Initial import from local backup (Documents-Playground/pakerpale)

node_modules/relative-time-format/modules/resolveLocale.js

@@ -0,0 +1,65 @@
+import { getLocaleData } from './LocaleDataStore';
+/**
+ * Resolves a locale to a supported one (if any).
+ * @param  {string} locale
+ * @param {Object} [options] - An object that may have the following property:
+ * @param {string} [options.localeMatcher="lookup"] - The locale matching algorithm to use. Possible values are "lookup" and "best fit". Currently only "lookup" is supported.
+ * @return {string} [locale]
+ * @example
+ * // Returns "sr"
+ * resolveLocale("sr-Cyrl-BA")
+ * // Returns `undefined`
+ * resolveLocale("xx-Latn")
+ */
+
+export default function resolveLocale(locale) {
+  var options = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : {};
+  var localeMatcher = options.localeMatcher || 'lookup';
+
+  switch (localeMatcher) {
+    case 'lookup':
+      return resolveLocaleLookup(locale);
+    // "best fit" locale matching is not supported.
+    // https://github.com/catamphetamine/relative-time-format/issues/2
+
+    case 'best fit':
+      // return resolveLocaleBestFit(locale)
+      return resolveLocaleLookup(locale);
+
+    default:
+      throw new RangeError("Invalid \"localeMatcher\" option: ".concat(localeMatcher));
+  }
+}
+/**
+ * Resolves a locale to a supported one (if any).
+ * Starts from the most specific locale and gradually
+ * falls back to less specific ones.
+ * This is a basic implementation of the "lookup" algorithm.
+ * https://tools.ietf.org/html/rfc4647#section-3.4
+ * @param  {string} locale
+ * @return {string} [locale]
+ * @example
+ * // Returns "sr"
+ * resolveLocaleLookup("sr-Cyrl-BA")
+ * // Returns `undefined`
+ * resolveLocaleLookup("xx-Latn")
+ */
+
+export function resolveLocaleLookup(locale) {
+  if (getLocaleData(locale)) {
+    return locale;
+  } // `sr-Cyrl-BA` -> `sr-Cyrl` -> `sr`.
+
+
+  var parts = locale.split('-');
+
+  while (locale.length > 1) {
+    parts.pop();
+    locale = parts.join('-');
+
+    if (getLocaleData(locale)) {
+      return locale;
+    }
+  }
+}
+//# sourceMappingURL=resolveLocale.js.map