Add initial 11ty website structure

website/node_modules/bcp-47/lib/stringify.js

@@ -0,0 +1,53 @@
+/**
+ * @import {Schema} from './parse.js'
+ */
+
+/**
+ * Compile a language schema to a BCP 47 language tag.
+ *
+ * @param {Partial<Schema> | null | undefined} [schema]
+ *   Schema.
+ * @returns {string}
+ *   BCP 47 tag.
+ */
+export function stringify(schema) {
+  const info = schema || {}
+  /** @type {Array<string>} */
+  let result = []
+
+  if (info.irregular) {
+    return info.irregular
+  }
+
+  if (info.regular) {
+    return info.regular
+  }
+
+  if (info.language) {
+    // eslint-disable-next-line unicorn/prefer-spread
+    result = result.concat(
+      info.language,
+      info.extendedLanguageSubtags || [],
+      info.script || [],
+      info.region || [],
+      info.variants || []
+    )
+
+    const values = info.extensions || []
+    let index = -1
+
+    while (++index < values.length) {
+      const value = values[index]
+
+      if (value.singleton && value.extensions && value.extensions.length > 0) {
+        result.push(value.singleton, ...value.extensions)
+      }
+    }
+  }
+
+  if (info.privateuse && info.privateuse.length > 0) {
+    result.push('x', ...info.privateuse)
+  }
+
+  return result.join('-')
+}