| // Copyright (C) 2019 Leo Balter. All rights reserved. |
| // This code is governed by the BSD license found in the LICENSE file. |
| |
| /*--- |
| esid: sec-Intl.DisplayNames |
| description: > |
| Throws TypeError if locales is not undefined, a string, or an array-like object. |
| info: | |
| Intl.DisplayNames ([ locales [ , options ]]) |
| |
| 1. If NewTarget is undefined, throw a TypeError exception. |
| 2. Let displayNames be ? OrdinaryCreateFromConstructor(NewTarget, "%DisplayNamesPrototype%", |
| « [[InitializedDisplayNames]], [[Locale]], [[Style]], [[Type]], [[Fallback]], [[Fields]] »). |
| 3. Let requestedLocales be ? CanonicalizeLocaleList(locales). |
| ... |
| |
| CanonicalizeLocaleList ( locales ) |
| |
| 1. If locales is undefined, then |
| a. Return a new empty List. |
| 2. Let seen be a new empty List. |
| 3. If Type(locales) is String, then |
| a. Let O be CreateArrayFromList(« locales »). |
| 4. Else, |
| a. Let O be ? ToObject(locales). |
| 5. Let len be ? ToLength(? Get(O, "length")). |
| features: [Intl.DisplayNames] |
| ---*/ |
| |
| assert.throws(TypeError, () => { |
| new Intl.DisplayNames(null); |
| }, 'null'); |
