Add prepublish script

Author: 3y3

.npmignore

@@ -1,4 +1,5 @@
 *.log
+build/!(debug)
 node_modules
 test
 v8-debug-*.tgz

package.json

@@ -38,6 +38,7 @@
   },
   "scripts": {
     "preinstall": "node -e 'process.exit(0)'",
+    "prepublish": "node ./tools/prepublish.js",
     "install": "node-pre-gyp install --fallback-to-build",
     "rebuild": "node-pre-gyp rebuild",
     "test": "mocha --debug"

tools/prepublish.js

@@ -0,0 +1,40 @@
+if (process.env.CI) process.exit(0);
+
+var extend = require('util')._extend;
+var gyp = require('node-pre-gyp');
+
+var versions = ['0.10.0', '0.12.0', '4.0.0', '5.0.0'];
+var matrix = {
+  x64: ['win32', 'linux', 'darwin'],
+  ia32: ['win32']
+};
+
+var targets = [];
+Object.keys(matrix).forEach(function(arch) {
+  matrix[arch].forEach(function(platform) {
+    versions.forEach(function(version) {
+      targets.push({
+        target: version,
+        target_platform: platform,
+        target_arch: arch
+      });
+    });
+  });
+}, []);
+
+iterate();
+
+function iterate(err) {
+  if (err) {
+    console.log(err.message);
+    return process.exit(1);
+  }
+
+  var target = targets.pop();
+
+  if (!target) process.exit(0);
+
+  var prog = extend(new gyp.Run(), {opts: target});
+
+  prog.commands.install([], iterate);
+}