Initial commit

.editorconfig

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+# EditorConfig is awesome: http://EditorConfig.org
+
+# top-most EditorConfig file
+root = true
+
+[*]
+charset = utf-8
+end_of_line = lf
+indent_style = tab
+indent_size = 2
+insert_final_newline = true
+tab_width = 4
+trim_trailing_whitespace = true
+block_comment_start = /*
+block_comment = *
+block_comment_end = */
+
+[*.{cmd,bat}]
+end_of_line = crlf
+
+[{package.json,*.yml}]
+indent_style = space

.eslintrc.json

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+{
+	"parserOptions": {
+		"sourceType": "script",
+		"impliedStrict": false
+	},
+	"env": {
+		"es6": true,
+		"node": true
+	},
+	"extends": [
+		"standard"
+	],
+	"root": true,
+	"rules": {
+		"comma-dangle": [
+			"error",
+			{
+				"arrays": "always-multiline",
+				"objects": "always-multiline",
+				"imports": "always-multiline",
+				"exports": "always-multiline",
+				"functions": "never"
+			}
+		],
+		"comma-spacing": [
+			"error",
+			{
+				"after": true,
+				"before": false
+			}
+		],
+		"indent": [
+			"error",
+			"tab",
+			{
+				"SwitchCase": 1
+			}
+		],
+		"no-tabs": [
+			"off"
+		],
+		"no-var": [
+			"error"
+		],
+		"prefer-arrow-callback": [
+			"error"
+		],
+		"prefer-const": [
+			"error"
+		],
+		"quotes": [
+			"error",
+			"double"
+		],
+		"semi": [
+			"error",
+			"always",
+			{
+				"omitLastInOneLineBlock": false
+			}
+		],
+		"strict": [
+			"error",
+			"safe"
+		]
+	},
+	"overrides": [
+		{
+			"files": [
+				"test/**/*"
+			],
+			"env": {
+				"mocha": true
+			}
+		}
+	]
+}

.gitignore

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+# Created by https://www.gitignore.io/api/node
+
+### Node ###
+# Logs
+logs
+*.log
+npm-debug.log*
+yarn-debug.log*
+yarn-error.log*
+
+# Runtime data
+pids
+*.pid
+*.seed
+*.pid.lock
+
+# Directory for instrumented libs generated by jscoverage/JSCover
+lib-cov
+
+# Coverage directory used by tools like istanbul
+coverage
+
+# nyc test coverage
+.nyc_output
+
+# Grunt intermediate storage (http://gruntjs.com/creating-plugins#storing-task-files)
+.grunt
+
+# Bower dependency directory (https://bower.io/)
+bower_components
+
+# node-waf configuration
+.lock-wscript
+
+# Compiled binary addons (http://nodejs.org/api/addons.html)
+build/Release
+
+# Dependency directories
+node_modules/
+jspm_packages/
+
+# Typescript v1 declaration files
+typings/
+
+# Optional npm cache directory
+.npm
+
+# Optional eslint cache
+.eslintcache
+
+# Optional REPL history
+.node_repl_history
+
+# Output of 'npm pack'
+*.tgz
+
+# Yarn Integrity file
+.yarn-integrity
+
+# dotenv environment variables file
+.env
+
+
+
+# End of https://www.gitignore.io/api/node

.npmignore

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+*.log
+*.pid
+*.seed
+.editorconfig
+.eslintrc*
+.gitignore
+.grunt
+.lock-wscript
+.node_repl_history
+.nyc_output
+.stylelintrc*
+.travis.yml
+.vscode
+appveyor.yml
+coverage
+gulpfile.js
+lib-cov
+logs
+node_modules
+npm-debug.log*
+pids
+test

.travis.yml

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+dist: trusty
+sudo: false
+language: node_js
+
+node_js:
+  - stable
+  - 4
+
+after_script:
+  - npm run report-coverage

LICENSE

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+MIT License
+
+Copyright (c) 2018 刘祺
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.

README.md

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+PostCSS Syntax
+====
+
+[![NPM version](https://img.shields.io/npm/v/postcss-syntax.svg?style=flat-square)](https://www.npmjs.com/package/postcss-syntax)
+[![Travis](https://img.shields.io/travis/gucong3000/postcss-syntax.svg)](https://travis-ci.org/gucong3000/postcss-syntax)
+[![Codecov](https://img.shields.io/codecov/c/github/gucong3000/postcss-syntax.svg)](https://codecov.io/gh/gucong3000/postcss-syntax)
+[![David](https://img.shields.io/david/gucong3000/postcss-syntax.svg)](https://david-dm.org/gucong3000/postcss-syntax)
+
+<img align="right" width="95" height="95"
+	title="Philosopher’s stone, logo of PostCSS"
+	src="http://postcss.github.io/postcss/logo.svg">
+
+[PostCSS](https://github.com/postcss/postcss) auto syntax switch tool
+
+## Getting Started
+
+First thing's first, install the module:
+
+```
+npm install postcss-syntax --save-dev
+```
+
+If you want support SCSS/SASS/LESS/SugarSS syntax, you need to install these module:
+
+- SCSS: [PostCSS-SCSS](https://github.com/postcss/postcss-scss)
+- SASS: [PostCSS-SASS](https://github.com/aleshaoleg/postcss-sass)
+- LESS: [PostCSS-LESS](https://github.com/shellscape/postcss-less)
+- SugarSS: [SugarSS](https://github.com/postcss/sugarss)
+
+If you want support HTML (and HTML-like)/Markdown/styled-components file format, you need to install these module:
+
+- SASS: [PostCSS-Markdown](https://github.com/gucong3000/postcss-markdown)
+- LESS: [PostCSS-Styled](https://github.com/gucong3000/postcss-styled)
+- SCSS: [PostCSS-HTML](https://github.com/gucong3000/postcss-html)
+
+## Use Cases
+
+```js
+const postcss = require('postcss');
+const syntax = require('postcss-syntax')({
+	processors: [
+		{
+			test: /\.(?:[sx]?html?|[sx]ht|vue|ux|php)$/i,
+			split: 'html',
+		},
+		{
+			test: /\.(?:markdown|md)$/i,
+			split: 'markdown',
+		},
+		{
+			test: /\.(?:m?[jt]sx?|es\d*|pac)$/i,
+			split: 'styled',
+		},
+		{
+			// custom file extension
+			test: /\.postcss$/i,
+			lang: 'scss'
+		},
+		{
+			// custom syntax engine
+			test: /\.customcss$/i,
+			lang: 'custom'
+		},
+	],
+	css: postcss,
+	sass: require('postcss-sass'),
+	scss: require('postcss-scss'),
+	less: require('postcss-less'),
+	sugarss: require('sugarss'),
+	// custom syntax engine
+	custom: require('postcss-custom-syntax'),
+
+});
+postcss(plugins).process(source, { syntax: syntax }).then(function (result) {
+	// An alias for the result.css property. Use it with syntaxes that generate non-CSS output.
+	result.content
+});
+```

lib/document.js

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+"use strict";
+const PostCssRoot = require("postcss/lib/root");
+const LazyResult = require("postcss/lib/lazy-result").prototype;
+const runRoot = LazyResult.run;
+
+class Document extends PostCssRoot {
+	toString (stringifier) {
+		return super.toString(stringifier || {
+			stringify: require("./stringify"),
+		});
+	}
+
+	each (callback) {
+		const result = this.nodes.map(node => node.each(callback));
+		return result.every(result => result !== false) && result.pop();
+	}
+
+	append () {
+		this.last.append.apply(
+			this.last,
+			Array.from(arguments)
+		);
+		return this;
+	}
+
+	prepend () {
+		this.first.prepend.apply(
+			this.first,
+			Array.from(arguments)
+		);
+		return this;
+	}
+
+	insertBefore (exist, add) {
+		exist.prepend(add);
+		return this;
+	}
+
+	insertAfter (exist, add) {
+		exist.append(add);
+		return this;
+	}
+}
+
+function isPromise (obj) {
+	return typeof obj === "object" && typeof obj.then === "function";
+}
+
+function runDocument (plugin) {
+	let result = this.result;
+	result.lastPlugin = plugin;
+	result = result.root.nodes.map(root => {
+		const childResult = root.toResult(result.opts);
+		try {
+			return plugin(root, childResult);
+		} catch (error) {
+			this.handleError(error, plugin);
+			throw error;
+		}
+	});
+	if (result.some(isPromise)) {
+		result = Promise.all(result);
+	}
+	return result;
+}
+
+LazyResult.run = function run () {
+	return (this.result.root instanceof Document ? runDocument : runRoot).apply(this, arguments);
+};
+
+module.exports = Document;