green ${distPath}}">{yellow </script>}
-
-{yellow <script>}
-  {blue ${opts.name}}()
-{yellow </script>}
-`);
-}
-
-module.exports = {succeed, options, usage};
+module.exports = {succeed, options};
diff --git a/lib/usage.js b/lib/usage.js
new file mode 100644
index 0000000..204669b
--- /dev/null
+++ b/lib/usage.js
@@ -0,0 +1,64 @@
+const path = require('path');
+
+const chalk = require('chalk');
+const indentString = require('indent-string');
+const display = require('./display');
+const parseOptions = require('./options');
+
+const pkg = require(path.join(process.cwd(), 'package.json'));
+
+function getUsage(flags) {
+	const opts = parseOptions(flags, pkg);
+	display.options(opts);
+
+	const signature = getModuleSignature(opts);
+
+	printUsage(opts, signature);
+}
+
+function printUsage(opts, signature) {
+	const localPath = opts.output.replace(/\\/g, '/');
+	const distPath = `https://cdn.jsdelivr.net/npm/${pkg.name}@${pkg.version}/${localPath}`;
+
+	console.info(chalk`
+Edit and include the following snippet in your {magenta README.md}
+
+{gray <!-- local usage -->}
+{yellow <script} src="{green ${localPath}}">{yellow </script>}
+{gray <!-- CDN usage -->}
+{yellow <script} src="{green ${distPath}}">{yellow </script>}
+` + (signature ? chalk`
+{yellow <script>}
+{blue ${indentString(signature, 2)}}
+{yellow </script>}
+` : ''));
+}
+
+function getModuleSignature(opts) {
+	const module = require(path.resolve(opts.input));
+
+	if (typeof module === 'function') {
+		return getFunctionSignature(module, opts.name);
+	}
+
+	if (typeof module === 'object') {
+		const res = [];
+		for (const prop in module) {
+			if (module.hasOwnProperty(prop) && typeof module[prop] === 'function') {
+				res.push(`${opts.name}.${getFunctionSignature(module[prop], prop)}`);
+			}
+		}
+		return res.join('\n');
+	}
+	return '';
+}
+
+function getFunctionSignature(fn, name) {
+	const placeHolders = ['foo', 'bar', 'baz', 'qux'];
+	if (fn.length > placeHolders.length) {
+		return `${name}(args...);`;
+	}
+	return `${name}(${placeHolders.slice(0, fn.length).join(', ')});`;
+}
+
+module.exports = {getUsage, getModuleSignature};
diff --git a/package-lock.json b/package-lock.json
index 42b655b..bce38da 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,6 +1,6 @@
 {
   "name": "lyo",
-  "version": "0.2.0",
+  "version": "0.3.0",
   "lockfileVersion": 1,
   "requires": true,
   "dependencies": {
@@ -16,18 +16,18 @@
       "integrity": "sha512-oWqTnIGXW3k72UFidXzW0ONlO7hnO9x02S/QReJ7NBGeiBH9cUHY9+EfV6C8PXC6YJH++WrliEq03wMSJGNZFg==",
       "dev": true,
       "requires": {
-        "babel-plugin-check-es2015-constants": "^6.8.0",
-        "babel-plugin-syntax-trailing-function-commas": "^6.20.0",
-        "babel-plugin-transform-async-to-generator": "^6.16.0",
-        "babel-plugin-transform-es2015-destructuring": "^6.19.0",
-        "babel-plugin-transform-es2015-function-name": "^6.9.0",
-        "babel-plugin-transform-es2015-modules-commonjs": "^6.18.0",
-        "babel-plugin-transform-es2015-parameters": "^6.21.0",
-        "babel-plugin-transform-es2015-spread": "^6.8.0",
-        "babel-plugin-transform-es2015-sticky-regex": "^6.8.0",
-        "babel-plugin-transform-es2015-unicode-regex": "^6.11.0",
-        "babel-plugin-transform-exponentiation-operator": "^6.8.0",
-        "package-hash": "^1.2.0"
+        "babel-plugin-check-es2015-constants": "6.22.0",
+        "babel-plugin-syntax-trailing-function-commas": "6.22.0",
+        "babel-plugin-transform-async-to-generator": "6.24.1",
+        "babel-plugin-transform-es2015-destructuring": "6.23.0",
+        "babel-plugin-transform-es2015-function-name": "6.24.1",
+        "babel-plugin-transform-es2015-modules-commonjs": "6.26.2",
+        "babel-plugin-transform-es2015-parameters": "6.24.1",
+        "babel-plugin-transform-es2015-spread": "6.22.0",
+        "babel-plugin-transform-es2015-sticky-regex": "6.24.1",
+        "babel-plugin-transform-es2015-unicode-regex": "6.24.1",
+        "babel-plugin-transform-exponentiation-operator": "6.24.1",
+        "package-hash": "1.2.0"
       },
       "dependencies": {
         "md5-hex": {
@@ -36,7 +36,7 @@
           "integrity": "sha1-0sSv6YPENwZiF5uMrRRSGRNQRsQ=",
           "dev": true,
           "requires": {
-            "md5-o-matic": "^0.1.1"
+            "md5-o-matic": "0.1.1"
           }
         },
         "package-hash": {
@@ -45,7 +45,7 @@
           "integrity": "sha1-AD5WzVe3NqbtYRTMK4FUJnJ3DkQ=",
           "dev": true,
           "requires": {
-            "md5-hex": "^1.3.0"
+            "md5-hex": "1.3.0"
           }
         }
       }
@@ -56,8 +56,8 @@
       "integrity": "sha1-ze0RlqjY2TgaUJJAq5LpGl7Aafc=",
       "dev": true,
       "requires": {
-        "@ava/babel-plugin-throws-helper": "^2.0.0",
-        "babel-plugin-espower": "^2.3.2"
+        "@ava/babel-plugin-throws-helper": "2.0.0",
+        "babel-plugin-espower": "2.4.0"
       }
     },
     "@ava/write-file-atomic": {
@@ -66,9 +66,9 @@
       "integrity": "sha512-BTNB3nGbEfJT+69wuqXFr/bQH7Vr7ihx2xGOMNqPgDGhwspoZhiWumDDZNjBy7AScmqS5CELIOGtPVXESyrnDA==",
       "dev": true,
       "requires": {
-        "graceful-fs": "^4.1.11",
-        "imurmurhash": "^0.1.4",
-        "slide": "^1.1.5"
+        "graceful-fs": "4.1.11",
+        "imurmurhash": "0.1.4",
+        "slide": "1.1.6"
       }
     },
     "@babel/code-frame": {
@@ -76,7 +76,7 @@
       "resolved": "https://registry.npmjs.org/@babel/code-frame/-/code-frame-7.0.0.tgz",
       "integrity": "sha512-OfC2uemaknXr87bdLUkWog7nYuliM9Ij5HUcajsVcMCpQrcLmtxRbVFTIqmcSkSeYRBFBRxs2FiUqFJDLdiebA==",
       "requires": {
-        "@babel/highlight": "^7.0.0"
+        "@babel/highlight": "7.0.0"
       }
     },
     "@babel/core": {
@@ -84,20 +84,20 @@
       "resolved": "https://registry.npmjs.org/@babel/core/-/core-7.0.0.tgz",
       "integrity": "sha512-nrvxS5u6QUN5gLl1GEakIcmOeoUHT1/gQtdMRq18WFURJ5osn4ppJLVSseMQo4zVWKJfBTF4muIYijXUnKlRLQ==",
       "requires": {
-        "@babel/code-frame": "^7.0.0",
-        "@babel/generator": "^7.0.0",
-        "@babel/helpers": "^7.0.0",
-        "@babel/parser": "^7.0.0",
-        "@babel/template": "^7.0.0",
-        "@babel/traverse": "^7.0.0",
-        "@babel/types": "^7.0.0",
-        "convert-source-map": "^1.1.0",
-        "debug": "^3.1.0",
-        "json5": "^0.5.0",
-        "lodash": "^4.17.10",
-        "resolve": "^1.3.2",
-        "semver": "^5.4.1",
-        "source-map": "^0.5.0"
+        "@babel/code-frame": "7.0.0",
+        "@babel/generator": "7.0.0",
+        "@babel/helpers": "7.0.0",
+        "@babel/parser": "7.0.0",
+        "@babel/template": "7.0.0",
+        "@babel/traverse": "7.0.0",
+        "@babel/types": "7.0.0",
+        "convert-source-map": "1.1.3",
+        "debug": "3.1.0",
+        "json5": "0.5.1",
+        "lodash": "4.17.10",
+        "resolve": "1.8.1",
+        "semver": "5.5.1",
+        "source-map": "0.5.7"
       },
       "dependencies": {
         "debug": {
@@ -115,11 +115,11 @@
       "resolved": "https://registry.npmjs.org/@babel/generator/-/generator-7.0.0.tgz",
       "integrity": "sha512-/BM2vupkpbZXq22l1ALO7MqXJZH2k8bKVv8Y+pABFnzWdztDB/ZLveP5At21vLz5c2YtSE6p7j2FZEsqafMz5Q==",
       "requires": {
-        "@babel/types": "^7.0.0",
-        "jsesc": "^2.5.1",
-        "lodash": "^4.17.10",
-        "source-map": "^0.5.0",
-        "trim-right": "^1.0.1"
+        "@babel/types": "7.0.0",
+        "jsesc": "2.5.1",
+        "lodash": "4.17.10",
+        "source-map": "0.5.7",
+        "trim-right": "1.0.1"
       },
       "dependencies": {
         "jsesc": {
@@ -134,7 +134,7 @@
       "resolved": "https://registry.npmjs.org/@babel/helper-annotate-as-pure/-/helper-annotate-as-pure-7.0.0.tgz",
       "integrity": "sha512-3UYcJUj9kvSLbLbUIfQTqzcy5VX7GRZ/CCDrnOaZorFFM01aXp1+GJwuFGV4NDDoAS+mOUyHcO6UD/RfqOks3Q==",
       "requires": {
-        "@babel/types": "^7.0.0"
+        "@babel/types": "7.0.0"
       }
     },
     "@babel/helper-builder-binary-assignment-operator-visitor": {
@@ -142,8 +142,8 @@
       "resolved": "https://registry.npmjs.org/@babel/helper-builder-binary-assignment-operator-visitor/-/helper-builder-binary-assignment-operator-visitor-7.0.0.tgz",
       "integrity": "sha512-9HdU8lrAc4FUZOy+y2w//kUhynSpkGIRYDzJW1oKJx7+v8m6UEAbAd2tSvxirsq2kJTXJZZS6Eo8FnUDUH0ZWw==",
       "requires": {
-        "@babel/helper-explode-assignable-expression": "^7.0.0",
-        "@babel/types": "^7.0.0"
+        "@babel/helper-explode-assignable-expression": "7.0.0",
+        "@babel/types": "7.0.0"
       }
     },
     "@babel/helper-call-delegate": {
@@ -151,9 +151,9 @@
       "resolved": "https://registry.npmjs.org/@babel/helper-call-delegate/-/helper-call-delegate-7.0.0.tgz",
       "integrity": "sha512-HdYG6vr4KgXHK0q1QRZ8guoYCF5rZjIdPlhcVY+j4EBK/FDR+cXRM5/6lQr3NIWDc7dO1KfgjG5rfH6lM89VBw==",
       "requires": {
-        "@babel/helper-hoist-variables": "^7.0.0",
-        "@babel/traverse": "^7.0.0",
-        "@babel/types": "^7.0.0"
+        "@babel/helper-hoist-variables": "7.0.0",
+        "@babel/traverse": "7.0.0",
+        "@babel/types": "7.0.0"
       }
     },
     "@babel/helper-define-map": {
@@ -161,9 +161,9 @@
       "resolved": "https://registry.npmjs.org/@babel/helper-define-map/-/helper-define-map-7.0.0.tgz",
       "integrity": "sha512-acbCxYS9XufWxsBiclmXMK1CFz7en/XSYvHFcbb3Jb8BqjFEBrA46WlIsoSQTRG/eYN60HciUnzdyQxOZhrHfw==",
       "requires": {
-        "@babel/helper-function-name": "^7.0.0",
-        "@babel/types": "^7.0.0",
-        "lodash": "^4.17.10"
+        "@babel/helper-function-name": "7.0.0",
+        "@babel/types": "7.0.0",
+        "lodash": "4.17.10"
       }
     },
     "@babel/helper-explode-assignable-expression": {
@@ -171,8 +171,8 @@
       "resolved": "https://registry.npmjs.org/@babel/helper-explode-assignable-expression/-/helper-explode-assignable-expression-7.0.0.tgz",
       "integrity": "sha512-5gLPwdDnYf8GfPsjS+UmZUtYE1jaXTFm1P+ymGobqvXbA0q3ANgpH60+C6zDrRAWXYbQXYvzzQC/r0gJVNNltQ==",
       "requires": {
-        "@babel/traverse": "^7.0.0",
-        "@babel/types": "^7.0.0"
+        "@babel/traverse": "7.0.0",
+        "@babel/types": "7.0.0"
       }
     },
     "@babel/helper-function-name": {
@@ -180,9 +180,9 @@
       "resolved": "https://registry.npmjs.org/@babel/helper-function-name/-/helper-function-name-7.0.0.tgz",
       "integrity": "sha512-Zo+LGvfYp4rMtz84BLF3bavFTdf8y4rJtMPTe2J+rxYmnDOIeH8le++VFI/pRJU+rQhjqiXxE4LMaIau28Tv1Q==",
       "requires": {
-        "@babel/helper-get-function-arity": "^7.0.0",
-        "@babel/template": "^7.0.0",
-        "@babel/types": "^7.0.0"
+        "@babel/helper-get-function-arity": "7.0.0",
+        "@babel/template": "7.0.0",
+        "@babel/types": "7.0.0"
       }
     },
     "@babel/helper-get-function-arity": {
@@ -190,7 +190,7 @@
       "resolved": "https://registry.npmjs.org/@babel/helper-get-function-arity/-/helper-get-function-arity-7.0.0.tgz",
       "integrity": "sha512-r2DbJeg4svYvt3HOS74U4eWKsUAMRH01Z1ds1zx8KNTPtpTL5JAsdFv8BNyOpVqdFhHkkRDIg5B4AsxmkjAlmQ==",
       "requires": {
-        "@babel/types": "^7.0.0"
+        "@babel/types": "7.0.0"
       }
     },
     "@babel/helper-hoist-variables": {
@@ -198,7 +198,7 @@
       "resolved": "https://registry.npmjs.org/@babel/helper-hoist-variables/-/helper-hoist-variables-7.0.0.tgz",
       "integrity": "sha512-Ggv5sldXUeSKsuzLkddtyhyHe2YantsxWKNi7A+7LeD12ExRDWTRk29JCXpaHPAbMaIPZSil7n+lq78WY2VY7w==",
       "requires": {
-        "@babel/types": "^7.0.0"
+        "@babel/types": "7.0.0"
       }
     },
     "@babel/helper-member-expression-to-functions": {
@@ -206,7 +206,7 @@
       "resolved": "https://registry.npmjs.org/@babel/helper-member-expression-to-functions/-/helper-member-expression-to-functions-7.0.0.tgz",
       "integrity": "sha512-avo+lm/QmZlv27Zsi0xEor2fKcqWG56D5ae9dzklpIaY7cQMK5N8VSpaNVPPagiqmy7LrEjK1IWdGMOqPu5csg==",
       "requires": {
-        "@babel/types": "^7.0.0"
+        "@babel/types": "7.0.0"
       }
     },
     "@babel/helper-module-imports": {
@@ -214,7 +214,7 @@
       "resolved": "https://registry.npmjs.org/@babel/helper-module-imports/-/helper-module-imports-7.0.0.tgz",
       "integrity": "sha512-aP/hlLq01DWNEiDg4Jn23i+CXxW/owM4WpDLFUbpjxe4NS3BhLVZQ5i7E0ZrxuQ/vwekIeciyamgB1UIYxxM6A==",
       "requires": {
-        "@babel/types": "^7.0.0"
+        "@babel/types": "7.0.0"
       }
     },
     "@babel/helper-module-transforms": {
@@ -222,12 +222,12 @@
       "resolved": "https://registry.npmjs.org/@babel/helper-module-transforms/-/helper-module-transforms-7.0.0.tgz",
       "integrity": "sha512-QdwmTTlPmT7TZcf30dnqm8pem+o48tVt991xXogE5CQCwqSpWKuzH2E9v8VWeccQ66a6/CmrLZ+bwp66JYeM5A==",
       "requires": {
-        "@babel/helper-module-imports": "^7.0.0",
-        "@babel/helper-simple-access": "^7.0.0",
-        "@babel/helper-split-export-declaration": "^7.0.0",
-        "@babel/template": "^7.0.0",
-        "@babel/types": "^7.0.0",
-        "lodash": "^4.17.10"
+        "@babel/helper-module-imports": "7.0.0",
+        "@babel/helper-simple-access": "7.0.0",
+        "@babel/helper-split-export-declaration": "7.0.0",
+        "@babel/template": "7.0.0",
+        "@babel/types": "7.0.0",
+        "lodash": "4.17.10"
       }
     },
     "@babel/helper-optimise-call-expression": {
@@ -235,7 +235,7 @@
       "resolved": "https://registry.npmjs.org/@babel/helper-optimise-call-expression/-/helper-optimise-call-expression-7.0.0.tgz",
       "integrity": "sha512-u8nd9NQePYNQV8iPWu/pLLYBqZBa4ZaY1YWRFMuxrid94wKI1QNt67NEZ7GAe5Kc/0LLScbim05xZFWkAdrj9g==",
       "requires": {
-        "@babel/types": "^7.0.0"
+        "@babel/types": "7.0.0"
       }
     },
     "@babel/helper-plugin-utils": {
@@ -248,7 +248,7 @@
       "resolved": "https://registry.npmjs.org/@babel/helper-regex/-/helper-regex-7.0.0.tgz",
       "integrity": "sha512-TR0/N0NDCcUIUEbqV6dCO+LptmmSQFQ7q70lfcEB4URsjD0E1HzicrwUH+ap6BAQ2jhCX9Q4UqZy4wilujWlkg==",
       "requires": {
-        "lodash": "^4.17.10"
+        "lodash": "4.17.10"
       }
     },
     "@babel/helper-remap-async-to-generator": {
@@ -256,11 +256,11 @@
       "resolved": "https://registry.npmjs.org/@babel/helper-remap-async-to-generator/-/helper-remap-async-to-generator-7.0.0.tgz",
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       "requires": {
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@@ -968,7 +968,7 @@
           "integrity": "sha1-3wcoTjQqgHzXM6xa9yQR5YHRF3s=",
           "dev": true,
           "requires": {
-            "is-posix-bracket": "^0.1.0"
+            "is-posix-bracket": "0.1.1"
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@@ -977,7 +977,7 @@
           "integrity": "sha1-Lhj/PS9JqydlzskCPwEdqo2DSaE=",
           "dev": true,
           "requires": {
-            "is-extglob": "^1.0.0"
+            "is-extglob": "1.0.0"
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@@ -992,7 +992,7 @@
           "integrity": "sha1-0Jb5JqPe1WAPP9/ZEZjLCIjC2GM=",
           "dev": true,
           "requires": {
-            "is-extglob": "^1.0.0"
+            "is-extglob": "1.0.0"
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@@ -1001,19 +1001,19 @@
           "integrity": "sha1-hmd8l9FyCzY0MdBNDRUpO9OMFWU=",
           "dev": true,
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-            "object.omit": "^2.0.0",
-            "parse-glob": "^3.0.4",
-            "regex-cache": "^0.4.2"
+            "arr-diff": "2.0.0",
+            "array-unique": "0.2.1",
+            "braces": "1.8.5",
+            "expand-brackets": "0.1.5",
+            "extglob": "0.3.2",
+            "filename-regex": "2.0.1",
+            "is-extglob": "1.0.0",
+            "is-glob": "2.0.1",
+            "kind-of": "3.2.2",
+            "normalize-path": "2.1.1",
+            "object.omit": "2.0.1",
+            "parse-glob": "3.0.4",
+            "regex-cache": "0.4.4"
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@@ -1024,7 +1024,7 @@
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       "dev": true,
       "requires": {
-        "sprintf-js": "~1.0.2"
+        "sprintf-js": "1.0.3"
       }
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     "argv": {
@@ -1089,7 +1089,7 @@
       "integrity": "sha1-mjRBDk9OPaI96jdb5b5w8kd47Dk=",
       "dev": true,
       "requires": {
-        "array-uniq": "^1.0.1"
+        "array-uniq": "1.0.3"
       }
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     "array-uniq": {
@@ -1115,7 +1115,7 @@
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       "dev": true,
       "requires": {
-        "safer-buffer": "~2.1.0"
+        "safer-buffer": "2.1.2"
       }
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     "asn1.js": {
@@ -1123,9 +1123,9 @@
       "resolved": "https://registry.npmjs.org/asn1.js/-/asn1.js-4.10.1.tgz",
       "integrity": "sha512-p32cOF5q0Zqs9uBiONKYLm6BClCoBCM5O9JfeUSlnQLBTxYdTK+pW+nXflm8UkKd2UYlEbYz5qEi0JuZR9ckSw==",
       "requires": {
-        "bn.js": "^4.0.0",
-        "inherits": "^2.0.1",
-        "minimalistic-assert": "^1.0.0"
+        "bn.js": "4.11.8",
+        "inherits": "2.0.3",
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@@ -1193,89 +1193,89 @@
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-        "ms": "^2.0.0",
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-        "trim-off-newlines": "^1.0.1",
-        "unique-temp-dir": "^1.0.0",
-        "update-notifier": "^2.3.0"
+        "@ava/babel-preset-stage-4": "1.1.0",
+        "@ava/babel-preset-transform-test-files": "3.0.0",
+        "@ava/write-file-atomic": "2.2.0",
+        "@concordance/react": "1.0.0",
+        "@ladjs/time-require": "0.1.4",
+        "ansi-escapes": "3.1.0",
+        "ansi-styles": "3.2.1",
+        "arr-flatten": "1.1.0",
+        "array-union": "1.0.2",
+        "array-uniq": "1.0.3",
+        "arrify": "1.0.1",
+        "auto-bind": "1.2.1",
+        "ava-init": "0.2.1",
+        "babel-core": "6.26.3",
+        "babel-generator": "6.26.1",
+        "babel-plugin-syntax-object-rest-spread": "6.13.0",
+        "bluebird": "3.5.1",
+        "caching-transform": "1.0.1",
+        "chalk": "2.4.1",
+        "chokidar": "1.7.0",
+        "clean-stack": "1.3.0",
+        "clean-yaml-object": "0.1.0",
+        "cli-cursor": "2.1.0",
+        "cli-spinners": "1.3.1",
+        "cli-truncate": "1.1.0",
+        "co-with-promise": "4.6.0",
+        "code-excerpt": "2.1.1",
+        "common-path-prefix": "1.0.0",
+        "concordance": "3.0.0",
+        "convert-source-map": "1.5.1",
+        "core-assert": "0.2.1",
+        "currently-unhandled": "0.4.1",
+        "debug": "3.1.0",
+        "dot-prop": "4.2.0",
+        "empower-core": "0.6.2",
+        "equal-length": "1.0.1",
+        "figures": "2.0.0",
+        "find-cache-dir": "1.0.0",
+        "fn-name": "2.0.1",
+        "get-port": "3.2.0",
+        "globby": "6.1.0",
+        "has-flag": "2.0.0",
+        "hullabaloo-config-manager": "1.1.1",
+        "ignore-by-default": "1.0.1",
+        "import-local": "0.1.1",
+        "indent-string": "3.2.0",
+        "is-ci": "1.2.0",
+        "is-generator-fn": "1.0.0",
+        "is-obj": "1.0.1",
+        "is-observable": "1.1.0",
+        "is-promise": "2.1.0",
+        "last-line-stream": "1.0.0",
+        "lodash.clonedeepwith": "4.5.0",
+        "lodash.debounce": "4.0.8",
+        "lodash.difference": "4.5.0",
+        "lodash.flatten": "4.4.0",
+        "loud-rejection": "1.6.0",
+        "make-dir": "1.3.0",
+        "matcher": "1.1.1",
+        "md5-hex": "2.0.0",
+        "meow": "3.7.0",
+        "ms": "2.0.0",
+        "multimatch": "2.1.0",
+        "observable-to-promise": "0.5.0",
+        "option-chain": "1.0.0",
+        "package-hash": "2.0.0",
+        "pkg-conf": "2.1.0",
+        "plur": "2.1.2",
+        "pretty-ms": "3.2.0",
+        "require-precompiled": "0.1.0",
+        "resolve-cwd": "2.0.0",
+        "safe-buffer": "5.1.2",
+        "semver": "5.5.1",
+        "slash": "1.0.0",
+        "source-map-support": "0.5.9",
+        "stack-utils": "1.0.1",
+        "strip-ansi": "4.0.0",
+        "strip-bom-buf": "1.0.0",
+        "supertap": "1.0.0",
+        "supports-color": "5.5.0",
+        "trim-off-newlines": "1.0.1",
+        "unique-temp-dir": "1.0.0",
+        "update-notifier": "2.5.0"
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@@ -1290,8 +1290,8 @@
           "integrity": "sha1-MIvur/3ygRkFHvodkyITyRuPkuc=",
           "dev": true,
           "requires": {
-            "camelcase": "^2.0.0",
-            "map-obj": "^1.0.0"
+            "camelcase": "2.1.1",
+            "map-obj": "1.0.1"
           }
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@@ -1306,8 +1306,8 @@
           "integrity": "sha1-ay6YIrGizgpgq2TWEOzK1TyyTQ8=",
           "dev": true,
           "requires": {
-            "path-exists": "^2.0.0",
-            "pinkie-promise": "^2.0.0"
+            "path-exists": "2.1.0",
+            "pinkie-promise": "2.0.1"
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         "get-stdin": {
@@ -1322,11 +1322,11 @@
           "integrity": "sha1-9abXDoOV4hyFj7BInWTfAkJNUGw=",
           "dev": true,
           "requires": {
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-            "glob": "^7.0.3",
-            "object-assign": "^4.0.1",
-            "pify": "^2.0.0",
-            "pinkie-promise": "^2.0.0"
+            "array-union": "1.0.2",
+            "glob": "7.1.3",
+            "object-assign": "4.1.1",
+            "pify": "2.3.0",
+            "pinkie-promise": "2.0.1"
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@@ -1341,11 +1341,11 @@
           "integrity": "sha1-lWkFcI1YtLq0wiYbBPWfMcmTdMA=",
           "dev": true,
           "requires": {
-            "graceful-fs": "^4.1.2",
-            "parse-json": "^2.2.0",
-            "pify": "^2.0.0",
-            "pinkie-promise": "^2.0.0",
-            "strip-bom": "^2.0.0"
+            "graceful-fs": "4.1.11",
+            "parse-json": "2.2.0",
+            "pify": "2.3.0",
+            "pinkie-promise": "2.0.1",
+            "strip-bom": "2.0.0"
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@@ -1360,16 +1360,16 @@
           "integrity": "sha1-cstmi0JSKCkKu/qFaJJYcwioAfs=",
           "dev": true,
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-            "decamelize": "^1.1.2",
-            "loud-rejection": "^1.0.0",
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-            "object-assign": "^4.0.1",
-            "read-pkg-up": "^1.0.1",
-            "redent": "^1.0.0",
-            "trim-newlines": "^1.0.0"
+            "camelcase-keys": "2.1.0",
+            "decamelize": "1.2.0",
+            "loud-rejection": "1.6.0",
+            "map-obj": "1.0.1",
+            "minimist": "1.2.0",
+            "normalize-package-data": "2.4.0",
+            "object-assign": "4.1.1",
+            "read-pkg-up": "1.0.1",
+            "redent": "1.0.0",
+            "trim-newlines": "1.0.0"
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@@ -1378,7 +1378,7 @@
           "integrity": "sha1-9ID0BDTvgHQfhGkJn43qGPVaTck=",
           "dev": true,
           "requires": {
-            "error-ex": "^1.2.0"
+            "error-ex": "1.3.2"
           }
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@@ -1387,7 +1387,7 @@
           "integrity": "sha1-D+tsZPD8UY2adU3V77YscCJ2H0s=",
           "dev": true,
           "requires": {
-            "pinkie-promise": "^2.0.0"
+            "pinkie-promise": "2.0.1"
           }
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         "path-type": {
@@ -1396,9 +1396,9 @@
           "integrity": "sha1-WcRPfuSR2nBNpBXaWkBwuk+P5EE=",
           "dev": true,
           "requires": {
-            "graceful-fs": "^4.1.2",
-            "pify": "^2.0.0",
-            "pinkie-promise": "^2.0.0"
+            "graceful-fs": "4.1.11",
+            "pify": "2.3.0",
+            "pinkie-promise": "2.0.1"
           }
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         "pify": {
@@ -1413,9 +1413,9 @@
           "integrity": "sha1-9f+qXs0pyzHAR0vKfXVra7KePyg=",
           "dev": true,
           "requires": {
-            "load-json-file": "^1.0.0",
-            "normalize-package-data": "^2.3.2",
-            "path-type": "^1.0.0"
+            "load-json-file": "1.1.0",
+            "normalize-package-data": "2.4.0",
+            "path-type": "1.1.0"
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@@ -1424,8 +1424,8 @@
           "integrity": "sha1-nWPBMnbAZZGNV/ACpX9AobZD+wI=",
           "dev": true,
           "requires": {
-            "find-up": "^1.0.0",
-            "read-pkg": "^1.0.0"
+            "find-up": "1.1.2",
+            "read-pkg": "1.1.0"
           }
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         "redent": {
@@ -1434,8 +1434,8 @@
           "integrity": "sha1-z5Fqsf1fHxbfsggi3W7H9zDCr94=",
           "dev": true,
           "requires": {
-            "indent-string": "^2.1.0",
-            "strip-indent": "^1.0.1"
+            "indent-string": "2.1.0",
+            "strip-indent": "1.0.1"
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@@ -1444,7 +1444,7 @@
               "integrity": "sha1-ji1INIdCEhtKghi3oTfppSBJ3IA=",
               "dev": true,
               "requires": {
-                "repeating": "^2.0.0"
+                "repeating": "2.0.1"
               }
             }
           }
@@ -1461,7 +1461,7 @@
           "integrity": "sha1-YhmoVhZSBJHzV4i9vxRHqZx+aw4=",
           "dev": true,
           "requires": {
-            "is-utf8": "^0.2.0"
+            "is-utf8": "0.2.1"
           }
         },
         "strip-indent": {
@@ -1470,7 +1470,7 @@
           "integrity": "sha1-DHlipq3vp7vUrDZkYKY4VSrhoKI=",
           "dev": true,
           "requires": {
-            "get-stdin": "^4.0.1"
+            "get-stdin": "4.0.1"
           }
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         "trim-newlines": {
@@ -1487,11 +1487,11 @@
       "integrity": "sha512-lXwK5LM+2g1euDRqW1mcSX/tqzY1QU7EjKpqayFPPtNRmbSYZ8RzPO5tqluTToijmtjp2M+pNpVdbcHssC4glg==",
       "dev": true,
       "requires": {
-        "arr-exclude": "^1.0.0",
-        "execa": "^0.7.0",
-        "has-yarn": "^1.0.0",
-        "read-pkg-up": "^2.0.0",
-        "write-pkg": "^3.1.0"
+        "arr-exclude": "1.0.0",
+        "execa": "0.7.0",
+        "has-yarn": "1.0.0",
+        "read-pkg-up": "2.0.0",
+        "write-pkg": "3.2.0"
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@@ -1500,10 +1500,10 @@
           "integrity": "sha1-eUfkIUmvgNaWy/eXvKq8/h/inKg=",
           "dev": true,
           "requires": {
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-            "parse-json": "^2.2.0",
-            "pify": "^2.0.0",
-            "strip-bom": "^3.0.0"
+            "graceful-fs": "4.1.11",
+            "parse-json": "2.2.0",
+            "pify": "2.3.0",
+            "strip-bom": "3.0.0"
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@@ -1512,7 +1512,7 @@
           "integrity": "sha1-9ID0BDTvgHQfhGkJn43qGPVaTck=",
           "dev": true,
           "requires": {
-            "error-ex": "^1.2.0"
+            "error-ex": "1.3.2"
           }
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@@ -1521,7 +1521,7 @@
           "integrity": "sha1-8BLMuEFbcJb8LaoQVMPXI4lZTHM=",
           "dev": true,
           "requires": {
-            "pify": "^2.0.0"
+            "pify": "2.3.0"
           }
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@@ -1536,9 +1536,9 @@
           "integrity": "sha1-jvHAYjxqbbDcZxPEv6xGMysjaPg=",
           "dev": true,
           "requires": {
-            "load-json-file": "^2.0.0",
-            "normalize-package-data": "^2.3.2",
-            "path-type": "^2.0.0"
+            "load-json-file": "2.0.0",
+            "normalize-package-data": "2.4.0",
+            "path-type": "2.0.0"
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         "read-pkg-up": {
@@ -1547,8 +1547,8 @@
           "integrity": "sha1-a3KoBImE4MQeeVEP1en6mbO1Sb4=",
           "dev": true,
           "requires": {
-            "find-up": "^2.0.0",
-            "read-pkg": "^2.0.0"
+            "find-up": "2.1.0",
+            "read-pkg": "2.0.0"
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@@ -1571,9 +1571,9 @@
       "integrity": "sha1-Y/1D99weO7fONZR9uP42mj9Yx0s=",
       "dev": true,
       "requires": {
-        "chalk": "^1.1.3",
-        "esutils": "^2.0.2",
-        "js-tokens": "^3.0.2"
+        "chalk": "1.1.3",
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@@ -1876,7 +1876,7 @@
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@@ -1885,9 +1885,9 @@
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@@ -1908,12 +1908,12 @@
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@@ -1922,7 +1922,7 @@
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@@ -1931,9 +1931,9 @@
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@@ -1942,9 +1942,9 @@
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-        "regexpu-core": "^2.0.0"
+        "babel-helper-regex": "6.26.0",
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@@ -1953,9 +1953,9 @@
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-            "regjsgen": "^0.2.0",
-            "regjsparser": "^0.1.4"
+            "regenerate": "1.4.0",
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@@ -1970,7 +1970,7 @@
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@@ -1981,9 +1981,9 @@
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@@ -1992,8 +1992,8 @@
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@@ -2002,13 +2002,13 @@
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-        "lodash": "^4.17.4",
-        "mkdirp": "^0.5.1",
-        "source-map-support": "^0.4.15"
+        "babel-core": "6.26.3",
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+        "home-or-tmp": "2.0.0",
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@@ -2028,8 +2028,8 @@
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+        "core-js": "2.5.7",
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@@ -2038,11 +2038,11 @@
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-        "babylon": "^6.18.0",
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@@ -2051,15 +2051,15 @@
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-        "invariant": "^2.2.2",
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@@ -2085,10 +2085,10 @@
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+        "babel-runtime": "6.26.0",
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-        "pascalcase": "^0.1.1"
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@@ -2123,7 +2123,7 @@
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@@ -2132,7 +2132,7 @@
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+        "nan": "2.11.0",
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@@ -4292,8 +4292,7 @@
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@@ -4307,23 +4306,21 @@
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+            "delegates": "1.0.0",
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@@ -4390,7 +4384,7 @@
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@@ -4405,14 +4399,14 @@
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@@ -4421,12 +4415,12 @@
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-            "once": "^1.3.0",
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+            "fs.realpath": "1.0.0",
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@@ -4441,7 +4435,7 @@
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@@ -4450,7 +4444,7 @@
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@@ -4459,15 +4453,14 @@
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@@ -4479,9 +4472,8 @@
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+            "safe-buffer": "5.1.1",
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@@ -4521,14 +4510,13 @@
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-            "rc": "^1.1.7",
-            "rimraf": "^2.6.1",
-            "semver": "^5.3.0",
-            "tar": "^4"
+            "detect-libc": "1.0.3",
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@@ -7049,11 +7030,11 @@
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-            "rimraf": "^2.6.2",
-            "source-map": "^0.6.1"
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@@ -7068,7 +7049,7 @@
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-            "handlebars": "^4.0.11"
+            "handlebars": "4.0.11"
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@@ -7081,7 +7062,7 @@
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@@ -7095,7 +7076,7 @@
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           "dev": true,
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-            "invert-kv": "^1.0.0"
+            "invert-kv": "1.0.0"
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@@ -7103,10 +7084,10 @@
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-            "parse-json": "^4.0.0",
-            "pify": "^3.0.0",
-            "strip-bom": "^3.0.0"
+            "graceful-fs": "4.1.11",
+            "parse-json": "4.0.0",
+            "pify": "3.0.0",
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@@ -7114,8 +7095,8 @@
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           "dev": true,
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-            "path-exists": "^3.0.0"
+            "p-locate": "3.0.0",
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@@ -7133,8 +7114,8 @@
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           "requires": {
-            "pseudomap": "^1.0.2",
-            "yallist": "^2.1.2"
+            "pseudomap": "1.0.2",
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@@ -7142,7 +7123,7 @@
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@@ -7150,7 +7131,7 @@
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+            "md5-o-matic": "0.1.1"
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@@ -7163,7 +7144,7 @@
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+            "mimic-fn": "1.2.0"
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@@ -7171,7 +7152,7 @@
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           "dev": true,
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+            "source-map": "0.6.1"
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@@ -7191,7 +7172,7 @@
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+            "brace-expansion": "1.1.11"
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@@ -7224,10 +7205,10 @@
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-            "is-builtin-module": "^1.0.0",
-            "semver": "2 || 3 || 4 || 5",
-            "validate-npm-package-license": "^3.0.1"
+            "hosted-git-info": "2.7.1",
+            "is-builtin-module": "1.0.0",
+            "semver": "5.5.0",
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@@ -7235,7 +7216,7 @@
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@@ -7248,7 +7229,7 @@
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+            "wrappy": "1.0.2"
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@@ -7256,8 +7237,8 @@
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-            "minimist": "~0.0.1",
-            "wordwrap": "~0.0.2"
+            "minimist": "0.0.10",
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@@ -7270,9 +7251,9 @@
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-            "lcid": "^1.0.0",
-            "mem": "^1.1.0"
+            "execa": "0.7.0",
+            "lcid": "1.0.0",
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@@ -7285,7 +7266,7 @@
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+            "p-try": "2.0.0"
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@@ -7293,7 +7274,7 @@
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+            "p-limit": "2.0.0"
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@@ -7306,10 +7287,10 @@
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-            "lodash.flattendeep": "^4.4.0",
-            "md5-hex": "^2.0.0",
-            "release-zalgo": "^1.0.0"
+            "graceful-fs": "4.1.11",
+            "lodash.flattendeep": "4.4.0",
+            "md5-hex": "2.0.0",
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@@ -7317,8 +7298,8 @@
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-            "json-parse-better-errors": "^1.0.1"
+            "error-ex": "1.3.2",
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@@ -7341,7 +7322,7 @@
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+            "pify": "3.0.0"
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@@ -7354,7 +7335,7 @@
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           "dev": true,
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+            "find-up": "3.0.0"
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@@ -7367,9 +7348,9 @@
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-            "normalize-package-data": "^2.3.2",
-            "path-type": "^3.0.0"
+            "load-json-file": "4.0.0",
+            "normalize-package-data": "2.4.0",
+            "path-type": "3.0.0"
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@@ -7377,8 +7358,8 @@
           "bundled": true,
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           "requires": {
-            "find-up": "^3.0.0",
-            "read-pkg": "^3.0.0"
+            "find-up": "3.0.0",
+            "read-pkg": "3.0.0"
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@@ -7386,7 +7367,7 @@
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+            "es6-error": "4.1.1"
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@@ -7415,7 +7396,7 @@
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+            "align-text": "0.1.4"
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@@ -7423,7 +7404,7 @@
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+            "glob": "7.1.2"
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@@ -7441,7 +7422,7 @@
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-            "shebang-regex": "^1.0.0"
+            "shebang-regex": "1.0.0"
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@@ -7465,12 +7446,12 @@
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-            "os-homedir": "^1.0.1",
-            "rimraf": "^2.6.2",
-            "signal-exit": "^3.0.2",
-            "which": "^1.3.0"
+            "foreground-child": "1.5.6",
+            "mkdirp": "0.5.1",
+            "os-homedir": "1.0.2",
+            "rimraf": "2.6.2",
+            "signal-exit": "3.0.2",
+            "which": "1.3.1"
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@@ -7478,8 +7459,8 @@
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           "dev": true,
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-            "spdx-expression-parse": "^3.0.0",
-            "spdx-license-ids": "^3.0.0"
+            "spdx-expression-parse": "3.0.0",
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@@ -7492,8 +7473,8 @@
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-            "spdx-exceptions": "^2.1.0",
-            "spdx-license-ids": "^3.0.0"
+            "spdx-exceptions": "2.1.0",
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@@ -7506,8 +7487,8 @@
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-            "strip-ansi": "^4.0.0"
+            "is-fullwidth-code-point": "2.0.0",
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@@ -7515,7 +7496,7 @@
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           "dev": true,
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-            "ansi-regex": "^3.0.0"
+            "ansi-regex": "3.0.0"
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@@ -7533,7 +7514,7 @@
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           "dev": true,
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-            "has-flag": "^3.0.0"
+            "has-flag": "3.0.0"
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@@ -7541,10 +7522,10 @@
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-            "minimatch": "^3.0.4",
-            "read-pkg-up": "^4.0.0",
-            "require-main-filename": "^1.0.1"
+            "arrify": "1.0.1",
+            "minimatch": "3.0.4",
+            "read-pkg-up": "4.0.0",
+            "require-main-filename": "1.0.1"
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@@ -7553,9 +7534,9 @@
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-            "source-map": "~0.5.1",
-            "uglify-to-browserify": "~1.0.0",
-            "yargs": "~3.10.0"
+            "source-map": "0.5.7",
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@@ -7564,9 +7545,9 @@
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-                "camelcase": "^1.0.2",
-                "cliui": "^2.1.0",
-                "decamelize": "^1.0.0",
+                "camelcase": "1.2.1",
+                "cliui": "2.1.0",
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@@ -7588,8 +7569,8 @@
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-            "spdx-correct": "^3.0.0",
-            "spdx-expression-parse": "^3.0.0"
+            "spdx-correct": "3.0.0",
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@@ -7597,7 +7578,7 @@
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-            "isexe": "^2.0.0"
+            "isexe": "2.0.0"
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@@ -7621,8 +7602,8 @@
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-            "string-width": "^1.0.1",
-            "strip-ansi": "^3.0.1"
+            "string-width": "1.0.2",
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@@ -7635,7 +7616,7 @@
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-                "number-is-nan": "^1.0.0"
+                "number-is-nan": "1.0.1"
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@@ -7643,9 +7624,9 @@
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-                "code-point-at": "^1.0.0",
-                "is-fullwidth-code-point": "^1.0.0",
-                "strip-ansi": "^3.0.0"
+                "code-point-at": "1.1.0",
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@@ -7653,7 +7634,7 @@
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               "dev": true,
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-                "ansi-regex": "^2.0.0"
+                "ansi-regex": "2.1.1"
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@@ -7668,9 +7649,9 @@
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-            "graceful-fs": "^4.1.11",
-            "imurmurhash": "^0.1.4",
-            "signal-exit": "^3.0.2"
+            "graceful-fs": "4.1.11",
+            "imurmurhash": "0.1.4",
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@@ -7688,18 +7669,18 @@
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-            "which-module": "^2.0.0",
-            "y18n": "^3.2.1",
-            "yargs-parser": "^9.0.2"
+            "cliui": "4.1.0",
+            "decamelize": "1.2.0",
+            "find-up": "2.1.0",
+            "get-caller-file": "1.0.3",
+            "os-locale": "2.1.0",
+            "require-directory": "2.1.1",
+            "require-main-filename": "1.0.1",
+            "set-blocking": "2.0.0",
+            "string-width": "2.1.1",
+            "which-module": "2.0.0",
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@@ -7707,9 +7688,9 @@
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-                "string-width": "^2.1.1",
-                "strip-ansi": "^4.0.0",
-                "wrap-ansi": "^2.0.0"
+                "string-width": "2.1.1",
+                "strip-ansi": "4.0.0",
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@@ -7717,7 +7698,7 @@
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               "dev": true,
               "requires": {
-                "locate-path": "^2.0.0"
+                "locate-path": "2.0.0"
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@@ -7725,8 +7706,8 @@
               "bundled": true,
               "dev": true,
               "requires": {
-                "p-locate": "^2.0.0",
-                "path-exists": "^3.0.0"
+                "p-locate": "2.0.0",
+                "path-exists": "3.0.0"
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@@ -7734,7 +7715,7 @@
               "bundled": true,
               "dev": true,
               "requires": {
-                "p-try": "^1.0.0"
+                "p-try": "1.0.0"
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@@ -7742,7 +7723,7 @@
               "bundled": true,
               "dev": true,
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-                "p-limit": "^1.1.0"
+                "p-limit": "1.3.0"
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@@ -7757,7 +7738,7 @@
           "bundled": true,
           "dev": true,
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-            "camelcase": "^4.1.0"
+            "camelcase": "4.1.0"
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@@ -7793,9 +7774,9 @@
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       "dev": true,
       "requires": {
-        "copy-descriptor": "^0.1.0",
-        "define-property": "^0.2.5",
-        "kind-of": "^3.0.3"
+        "copy-descriptor": "0.1.1",
+        "define-property": "0.2.5",
+        "kind-of": "3.2.2"
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@@ -7804,7 +7785,7 @@
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           "dev": true,
           "requires": {
-            "is-descriptor": "^0.1.0"
+            "is-descriptor": "0.1.6"
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@@ -7815,7 +7796,7 @@
       "integrity": "sha1-95xEk68MU3e1n+OdOV5BBC3QRbs=",
       "dev": true,
       "requires": {
-        "isobject": "^3.0.0"
+        "isobject": "3.0.1"
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@@ -7824,8 +7805,8 @@
       "integrity": "sha1-Gpx0SCnznbuFjHbKNXmuKlTr0fo=",
       "dev": true,
       "requires": {
-        "for-own": "^0.1.4",
-        "is-extendable": "^0.1.1"
+        "for-own": "0.1.5",
+        "is-extendable": "0.1.1"
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@@ -7834,7 +7815,7 @@
       "integrity": "sha1-h6EKxMFpS9Lhy/U1kaZhQftd10c=",
       "dev": true,
       "requires": {
-        "isobject": "^3.0.1"
+        "isobject": "3.0.1"
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     "observable-to-promise": {
@@ -7843,8 +7824,8 @@
       "integrity": "sha1-yCjw8NxH6fhq+KSXfF1VB2znqR8=",
       "dev": true,
       "requires": {
-        "is-observable": "^0.2.0",
-        "symbol-observable": "^1.0.4"
+        "is-observable": "0.2.0",
+        "symbol-observable": "1.2.0"
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@@ -7853,7 +7834,7 @@
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           "dev": true,
           "requires": {
-            "symbol-observable": "^0.2.2"
+            "symbol-observable": "0.2.4"
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@@ -7877,7 +7858,7 @@
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       "integrity": "sha1-WDsap3WWHUsROsF9nFC6753Xa9E=",
       "requires": {
-        "wrappy": "1"
+        "wrappy": "1.0.2"
       }
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     "onetime": {
@@ -7885,7 +7866,7 @@
       "resolved": "https://registry.npmjs.org/onetime/-/onetime-2.0.1.tgz",
       "integrity": "sha1-BnQoIw/WdEOyeUsiu6UotoZ5YtQ=",
       "requires": {
-        "mimic-fn": "^1.0.0"
+        "mimic-fn": "1.2.0"
       }
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@@ -7894,9 +7875,9 @@
       "integrity": "sha1-dcoj8LdNSz9V7guKTg9cIyXrd18=",
       "dev": true,
       "requires": {
-        "env-editor": "^0.3.1",
-        "line-column-path": "^1.0.0",
-        "opn": "^5.0.0"
+        "env-editor": "0.3.1",
+        "line-column-path": "1.0.0",
+        "opn": "5.3.0"
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@@ -7905,7 +7886,7 @@
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       "dev": true,
       "requires": {
-        "is-wsl": "^1.1.0"
+        "is-wsl": "1.1.0"
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-        "slash": "^2.0.0",
-        "update-notifier": "^2.3.0",
-        "xo-init": "^0.7.0"
+        "arrify": "1.0.1",
+        "debug": "3.1.0",
+        "eslint": "5.4.0",
+        "eslint-config-prettier": "2.10.0",
+        "eslint-config-xo": "0.24.2",
+        "eslint-formatter-pretty": "1.3.0",
+        "eslint-plugin-ava": "5.1.0",
+        "eslint-plugin-import": "2.14.0",
+        "eslint-plugin-no-use-extend-native": "0.3.12",
+        "eslint-plugin-node": "7.0.1",
+        "eslint-plugin-prettier": "2.6.2",
+        "eslint-plugin-promise": "3.8.0",
+        "eslint-plugin-unicorn": "5.0.0",
+        "get-stdin": "6.0.0",
+        "globby": "8.0.1",
+        "has-flag": "3.0.0",
+        "lodash.isequal": "4.5.0",
+        "lodash.mergewith": "4.6.1",
+        "meow": "5.0.0",
+        "multimatch": "2.1.0",
+        "open-editor": "1.2.0",
+        "path-exists": "3.0.0",
+        "pkg-conf": "2.1.0",
+        "prettier": "1.14.2",
+        "resolve-cwd": "2.0.0",
+        "resolve-from": "4.0.0",
+        "semver": "5.5.1",
+        "slash": "2.0.0",
+        "update-notifier": "2.5.0",
+        "xo-init": "0.7.0"
       }
     },
     "xo-init": {
@@ -9955,14 +9936,14 @@
       "integrity": "sha512-mrrCKMu52vz0u2tiOl8DoG709pBtnSp58bb4/j58a4jeXjrb1gV7dxfOBjOlXitYtfW2QnlxxxfAojoFcpynDg==",
       "dev": true,
       "requires": {
-        "arrify": "^1.0.0",
-        "execa": "^0.9.0",
-        "has-yarn": "^1.0.0",
-        "minimist": "^1.1.3",
-        "path-exists": "^3.0.0",
-        "read-pkg-up": "^3.0.0",
-        "the-argv": "^1.0.0",
-        "write-pkg": "^3.1.0"
+        "arrify": "1.0.1",
+        "execa": "0.9.0",
+        "has-yarn": "1.0.0",
+        "minimist": "1.2.0",
+        "path-exists": "3.0.0",
+        "read-pkg-up": "3.0.0",
+        "the-argv": "1.0.0",
+        "write-pkg": "3.2.0"
       },
       "dependencies": {
         "cross-spawn": {
@@ -9971,9 +9952,9 @@
           "integrity": "sha1-6L0O/uWPz/b4+UUQoKVUu/ojVEk=",
           "dev": true,
           "requires": {
-            "lru-cache": "^4.0.1",
-            "shebang-command": "^1.2.0",
-            "which": "^1.2.9"
+            "lru-cache": "4.1.3",
+            "shebang-command": "1.2.0",
+            "which": "1.3.1"
           }
         },
         "execa": {
@@ -9982,13 +9963,13 @@
           "integrity": "sha512-BbUMBiX4hqiHZUA5+JujIjNb6TyAlp2D5KLheMjMluwOuzcnylDL4AxZYLLn1n2AGB49eSWwyKvvEQoRpnAtmA==",
           "dev": true,
           "requires": {
-            "cross-spawn": "^5.0.1",
-            "get-stream": "^3.0.0",
-            "is-stream": "^1.1.0",
-            "npm-run-path": "^2.0.0",
-            "p-finally": "^1.0.0",
-            "signal-exit": "^3.0.0",
-            "strip-eof": "^1.0.0"
+            "cross-spawn": "5.1.0",
+            "get-stream": "3.0.0",
+            "is-stream": "1.1.0",
+            "npm-run-path": "2.0.2",
+            "p-finally": "1.0.0",
+            "signal-exit": "3.0.2",
+            "strip-eof": "1.0.0"
           }
         },
         "get-stream": {
@@ -10015,7 +9996,7 @@
       "resolved": "https://registry.npmjs.org/yargs-parser/-/yargs-parser-10.1.0.tgz",
       "integrity": "sha512-VCIyR1wJoEBZUqk5PA+oOBF6ypbwh5aNB3I50guxAL/quggdfs4TtNHQrSazFA3fYZ+tEqfs0zIGlv0c/rgjbQ==",
       "requires": {
-        "camelcase": "^4.1.0"
+        "camelcase": "4.1.0"
       },
       "dependencies": {
         "camelcase": {
diff --git a/package.json b/package.json
index 0310ca9..7f24c32 100644
--- a/package.json
+++ b/package.json
@@ -1,7 +1,7 @@
 {
   "name": "lyo",
   "description": "Node.js to browser. The easy way",
-  "version": "0.3.0",
+  "version": "0.4.0",
   "author": "Boris K",
   "bin": {
     "lyo": "bin/cli.js"
@@ -16,6 +16,7 @@
     "detect-indent": "^5.0.0",
     "edit-json-file": "^1.1.0",
     "get-stream": "^4.0.0",
+    "indent-string": "^3.2.0",
     "meow": "^5.0.0",
     "mkdirp": "^0.5.1",
     "ora": "^3.0.0",
@@ -51,7 +52,8 @@
   "repository": "bokub/lyo",
   "scripts": {
     "coverage": "nyc report --reporter=text-lcov > coverage.lcov && codecov",
-    "example": "node ./bin/cli.js -i example/example.js -o example/example.min.js -n example -u",
+    "example": "node ./bin/cli.js -i example/example.js -o example/example.min.js -n example",
+    "usage": "node ./bin/cli.js usage -i example/example.js -o example/example.min.js -n example",
     "test": "xo && nyc ava -v"
   },
   "xo": {
diff --git a/test/usage.js b/test/usage.js
new file mode 100644
index 0000000..4046532
--- /dev/null
+++ b/test/usage.js
@@ -0,0 +1,34 @@
+import test from 'ava';
+
+const tempWrite = require('temp-write');
+const usage = require('../lib/usage');
+
+const {info} = console;
+
+test.before(() => {
+	console.info = () => {};
+});
+test.after(() => {
+	console.info = info;
+});
+
+test('getUsage does not throw any error', t => {
+	const file = tempWrite.sync(`module.exports = input => input + '!'`, 'test.js');
+	t.notThrows(() => {
+		usage.getUsage({input: file});
+	});
+});
+
+test('getModuleSignature works for functions', t => {
+	const fileA = tempWrite.sync(`module.exports = (a, b) => a + b;`, 'a.js');
+	const fileB = tempWrite.sync(`module.exports = () => console.log('Hi');`, 'b.js');
+	t.is(usage.getModuleSignature({input: fileA, name: 'concat'}), 'concat(foo, bar);');
+	t.is(usage.getModuleSignature({input: fileB, name: 'sayHi'}), 'sayHi();');
+});
+
+test('getModuleSignature works for objects', t => {
+	const code = `module.exports = { concat: (a, b) => a + b, sayHi: function() {console.log('Hi')} };`;
+	const file = tempWrite.sync(code, 'test.js');
+	t.is(usage.getModuleSignature({input: file, name: 'module'}), 'module.concat(foo, bar);\nmodule.sayHi();');
+});
+