Merge async branch (#1)

Author: AndreyBelym

package.json

@@ -1,22 +1,24 @@
 {
-  "name": "log-update",
-  "version": "2.0.0",
-  "description": "Log by overwriting the previous output in the terminal. Useful for rendering progress bars, animations, etc.",
+  "name": "log-update-async-hook",
+  "version": "2.0.2",
+  "description": "log-update fork that uses async-exit-hook internally",
   "license": "MIT",
-  "repository": "sindresorhus/log-update",
+  "repository": "AndreyBelym/log-update-async-hook",
   "author": {
+    "name": "Andrey Belym",
+    "email": "belym.a.2105@gmail.com"
+  },
+  "contributors": [{
     "name": "Sindre Sorhus",
     "email": "sindresorhus@gmail.com",
     "url": "sindresorhus.com"
-  },
-  "engines": {
-    "node": ">=4"
-  },
+  }],
   "scripts": {
-    "test": "xo && node test.js"
+    "test": "node test.js"
   },
+  "main": "src/index.js",
   "files": [
-    "index.js"
+    "src"
   ],
   "keywords": [
     "log",
@@ -38,7 +40,8 @@
   ],
   "dependencies": {
     "ansi-escapes": "^2.0.0",
-    "cli-cursor": "^2.0.0",
+    "async-exit-hook": "^1.1.2",
+    "onetime": "^2.0.1",
     "wrap-ansi": "^2.1.0"
   },
   "devDependencies": {

readme.md

@@ -1,5 +1,9 @@
-# log-update [![Build Status](https://travis-ci.org/sindresorhus/log-update.svg?branch=master)](https://travis-ci.org/sindresorhus/log-update)
+# log-update-async-hook [![Build Status](https://travis-ci.org/AndreyBelym/log-update-async-hook.svg?branch=master)](https://travis-ci.org/AndreyBelym/log-update-async-hook)
 
+This is a fork of the [log-update](https://github.com/sindresorhus/log-update) by Sindre Sorhus, that uses `async-exit-hook` to restore terminal cursor state when the process terminates.
+Usage of `exit-hook` or `signal-exit` hook in the original `log-update` prevents execution of asynchronous operations on signals (`SIGTERM`, `SIGHUP`, etc.) in the code of the main application.
+So I've replaced them by `async-exit-hook`, rewritten code to allow execution on Node versions below `4.x` and bundled some dependencies into the package.
+  
 > Log by overwriting the previous output in the terminal.<br>
 > Useful for rendering progress bars, animations, etc.
 

src/cli-cursor.js

@@ -0,0 +1,39 @@
+'use strict';
+var restoreCursor = require('./restore-cursor');
+
+var hidden = false;
+
+exports.show = function (stream) {
+	var s = stream || process.stderr;
+
+	if (!s.isTTY) {
+		return;
+	}
+
+	hidden = false;
+	s.write('\u001b[?25h');
+};
+
+exports.hide = function (stream) {
+	var s = stream || process.stderr;
+
+	if (!s.isTTY) {
+		return;
+	}
+
+	restoreCursor();
+	hidden = true;
+	s.write('\u001b[?25l');
+};
+
+exports.toggle = function (force, stream) {
+	if (force !== undefined) {
+		hidden = force;
+	}
+
+	if (hidden) {
+		exports.show(stream);
+	} else {
+		exports.hide(stream);
+	}
+};

index.js renamed to src/index.js

@@ -1,31 +1,32 @@
 'use strict';
-const ansiEscapes = require('ansi-escapes');
-const cliCursor = require('cli-cursor');
-const wrapAnsi = require('wrap-ansi');
+var ansiEscapes = require('ansi-escapes');
+var wrapAnsi = require('wrap-ansi');
+var cliCursor = require('./cli-cursor');
 
-const main = stream => {
-	let prevLineCount = 0;
 
-	const render = function () {
+function main (stream) {
+	var prevLineCount = 0;
+
+	var render = function () {
 		cliCursor.hide();
-		let out = [].join.call(arguments, ' ') + '\n';
+		var out = [].join.call(arguments, ' ') + '\n';
 		out = wrapAnsi(out, process.stdout.columns || 80, {wordWrap: false});
 		stream.write(ansiEscapes.eraseLines(prevLineCount) + out);
 		prevLineCount = out.split('\n').length;
 	};
 
-	render.clear = () => {
+	render.clear = function () {
 		stream.write(ansiEscapes.eraseLines(prevLineCount));
 		prevLineCount = 0;
 	};
 
-	render.done = () => {
+	render.done = function () {
 		prevLineCount = 0;
 		cliCursor.show();
 	};
 
 	return render;
-};
+}
 
 module.exports = main(process.stdout);
 module.exports.stderr = main(process.stderr);

src/restore-cursor.js

@@ -0,0 +1,9 @@
+'use strict';
+var onetime  = require('onetime');
+var exitHook = require('async-exit-hook');
+
+module.exports = onetime(function () {
+	exitHook(function () {
+		process.stderr.write('\u001b[?25h');
+	});
+});