1 files changed, 64 insertions, 0 deletions
diff --git a/build/generate-sri.mjs b/build/generate-sri.mjs
new file mode 100644
index 0000000..e2b1554
--- /dev/null
+++ b/build/generate-sri.mjs
@@ -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 2017-2023 The Bootstrap Authors
+ * Licensed under MIT (https://github.com/twbs/bootstrap/blob/main/LICENSE)
+ */
+
+import crypto from 'node:crypto'
+import fs from 'node:fs'
+import path from 'node:path'
+import { fileURLToPath } from 'node:url'
+import sh from 'shelljs'
+
+const __dirname = path.dirname(fileURLToPath(import.meta.url))
+
+sh.config.fatal = true
+
+const configFile = path.join(__dirname, '../hugo.yml')
+
+// Array of objects which holds the files to generate SRI hashes for.
+// `file` is the path from the root folder
+// `configPropertyName` is the hugo.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, configPropertyName } of files) {
+  fs.readFile(file, 'utf8', (error, data) => {
+    if (error) {
+      throw error
+    }
+
+    const algorithm = 'sha384'
+    const hash = crypto.createHash(algorithm).update(data, 'utf8').digest('base64')
+    const integrity = `${algorithm}-${hash}`
+
+    console.log(`${configPropertyName}: ${integrity}`)
+
+    sh.sed('-i', new RegExp(`^(\\s+${configPropertyName}:\\s+["'])\\S*(["'])`), `$1${integrity}$2`, configFile)
+  })
+}