feat(index-BS4): added script for creation demo/src/index-BS4.html file

package.json

@@ -17,6 +17,7 @@
     "build": "ngm build -p src",
     "start": "ng serve",
     "pretest": "run-s build link",
+    "generate-bs4": "node scripts/generate-bs4.js",
     "test": "ng test --watch false",
     "preversion": "npm test",
     "wm-update": "webdriver-manager update",

scripts/generate-bs4.js

@@ -0,0 +1,52 @@
+const fs = require('fs');
+
+const files = {
+  initial: 'demo/src/index.html',
+  generated: 'demo/src/index-bs4.html'
+};
+
+const toReplace = [
+  {
+    from: '<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap.min.css">',
+    to: '<link href="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0-alpha.5/css/bootstrap.min.css" rel="stylesheet">'
+  }, {
+    from: '<script src="assets/js/prettify.min.js"></script>',
+    to: '<script src="assets/js/prettify.min.js"></script>\r\n  <!-- Enable bootstrap 4 theme -->\r\n  <script>window.__theme = \'bs4\';</script>'
+  }
+];
+
+fs.readFile(files.initial, 'utf-8', (err, file) => {
+  if (err) {
+    console.error(err);
+    return process.exit(1);
+  }
+
+  if (file.length === 0) {
+    console.error('File is empty');
+    return process.exit(1);
+  }
+
+  toReplace.forEach(pair => {
+    file = file.replace(pair.from, pair.to);
+  });
+
+  fs.open(files.generated, 'w', (err, newFileDescriptor) => {
+    if (err) {
+      console.error(err);
+      return process.exit(1);
+    }
+
+    if (!newFileDescriptor) {
+      console.error('File creation error');
+      return process.exit(1);
+    }
+
+    fs.writeFile(newFileDescriptor, file, 'utf8', (err) => {
+      if (err) {
+        console.error(err);
+        return process.exit(1);
+      }
+      console.log('File successfully created');
+    })
+  });
+});