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LibJS: Handle NumberFormat's [[UseGrouping]] option for "true" / "false"
This is a normative change to the Intl NumberFormat V3 spec. See:
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3 changed files with 24 additions and 7 deletions
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@ -633,12 +633,17 @@ ThrowCompletionOr<StringOrBoolean> get_string_or_boolean_option(VM& vm, Object c
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// 6. Let value be ? ToString(value).
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auto value_string = TRY(value.to_string(vm));
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// 7. If values does not contain an element equal to value, return fallback.
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auto it = find(values.begin(), values.end(), value_string);
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if (it == values.end())
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// 7. NOTE: For historical reasons, the strings "true" and "false" are treated the same as the boolean value true.
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// 8. If value is "true" or "false", return fallback.
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if (value_string.is_one_of("true"sv, "false"sv))
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return fallback;
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// 8. Return value.
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// 9. If values does not contain an element equal to value, throw a RangeError exception.
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auto it = find(values.begin(), values.end(), value_string);
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if (it == values.end())
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return vm.throw_completion<RangeError>(ErrorType::OptionIsNotValidValue, value_string, property.as_string());
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// 10. Return value.
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return StringOrBoolean { *it };
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}
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@ -209,6 +209,12 @@ describe("errors", () => {
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}).toThrowWithMessage(RangeError, "hello! is not a valid value for option signDisplay");
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});
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test("useGrouping option is invalid", () => {
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expect(() => {
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new Intl.NumberFormat("en", { useGrouping: "hello!" });
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}).toThrowWithMessage(RangeError, "hello! is not a valid value for option useGrouping");
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});
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test("roundingPriority option is invalid", () => {
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expect(() => {
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new Intl.NumberFormat("en", { roundingPriority: "hello!" });
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@ -416,7 +422,7 @@ describe("normal behavior", () => {
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});
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test("valid useGrouping options", () => {
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["min2", "auto", "always", false, true, ""].forEach(useGrouping => {
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["min2", "auto", "always", false, true, "false", "true", ""].forEach(useGrouping => {
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expect(() => {
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new Intl.NumberFormat("en", { useGrouping: useGrouping });
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}).not.toThrow();
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@ -287,9 +287,15 @@ describe("correct behavior", () => {
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const en4 = new Intl.NumberFormat("en", { useGrouping: true });
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expect(en4.resolvedOptions().useGrouping).toBe("always");
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const en5 = new Intl.NumberFormat("en", { useGrouping: "false" });
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expect(en5.resolvedOptions().useGrouping).toBe("auto");
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const en6 = new Intl.NumberFormat("en", { useGrouping: "true" });
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expect(en6.resolvedOptions().useGrouping).toBe("auto");
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["auto", "always", "min2"].forEach(useGrouping => {
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const en5 = new Intl.NumberFormat("en", { useGrouping: useGrouping });
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expect(en5.resolvedOptions().useGrouping).toBe(useGrouping);
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const en7 = new Intl.NumberFormat("en", { useGrouping: useGrouping });
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expect(en7.resolvedOptions().useGrouping).toBe(useGrouping);
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});
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});
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