first mockup in go

static/bower_components/bootstrap/grunt/generate-sri.js

@@ -0,0 +1,62 @@
+#!/usr/bin/env node
+
+'use strict';
+
+/*!
+ * Script to generate SRI hashes for use in our docs.
+ * Remember to use the same vendor files as the CDN ones,
+ * otherwise the hashes won't match!
+ *
+ * Copyright 2017-2019 The Bootstrap Authors
+ * Copyright 2017-2019 Twitter, Inc.
+ * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
+ */
+
+var crypto = require('crypto');
+var fs = require('fs');
+var path = require('path');
+var replace = require('replace-in-file');
+
+var configFile = path.join(__dirname, '../_config.yml');
+
+// Array of objects which holds the files to generate SRI hashes for.
+// `file` is the path from the root folder
+// `configPropertyName` is the _config.yml variable's name of the file
+var files = [
+  {
+    file: 'dist/css/bootstrap.min.css',
+    configPropertyName: 'css_hash'
+  },
+  {
+    file: 'dist/css/bootstrap-theme.min.css',
+    configPropertyName: 'css_theme_hash'
+  },
+  {
+    file: 'dist/js/bootstrap.min.js',
+    configPropertyName: 'js_hash'
+  }
+];
+
+files.forEach(function (file) {
+  fs.readFile(file.file, 'utf8', function (err, data) {
+    if (err) {
+      throw err;
+    }
+
+    var algo = 'sha384';
+    var hash = crypto.createHash(algo).update(data, 'utf8').digest('base64');
+    var integrity = algo + '-' + hash;
+
+    console.log(file.configPropertyName + ': ' + integrity);
+
+    try {
+      replace.sync({
+        files: configFile,
+        from: new RegExp('(\\s' + file.configPropertyName + ':\\s+"|\')(\\S+)("|\')'),
+        to: '$1' + integrity + '$3'
+      });
+    } catch (error) {
+      console.error('Error occurred:', error);
+    }
+  });
+});