Source code
Revision control
Copy as Markdown
Other Tools
// Copyright 2023 the V8 project authors. All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.
/*---
esid: sec-initializepluralrules
description: Checks the order of option read.
features: [Intl.NumberFormat-v3]
includes: [compareArray.js]
---*/
let optionKeys = [
// Inside InitializePluralRules
"localeMatcher",
"type",
// Inside SetNumberFormatDigitOptions
"minimumIntegerDigits",
"minimumFractionDigits",
"maximumFractionDigits",
"minimumSignificantDigits",
"maximumSignificantDigits",
"roundingIncrement",
"roundingMode",
"roundingPriority",
"trailingZeroDisplay",
// End of SetNumberFormatDigitOptions
];
// Use getters to track the order of reading known properties.
// TODO: Should we use a Proxy to detect *unexpected* property reads?
let reads = new Array();
let options = {};
optionKeys.forEach((key) => {
Object.defineProperty(options, key, {
get() {
reads.push(key);
return undefined;
},
});
});
new Intl.PluralRules(undefined, options);
assert.compareArray(reads, optionKeys, "Intl.PluralRules options read order");
reportCompare(0, 0);