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// |reftest| skip-if(!this.hasOwnProperty("Intl"))
// Unicode BCP 47 locale identifiers don't support extlang subtags.
const invalid = [
// Two letter language code followed by extlang subtags.
"en-abc",
"en-abc-def",
"en-abc-def-ghi",
// Three letter language code followed by extlang subtags.
"und-abc",
"und-abc-def",
"und-abc-def-ghi",
];
for (let locale of invalid) {
assertThrowsInstanceOf(() => Intl.getCanonicalLocales(locale), RangeError);
}
if (typeof reportCompare === "function")
reportCompare(true, true);