1 files changed, 64 insertions, 0 deletions
diff --git a/build/generate-sri.js b/build/generate-sri.js
new file mode 100644
index 0000000..ef1b39f
--- /dev/null
+++ b/build/generate-sri.js
@@ -0,0 +1,64 @@
+#!/usr/bin/env node
+
+/*!
+ * 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 2017-2022 The Bootstrap Authors
+ * Copyright 2017-2022 Twitter, Inc.
+ * Licensed under MIT (https://github.com/twbs/bootstrap/blob/main/LICENSE)
+ */
+
+'use strict'
+
+const crypto = require('node:crypto')
+const fs = require('node:fs')
+const path = require('node:path')
+const sh = require('shelljs')
+
+sh.config.fatal = true
+
+const 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
+const files = [
+  {
+    file: 'dist/css/bootstrap.min.css',
+    configPropertyName: 'css_hash'
+  },
+  {
+    file: 'dist/css/bootstrap.rtl.min.css',
+    configPropertyName: 'css_rtl_hash'
+  },
+  {
+    file: 'dist/js/bootstrap.min.js',
+    configPropertyName: 'js_hash'
+  },
+  {
+    file: 'dist/js/bootstrap.bundle.min.js',
+    configPropertyName: 'js_bundle_hash'
+  },
+  {
+    file: 'node_modules/@popperjs/core/dist/umd/popper.min.js',
+    configPropertyName: 'popper_hash'
+  }
+]
+
+for (const file of files) {
+  fs.readFile(file.file, 'utf8', (error, data) => {
+    if (error) {
+      throw error
+    }
+
+    const algo = 'sha384'
+    const hash = crypto.createHash(algo).update(data, 'utf8').digest('base64')
+    const integrity = `${algo}-${hash}`
+
+    console.log(`${file.configPropertyName}: ${integrity}`)
+
+    sh.sed('-i', new RegExp(`^(\\s+${file.configPropertyName}:\\s+["'])\\S*(["'])`), `$1${integrity}$2`, configFile)
+  })
+}