Init

node_modules/luxon/src/impl/zoneUtil.js

@@ -0,0 +1,34 @@
+/**
+ * @private
+ */
+
+import Zone from "../zone.js";
+import IANAZone from "../zones/IANAZone.js";
+import FixedOffsetZone from "../zones/fixedOffsetZone.js";
+import InvalidZone from "../zones/invalidZone.js";
+
+import { isUndefined, isString, isNumber } from "./util.js";
+import SystemZone from "../zones/systemZone.js";
+
+export function normalizeZone(input, defaultZone) {
+  let offset;
+  if (isUndefined(input) || input === null) {
+    return defaultZone;
+  } else if (input instanceof Zone) {
+    return input;
+  } else if (isString(input)) {
+    const lowered = input.toLowerCase();
+    if (lowered === "default") return defaultZone;
+    else if (lowered === "local" || lowered === "system") return SystemZone.instance;
+    else if (lowered === "utc" || lowered === "gmt") return FixedOffsetZone.utcInstance;
+    else return FixedOffsetZone.parseSpecifier(lowered) || IANAZone.create(input);
+  } else if (isNumber(input)) {
+    return FixedOffsetZone.instance(input);
+  } else if (typeof input === "object" && input.offset && typeof input.offset === "number") {
+    // This is dumb, but the instanceof check above doesn't seem to really work
+    // so we're duck checking it
+    return input;
+  } else {
+    return new InvalidZone(input);
+  }
+}