Require Node.js 6

Author: sindresorhus

.editorconfig

@@ -7,6 +7,6 @@ charset = utf-8
 trim_trailing_whitespace = true
 insert_final_newline = true
 
-[*.{json,yml}]
-indent_size = 2
+[*.yml]
 indent_style = space
+indent_size = 2

.gitignore

@@ -1 +1,2 @@
 node_modules
+yarn.lock

.npmrc

@@ -0,0 +1 @@
+package-lock=false

.travis.yml

@@ -1,7 +1,4 @@
-sudo: false
 language: node_js
 node_js:
-  - 'stable'
   - '8'
   - '6'
-  - '4'

index.js

@@ -11,212 +11,198 @@ const osFilterObj = importLazy('os-filter-obj');
 /**
  * Initialize a new `BinWrapper`
  *
- * @param {Object} opts
+ * @param {Object} options
  * @api public
  */
-
-function BinWrapper(opts) {
-	if (!(this instanceof BinWrapper)) {
-		return new BinWrapper(opts);
-	}
-
-	this.opts = opts || {};
-
-	if (this.opts.strip <= 0) {
-		this.opts.strip = 0;
-	} else if (!this.opts.strip) {
-		this.opts.strip = 1;
+module.exports = class BinWrapper {
+	constructor(options = {}) {
+		this.options = options;
+
+		if (this.options.strip <= 0) {
+			this.options.strip = 0;
+		} else if (!this.options.strip) {
+			this.options.strip = 1;
+		}
 	}
-}
 
-module.exports = BinWrapper;
+	/**
+	 * Get or set files to download
+	 *
+	 * @param {String} src
+	 * @param {String} os
+	 * @param {String} arch
+	 * @api public
+	 */
+	src(src, os, arch) {
+		if (arguments.length === 0) {
+			return this._src;
+		}
 
-/**
- * Get or set files to download
- *
- * @param {String} src
- * @param {String} os
- * @param {String} arch
- * @api public
- */
+		this._src = this._src || [];
+		this._src.push({
+			url: src,
+			os,
+			arch
+		});
 
-BinWrapper.prototype.src = function (src, os, arch) {
-	if (arguments.length === 0) {
-		return this._src;
+		return this;
 	}
 
-	this._src = this._src || [];
-	this._src.push({
-		url: src,
-		os,
-		arch
-	});
-
-	return this;
-};
-
-/**
- * Get or set the destination
- *
- * @param {String} dest
- * @api public
- */
+	/**
+	 * Get or set the destination
+	 *
+	 * @param {String} dest
+	 * @api public
+	 */
+	dest(dest) {
+		if (arguments.length === 0) {
+			return this._dest;
+		}
 
-BinWrapper.prototype.dest = function (dest) {
-	if (arguments.length === 0) {
-		return this._dest;
+		this._dest = dest;
+		return this;
 	}
 
-	this._dest = dest;
-	return this;
-};
-
-/**
- * Get or set the binary
- *
- * @param {String} bin
- * @api public
- */
+	/**
+	 * Get or set the binary
+	 *
+	 * @param {String} bin
+	 * @api public
+	 */
+	use(bin) {
+		if (arguments.length === 0) {
+			return this._use;
+		}
 
-BinWrapper.prototype.use = function (bin) {
-	if (arguments.length === 0) {
-		return this._use;
+		this._use = bin;
+		return this;
 	}
 
-	this._use = bin;
-	return this;
-};
-
-/**
- * Get or set a semver range to test the binary against
- *
- * @param {String} range
- * @api public
- */
+	/**
+	 * Get or set a semver range to test the binary against
+	 *
+	 * @param {String} range
+	 * @api public
+	 */
+	version(range) {
+		if (arguments.length === 0) {
+			return this._version;
+		}
 
-BinWrapper.prototype.version = function (range) {
-	if (arguments.length === 0) {
-		return this._version;
+		this._version = range;
+		return this;
 	}
 
-	this._version = range;
-	return this;
-};
-
-/**
- * Get path to the binary
- *
- * @api public
- */
-
-BinWrapper.prototype.path = function () {
-	return path.join(this.dest(), this.use());
-};
-
-/**
- * Run
- *
- * @param {Array} cmd
- * @param {Function} cb
- * @api public
- */
-
-BinWrapper.prototype.run = function (cmd, cb) {
-	if (typeof cmd === 'function' && !cb) {
-		cb = cmd;
-		cmd = ['--version'];
+	/**
+	 * Get path to the binary
+	 *
+	 * @api public
+	 */
+	path() {
+		return path.join(this.dest(), this.use());
 	}
 
-	this.findExisting(err => {
-		if (err) {
-			cb(err);
-			return;
-		}
-
-		if (this.opts.skipCheck) {
-			cb();
-			return;
+	/**
+	 * Run
+	 *
+	 * @param {Array} cmd
+	 * @param {Function} cb
+	 * @api public
+	 */
+	run(cmd, cb) {
+		if (typeof cmd === 'function' && !cb) {
+			cb = cmd;
+			cmd = ['--version'];
 		}
 
-		this.runCheck(cmd, cb);
-	});
-};
-
-/**
- * Run binary check
- *
- * @param {Array} cmd
- * @param {Function} cb
- * @api private
- */
+		this.findExisting(err => {
+			if (err) {
+				cb(err);
+				return;
+			}
 
-BinWrapper.prototype.runCheck = function (cmd, cb) {
-	binCheck()(this.path(), cmd, (err, works) => {
-		if (err) {
-			cb(err);
-			return;
-		}
+			if (this.options.skipCheck) {
+				cb();
+				return;
+			}
 
-		if (!works) {
-			cb(new Error('The `' + this.path() + '` binary doesn\'t seem to work correctly'));
-			return;
-		}
+			this.runCheck(cmd, cb);
+		});
+	}
 
-		if (this.version()) {
-			binVersionCheck()(this.path(), this.version(), cb);
-			return;
-		}
+	/**
+	 * Run binary check
+	 *
+	 * @param {Array} cmd
+	 * @param {Function} cb
+	 * @api private
+	 */
+	runCheck(cmd, cb) {
+		binCheck()(this.path(), cmd, (err, works) => {
+			if (err) {
+				cb(err);
+				return;
+			}
+
+			if (!works) {
+				cb(new Error(`The \`${this.path()}\` binary doesn't seem to work correctly`));
+				return;
+			}
+
+			if (this.version()) {
+				binVersionCheck()(this.path(), this.version(), cb);
+				return;
+			}
 
-		cb();
-	});
-};
+			cb();
+		});
+	}
 
-/**
- * Find existing files
- *
- * @param {Function} cb
- * @api private
- */
+	/**
+	 * Find existing files
+	 *
+	 * @param {Function} cb
+	 * @api private
+	 */
+	findExisting(cb) {
+		fs.stat(this.path(), err => {
+			if (err && err.code === 'ENOENT') {
+				this.download(cb);
+				return;
+			}
+
+			if (err) {
+				cb(err);
+				return;
+			}
 
-BinWrapper.prototype.findExisting = function (cb) {
-	fs.stat(this.path(), err => {
-		if (err && err.code === 'ENOENT') {
-			this.download(cb);
-			return;
-		}
+			cb();
+		});
+	}
 
-		if (err) {
-			cb(err);
+	/**
+	 * Download files
+	 *
+	 * @param {Function} cb
+	 * @api private
+	 */
+	download(cb) {
+		const files = osFilterObj()(this.src());
+		const download = new Download()({
+			extract: true,
+			mode: '755',
+			strip: this.options.strip
+		});
+
+		if (files.length === 0) {
+			cb(new Error('No binary found matching your system. It\'s probably not supported.'));
 			return;
 		}
 
-		cb();
-	});
-};
-
-/**
- * Download files
- *
- * @param {Function} cb
- * @api private
- */
+		files.forEach(file => download.get(file.url));
 
-BinWrapper.prototype.download = function (cb) {
-	const files = osFilterObj()(this.src());
-	const download = new Download()({
-		extract: true,
-		mode: '755',
-		strip: this.opts.strip
-	});
-
-	if (files.length === 0) {
-		cb(new Error('No binary found matching your system. It\'s probably not supported.'));
-		return;
+		download
+			.dest(this.dest())
+			.run(cb);
 	}
-
-	files.forEach(file => download.get(file.url));
-
-	download
-		.dest(this.dest())
-		.run(cb);
 };