From 953c2967f212ef73211bddd090a77fc027bc836d Mon Sep 17 00:00:00 2001
From: Efthymis Sarmpanis <e.sarbanis@gmail.com>
Date: Mon, 20 Nov 2017 12:16:34 +0200
Subject: [PATCH] Basic support for style and script preprocessors

Suggestion for #181 and #876
---
 package.json                                  |   5 +
 src/index.ts                                  |  80 ++-
 src/interfaces.ts                             |  13 +-
 test/preprocess/index.js                      | 169 ++++++
 .../use-coffeescript-preprocessor/_config.js  |  19 +
 .../expected.html                             |   1 +
 .../use-coffeescript-preprocessor/input.html  |   8 +
 .../samples/use-pug-preprocessor/_config.js   |  15 +
 .../samples/use-pug-preprocessor/expected.css |   1 +
 .../samples/use-pug-preprocessor/input.pug    |  10 +
 .../_config.js                                |  26 +
 .../_variables.scss                           |   2 +
 .../expected.css                              |   1 +
 .../input.html                                |  13 +
 .../samples/use-scss-preprocessor/_config.js  |  26 +
 .../use-scss-preprocessor/expected.css        |   1 +
 .../samples/use-scss-preprocessor/input.html  |  14 +
 .../_config.js                                |  24 +
 .../expected.css                              |   1 +
 .../input.html                                |  12 +
 .../variables.styl                            |   2 +
 .../use-stylus-preprocessor/_config.js        |  20 +
 .../use-stylus-preprocessor/expected.css      |   1 +
 .../use-stylus-preprocessor/input.html        |  13 +
 yarn.lock                                     | 540 ++++++++++++++++--
 25 files changed, 970 insertions(+), 47 deletions(-)
 create mode 100644 test/preprocess/index.js
 create mode 100644 test/preprocess/samples/use-coffeescript-preprocessor/_config.js
 create mode 100644 test/preprocess/samples/use-coffeescript-preprocessor/expected.html
 create mode 100644 test/preprocess/samples/use-coffeescript-preprocessor/input.html
 create mode 100644 test/preprocess/samples/use-pug-preprocessor/_config.js
 create mode 100644 test/preprocess/samples/use-pug-preprocessor/expected.css
 create mode 100644 test/preprocess/samples/use-pug-preprocessor/input.pug
 create mode 100644 test/preprocess/samples/use-scss-preprocessor-with-external-files/_config.js
 create mode 100644 test/preprocess/samples/use-scss-preprocessor-with-external-files/_variables.scss
 create mode 100644 test/preprocess/samples/use-scss-preprocessor-with-external-files/expected.css
 create mode 100644 test/preprocess/samples/use-scss-preprocessor-with-external-files/input.html
 create mode 100644 test/preprocess/samples/use-scss-preprocessor/_config.js
 create mode 100644 test/preprocess/samples/use-scss-preprocessor/expected.css
 create mode 100644 test/preprocess/samples/use-scss-preprocessor/input.html
 create mode 100644 test/preprocess/samples/use-stylus-preprocessor-with-external-file/_config.js
 create mode 100644 test/preprocess/samples/use-stylus-preprocessor-with-external-file/expected.css
 create mode 100644 test/preprocess/samples/use-stylus-preprocessor-with-external-file/input.html
 create mode 100644 test/preprocess/samples/use-stylus-preprocessor-with-external-file/variables.styl
 create mode 100644 test/preprocess/samples/use-stylus-preprocessor/_config.js
 create mode 100644 test/preprocess/samples/use-stylus-preprocessor/expected.css
 create mode 100644 test/preprocess/samples/use-stylus-preprocessor/input.html

diff --git a/package.json b/package.json
index 6684fdbd4dae..6e3f0f9304d2 100644
--- a/package.json
+++ b/package.json
@@ -47,6 +47,7 @@
     "acorn": "^5.1.1",
     "chalk": "^2.0.1",
     "codecov": "^2.2.0",
+    "coffeescript": "^2.0.2",
     "console-group": "^0.3.2",
     "css-tree": "1.0.0-alpha22",
     "eslint": "^4.3.0",
@@ -55,13 +56,16 @@
     "estree-walker": "^0.5.1",
     "glob": "^7.1.1",
     "jsdom": "^11.1.0",
+    "less": "^2.7.3",
     "locate-character": "^2.0.0",
     "magic-string": "^0.22.3",
     "mocha": "^3.2.0",
     "nightmare": "^2.10.0",
     "node-resolve": "^1.3.3",
+    "node-sass": "^4.7.1",
     "nyc": "^11.1.0",
     "prettier": "^1.7.0",
+    "pug": "^2.0.0-rc.4",
     "reify": "^0.12.3",
     "rollup": "^0.48.2",
     "rollup-plugin-buble": "^0.15.0",
@@ -74,6 +78,7 @@
     "rollup-watch": "^4.3.1",
     "source-map": "^0.5.6",
     "source-map-support": "^0.4.8",
+    "stylus": "^0.54.5",
     "ts-node": "^3.3.0",
     "tslib": "^1.8.0",
     "typescript": "^2.6.1"
diff --git a/src/index.ts b/src/index.ts
index 529be61618ec..a6b1ccc32e46 100644
--- a/src/index.ts
+++ b/src/index.ts
@@ -4,12 +4,13 @@ import generate from './generators/dom/index';
 import generateSSR from './generators/server-side-rendering/index';
 import { assign } from './shared/index.js';
 import Stylesheet from './css/Stylesheet';
-import { Parsed, CompileOptions, Warning } from './interfaces';
+import { Parsed, CompileOptions, Warning, PreprocessOptions, Preprocessor } from './interfaces';
+import { SourceMap } from 'magic-string';
 
 const version = '__VERSION__';
 
 function normalizeOptions(options: CompileOptions): CompileOptions {
-	let normalizedOptions = assign({ generate: 'dom' }, options);
+	let normalizedOptions = assign({ generate: 'dom', preprocessor: false }, options);
 	const { onwarn, onerror } = normalizedOptions;
 	normalizedOptions.onwarn = onwarn
 		? (warning: Warning) => onwarn(warning, defaultOnwarn)
@@ -34,9 +35,78 @@ function defaultOnerror(error: Error) {
 	throw error;
 }
 
+function _parseAttributeValue(value: string | boolean) {
+	const curated = (<string>value).replace(/"/ig, '');
+	if (curated === 'true' || curated === 'false') {
+		return curated === 'true';
+	}
+	return curated;
+}
+
+function _parseStyleAttributes(str: string) {
+	const attrs = {};
+	str.split(/\s+/).filter(Boolean).forEach(attr => {
+		const [name, value] = attr.split('=');
+		attrs[name] = _parseAttributeValue(value);
+	});
+	return attrs;
+}
+
+async function _doPreprocess(source, type: 'script' | 'style', preprocessor: Preprocessor) {
+	const exp = new RegExp(`<${type}([\\S\\s]*?)>([\\S\\s]*?)<\\/${type}>`, 'ig');
+	const match = exp.exec(source);
+	if (match) {
+		const attributes: Record<string, string | boolean> = _parseStyleAttributes(match[1]);
+		const content: string = match[2];
+		const processed: { code: string, map?: SourceMap | string } = await preprocessor({
+			content,
+			attributes
+		});
+		return source.replace(content, processed.code || content);
+	}
+}
+
+export async function preprocess(source: string, options: PreprocessOptions) {
+	const { markup, style, script } = options;
+	if (!!markup) {
+		try {
+			const processed: { code: string, map?: SourceMap | string } = await markup({ content: source });
+			source = processed.code;
+		} catch (error) {
+			defaultOnerror(error);
+		}
+	}
+
+	if (!!style) {
+		try {
+			source = await _doPreprocess(source, 'style', style);
+		} catch (error) {
+			defaultOnerror(error);
+		}
+	}
+
+	if (!!script) {
+		try {
+			source = await _doPreprocess(source, 'script', script);
+		} catch (error) {
+			defaultOnerror(error);
+		}
+	}
+
+	return {
+		// TODO return separated output, in future version where svelte.compile supports it:
+		// style: { code: styleCode, map: styleMap },
+		// script { code: scriptCode, map: scriptMap },
+		// markup { code: markupCode, map: markupMap },
+
+		toString() {
+			return source;
+		}
+	};
+}
+
 export function compile(source: string, _options: CompileOptions) {
 	const options = normalizeOptions(_options);
-
 	let parsed: Parsed;
 
 	try {
@@ -53,7 +123,7 @@ export function compile(source: string, _options: CompileOptions) {
 	const compiler = options.generate === 'ssr' ? generateSSR : generate;
 
 	return compiler(parsed, source, stylesheet, options);
-}
+};
 
 export function create(source: string, _options: CompileOptions = {}) {
 	_options.format = 'eval';
@@ -65,7 +135,7 @@ export function create(source: string, _options: CompileOptions = {}) {
 	}
 
 	try {
-		return (0,eval)(compiled.code);
+		return (0, eval)(compiled.code);
 	} catch (err) {
 		if (_options.onerror) {
 			_options.onerror(err);
diff --git a/src/interfaces.ts b/src/interfaces.ts
index 3a9280df3cf1..bcfb24f5682f 100644
--- a/src/interfaces.ts
+++ b/src/interfaces.ts
@@ -1,3 +1,5 @@
+import {SourceMap} from 'magic-string';
+
 export interface Node {
 	start: number;
 	end: number;
@@ -60,6 +62,7 @@ export interface CompileOptions {
 
 	onerror?: (error: Error) => void;
 	onwarn?: (warning: Warning) => void;
+	preprocessor?: ((raw: string) => string) | false ;
 }
 
 export interface GenerateOptions {
@@ -78,4 +81,12 @@ export interface Visitor {
 export interface CustomElementOptions {
 	tag?: string;
 	props?: string[];
-}
\ No newline at end of file
+}
+
+export interface PreprocessOptions {
+	markup?: (options: {content: string}) => { code: string, map?: SourceMap | string };
+	style?: Preprocessor;
+	script?: Preprocessor;
+}
+
+export type Preprocessor = (options: {content: string, attributes: Record<string, string | boolean>}) => { code: string, map?: SourceMap | string };
diff --git a/test/preprocess/index.js b/test/preprocess/index.js
new file mode 100644
index 000000000000..209e81070b12
--- /dev/null
+++ b/test/preprocess/index.js
@@ -0,0 +1,169 @@
+import assert from 'assert';
+import * as fs from 'fs';
+import {parse} from 'acorn';
+import {addLineNumbers, env, normalizeHtml, svelte} from '../helpers.js';
+
+function tryRequire(file) {
+	try {
+		const mod = require(file);
+		return mod.default || mod;
+	} catch (err) {
+		if (err.code !== 'MODULE_NOT_FOUND') throw err;
+		return null;
+	}
+}
+
+function normalizeWarning(warning) {
+	warning.frame = warning.frame.replace(/^\n/, '').
+		replace(/^\t+/gm, '').
+		replace(/\s+$/gm, '');
+	delete warning.filename;
+	delete warning.toString;
+	return warning;
+}
+
+function checkCodeIsValid(code) {
+	try {
+		parse(code);
+	} catch (err) {
+		console.error(addLineNumbers(code));
+		throw new Error(err.message);
+	}
+}
+
+describe('preprocess', () => {
+	fs.readdirSync('test/preprocess/samples').forEach(dir => {
+		if (dir[0] === '.') return;
+
+		// add .solo to a sample directory name to only run that test
+		const solo = /\.solo/.test(dir);
+		const skip = /\.skip/.test(dir);
+
+		if (solo && process.env.CI) {
+			throw new Error('Forgot to remove `solo: true` from test');
+		}
+
+		(solo ? it.only : skip ? it.skip : it)(dir, () => {
+			const config = tryRequire(`./samples/${dir}/_config.js`) || {};
+			const input = fs.existsSync(`test/preprocess/samples/${dir}/input.pug`) ?
+				fs.readFileSync(`test/preprocess/samples/${dir}/input.pug`,
+					'utf-8').replace(/\s+$/, '') :
+				fs.readFileSync(`test/preprocess/samples/${dir}/input.html`,
+					'utf-8').replace(/\s+$/, '');
+
+			svelte.preprocess(input, config).
+				then(processed => processed.toString()).
+				then(processed => {
+
+					const expectedWarnings = (config.warnings || []).map(
+						normalizeWarning);
+					const domWarnings = [];
+					const ssrWarnings = [];
+
+					const dom = svelte.compile(
+						processed,
+						Object.assign(config, {
+							format: 'iife',
+							name: 'SvelteComponent',
+							onwarn: warning => {
+								domWarnings.push(warning);
+							},
+						})
+					);
+
+					const ssr = svelte.compile(
+						processed,
+						Object.assign(config, {
+							format: 'iife',
+							generate: 'ssr',
+							name: 'SvelteComponent',
+							onwarn: warning => {
+								ssrWarnings.push(warning);
+							},
+						})
+					);
+
+					// check the code is valid
+					checkCodeIsValid(dom.code);
+					checkCodeIsValid(ssr.code);
+
+					assert.equal(dom.css, ssr.css);
+
+					assert.deepEqual(
+						domWarnings.map(normalizeWarning),
+						ssrWarnings.map(normalizeWarning)
+					);
+					assert.deepEqual(domWarnings.map(normalizeWarning), expectedWarnings);
+
+					const expected = {
+						html: read(`test/preprocess/samples/${dir}/expected.html`),
+						css: read(`test/preprocess/samples/${dir}/expected.css`),
+					};
+
+					if (expected.css !== null) {
+						fs.writeFileSync(`test/preprocess/samples/${dir}/_actual.css`,
+							dom.css);
+						assert.equal(dom.css.replace(/svelte-\d+/g, 'svelte-xyz'),
+							expected.css);
+					}
+
+					// verify that the right elements have scoping selectors
+					if (expected.html !== null) {
+						const window = env();
+
+						// dom
+						try {
+							const Component = eval(
+								`(function () { ${dom.code}; return SvelteComponent; }())`
+							);
+							const target = window.document.querySelector('main');
+
+							new Component({target, data: config.data});
+							const html = target.innerHTML;
+
+							fs.writeFileSync(`test/preprocess/samples/${dir}/_actual.html`,
+								html);
+
+							assert.equal(
+								normalizeHtml(window,
+									html.replace(/svelte-\d+/g, 'svelte-xyz')),
+								normalizeHtml(window, expected.html)
+							);
+						} catch (err) {
+							console.log(dom.code);
+							throw err;
+						}
+
+						// ssr
+						try {
+							const component = eval(
+								`(function () { ${ssr.code}; return SvelteComponent; }())`
+							);
+
+							assert.equal(
+								normalizeHtml(
+									window,
+									component.render(config.data).
+										replace(/svelte-\d+/g, 'svelte-xyz')
+								),
+								normalizeHtml(window, expected.html)
+							);
+						} catch (err) {
+							console.log(ssr.code);
+							throw err;
+						}
+					}
+				}).catch(error => {
+					throw error;
+				});
+		});
+	});
+});
+
+function read(file) {
+	try {
+		return fs.readFileSync(file, 'utf-8');
+	} catch (err) {
+		return null;
+	}
+}
diff --git a/test/preprocess/samples/use-coffeescript-preprocessor/_config.js b/test/preprocess/samples/use-coffeescript-preprocessor/_config.js
new file mode 100644
index 000000000000..1865fe408600
--- /dev/null
+++ b/test/preprocess/samples/use-coffeescript-preprocessor/_config.js
@@ -0,0 +1,19 @@
+import * as CoffeeScript from 'coffeescript';
+
+export default {
+	cascade: false,
+	script: ({content, attributes}) => {
+		if (attributes.type !== 'text/coffeescript') {
+			return {code: content};
+		}
+
+		return new Promise((fulfil, reject) => {
+			try {
+				const code = CoffeeScript.compile(content, {});
+				fulfil({code});
+			} catch (error) {
+				reject(error);
+			}
+		});
+	},
+};
diff --git a/test/preprocess/samples/use-coffeescript-preprocessor/expected.html b/test/preprocess/samples/use-coffeescript-preprocessor/expected.html
new file mode 100644
index 000000000000..2c473ea019ff
--- /dev/null
+++ b/test/preprocess/samples/use-coffeescript-preprocessor/expected.html
@@ -0,0 +1 @@
+<h1>Hello foo!</h1>
diff --git a/test/preprocess/samples/use-coffeescript-preprocessor/input.html b/test/preprocess/samples/use-coffeescript-preprocessor/input.html
new file mode 100644
index 000000000000..50c7f643476c
--- /dev/null
+++ b/test/preprocess/samples/use-coffeescript-preprocessor/input.html
@@ -0,0 +1,8 @@
+<h1>Hello {{name}}!</h1>
+
+<script type="text/coffeescript">
+	export default {
+		data: () ->
+			name: 'foo'
+	};
+</script>
\ No newline at end of file
diff --git a/test/preprocess/samples/use-pug-preprocessor/_config.js b/test/preprocess/samples/use-pug-preprocessor/_config.js
new file mode 100644
index 000000000000..7a345bfd9187
--- /dev/null
+++ b/test/preprocess/samples/use-pug-preprocessor/_config.js
@@ -0,0 +1,15 @@
+import * as pug from 'pug';
+
+export default {
+	cascade: false,
+	markup: ({content}) => {
+		return new Promise((fulfil, reject) => {
+			try {
+				const code = pug.render(content);
+				fulfil({code});
+			} catch (error) {
+				reject(error);
+			}
+		});
+	},
+};
diff --git a/test/preprocess/samples/use-pug-preprocessor/expected.css b/test/preprocess/samples/use-pug-preprocessor/expected.css
new file mode 100644
index 000000000000..2217e804d936
--- /dev/null
+++ b/test/preprocess/samples/use-pug-preprocessor/expected.css
@@ -0,0 +1 @@
+[foo][svelte-xyz]{color:red}[baz][svelte-xyz]{color:blue}
\ No newline at end of file
diff --git a/test/preprocess/samples/use-pug-preprocessor/input.pug b/test/preprocess/samples/use-pug-preprocessor/input.pug
new file mode 100644
index 000000000000..d32e76527d4d
--- /dev/null
+++ b/test/preprocess/samples/use-pug-preprocessor/input.pug
@@ -0,0 +1,10 @@
+div(foo="bar")
+div(baz)
+
+style(type="text/css")
+	|[foo] {
+	|	color: red;
+	|	}
+	|[baz] {
+	|	color: blue;
+	|}
diff --git a/test/preprocess/samples/use-scss-preprocessor-with-external-files/_config.js b/test/preprocess/samples/use-scss-preprocessor-with-external-files/_config.js
new file mode 100644
index 000000000000..6daae7c7a3a6
--- /dev/null
+++ b/test/preprocess/samples/use-scss-preprocessor-with-external-files/_config.js
@@ -0,0 +1,26 @@
+import * as sass from 'node-sass';
+import * as path from 'path';
+
+export default {
+	cascade: false,
+	style: ({ content, attributes }) => {
+		if (attributes.type !== 'text/scss') {
+			return {code: content};
+		}
+
+		return new Promise((fulfil, reject) => {
+			sass.render({
+				data: content,
+				includePaths: [
+					path.resolve(__dirname)
+				]
+			}, (err, result) => {
+				if (err) {
+					reject(err);
+				}	else {
+					fulfil({ code: result.css.toString(), map: result.map });
+				}
+			});
+		});
+	}
+};
diff --git a/test/preprocess/samples/use-scss-preprocessor-with-external-files/_variables.scss b/test/preprocess/samples/use-scss-preprocessor-with-external-files/_variables.scss
new file mode 100644
index 000000000000..be7eddc5a44f
--- /dev/null
+++ b/test/preprocess/samples/use-scss-preprocessor-with-external-files/_variables.scss
@@ -0,0 +1,2 @@
+$foo-color: red;
+$baz-color: blue;
diff --git a/test/preprocess/samples/use-scss-preprocessor-with-external-files/expected.css b/test/preprocess/samples/use-scss-preprocessor-with-external-files/expected.css
new file mode 100644
index 000000000000..2217e804d936
--- /dev/null
+++ b/test/preprocess/samples/use-scss-preprocessor-with-external-files/expected.css
@@ -0,0 +1 @@
+[foo][svelte-xyz]{color:red}[baz][svelte-xyz]{color:blue}
\ No newline at end of file
diff --git a/test/preprocess/samples/use-scss-preprocessor-with-external-files/input.html b/test/preprocess/samples/use-scss-preprocessor-with-external-files/input.html
new file mode 100644
index 000000000000..2db43e1c6f5b
--- /dev/null
+++ b/test/preprocess/samples/use-scss-preprocessor-with-external-files/input.html
@@ -0,0 +1,13 @@
+<div foo='bar'></div>
+<div baz></div>
+
+<style type="text/scss">
+	@import 'variables';
+
+	[foo] {
+		color: $foo-color;
+	}
+	[baz] {
+		color: $baz-color;
+	}
+</style>
diff --git a/test/preprocess/samples/use-scss-preprocessor/_config.js b/test/preprocess/samples/use-scss-preprocessor/_config.js
new file mode 100644
index 000000000000..cb3a1a505a8a
--- /dev/null
+++ b/test/preprocess/samples/use-scss-preprocessor/_config.js
@@ -0,0 +1,26 @@
+import * as sass from 'node-sass';
+
+export default {
+	cascade: false,
+	style: ({ content, attributes }) => {
+		if (attributes.type !== 'text/scss') {
+			return {code: content};
+		}
+
+		if (attributes['aria-hidden'] !== true) {
+			throw new Error('aria-hidden is supposed to be true');
+		}
+
+		return new Promise((fulfil, reject) => {
+			sass.render({
+				data: content,
+			}, (err, result) => {
+				if (err) {
+					reject(err);
+				} else {
+					fulfil({ code: result.css.toString(), map: result.map });
+				}
+			});
+		});
+	}
+};
diff --git a/test/preprocess/samples/use-scss-preprocessor/expected.css b/test/preprocess/samples/use-scss-preprocessor/expected.css
new file mode 100644
index 000000000000..2217e804d936
--- /dev/null
+++ b/test/preprocess/samples/use-scss-preprocessor/expected.css
@@ -0,0 +1 @@
+[foo][svelte-xyz]{color:red}[baz][svelte-xyz]{color:blue}
\ No newline at end of file
diff --git a/test/preprocess/samples/use-scss-preprocessor/input.html b/test/preprocess/samples/use-scss-preprocessor/input.html
new file mode 100644
index 000000000000..4e6384ebdc9c
--- /dev/null
+++ b/test/preprocess/samples/use-scss-preprocessor/input.html
@@ -0,0 +1,14 @@
+<div foo='bar'></div>
+<div baz></div>
+
+<style type="text/scss" aria-hidden="true">
+	$foo-color: red;
+	$baz-color: blue;
+
+	[foo] {
+		color: $foo-color;
+	}
+	[baz] {
+		color: $baz-color;
+	}
+</style>
diff --git a/test/preprocess/samples/use-stylus-preprocessor-with-external-file/_config.js b/test/preprocess/samples/use-stylus-preprocessor-with-external-file/_config.js
new file mode 100644
index 000000000000..3806a407f2da
--- /dev/null
+++ b/test/preprocess/samples/use-stylus-preprocessor-with-external-file/_config.js
@@ -0,0 +1,24 @@
+import * as stylus from 'stylus';
+import * as path from 'path';
+
+export default {
+	preprocessor: (styles) =>
+		stylus(styles).include(path.resolve(__dirname)).render(),
+	cascade: false,
+	style: ({content, attributes}) => {
+		if (attributes.type !== 'text/stylus') {
+			return {code: content};
+		}
+
+		return new Promise((fulfil, reject) => {
+			stylus(content).include(path.resolve(__dirname)).
+				render((err, result) => {
+					if (err) {
+						reject(err);
+					} else {
+						fulfil({code: result});
+					}
+				});
+		});
+	},
+};
diff --git a/test/preprocess/samples/use-stylus-preprocessor-with-external-file/expected.css b/test/preprocess/samples/use-stylus-preprocessor-with-external-file/expected.css
new file mode 100644
index 000000000000..8bfade202445
--- /dev/null
+++ b/test/preprocess/samples/use-stylus-preprocessor-with-external-file/expected.css
@@ -0,0 +1 @@
+[foo][svelte-xyz]{color:#f00}[baz][svelte-xyz]{color:#00f}
\ No newline at end of file
diff --git a/test/preprocess/samples/use-stylus-preprocessor-with-external-file/input.html b/test/preprocess/samples/use-stylus-preprocessor-with-external-file/input.html
new file mode 100644
index 000000000000..2dffa65b3b42
--- /dev/null
+++ b/test/preprocess/samples/use-stylus-preprocessor-with-external-file/input.html
@@ -0,0 +1,12 @@
+<div foo='bar'></div>
+<div baz></div>
+
+<style type="text/stylus">
+	@import 'variables.styl'
+
+	[foo]
+		color foo-color
+	[baz]
+		color baz-color
+
+</style>
diff --git a/test/preprocess/samples/use-stylus-preprocessor-with-external-file/variables.styl b/test/preprocess/samples/use-stylus-preprocessor-with-external-file/variables.styl
new file mode 100644
index 000000000000..d9ff4b92751a
--- /dev/null
+++ b/test/preprocess/samples/use-stylus-preprocessor-with-external-file/variables.styl
@@ -0,0 +1,2 @@
+foo-color = red
+baz-color = blue
diff --git a/test/preprocess/samples/use-stylus-preprocessor/_config.js b/test/preprocess/samples/use-stylus-preprocessor/_config.js
new file mode 100644
index 000000000000..8e92e4ad601f
--- /dev/null
+++ b/test/preprocess/samples/use-stylus-preprocessor/_config.js
@@ -0,0 +1,20 @@
+import * as stylus from 'stylus';
+
+export default {
+	cascade: false,
+	style: ({content, attributes}) => {
+		if (attributes.type !== 'text/stylus') {
+			return {code: content};
+		}
+
+		return new Promise((fulfil, reject) => {
+			stylus(content).render((err, result) => {
+				if (err) {
+					reject(err);
+				} else {
+					fulfil({code: result});
+				}
+			});
+		});
+	},
+};
diff --git a/test/preprocess/samples/use-stylus-preprocessor/expected.css b/test/preprocess/samples/use-stylus-preprocessor/expected.css
new file mode 100644
index 000000000000..8bfade202445
--- /dev/null
+++ b/test/preprocess/samples/use-stylus-preprocessor/expected.css
@@ -0,0 +1 @@
+[foo][svelte-xyz]{color:#f00}[baz][svelte-xyz]{color:#00f}
\ No newline at end of file
diff --git a/test/preprocess/samples/use-stylus-preprocessor/input.html b/test/preprocess/samples/use-stylus-preprocessor/input.html
new file mode 100644
index 000000000000..259c0d45ede9
--- /dev/null
+++ b/test/preprocess/samples/use-stylus-preprocessor/input.html
@@ -0,0 +1,13 @@
+<div foo='bar'></div>
+<div baz></div>
+
+<style type="text/stylus">
+	foo-color = red
+	baz-color = blue
+
+	[foo]
+		color foo-color
+	[baz]
+		color baz-color
+
+</style>
diff --git a/yarn.lock b/yarn.lock
index 4a8c3799e3b7..0e3f324f0c01 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -22,6 +22,12 @@ abbrev@1:
   version "1.1.1"
   resolved "https://registry.yarnpkg.com/abbrev/-/abbrev-1.1.1.tgz#f8f2c887ad10bf67f634f005b6987fed3179aac8"
 
+acorn-globals@^3.0.0:
+  version "3.1.0"
+  resolved "https://registry.yarnpkg.com/acorn-globals/-/acorn-globals-3.1.0.tgz#fd8270f71fbb4996b004fa880ee5d46573a731bf"
+  dependencies:
+    acorn "^4.0.4"
+
 acorn-globals@^4.0.0:
   version "4.1.0"
   resolved "https://registry.yarnpkg.com/acorn-globals/-/acorn-globals-4.1.0.tgz#ab716025dbe17c54d3ef81d32ece2b2d99fe2538"
@@ -40,10 +46,14 @@ acorn-object-spread@^1.0.0:
   dependencies:
     acorn "^3.1.0"
 
-acorn@^3.0.4, acorn@^3.1.0, acorn@^3.3.0:
+acorn@^3.0.4, acorn@^3.1.0, acorn@^3.3.0, acorn@~3.3.0:
   version "3.3.0"
   resolved "https://registry.yarnpkg.com/acorn/-/acorn-3.3.0.tgz#45e37fb39e8da3f25baee3ff5369e2bb5f22017a"
 
+acorn@^4.0.4, acorn@~4.0.2:
+  version "4.0.13"
+  resolved "https://registry.yarnpkg.com/acorn/-/acorn-4.0.13.tgz#105495ae5361d697bd195c825192e1ad7f253787"
+
 acorn@^5.0.0, acorn@^5.1.1, acorn@^5.1.2, acorn@^5.2.1:
   version "5.2.1"
   resolved "https://registry.yarnpkg.com/acorn/-/acorn-5.2.1.tgz#317ac7821826c22c702d66189ab8359675f135d7"
@@ -180,6 +190,10 @@ arrify@^1.0.0, arrify@^1.0.1:
   version "1.0.1"
   resolved "https://registry.yarnpkg.com/arrify/-/arrify-1.0.1.tgz#898508da2226f380df904728456849c1501a4b0d"
 
+asap@~2.0.3:
+  version "2.0.6"
+  resolved "https://registry.yarnpkg.com/asap/-/asap-2.0.6.tgz#e50347611d7e690943208bbdafebcbc2fb866d46"
+
 asn1@~0.2.3:
   version "0.2.3"
   resolved "https://registry.yarnpkg.com/asn1/-/asn1-0.2.3.tgz#dac8787713c9966849fc8180777ebe9c1ddf3b86"
@@ -196,6 +210,10 @@ async-each@^1.0.0:
   version "1.0.1"
   resolved "https://registry.yarnpkg.com/async-each/-/async-each-1.0.1.tgz#19d386a1d9edc6e7c1c85d388aedbcc56d33602d"
 
+async-foreach@^0.1.3:
+  version "0.1.3"
+  resolved "https://registry.yarnpkg.com/async-foreach/-/async-foreach-0.1.3.tgz#36121f845c0578172de419a97dbeb1d16ec34542"
+
 async@^1.4.0:
   version "1.5.2"
   resolved "https://registry.yarnpkg.com/async/-/async-1.5.2.tgz#ec6a61ae56480c0c3cb241c95618e20892f9672a"
@@ -403,6 +421,10 @@ camelcase@^2.0.0:
   version "2.1.1"
   resolved "https://registry.yarnpkg.com/camelcase/-/camelcase-2.1.1.tgz#7c1d16d679a1bbe59ca02cacecfb011e201f5a1f"
 
+camelcase@^3.0.0:
+  version "3.0.0"
+  resolved "https://registry.yarnpkg.com/camelcase/-/camelcase-3.0.0.tgz#32fc4b9fcdaf845fcdf7e73bb97cac2261f0ab0a"
+
 camelcase@^4.1.0:
   version "4.1.0"
   resolved "https://registry.yarnpkg.com/camelcase/-/camelcase-4.1.0.tgz#d545635be1e33c542649c69173e5de6acfae34dd"
@@ -440,6 +462,12 @@ chalk@^2.0.0, chalk@^2.0.1, chalk@^2.1.0:
     escape-string-regexp "^1.0.5"
     supports-color "^4.0.0"
 
+character-parser@^2.1.1:
+  version "2.2.0"
+  resolved "https://registry.yarnpkg.com/character-parser/-/character-parser-2.2.0.tgz#c7ce28f36d4bcd9744e5ffc2c5fcde1c73261fc0"
+  dependencies:
+    is-regex "^1.0.3"
+
 chardet@^0.4.0:
   version "0.4.2"
   resolved "https://registry.yarnpkg.com/chardet/-/chardet-0.4.2.tgz#b5473b33dc97c424e5d98dc87d55d4d8a29c8bf2"
@@ -463,6 +491,13 @@ circular-json@^0.3.1:
   version "0.3.3"
   resolved "https://registry.yarnpkg.com/circular-json/-/circular-json-0.3.3.tgz#815c99ea84f6809529d2f45791bdf82711352d66"
 
+clean-css@^3.3.0:
+  version "3.4.28"
+  resolved "https://registry.yarnpkg.com/clean-css/-/clean-css-3.4.28.tgz#bf1945e82fc808f55695e6ddeaec01400efd03ff"
+  dependencies:
+    commander "2.8.x"
+    source-map "0.4.x"
+
 cli-cursor@^2.1.0:
   version "2.1.0"
   resolved "https://registry.yarnpkg.com/cli-cursor/-/cli-cursor-2.1.0.tgz#b35dac376479facc3e94747d41d0d0f5238ffcb5"
@@ -509,6 +544,10 @@ codecov@^2.2.0:
     request "2.77.0"
     urlgrey "0.4.4"
 
+coffeescript@^2.0.2:
+  version "2.0.3"
+  resolved "https://registry.yarnpkg.com/coffeescript/-/coffeescript-2.0.3.tgz#760f02724f5f0911be7cefa34a8e0e10c5d8512a"
+
 color-convert@^1.9.0:
   version "1.9.1"
   resolved "https://registry.yarnpkg.com/color-convert/-/color-convert-1.9.1.tgz#c1261107aeb2f294ebffec9ed9ecad529a6097ed"
@@ -531,6 +570,12 @@ commander@1.0.4:
   dependencies:
     keypress "0.1.x"
 
+commander@2.8.x:
+  version "2.8.1"
+  resolved "https://registry.yarnpkg.com/commander/-/commander-2.8.1.tgz#06be367febfda0c330aa1e2a072d3dc9762425d4"
+  dependencies:
+    graceful-readlink ">= 1.0.0"
+
 commander@2.9.0:
   version "2.9.0"
   resolved "https://registry.yarnpkg.com/commander/-/commander-2.9.0.tgz#9c99094176e12240cb22d6c5146098400fe0f7d4"
@@ -569,6 +614,13 @@ console-group@^0.3.2:
   version "0.3.3"
   resolved "https://registry.yarnpkg.com/console-group/-/console-group-0.3.3.tgz#6d8eb6b9d6b757a2895284f62d09c7ad43f2bbce"
 
+constantinople@^3.0.1:
+  version "3.1.0"
+  resolved "https://registry.yarnpkg.com/constantinople/-/constantinople-3.1.0.tgz#7569caa8aa3f8d5935d62e1fa96f9f702cd81c79"
+  dependencies:
+    acorn "^3.1.0"
+    is-expression "^2.0.1"
+
 contains-path@^0.1.0:
   version "0.1.0"
   resolved "https://registry.yarnpkg.com/contains-path/-/contains-path-0.1.0.tgz#fe8cf184ff6670b6baef01a9d4861a5cbec4120a"
@@ -589,6 +641,13 @@ core-util-is@1.0.2, core-util-is@~1.0.0:
   version "1.0.2"
   resolved "https://registry.yarnpkg.com/core-util-is/-/core-util-is-1.0.2.tgz#b5fd54220aa2bc5ab57aab7140c940754503c1a7"
 
+cross-spawn@^3.0.0:
+  version "3.0.1"
+  resolved "https://registry.yarnpkg.com/cross-spawn/-/cross-spawn-3.0.1.tgz#1256037ecb9f0c5f79e3d6ef135e30770184b982"
+  dependencies:
+    lru-cache "^4.0.1"
+    which "^1.2.9"
+
 cross-spawn@^4:
   version "4.0.2"
   resolved "https://registry.yarnpkg.com/cross-spawn/-/cross-spawn-4.0.2.tgz#7b9247621c23adfdd3856004a823cbe397424d41"
@@ -616,6 +675,10 @@ cryptiles@3.x.x:
   dependencies:
     boom "5.x.x"
 
+css-parse@1.7.x:
+  version "1.7.0"
+  resolved "https://registry.yarnpkg.com/css-parse/-/css-parse-1.7.0.tgz#321f6cf73782a6ff751111390fc05e2c657d8c9b"
+
 css-tree@1.0.0-alpha22:
   version "1.0.0-alpha22"
   resolved "https://registry.yarnpkg.com/css-tree/-/css-tree-1.0.0-alpha22.tgz#338a006e331c7b4f9dab7b6af539ece56ff78af2"
@@ -649,6 +712,12 @@ debug-log@^1.0.1:
   version "1.0.1"
   resolved "https://registry.yarnpkg.com/debug-log/-/debug-log-1.0.1.tgz#2307632d4c04382b8df8a32f70b895046d52745f"
 
+debug@*, debug@^3.0.1, debug@^3.1.0:
+  version "3.1.0"
+  resolved "https://registry.yarnpkg.com/debug/-/debug-3.1.0.tgz#5bb5a0672628b64149566ba16819e61518c67261"
+  dependencies:
+    ms "2.0.0"
+
 debug@2.6.8:
   version "2.6.8"
   resolved "https://registry.yarnpkg.com/debug/-/debug-2.6.8.tgz#e731531ca2ede27d188222427da17821d68ff4fc"
@@ -661,12 +730,6 @@ debug@2.6.9, debug@^2.1.3, debug@^2.2.0, debug@^2.6.8:
   dependencies:
     ms "2.0.0"
 
-debug@^3.0.1, debug@^3.1.0:
-  version "3.1.0"
-  resolved "https://registry.yarnpkg.com/debug/-/debug-3.1.0.tgz#5bb5a0672628b64149566ba16819e61518c67261"
-  dependencies:
-    ms "2.0.0"
-
 decamelize@^1.0.0, decamelize@^1.1.1, decamelize@^1.1.2:
   version "1.2.0"
   resolved "https://registry.yarnpkg.com/decamelize/-/decamelize-1.2.0.tgz#f6534d15148269b20352e7bee26f501f9a191290"
@@ -748,6 +811,10 @@ doctrine@^2.0.2:
   dependencies:
     esutils "^2.0.2"
 
+doctypes@^1.1.0:
+  version "1.1.0"
+  resolved "https://registry.yarnpkg.com/doctypes/-/doctypes-1.1.0.tgz#ea80b106a87538774e8a3a4a5afe293de489e0a9"
+
 dom-serializer@0:
   version "0.1.0"
   resolved "https://registry.yarnpkg.com/dom-serializer/-/dom-serializer-0.1.0.tgz#073c697546ce0780ce23be4a28e293e40bc30c82"
@@ -818,6 +885,12 @@ entities@^1.1.1, entities@~1.1.1:
   version "1.1.1"
   resolved "https://registry.yarnpkg.com/entities/-/entities-1.1.1.tgz#6e5c2d0a5621b5dadaecef80b90edfb5cd7772f0"
 
+errno@^0.1.1:
+  version "0.1.4"
+  resolved "https://registry.yarnpkg.com/errno/-/errno-0.1.4.tgz#b896e23a9e5e8ba33871fc996abd3635fc9a1c7d"
+  dependencies:
+    prr "~0.0.0"
+
 error-ex@^1.2.0:
   version "1.3.1"
   resolved "https://registry.yarnpkg.com/error-ex/-/error-ex-1.3.1.tgz#f855a86ce61adc4e8621c3cda21e7a7612c3a8dc"
@@ -1206,6 +1279,12 @@ gauge@~2.7.3:
     strip-ansi "^3.0.1"
     wide-align "^1.1.0"
 
+gaze@^1.0.0:
+  version "1.1.2"
+  resolved "https://registry.yarnpkg.com/gaze/-/gaze-1.1.2.tgz#847224677adb8870d679257ed3388fdb61e40105"
+  dependencies:
+    globule "^1.0.0"
+
 generate-function@^2.0.0:
   version "2.0.0"
   resolved "https://registry.yarnpkg.com/generate-function/-/generate-function-2.0.0.tgz#6858fe7c0969b7d4e9093337647ac79f60dfbe74"
@@ -1247,6 +1326,17 @@ glob-parent@^2.0.0:
   dependencies:
     is-glob "^2.0.0"
 
+glob@7.0.x:
+  version "7.0.6"
+  resolved "https://registry.yarnpkg.com/glob/-/glob-7.0.6.tgz#211bafaf49e525b8cd93260d14ab136152b3f57a"
+  dependencies:
+    fs.realpath "^1.0.0"
+    inflight "^1.0.4"
+    inherits "2"
+    minimatch "^3.0.2"
+    once "^1.3.0"
+    path-is-absolute "^1.0.0"
+
 glob@7.1.1:
   version "7.1.1"
   resolved "https://registry.yarnpkg.com/glob/-/glob-7.1.1.tgz#805211df04faaf1c63a3600306cdf5ade50b2ec8"
@@ -1258,7 +1348,17 @@ glob@7.1.1:
     once "^1.3.0"
     path-is-absolute "^1.0.0"
 
-glob@^7.0.3, glob@^7.0.5, glob@^7.0.6, glob@^7.1.1, glob@^7.1.2:
+glob@^6.0.4:
+  version "6.0.4"
+  resolved "https://registry.yarnpkg.com/glob/-/glob-6.0.4.tgz#0f08860f6a155127b2fadd4f9ce24b1aab6e4d22"
+  dependencies:
+    inflight "^1.0.4"
+    inherits "2"
+    minimatch "2 || 3"
+    once "^1.3.0"
+    path-is-absolute "^1.0.0"
+
+glob@^7.0.0, glob@^7.0.3, glob@^7.0.5, glob@^7.0.6, glob@^7.1.1, glob@^7.1.2, glob@~7.1.1:
   version "7.1.2"
   resolved "https://registry.yarnpkg.com/glob/-/glob-7.1.2.tgz#c19c9df9a028702d678612384a6552404c636d15"
   dependencies:
@@ -1288,6 +1388,14 @@ globby@^5.0.0:
     pify "^2.0.0"
     pinkie-promise "^2.0.0"
 
+globule@^1.0.0:
+  version "1.2.0"
+  resolved "https://registry.yarnpkg.com/globule/-/globule-1.2.0.tgz#1dc49c6822dd9e8a2fa00ba2a295006e8664bd09"
+  dependencies:
+    glob "~7.1.1"
+    lodash "~4.17.4"
+    minimatch "~3.0.2"
+
 graceful-fs@^4.1.11, graceful-fs@^4.1.2, graceful-fs@^4.1.6, graceful-fs@^4.1.9:
   version "4.1.11"
   resolved "https://registry.yarnpkg.com/graceful-fs/-/graceful-fs-4.1.11.tgz#0e8bdfe4d1ddb8854d64e04ea7c00e2a026e5658"
@@ -1450,10 +1558,18 @@ ignore@^3.3.3:
   version "3.3.7"
   resolved "https://registry.yarnpkg.com/ignore/-/ignore-3.3.7.tgz#612289bfb3c220e186a58118618d5be8c1bab021"
 
+image-size@~0.5.0:
+  version "0.5.5"
+  resolved "https://registry.yarnpkg.com/image-size/-/image-size-0.5.5.tgz#09dfd4ab9d20e29eb1c3e80b8990378df9e3cb9c"
+
 imurmurhash@^0.1.4:
   version "0.1.4"
   resolved "https://registry.yarnpkg.com/imurmurhash/-/imurmurhash-0.1.4.tgz#9218b9b2b928a238b13dc4fb6b6d576f231453ea"
 
+in-publish@^2.0.0:
+  version "2.0.0"
+  resolved "https://registry.yarnpkg.com/in-publish/-/in-publish-2.0.0.tgz#e20ff5e3a2afc2690320b6dc552682a9c7fadf51"
+
 indent-string@^2.1.0:
   version "2.1.0"
   resolved "https://registry.yarnpkg.com/indent-string/-/indent-string-2.1.0.tgz#8e2d48348742121b4a8218b7a137e9a52049dc80"
@@ -1534,6 +1650,20 @@ is-equal-shallow@^0.1.3:
   dependencies:
     is-primitive "^2.0.0"
 
+is-expression@^2.0.1:
+  version "2.1.0"
+  resolved "https://registry.yarnpkg.com/is-expression/-/is-expression-2.1.0.tgz#91be9d47debcfef077977e9722be6dcfb4465ef0"
+  dependencies:
+    acorn "~3.3.0"
+    object-assign "^4.0.1"
+
+is-expression@^3.0.0:
+  version "3.0.0"
+  resolved "https://registry.yarnpkg.com/is-expression/-/is-expression-3.0.0.tgz#39acaa6be7fd1f3471dc42c7416e61c24317ac9f"
+  dependencies:
+    acorn "~4.0.2"
+    object-assign "^4.0.1"
+
 is-extendable@^0.1.1:
   version "0.1.1"
   resolved "https://registry.yarnpkg.com/is-extendable/-/is-extendable-0.1.1.tgz#62b110e289a471418e3ec36a617d472e301dfc89"
@@ -1613,7 +1743,7 @@ is-primitive@^2.0.0:
   version "2.0.0"
   resolved "https://registry.yarnpkg.com/is-primitive/-/is-primitive-2.0.0.tgz#207bab91638499c07b2adf240a41a87210034575"
 
-is-promise@^2.1.0:
+is-promise@^2.0.0, is-promise@^2.1.0:
   version "2.1.0"
   resolved "https://registry.yarnpkg.com/is-promise/-/is-promise-2.1.0.tgz#79a2a9ece7f096e80f36d2b2f3bc16c1ff4bf3fa"
 
@@ -1621,6 +1751,12 @@ is-property@^1.0.0:
   version "1.0.2"
   resolved "https://registry.yarnpkg.com/is-property/-/is-property-1.0.2.tgz#57fe1c4e48474edd65b09911f26b1cd4095dda84"
 
+is-regex@^1.0.3:
+  version "1.0.4"
+  resolved "https://registry.yarnpkg.com/is-regex/-/is-regex-1.0.4.tgz#5517489b547091b0930e095654ced25ee97e9491"
+  dependencies:
+    has "^1.0.1"
+
 is-resolvable@^1.0.0:
   version "1.0.0"
   resolved "https://registry.yarnpkg.com/is-resolvable/-/is-resolvable-1.0.0.tgz#8df57c61ea2e3c501408d100fb013cf8d6e0cc62"
@@ -1708,6 +1844,14 @@ istanbul-reports@^1.1.3:
   dependencies:
     handlebars "^4.0.3"
 
+js-base64@^2.1.8:
+  version "2.3.2"
+  resolved "https://registry.yarnpkg.com/js-base64/-/js-base64-2.3.2.tgz#a79a923666372b580f8e27f51845c6f7e8fbfbaf"
+
+js-stringify@^1.0.1:
+  version "1.0.2"
+  resolved "https://registry.yarnpkg.com/js-stringify/-/js-stringify-1.0.2.tgz#1736fddfd9724f28a3682adc6230ae7e4e9679db"
+
 js-tokens@^3.0.0, js-tokens@^3.0.2:
   version "3.0.2"
   resolved "https://registry.yarnpkg.com/js-tokens/-/js-tokens-3.0.2.tgz#9866df395102130e38f7f996bceb65443209c25b"
@@ -1809,6 +1953,13 @@ jsprim@^1.2.2:
     json-schema "0.2.3"
     verror "1.10.0"
 
+jstransformer@1.0.0:
+  version "1.0.0"
+  resolved "https://registry.yarnpkg.com/jstransformer/-/jstransformer-1.0.0.tgz#ed8bf0921e2f3f1ed4d5c1a44f68709ed24722c3"
+  dependencies:
+    is-promise "^2.0.0"
+    promise "^7.0.1"
+
 keypress@0.1.x:
   version "0.1.0"
   resolved "https://registry.yarnpkg.com/keypress/-/keypress-0.1.0.tgz#4a3188d4291b66b4f65edb99f806aa9ae293592a"
@@ -1845,6 +1996,19 @@ left-pad@^1.2.0:
   version "1.2.0"
   resolved "https://registry.yarnpkg.com/left-pad/-/left-pad-1.2.0.tgz#d30a73c6b8201d8f7d8e7956ba9616087a68e0ee"
 
+less@^2.7.3:
+  version "2.7.3"
+  resolved "https://registry.yarnpkg.com/less/-/less-2.7.3.tgz#cc1260f51c900a9ec0d91fb6998139e02507b63b"
+  optionalDependencies:
+    errno "^0.1.1"
+    graceful-fs "^4.1.2"
+    image-size "~0.5.0"
+    mime "^1.2.11"
+    mkdirp "^0.5.0"
+    promise "^7.1.1"
+    request "2.81.0"
+    source-map "^0.5.3"
+
 levn@^0.3.0, levn@~0.3.0:
   version "0.3.0"
   resolved "https://registry.yarnpkg.com/levn/-/levn-0.3.0.tgz#3b09924edf9f083c0490fdd4c0bc4421e04764ee"
@@ -1905,6 +2069,14 @@ lodash._isiterateecall@^3.0.0:
   version "3.0.9"
   resolved "https://registry.yarnpkg.com/lodash._isiterateecall/-/lodash._isiterateecall-3.0.9.tgz#5203ad7ba425fae842460e696db9cf3e6aac057c"
 
+lodash.assign@^4.2.0:
+  version "4.2.0"
+  resolved "https://registry.yarnpkg.com/lodash.assign/-/lodash.assign-4.2.0.tgz#0d99f3ccd7a6d261d19bdaeb9245005d285808e7"
+
+lodash.clonedeep@^4.3.2:
+  version "4.5.0"
+  resolved "https://registry.yarnpkg.com/lodash.clonedeep/-/lodash.clonedeep-4.5.0.tgz#e23f3f9c4f8fbdde872529c1071857a086e5ccef"
+
 lodash.cond@^4.3.0:
   version "4.5.2"
   resolved "https://registry.yarnpkg.com/lodash.cond/-/lodash.cond-4.5.2.tgz#f471a1da486be60f6ab955d17115523dd1d255d5"
@@ -1933,6 +2105,10 @@ lodash.keys@^3.0.0:
     lodash.isarguments "^3.0.0"
     lodash.isarray "^3.0.0"
 
+lodash.mergewith@^4.6.0:
+  version "4.6.0"
+  resolved "https://registry.yarnpkg.com/lodash.mergewith/-/lodash.mergewith-4.6.0.tgz#150cf0a16791f5903b8891eab154609274bdea55"
+
 lodash.sortby@^4.7.0:
   version "4.7.0"
   resolved "https://registry.yarnpkg.com/lodash.sortby/-/lodash.sortby-4.7.0.tgz#edd14c824e2cc9c1e0b0a1b42bb5210516a42438"
@@ -1941,7 +2117,7 @@ lodash@3.0.x:
   version "3.0.1"
   resolved "https://registry.yarnpkg.com/lodash/-/lodash-3.0.1.tgz#14d49028a38bc740241d11e2ecd57ec06d73c19a"
 
-lodash@^4.13.1, lodash@^4.17.4, lodash@^4.3.0:
+lodash@^4.0.0, lodash@^4.13.1, lodash@^4.17.4, lodash@^4.3.0, lodash@~4.17.4:
   version "4.17.4"
   resolved "https://registry.yarnpkg.com/lodash/-/lodash-4.17.4.tgz#78203a4d1c328ae1d86dca6460e369b57f4055ae"
 
@@ -2009,7 +2185,7 @@ mem@^1.1.0:
   dependencies:
     mimic-fn "^1.0.0"
 
-meow@^3.1.0:
+meow@^3.1.0, meow@^3.7.0:
   version "3.7.0"
   resolved "https://registry.yarnpkg.com/meow/-/meow-3.7.0.tgz#72cb668b425228290abbfa856892587308a801fb"
   dependencies:
@@ -2058,11 +2234,15 @@ mime-types@^2.1.12, mime-types@~2.1.17, mime-types@~2.1.7:
   dependencies:
     mime-db "~1.30.0"
 
+mime@^1.2.11:
+  version "1.6.0"
+  resolved "https://registry.yarnpkg.com/mime/-/mime-1.6.0.tgz#32cd9e5c64553bd58d19a568af452acff04981b1"
+
 mimic-fn@^1.0.0:
   version "1.1.0"
   resolved "https://registry.yarnpkg.com/mimic-fn/-/mimic-fn-1.1.0.tgz#e667783d92e89dbd342818b5230b9d62a672ad18"
 
-minimatch@^3.0.0, minimatch@^3.0.2, minimatch@^3.0.3, minimatch@^3.0.4:
+"minimatch@2 || 3", minimatch@^3.0.0, minimatch@^3.0.2, minimatch@^3.0.3, minimatch@^3.0.4, minimatch@~3.0.2:
   version "3.0.4"
   resolved "https://registry.yarnpkg.com/minimatch/-/minimatch-3.0.4.tgz#5166e286457f03306064be5497e8dbb0c3d32083"
   dependencies:
@@ -2104,7 +2284,7 @@ mkdirp@0.5.0:
   dependencies:
     minimist "0.0.8"
 
-mkdirp@0.5.1, "mkdirp@>=0.5 0", mkdirp@^0.5.0, mkdirp@^0.5.1:
+mkdirp@0.5.1, mkdirp@0.5.x, "mkdirp@>=0.5 0", mkdirp@^0.5.0, mkdirp@^0.5.1:
   version "0.5.1"
   resolved "https://registry.yarnpkg.com/mkdirp/-/mkdirp-0.5.1.tgz#30057438eac6cf7f8c4767f38648d6697d75c903"
   dependencies:
@@ -2135,7 +2315,7 @@ mute-stream@0.0.7:
   version "0.0.7"
   resolved "https://registry.yarnpkg.com/mute-stream/-/mute-stream-0.0.7.tgz#3075ce93bc21b8fab43e1bc4da7e8115ed1e7bab"
 
-nan@^2.3.0:
+nan@^2.3.0, nan@^2.3.2:
   version "2.8.0"
   resolved "https://registry.yarnpkg.com/nan/-/nan-2.8.0.tgz#ed715f3fe9de02b57a5e6252d90a96675e1f085a"
 
@@ -2161,6 +2341,24 @@ nightmare@^2.10.0:
     sliced "1.0.1"
     split2 "^2.0.1"
 
+node-gyp@^3.3.1:
+  version "3.6.2"
+  resolved "https://registry.yarnpkg.com/node-gyp/-/node-gyp-3.6.2.tgz#9bfbe54562286284838e750eac05295853fa1c60"
+  dependencies:
+    fstream "^1.0.0"
+    glob "^7.0.3"
+    graceful-fs "^4.1.2"
+    minimatch "^3.0.2"
+    mkdirp "^0.5.0"
+    nopt "2 || 3"
+    npmlog "0 || 1 || 2 || 3 || 4"
+    osenv "0"
+    request "2"
+    rimraf "2"
+    semver "~5.3.0"
+    tar "^2.0.0"
+    which "1"
+
 node-pre-gyp@^0.6.39:
   version "0.6.39"
   resolved "https://registry.yarnpkg.com/node-pre-gyp/-/node-pre-gyp-0.6.39.tgz#c00e96860b23c0e1420ac7befc5044e1d78d8649"
@@ -2184,10 +2382,40 @@ node-resolve@^1.3.3:
     is-builtin-module "^1.0.0"
     lodash "^4.13.1"
 
+node-sass@^4.7.1:
+  version "4.7.2"
+  resolved "https://registry.yarnpkg.com/node-sass/-/node-sass-4.7.2.tgz#9366778ba1469eb01438a9e8592f4262bcb6794e"
+  dependencies:
+    async-foreach "^0.1.3"
+    chalk "^1.1.1"
+    cross-spawn "^3.0.0"
+    gaze "^1.0.0"
+    get-stdin "^4.0.1"
+    glob "^7.0.3"
+    in-publish "^2.0.0"
+    lodash.assign "^4.2.0"
+    lodash.clonedeep "^4.3.2"
+    lodash.mergewith "^4.6.0"
+    meow "^3.7.0"
+    mkdirp "^0.5.1"
+    nan "^2.3.2"
+    node-gyp "^3.3.1"
+    npmlog "^4.0.0"
+    request "~2.79.0"
+    sass-graph "^2.2.4"
+    stdout-stream "^1.4.0"
+    "true-case-path" "^1.0.2"
+
 node-uuid@~1.4.7:
   version "1.4.8"
   resolved "https://registry.yarnpkg.com/node-uuid/-/node-uuid-1.4.8.tgz#b040eb0923968afabf8d32fb1f17f1167fdab907"
 
+"nopt@2 || 3":
+  version "3.0.6"
+  resolved "https://registry.yarnpkg.com/nopt/-/nopt-3.0.6.tgz#c6465dbf08abcd4db359317f79ac68a646b28ff9"
+  dependencies:
+    abbrev "1"
+
 nopt@^4.0.1:
   version "4.0.1"
   resolved "https://registry.yarnpkg.com/nopt/-/nopt-4.0.1.tgz#d0d4685afd5415193c8c7505602d0d17cd64474d"
@@ -2216,7 +2444,7 @@ npm-run-path@^2.0.0:
   dependencies:
     path-key "^2.0.0"
 
-npmlog@^4.0.2:
+"npmlog@0 || 1 || 2 || 3 || 4", npmlog@^4.0.0, npmlog@^4.0.2:
   version "4.1.2"
   resolved "https://registry.yarnpkg.com/npmlog/-/npmlog-4.1.2.tgz#08a7f2a8bf734604779a9efa4ad5cc717abb954b"
   dependencies:
@@ -2330,6 +2558,12 @@ os-homedir@^1.0.0, os-homedir@^1.0.1:
   version "1.0.2"
   resolved "https://registry.yarnpkg.com/os-homedir/-/os-homedir-1.0.2.tgz#ffbc4988336e0e833de0c168c7ef152121aa7fb3"
 
+os-locale@^1.4.0:
+  version "1.4.0"
+  resolved "https://registry.yarnpkg.com/os-locale/-/os-locale-1.4.0.tgz#20f9f17ae29ed345e8bde583b13d2009803c14d9"
+  dependencies:
+    lcid "^1.0.0"
+
 os-locale@^2.0.0:
   version "2.1.0"
   resolved "https://registry.yarnpkg.com/os-locale/-/os-locale-2.1.0.tgz#42bc2900a6b5b8bd17376c8e882b65afccf24bf2"
@@ -2342,7 +2576,7 @@ os-tmpdir@^1.0.0, os-tmpdir@~1.0.2:
   version "1.0.2"
   resolved "https://registry.yarnpkg.com/os-tmpdir/-/os-tmpdir-1.0.2.tgz#bbe67406c79aa85c5cfec766fe5734555dfa1274"
 
-osenv@^0.1.4:
+osenv@0, osenv@^0.1.4:
   version "0.1.4"
   resolved "https://registry.yarnpkg.com/osenv/-/osenv-0.1.4.tgz#42fe6d5953df06c8064be6f176c3d05aaaa34644"
   dependencies:
@@ -2502,10 +2736,113 @@ progress@^2.0.0:
   version "2.0.0"
   resolved "https://registry.yarnpkg.com/progress/-/progress-2.0.0.tgz#8a1be366bf8fc23db2bd23f10c6fe920b4389d1f"
 
+promise@^7.0.1, promise@^7.1.1:
+  version "7.3.1"
+  resolved "https://registry.yarnpkg.com/promise/-/promise-7.3.1.tgz#064b72602b18f90f29192b8b1bc418ffd1ebd3bf"
+  dependencies:
+    asap "~2.0.3"
+
+prr@~0.0.0:
+  version "0.0.0"
+  resolved "https://registry.yarnpkg.com/prr/-/prr-0.0.0.tgz#1a84b85908325501411853d0081ee3fa86e2926a"
+
 pseudomap@^1.0.2:
   version "1.0.2"
   resolved "https://registry.yarnpkg.com/pseudomap/-/pseudomap-1.0.2.tgz#f052a28da70e618917ef0a8ac34c1ae5a68286b3"
 
+pug-attrs@^2.0.2:
+  version "2.0.2"
+  resolved "https://registry.yarnpkg.com/pug-attrs/-/pug-attrs-2.0.2.tgz#8be2b2225568ffa75d1b866982bff9f4111affcb"
+  dependencies:
+    constantinople "^3.0.1"
+    js-stringify "^1.0.1"
+    pug-runtime "^2.0.3"
+
+pug-code-gen@^2.0.0:
+  version "2.0.0"
+  resolved "https://registry.yarnpkg.com/pug-code-gen/-/pug-code-gen-2.0.0.tgz#96aea39a9e62f1ec5d2b6a5b42a29d528c70b43d"
+  dependencies:
+    constantinople "^3.0.1"
+    doctypes "^1.1.0"
+    js-stringify "^1.0.1"
+    pug-attrs "^2.0.2"
+    pug-error "^1.3.2"
+    pug-runtime "^2.0.3"
+    void-elements "^2.0.1"
+    with "^5.0.0"
+
+pug-error@^1.3.2:
+  version "1.3.2"
+  resolved "https://registry.yarnpkg.com/pug-error/-/pug-error-1.3.2.tgz#53ae7d9d29bb03cf564493a026109f54c47f5f26"
+
+pug-filters@^2.1.5:
+  version "2.1.5"
+  resolved "https://registry.yarnpkg.com/pug-filters/-/pug-filters-2.1.5.tgz#66bf6e80d97fbef829bab0aa35eddff33fc964f3"
+  dependencies:
+    clean-css "^3.3.0"
+    constantinople "^3.0.1"
+    jstransformer "1.0.0"
+    pug-error "^1.3.2"
+    pug-walk "^1.1.5"
+    resolve "^1.1.6"
+    uglify-js "^2.6.1"
+
+pug-lexer@^3.1.0:
+  version "3.1.0"
+  resolved "https://registry.yarnpkg.com/pug-lexer/-/pug-lexer-3.1.0.tgz#fd087376d4a675b4f59f8fef422883434e9581a2"
+  dependencies:
+    character-parser "^2.1.1"
+    is-expression "^3.0.0"
+    pug-error "^1.3.2"
+
+pug-linker@^3.0.3:
+  version "3.0.3"
+  resolved "https://registry.yarnpkg.com/pug-linker/-/pug-linker-3.0.3.tgz#25f59eb750237f0368e59c3379764229c0189c41"
+  dependencies:
+    pug-error "^1.3.2"
+    pug-walk "^1.1.5"
+
+pug-load@^2.0.9:
+  version "2.0.9"
+  resolved "https://registry.yarnpkg.com/pug-load/-/pug-load-2.0.9.tgz#ee217c914cc1d9324d44b86c32d1df241d36de7a"
+  dependencies:
+    object-assign "^4.1.0"
+    pug-walk "^1.1.5"
+
+pug-parser@^4.0.0:
+  version "4.0.0"
+  resolved "https://registry.yarnpkg.com/pug-parser/-/pug-parser-4.0.0.tgz#c9f52322e4eabe4bf5beeba64ed18373bb627801"
+  dependencies:
+    pug-error "^1.3.2"
+    token-stream "0.0.1"
+
+pug-runtime@^2.0.3:
+  version "2.0.3"
+  resolved "https://registry.yarnpkg.com/pug-runtime/-/pug-runtime-2.0.3.tgz#98162607b0fce9e254d427f33987a5aee7168bda"
+
+pug-strip-comments@^1.0.2:
+  version "1.0.2"
+  resolved "https://registry.yarnpkg.com/pug-strip-comments/-/pug-strip-comments-1.0.2.tgz#d313afa01bcc374980e1399e23ebf2eb9bdc8513"
+  dependencies:
+    pug-error "^1.3.2"
+
+pug-walk@^1.1.5:
+  version "1.1.5"
+  resolved "https://registry.yarnpkg.com/pug-walk/-/pug-walk-1.1.5.tgz#90e943acbcf7021e6454cf1b32245891cba6f851"
+
+pug@^2.0.0-rc.4:
+  version "2.0.0-rc.4"
+  resolved "https://registry.yarnpkg.com/pug/-/pug-2.0.0-rc.4.tgz#b7b08f6599bd5302568042b7436984fb28c80a13"
+  dependencies:
+    pug-code-gen "^2.0.0"
+    pug-filters "^2.1.5"
+    pug-lexer "^3.1.0"
+    pug-linker "^3.0.3"
+    pug-load "^2.0.9"
+    pug-parser "^4.0.0"
+    pug-runtime "^2.0.3"
+    pug-strip-comments "^1.0.2"
+
 punycode@^1.4.1:
   version "1.4.1"
   resolved "https://registry.yarnpkg.com/punycode/-/punycode-1.4.1.tgz#c0d5a63b2718800ad8e1eb0fa5269c84dd41845e"
@@ -2572,7 +2909,7 @@ read-pkg@^2.0.0:
     normalize-package-data "^2.3.2"
     path-type "^2.0.0"
 
-readable-stream@^2.0.2, readable-stream@^2.0.6, readable-stream@^2.1.4, readable-stream@^2.1.5, readable-stream@^2.2.2:
+readable-stream@^2.0.1, readable-stream@^2.0.2, readable-stream@^2.0.6, readable-stream@^2.1.4, readable-stream@^2.1.5, readable-stream@^2.2.2:
   version "2.3.3"
   resolved "https://registry.yarnpkg.com/readable-stream/-/readable-stream-2.3.3.tgz#368f2512d79f9d46fdfc71349ae7878bbc1eb95c"
   dependencies:
@@ -2659,6 +2996,33 @@ request-promise-native@^1.0.3:
     stealthy-require "^1.1.0"
     tough-cookie ">=2.3.3"
 
+request@2, request@^2.45.0, request@^2.83.0:
+  version "2.83.0"
+  resolved "https://registry.yarnpkg.com/request/-/request-2.83.0.tgz#ca0b65da02ed62935887808e6f510381034e3356"
+  dependencies:
+    aws-sign2 "~0.7.0"
+    aws4 "^1.6.0"
+    caseless "~0.12.0"
+    combined-stream "~1.0.5"
+    extend "~3.0.1"
+    forever-agent "~0.6.1"
+    form-data "~2.3.1"
+    har-validator "~5.0.3"
+    hawk "~6.0.2"
+    http-signature "~1.2.0"
+    is-typedarray "~1.0.0"
+    isstream "~0.1.2"
+    json-stringify-safe "~5.0.1"
+    mime-types "~2.1.17"
+    oauth-sign "~0.8.2"
+    performance-now "^2.1.0"
+    qs "~6.5.1"
+    safe-buffer "^5.1.1"
+    stringstream "~0.0.5"
+    tough-cookie "~2.3.3"
+    tunnel-agent "^0.6.0"
+    uuid "^3.1.0"
+
 request@2.77.0:
   version "2.77.0"
   resolved "https://registry.yarnpkg.com/request/-/request-2.77.0.tgz#2b00d82030ededcc97089ffa5d8810a9c2aa314b"
@@ -2711,32 +3075,30 @@ request@2.81.0:
     tunnel-agent "^0.6.0"
     uuid "^3.0.0"
 
-request@^2.45.0, request@^2.83.0:
-  version "2.83.0"
-  resolved "https://registry.yarnpkg.com/request/-/request-2.83.0.tgz#ca0b65da02ed62935887808e6f510381034e3356"
+request@~2.79.0:
+  version "2.79.0"
+  resolved "https://registry.yarnpkg.com/request/-/request-2.79.0.tgz#4dfe5bf6be8b8cdc37fcf93e04b65577722710de"
   dependencies:
-    aws-sign2 "~0.7.0"
-    aws4 "^1.6.0"
-    caseless "~0.12.0"
+    aws-sign2 "~0.6.0"
+    aws4 "^1.2.1"
+    caseless "~0.11.0"
     combined-stream "~1.0.5"
-    extend "~3.0.1"
+    extend "~3.0.0"
     forever-agent "~0.6.1"
-    form-data "~2.3.1"
-    har-validator "~5.0.3"
-    hawk "~6.0.2"
-    http-signature "~1.2.0"
+    form-data "~2.1.1"
+    har-validator "~2.0.6"
+    hawk "~3.1.3"
+    http-signature "~1.1.0"
     is-typedarray "~1.0.0"
     isstream "~0.1.2"
     json-stringify-safe "~5.0.1"
-    mime-types "~2.1.17"
-    oauth-sign "~0.8.2"
-    performance-now "^2.1.0"
-    qs "~6.5.1"
-    safe-buffer "^5.1.1"
-    stringstream "~0.0.5"
-    tough-cookie "~2.3.3"
-    tunnel-agent "^0.6.0"
-    uuid "^3.1.0"
+    mime-types "~2.1.7"
+    oauth-sign "~0.8.1"
+    qs "~6.3.0"
+    stringstream "~0.0.4"
+    tough-cookie "~2.3.0"
+    tunnel-agent "~0.4.1"
+    uuid "^3.0.0"
 
 require-directory@^2.1.1:
   version "2.1.1"
@@ -2894,14 +3256,38 @@ safe-buffer@^5.0.1, safe-buffer@^5.1.1, safe-buffer@~5.1.0, safe-buffer@~5.1.1:
   version "5.1.1"
   resolved "https://registry.yarnpkg.com/safe-buffer/-/safe-buffer-5.1.1.tgz#893312af69b2123def71f57889001671eeb2c853"
 
+sass-graph@^2.2.4:
+  version "2.2.4"
+  resolved "https://registry.yarnpkg.com/sass-graph/-/sass-graph-2.2.4.tgz#13fbd63cd1caf0908b9fd93476ad43a51d1e0b49"
+  dependencies:
+    glob "^7.0.0"
+    lodash "^4.0.0"
+    scss-tokenizer "^0.2.3"
+    yargs "^7.0.0"
+
+sax@0.5.x:
+  version "0.5.8"
+  resolved "https://registry.yarnpkg.com/sax/-/sax-0.5.8.tgz#d472db228eb331c2506b0e8c15524adb939d12c1"
+
 sax@^1.2.1:
   version "1.2.4"
   resolved "https://registry.yarnpkg.com/sax/-/sax-1.2.4.tgz#2816234e2378bddc4e5354fab5caa895df7100d9"
 
+scss-tokenizer@^0.2.3:
+  version "0.2.3"
+  resolved "https://registry.yarnpkg.com/scss-tokenizer/-/scss-tokenizer-0.2.3.tgz#8eb06db9a9723333824d3f5530641149847ce5d1"
+  dependencies:
+    js-base64 "^2.1.8"
+    source-map "^0.4.2"
+
 "semver@2 || 3 || 4 || 5", semver@^5.3.0, semver@^5.4.1:
   version "5.4.1"
   resolved "https://registry.yarnpkg.com/semver/-/semver-5.4.1.tgz#e059c09d8571f0540823733433505d3a2f00b18e"
 
+semver@~5.3.0:
+  version "5.3.0"
+  resolved "https://registry.yarnpkg.com/semver/-/semver-5.3.0.tgz#9b2ce5d3de02d17c6012ad326aa6b4d0cf54f94f"
+
 set-blocking@^2.0.0, set-blocking@~2.0.0:
   version "2.0.0"
   resolved "https://registry.yarnpkg.com/set-blocking/-/set-blocking-2.0.0.tgz#045f9782d011ae9a6803ddd382b24392b3d890f7"
@@ -2966,7 +3352,13 @@ source-map-support@^0.4.0, source-map-support@^0.4.8:
   dependencies:
     source-map "^0.5.6"
 
-source-map@^0.4.4:
+source-map@0.1.x:
+  version "0.1.43"
+  resolved "https://registry.yarnpkg.com/source-map/-/source-map-0.1.43.tgz#c24bc146ca517c1471f5dacbe2571b2b7f9e3346"
+  dependencies:
+    amdefine ">=0.0.4"
+
+source-map@0.4.x, source-map@^0.4.2, source-map@^0.4.4:
   version "0.4.4"
   resolved "https://registry.yarnpkg.com/source-map/-/source-map-0.4.4.tgz#eba4f5da9c0dc999de68032d8b4f76173652036b"
   dependencies:
@@ -3029,6 +3421,12 @@ sshpk@^1.7.0:
     jsbn "~0.1.0"
     tweetnacl "~0.14.0"
 
+stdout-stream@^1.4.0:
+  version "1.4.0"
+  resolved "https://registry.yarnpkg.com/stdout-stream/-/stdout-stream-1.4.0.tgz#a2c7c8587e54d9427ea9edb3ac3f2cd522df378b"
+  dependencies:
+    readable-stream "^2.0.1"
+
 stealthy-require@^1.1.0:
   version "1.1.1"
   resolved "https://registry.yarnpkg.com/stealthy-require/-/stealthy-require-1.1.1.tgz#35b09875b4ff49f26a777e509b3090a3226bf24b"
@@ -3098,6 +3496,17 @@ strip-json-comments@^2.0.0, strip-json-comments@~2.0.1:
   version "2.0.1"
   resolved "https://registry.yarnpkg.com/strip-json-comments/-/strip-json-comments-2.0.1.tgz#3c531942e908c2697c0ec344858c286c7ca0a60a"
 
+stylus@^0.54.5:
+  version "0.54.5"
+  resolved "https://registry.yarnpkg.com/stylus/-/stylus-0.54.5.tgz#42b9560931ca7090ce8515a798ba9e6aa3d6dc79"
+  dependencies:
+    css-parse "1.7.x"
+    debug "*"
+    glob "7.0.x"
+    mkdirp "0.5.x"
+    sax "0.5.x"
+    source-map "0.1.x"
+
 sumchecker@^1.2.0:
   version "1.3.1"
   resolved "https://registry.yarnpkg.com/sumchecker/-/sumchecker-1.3.1.tgz#79bb3b4456dd04f18ebdbc0d703a1d1daec5105d"
@@ -3155,7 +3564,7 @@ tar-pack@^3.4.0:
     tar "^2.2.1"
     uid-number "^0.0.6"
 
-tar@^2.2.1:
+tar@^2.0.0, tar@^2.2.1:
   version "2.2.1"
   resolved "https://registry.yarnpkg.com/tar/-/tar-2.2.1.tgz#8e4d2a256c0e2185c6b18ad694aec968b83cb1d1"
   dependencies:
@@ -3213,6 +3622,10 @@ to-fast-properties@^1.0.3:
   version "1.0.3"
   resolved "https://registry.yarnpkg.com/to-fast-properties/-/to-fast-properties-1.0.3.tgz#b83571fa4d8c25b82e231b06e3a3055de4ca1a47"
 
+token-stream@0.0.1:
+  version "0.0.1"
+  resolved "https://registry.yarnpkg.com/token-stream/-/token-stream-0.0.1.tgz#ceeefc717a76c4316f126d0b9dbaa55d7e7df01a"
+
 tough-cookie@>=2.3.3, tough-cookie@^2.3.3, tough-cookie@~2.3.0, tough-cookie@~2.3.3:
   version "2.3.3"
   resolved "https://registry.yarnpkg.com/tough-cookie/-/tough-cookie-2.3.3.tgz#0b618a5565b6dea90bf3425d04d55edc475a7561"
@@ -3233,6 +3646,12 @@ trim-right@^1.0.1:
   version "1.0.1"
   resolved "https://registry.yarnpkg.com/trim-right/-/trim-right-1.0.1.tgz#cb2e1203067e0c8de1f614094b9fe45704ea6003"
 
+"true-case-path@^1.0.2":
+  version "1.0.2"
+  resolved "https://registry.yarnpkg.com/true-case-path/-/true-case-path-1.0.2.tgz#7ec91130924766c7f573be3020c34f8fdfd00d62"
+  dependencies:
+    glob "^6.0.4"
+
 tryit@^1.0.1:
   version "1.0.3"
   resolved "https://registry.yarnpkg.com/tryit/-/tryit-1.0.3.tgz#393be730a9446fd1ead6da59a014308f36c289cb"
@@ -3295,7 +3714,7 @@ typescript@^2.6.1:
   version "2.6.1"
   resolved "https://registry.yarnpkg.com/typescript/-/typescript-2.6.1.tgz#ef39cdea27abac0b500242d6726ab90e0c846631"
 
-uglify-js@^2.6:
+uglify-js@^2.6, uglify-js@^2.6.1:
   version "2.8.29"
   resolved "https://registry.yarnpkg.com/uglify-js/-/uglify-js-2.8.29.tgz#29c5733148057bb4e1f75df35b7a9cb72e6a59dd"
   dependencies:
@@ -3349,6 +3768,10 @@ vlq@^0.2.1:
   version "0.2.3"
   resolved "https://registry.yarnpkg.com/vlq/-/vlq-0.2.3.tgz#8f3e4328cf63b1540c0d67e1b2778386f8975b26"
 
+void-elements@^2.0.1:
+  version "2.0.1"
+  resolved "https://registry.yarnpkg.com/void-elements/-/void-elements-2.0.1.tgz#c066afb582bb1cb4128d60ea92392e94d5e9dbec"
+
 webidl-conversions@^4.0.1, webidl-conversions@^4.0.2:
   version "4.0.2"
   resolved "https://registry.yarnpkg.com/webidl-conversions/-/webidl-conversions-4.0.2.tgz#a855980b1f0b6b359ba1d5d9fb39ae941faa63ad"
@@ -3367,11 +3790,15 @@ whatwg-url@^6.3.0:
     tr46 "^1.0.0"
     webidl-conversions "^4.0.1"
 
+which-module@^1.0.0:
+  version "1.0.0"
+  resolved "https://registry.yarnpkg.com/which-module/-/which-module-1.0.0.tgz#bba63ca861948994ff307736089e3b96026c2a4f"
+
 which-module@^2.0.0:
   version "2.0.0"
   resolved "https://registry.yarnpkg.com/which-module/-/which-module-2.0.0.tgz#d9ef07dce77b9902b8a3a8fa4b31c3e3f7e6e87a"
 
-which@^1.2.4, which@^1.2.9:
+which@1, which@^1.2.4, which@^1.2.9:
   version "1.3.0"
   resolved "https://registry.yarnpkg.com/which/-/which-1.3.0.tgz#ff04bdfc010ee547d780bec38e1ac1c2777d253a"
   dependencies:
@@ -3387,6 +3814,13 @@ window-size@0.1.0:
   version "0.1.0"
   resolved "https://registry.yarnpkg.com/window-size/-/window-size-0.1.0.tgz#5438cd2ea93b202efa3a19fe8887aee7c94f9c9d"
 
+with@^5.0.0:
+  version "5.1.1"
+  resolved "https://registry.yarnpkg.com/with/-/with-5.1.1.tgz#fa4daa92daf32c4ea94ed453c81f04686b575dfe"
+  dependencies:
+    acorn "^3.1.0"
+    acorn-globals "^3.0.0"
+
 wordwrap@0.0.2:
   version "0.0.2"
   resolved "https://registry.yarnpkg.com/wordwrap/-/wordwrap-0.0.2.tgz#b79669bb42ecb409f83d583cad52ca17eaa1643f"
@@ -3450,6 +3884,12 @@ yallist@^3.0.0:
   version "3.0.2"
   resolved "https://registry.yarnpkg.com/yallist/-/yallist-3.0.2.tgz#8452b4bb7e83c7c188d8041c1a837c773d6d8bb9"
 
+yargs-parser@^5.0.0:
+  version "5.0.0"
+  resolved "https://registry.yarnpkg.com/yargs-parser/-/yargs-parser-5.0.0.tgz#275ecf0d7ffe05c77e64e7c86e4cd94bf0e1228a"
+  dependencies:
+    camelcase "^3.0.0"
+
 yargs-parser@^8.0.0:
   version "8.0.0"
   resolved "https://registry.yarnpkg.com/yargs-parser/-/yargs-parser-8.0.0.tgz#21d476330e5a82279a4b881345bf066102e219c6"
@@ -3473,6 +3913,24 @@ yargs@^10.0.3:
     y18n "^3.2.1"
     yargs-parser "^8.0.0"
 
+yargs@^7.0.0:
+  version "7.1.0"
+  resolved "https://registry.yarnpkg.com/yargs/-/yargs-7.1.0.tgz#6ba318eb16961727f5d284f8ea003e8d6154d0c8"
+  dependencies:
+    camelcase "^3.0.0"
+    cliui "^3.2.0"
+    decamelize "^1.1.1"
+    get-caller-file "^1.0.1"
+    os-locale "^1.4.0"
+    read-pkg-up "^1.0.1"
+    require-directory "^2.1.1"
+    require-main-filename "^1.0.1"
+    set-blocking "^2.0.0"
+    string-width "^1.0.2"
+    which-module "^1.0.0"
+    y18n "^3.2.1"
+    yargs-parser "^5.0.0"
+
 yargs@~3.10.0:
   version "3.10.0"
   resolved "https://registry.yarnpkg.com/yargs/-/yargs-3.10.0.tgz#f7ee7bd857dd7c1d2d38c0e74efbd681d1431fd1"