adding environment variable to be check to prevent electron from inst…

…alling (#4)

.gitignore

@@ -0,0 +1,29 @@
+# IntelliJ project files
+.idea
+*.iml
+out
+gen### Node template
+# Logs
+logs
+*.log
+npm-debug.log*
+
+# Runtime data
+pids
+*.pid
+*.seed
+
+# Dependency directories
+node_modules
+jspm_packages
+
+# Optional npm cache directory
+.npm
+
+# Optional REPL history
+.node_repl_history
+
+.DS_Store
+temp/
+/build/
+build

cli.js

@@ -1,10 +1,10 @@
 #!/usr/bin/env node
 
-var electron = require('./')
+var electron = require("./");
 
-var proc = require('child_process')
+var proc = require("child_process");
 
-var child = proc.spawn(electron, process.argv.slice(2), {stdio: 'inherit'})
-child.on('close', function (code) {
-  process.exit(code)
-})
+var child = proc.spawn(electron, process.argv.slice(2), {stdio: "inherit"});
+child.on("close", function (code) {
+  process.exit(code);
+});

index.js

@@ -1,10 +1,10 @@
-var fs = require('fs')
-var path = require('path')
+var fs = require("fs");
+var path = require("path");
 
-var pathFile = path.join(__dirname, 'path.txt')
+var pathFile = path.join(__dirname, "path.txt");
 
 if (fs.existsSync(pathFile)) {
-  module.exports = path.join(__dirname, fs.readFileSync(pathFile, 'utf-8'))
+  module.exports = path.join(__dirname, fs.readFileSync(pathFile, "utf-8"));
 } else {
-  throw new Error('Electron failed to install correctly, please delete node_modules/electron and try installing again')
+  throw new Error("Electron failed to install correctly, please delete node_modules/electron and try installing again");
 }

install.js

@@ -1,65 +1,75 @@
 #!/usr/bin/env node
 
 // maintainer note - x.y.z-ab version in package.json -> x.y.z
-var version = require('./package').version
+var version = require("./package").version;
 
-var fs = require('fs')
-var os = require('os')
-var path = require('path')
-var extract = require('extract-zip')
-var download = require('electron-download')
+var fs = require("fs");
+var os = require("os");
+var path = require("path");
+var extract = require("extract-zip");
+var download = require("electron-download");
 
-var installedVersion = null
+var installedVersion = null;
 try {
-  installedVersion = fs.readFileSync(path.join(__dirname, 'dist', 'version'), 'utf-8').replace(/^v/, '')
+  installedVersion = fs.readFileSync(path.join(__dirname, "dist", "version"), "utf-8").replace(/^v/, "");
 } catch (ignored) {
   // do nothing
 }
 
-var platformPath = getPlatformPath()
+if (process.env.DONT_INSTALL_ELECTRON == "1") {
+  process.exit(0);
+}
+
+var platformPath = getPlatformPath();
 
 if (installedVersion === version && fs.existsSync(path.join(__dirname, platformPath))) {
-  process.exit(0)
+  process.exit(0);
 }
 
 // downloads if not cached
 download({
-  mirror: 'https://github.com/castlabs/electron-releases/releases/download/v',
+  mirror: "https://github.com/castlabs/electron-releases/releases/download/v",
   cache: process.env.electron_config_cache,
   version: version,
   platform: process.env.npm_config_platform,
   arch: process.env.npm_config_arch,
-  strictSSL: process.env.npm_config_strict_ssl === 'true',
-  force: process.env.force_no_cache === 'true',
-  quiet: ['info', 'verbose', 'silly', 'http'].indexOf(process.env.npm_config_loglevel) === -1
-}, extractFile)
+  strictSSL: process.env.npm_config_strict_ssl === "true",
+  force: process.env.force_no_cache === "true",
+  quiet: ["info", "verbose", "silly", "http"].indexOf(process.env.npm_config_loglevel) === -1
+}, extractFile);
 
 // unzips and makes path.txt point at the correct executable
 function extractFile (err, zipPath) {
-  if (err) return onerror(err)
-  extract(zipPath, {dir: path.join(__dirname, 'dist')}, function (err) {
-    if (err) return onerror(err)
-    fs.writeFile(path.join(__dirname, 'path.txt'), platformPath, function (err) {
-      if (err) return onerror(err)
-    })
-  })
+  if (err) {
+    return onerror(err);
+  }
+  extract(zipPath, {dir: path.join(__dirname, "dist")}, function (err) {
+    if (err) {
+      return onerror(err);
+    }
+    fs.writeFile(path.join(__dirname, "path.txt"), platformPath, function (err) {
+      if (err) {
+        return onerror(err);
+      }
+    });
+  });
 }
 
 function onerror (err) {
-  throw err
+  throw err;
 }
 
 function getPlatformPath () {
-  var platform = process.env.npm_config_platform || os.platform()
+  var platform = process.env.npm_config_platform || os.platform();
 
   switch (platform) {
-    case 'darwin':
-      return 'dist/Electron.app/Contents/MacOS/Electron'
-    case 'freebsd':
-    case 'linux':
-      return 'dist/electron'
-    case 'win32':
-      return 'dist/electron.exe'
+    case "darwin":
+      return "dist/Electron.app/Contents/MacOS/Electron";
+    case "freebsd":
+    case "linux":
+      return "dist/electron";
+    case "win32":
+      return "dist/electron.exe";
     default:
       throw new Error('Electron builds are not available on platform: ' + platform)
   }