chore(clean-shrinkwrap): add a utility to clean up the shrinkwrap file

This is to deal with npm/npm#3581

See the previous commit for more info.

Closes #6672

Author: petebacondarwin

npm-shrinkwrap.json

@@ -54,7 +54,8 @@
     "dgeni-packages": "^0.7.0",
     "gulp-jshint": "~1.4.2",
     "jshint-stylish": "~0.1.5",
-    "node-html-encoder": "0.0.2"
+    "node-html-encoder": "0.0.2",
+    "sorted-object": "^1.0.0"
   },
   "licenses": [
     {

package.json

@@ -0,0 +1,45 @@
+#!/usr/bin/env node
+
+/**
+ * this script is just a temporary solution to deal with the issue of npm outputting the npm
+ * shrinkwrap file in an unstable manner.
+ *
+ * See: https://github.com/npm/npm/issues/3581
+ */
+
+var _ = require('lodash');
+var sorted = require('sorted-object');
+var fs = require('fs');
+
+
+function cleanModule(module, name) {
+
+  // keep `from` and `resolve` properties for git dependencies, delete otherwise
+  if (!(module.resolved && module.resolved.match(/^git:\/\//))) {
+    delete module.from;
+    delete module.resolved;
+  }
+
+  if (name === 'chokidar') {
+    if (module.version === '0.8.1') {
+      delete module.dependencies;
+    } else {
+      throw new Error("Unfamiliar chokidar version (v" + module.version +
+          ") , please check status of https://github.com/paulmillr/chokidar/pull/106");
+    }
+  }
+
+  _.forEach(module.dependencies, function(mod, name) {
+    cleanModule(mod, name);
+  });
+}
+
+
+console.log('Reading npm-shrinkwrap.json');
+var shrinkwrap = require('./../npm-shrinkwrap.json');
+
+console.log('Cleaning shrinkwrap object');
+cleanModule(shrinkwrap, shrinkwrap.name);
+
+console.log('Writing cleaned npm-shrinkwrap.json');
+fs.writeFileSync('./npm-shrinkwrap.json', JSON.stringify(sorted(shrinkwrap), null, 2) + "\n");