add linting (and some initial fixes)

4 files changed, 163 insertions, 0 deletions

diff --git a/node_modules/code-excerpt/index.js b/node_modules/code-excerpt/index.js
new file mode 100644
index 000000000..f9a2d51b3
--- /dev/null
+++ b/node_modules/code-excerpt/index.js
@@ -0,0 +1,38 @@
+'use strict';
+
+const tabsToSpaces = require('convert-to-spaces');
+
+const generateLineNumbers = (line, around) => {
+	const lineNumbers = [];
+
+	const min = line - around;
+	const max = line + around;
+
+	for (let lineNumber = min; lineNumber <= max; lineNumber++) {
+		lineNumbers.push(lineNumber);
+	}
+
+	return lineNumbers;
+};
+
+module.exports = (source, line, options) => {
+	if (typeof source !== 'string') {
+		throw new TypeError('Source code is missing.');
+	}
+
+	if (!line || line < 1) {
+		throw new TypeError('Line number must start from `1`.');
+	}
+
+	source = tabsToSpaces(source).split('\n');
+
+	if (line > source.length) {
+		return null;
+	}
+
+	options = Object.assign({around: 3}, options);
+
+	return generateLineNumbers(line, options.around)
+		.filter(line => source[line - 1] !== undefined)
+		.map(line => ({line, value: source[line - 1]}));
+};
diff --git a/node_modules/code-excerpt/license b/node_modules/code-excerpt/license
new file mode 100644
index 000000000..3e03f3e75
--- /dev/null
+++ b/node_modules/code-excerpt/license
@@ -0,0 +1,21 @@
+The MIT License (MIT)
+
+Copyright (c) vdemedes <vdemedes@gmail.com> (github.com/vdemedes)
+
+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.
diff --git a/node_modules/code-excerpt/package.json b/node_modules/code-excerpt/package.json
new file mode 100644
index 000000000..8c8917268
--- /dev/null
+++ b/node_modules/code-excerpt/package.json
@@ -0,0 +1,31 @@
+{
+  "name": "code-excerpt",
+  "version": "2.1.0",
+  "description": "Extract code excerpts",
+  "license": "MIT",
+  "repository": "vadimdemedes/code-excerpt",
+  "author": {
+    "name": "vdemedes",
+    "email": "vdemedes@gmail.com",
+    "url": "github.com/vadimdemedes"
+  },
+  "engines": {
+    "node": ">=4"
+  },
+  "scripts": {
+    "test": "xo && ava"
+  },
+  "files": [
+    "index.js"
+  ],
+  "dependencies": {
+    "convert-to-spaces": "^1.0.1"
+  },
+  "devDependencies": {
+    "ava": "^0.16.0",
+    "xo": "^0.17.1"
+  },
+  "xo": {
+    "esnext": true
+  }
+}
diff --git a/node_modules/code-excerpt/readme.md b/node_modules/code-excerpt/readme.md
new file mode 100644
index 000000000..216b6b3d5
--- /dev/null
+++ b/node_modules/code-excerpt/readme.md
@@ -0,0 +1,73 @@
+# code-excerpt [![Build Status](https://travis-ci.org/vadimdemedes/code-excerpt.svg?branch=master)](https://travis-ci.org/vadimdemedes/code-excerpt)
+
+> Extract code excerpts
+
+
+## Install
+
+```
+$ npm install --save code-excerpt
+```
+
+
+## Usage
+
+```js
+const codeExcerpt = require('code-excerpt');
+
+const source = `
+'use strict';
+
+function someFunc() {}
+
+module.exports = () => {
+	const a = 1;
+	const b = 2;
+	const c = 3;
+
+	someFunc();
+};
+`.trim();
+
+const excerpt = codeExcerpt(source, 5);
+//=> [
+//	{line: 2, value: ''},
+//	{line: 3, value: 'function someFunc() {}'},
+//	{line: 4, value: ''},
+//	{line: 5, value: 'module.exports = () => {'},
+//	{line: 6, value: '  const a = 1;'},
+//	{line: 7, value: '  const b = 2;'},
+//	{line: 8, value: '  const c = 3;'}
+// ]
+```
+
+
+## API
+
+### codeExcerpt(source, line, [options])
+
+#### source
+
+Type: `string`
+
+Source code.
+
+#### line
+
+Type: `number`
+
+Line number to extract excerpt for.
+
+#### options
+
+##### around
+
+Type: `number`<br>
+Default: `3`
+
+Number of surrounding lines to extract.
+
+
+## License
+
+MIT © [Vadim Demedes](https://github.com/vadimdemedes)