Revert "Add pluralrules to JS Intl"

This reverts commit 7686bceecff17f91758c8c6547a78e71ff3a8c38.

1 files changed, 134 insertions, 492 deletions

diff --git a/js/src/builtin/Intl.js b/js/src/builtin/Intl.js
index 37c87365b3..493062c1c6 100644
--- a/js/src/builtin/Intl.js
+++ b/js/src/builtin/Intl.js
@@ -9,8 +9,7 @@
          JSMSG_INVALID_OPTION_VALUE: false, JSMSG_INVALID_DIGITS_VALUE: false,
          JSMSG_INTL_OBJECT_REINITED: false, JSMSG_INVALID_CURRENCY_CODE: false,
          JSMSG_UNDEFINED_CURRENCY: false, JSMSG_INVALID_TIME_ZONE: false,
-         JSMSG_DATE_NOT_FINITE: false, JSMSG_INVALID_KEYS_TYPE: false,
-         JSMSG_INVALID_KEY: false,
+         JSMSG_DATE_NOT_FINITE: false,
          intl_Collator_availableLocales: false,
          intl_availableCollations: false,
          intl_CompareStrings: false,
@@ -21,9 +20,6 @@
          intl_availableCalendars: false,
          intl_patternForSkeleton: false,
          intl_FormatDateTime: false,
-         intl_SelectPluralRule: false,
-         intl_GetPluralCategories: false,
-         intl_GetCalendarInfo: false,
 */
 
 /*
@@ -436,7 +432,7 @@ function CanonicalizeLanguageTag(locale) {
         subtags[i] = subtag;
         i++;
     }
-    var normal = ArrayJoinRange(subtags, "-", 0, i);
+    var normal = callFunction(std_Array_join, callFunction(std_Array_slice, subtags, 0, i), "-");
 
     // Extension sequences are sorted by their singleton characters.
     // "u-ca-chinese-t-zh-latn" -> "t-zh-latn-u-ca-chinese"
@@ -446,7 +442,7 @@ function CanonicalizeLanguageTag(locale) {
         i++;
         while (i < subtags.length && subtags[i].length > 1)
             i++;
-        var extension = ArrayJoinRange(subtags, "-", extensionStart, i);
+        var extension = callFunction(std_Array_join, callFunction(std_Array_slice, subtags, extensionStart, i), "-");
         callFunction(std_Array_push, extensions, extension);
     }
     callFunction(std_Array_sort, extensions);
@@ -454,7 +450,7 @@ function CanonicalizeLanguageTag(locale) {
     // Private use sequences are left as is. "x-private"
     var privateUse = "";
     if (i < subtags.length)
-        privateUse = ArrayJoinRange(subtags, "-", i);
+        privateUse = callFunction(std_Array_join, callFunction(std_Array_slice, subtags, i), "-");
 
     // Put everything back together.
     var canonical = normal;
@@ -471,24 +467,6 @@ function CanonicalizeLanguageTag(locale) {
     return canonical;
 }
 
-/**
- * Joins the array elements in the given range with the supplied separator.
- */
-function ArrayJoinRange(array, separator, from, to = array.length) {
-    assert(typeof separator === "string", "|separator| is a string value");
-    assert(typeof from === "number", "|from| is a number value");
-    assert(typeof to === "number", "|to| is a number value");
-    assert(0 <= from && from <= to && to <= array.length, "|from| and |to| form a valid range");
-
-    if (from === to)
-        return "";
-
-    var result = array[from];
-    for (var i = from + 1; i < to; i++) {
-        result += separator + array[i];
-    }
-    return result;
-}
 
 function localeContainsNoUnicodeExtensions(locale) {
     // No "-u-", no possible Unicode extension.
@@ -860,7 +838,6 @@ function BestAvailableLocaleIgnoringDefault(availableLocales, locale) {
     return BestAvailableLocaleHelper(availableLocales, locale, false);
 }
 
-var noRelevantExtensionKeys = [];
 
 /**
  * Compares a BCP 47 language priority list against the set of locales in
@@ -1188,10 +1165,9 @@ function GetOption(options, property, type, values, fallback) {
  * Spec: ECMAScript Internationalization API Specification, 9.2.10.
  */
 function GetNumberOption(options, property, minimum, maximum, fallback) {
-    assert(typeof minimum === "number" && (minimum | 0) === minimum, "GetNumberOption");
-    assert(typeof maximum === "number" && (maximum | 0) === maximum, "GetNumberOption");
-    assert(typeof fallback === "number" && (fallback | 0) === fallback, "GetNumberOption");
-    assert(minimum <= fallback && fallback <= maximum, "GetNumberOption");
+    assert(typeof minimum === "number", "GetNumberOption");
+    assert(typeof maximum === "number", "GetNumberOption");
+    assert(fallback === undefined || (fallback >= minimum && fallback <= maximum), "GetNumberOption");
 
     // Step 1.
     var value = options[property];
@@ -1201,10 +1177,7 @@ function GetNumberOption(options, property, minimum, maximum, fallback) {
         value = ToNumber(value);
         if (Number_isNaN(value) || value < minimum || value > maximum)
             ThrowRangeError(JSMSG_INVALID_DIGITS_VALUE, value);
-
-        // Apply bitwise-or to convert -0 to +0 per ES2017, 5.2 and to ensure
-        // the result is an int32 value.
-        return std_Math_floor(value) | 0;
+        return std_Math_floor(value);
     }
 
     // Step 3.
@@ -1278,9 +1251,7 @@ function initializeIntlObject(obj) {
 function setLazyData(internals, type, lazyData)
 {
     assert(internals.type === "partial", "can't set lazy data for anything but a newborn");
-    assert(type === "Collator" || type === "DateTimeFormat" ||
-           type == "NumberFormat" || type === "PluralRules",
-           "bad type");
+    assert(type === "Collator" || type === "DateTimeFormat" || type == "NumberFormat", "bad type");
     assert(IsObject(lazyData), "non-object lazy data");
 
     // Set in reverse order so that the .type change is a barrier.
@@ -1330,9 +1301,7 @@ function isInitializedIntlObject(obj) {
     if (IsObject(internals)) {
         assert(callFunction(std_Object_hasOwnProperty, internals, "type"), "missing type");
         var type = internals.type;
-        assert(type === "partial" || type === "Collator" ||
-               type === "DateTimeFormat" || type === "NumberFormat" || type === "PluralRules",
-               "unexpected type");
+        assert(type === "partial" || type === "Collator" || type === "DateTimeFormat" || type === "NumberFormat", "unexpected type");
         assert(callFunction(std_Object_hasOwnProperty, internals, "lazyData"), "missing lazyData");
         assert(callFunction(std_Object_hasOwnProperty, internals, "internalProps"), "missing internalProps");
     } else {
@@ -1389,8 +1358,6 @@ function getInternals(obj)
         internalProps = resolveCollatorInternals(lazyData)
     else if (type === "DateTimeFormat")
         internalProps = resolveDateTimeFormatInternals(lazyData)
-    else if (type === "PluralRules")
-        internalProps = resolvePluralRulesInternals(lazyData)
     else
         internalProps = resolveNumberFormatInternals(lazyData);
     setInternalProperties(internals, internalProps);
@@ -1722,7 +1689,6 @@ function Intl_Collator_compare_get() {
     // Step 2.
     return internals.boundCompare;
 }
-_SetCanonicalName(Intl_Collator_compare_get, "get compare");
 
 
 /**
@@ -1791,37 +1757,45 @@ function resolveNumberFormatInternals(lazyNumberFormatData) {
     // Step 6.
     var opt = lazyNumberFormatData.opt;
 
+    // Compute effective locale.
+    // Step 9.
     var NumberFormat = numberFormatInternalProperties;
 
-    // Step 9.
+    // Step 10.
     var localeData = NumberFormat.localeData;
 
-    // Step 10.
+    // Step 11.
     var r = ResolveLocale(callFunction(NumberFormat.availableLocales, NumberFormat),
                           lazyNumberFormatData.requestedLocales,
                           lazyNumberFormatData.opt,
                           NumberFormat.relevantExtensionKeys,
                           localeData);
 
-    // Steps 11-12.  (Step 13 is not relevant to our implementation.)
+    // Steps 12-13.  (Step 14 is not relevant to our implementation.)
     internalProps.locale = r.locale;
     internalProps.numberingSystem = r.nu;
 
     // Compute formatting options.
-    // Step 15.
-    var style = lazyNumberFormatData.style;
-    internalProps.style = style;
+    // Step 16.
+    var s = lazyNumberFormatData.style;
+    internalProps.style = s;
 
-    // Steps 19, 21.
-    if (style === "currency") {
+    // Steps 20, 22.
+    if (s === "currency") {
         internalProps.currency = lazyNumberFormatData.currency;
         internalProps.currencyDisplay = lazyNumberFormatData.currencyDisplay;
     }
 
+    // Step 24.
     internalProps.minimumIntegerDigits = lazyNumberFormatData.minimumIntegerDigits;
+
+    // Steps 27.
     internalProps.minimumFractionDigits = lazyNumberFormatData.minimumFractionDigits;
+
+    // Step 30.
     internalProps.maximumFractionDigits = lazyNumberFormatData.maximumFractionDigits;
 
+    // Step 33.
     if ("minimumSignificantDigits" in lazyNumberFormatData) {
         // Note: Intl.NumberFormat.prototype.resolvedOptions() exposes the
         // actual presence (versus undefined-ness) of these properties.
@@ -1830,10 +1804,10 @@ function resolveNumberFormatInternals(lazyNumberFormatData) {
         internalProps.maximumSignificantDigits = lazyNumberFormatData.maximumSignificantDigits;
     }
 
-    // Step 27.
+    // Step 35.
     internalProps.useGrouping = lazyNumberFormatData.useGrouping;
 
-    // Step 34.
+    // Step 42.
     internalProps.boundFormat = undefined;
 
     // The caller is responsible for associating |internalProps| with the right
@@ -1861,44 +1835,6 @@ function getNumberFormatInternals(obj, methodName) {
     return internalProps;
 }
 
-/**
- * Applies digit options used for number formatting onto the intl object.
- *
- * Spec: ECMAScript Internationalization API Specification, 11.1.1.
- */
-function SetNumberFormatDigitOptions(lazyData, options, mnfdDefault, mxfdDefault) {
-    // We skip Step 1 because we set the properties on a lazyData object.
-
-    // Step 2-3.
-    assert(IsObject(options), "SetNumberFormatDigitOptions");
-    assert(typeof mnfdDefault === "number", "SetNumberFormatDigitOptions");
-    assert(typeof mxfdDefault === "number", "SetNumberFormatDigitOptions");
-    assert(mnfdDefault <= mxfdDefault, "SetNumberFormatDigitOptions");
-
-    // Steps 4-6.
-    const mnid = GetNumberOption(options, "minimumIntegerDigits", 1, 21, 1);
-    const mnfd = GetNumberOption(options, "minimumFractionDigits", 0, 20, mnfdDefault);
-    const mxfdActualDefault = std_Math_max(mnfd, mxfdDefault);
-    const mxfd = GetNumberOption(options, "maximumFractionDigits", mnfd, 20, mxfdActualDefault);
-
-    // Steps 7-8.
-    let mnsd = options.minimumSignificantDigits;
-    let mxsd = options.maximumSignificantDigits;
-
-    // Steps 9-11.
-    lazyData.minimumIntegerDigits = mnid;
-    lazyData.minimumFractionDigits = mnfd;
-    lazyData.maximumFractionDigits = mxfd;
-
-    // Step 12.
-    if (mnsd !== undefined || mxsd !== undefined) {
-        mnsd = GetNumberOption(options, "minimumSignificantDigits", 1, 21, 1);
-        mxsd = GetNumberOption(options, "maximumSignificantDigits", mnsd, 21, 21);
-        lazyData.minimumSignificantDigits = mnsd;
-        lazyData.maximumSignificantDigits = mxsd;
-    }
-}
-
 
 /**
  * Initializes an object as a NumberFormat.
@@ -1948,7 +1884,7 @@ function InitializeNumberFormat(numberFormat, locales, options) {
     //   }
     //
     // Note that lazy data is only installed as a final step of initialization,
-    // so every NumberFormat lazy data object has *all* these properties, never a
+    // so every Collator lazy data object has *all* these properties, never a
     // subset of them.
     var lazyNumberFormatData = std_Object_create(null);
 
@@ -1978,46 +1914,67 @@ function InitializeNumberFormat(numberFormat, locales, options) {
     opt.localeMatcher = matcher;
 
     // Compute formatting options.
-    // Step 14.
-    var style = GetOption(options, "style", "string", ["decimal", "percent", "currency"], "decimal");
-    lazyNumberFormatData.style = style;
+    // Step 15.
+    var s = GetOption(options, "style", "string", ["decimal", "percent", "currency"], "decimal");
+    lazyNumberFormatData.style = s;
 
-    // Steps 16-19.
+    // Steps 17-20.
     var c = GetOption(options, "currency", "string", undefined, undefined);
     if (c !== undefined && !IsWellFormedCurrencyCode(c))
         ThrowRangeError(JSMSG_INVALID_CURRENCY_CODE, c);
     var cDigits;
-    if (style === "currency") {
+    if (s === "currency") {
         if (c === undefined)
             ThrowTypeError(JSMSG_UNDEFINED_CURRENCY);
 
-        // Steps 19.a-c.
+        // Steps 20.a-c.
         c = toASCIIUpperCase(c);
         lazyNumberFormatData.currency = c;
         cDigits = CurrencyDigits(c);
     }
 
-    // Step 20.
+    // Step 21.
     var cd = GetOption(options, "currencyDisplay", "string", ["code", "symbol", "name"], "symbol");
-    if (style === "currency")
+    if (s === "currency")
         lazyNumberFormatData.currencyDisplay = cd;
 
-    // Steps 22-25.
-    var mnfdDefault, mxfdDefault;
-    if (style === "currency") {
-        mnfdDefault = cDigits;
-        mxfdDefault = cDigits;
-    } else {
-        mnfdDefault = 0;
-        mxfdDefault = style === "percent" ? 0 : 3;
+    // Step 23.
+    var mnid = GetNumberOption(options, "minimumIntegerDigits", 1, 21, 1);
+    lazyNumberFormatData.minimumIntegerDigits = mnid;
+
+    // Steps 25-26.
+    var mnfdDefault = (s === "currency") ? cDigits : 0;
+    var mnfd = GetNumberOption(options, "minimumFractionDigits", 0, 20, mnfdDefault);
+    lazyNumberFormatData.minimumFractionDigits = mnfd;
+
+    // Steps 28-29.
+    var mxfdDefault;
+    if (s === "currency")
+        mxfdDefault = std_Math_max(mnfd, cDigits);
+    else if (s === "percent")
+        mxfdDefault = std_Math_max(mnfd, 0);
+    else
+        mxfdDefault = std_Math_max(mnfd, 3);
+    var mxfd = GetNumberOption(options, "maximumFractionDigits", mnfd, 20, mxfdDefault);
+    lazyNumberFormatData.maximumFractionDigits = mxfd;
+
+    // Steps 31-32.
+    var mnsd = options.minimumSignificantDigits;
+    var mxsd = options.maximumSignificantDigits;
+
+    // Step 33.
+    if (mnsd !== undefined || mxsd !== undefined) {
+        mnsd = GetNumberOption(options, "minimumSignificantDigits", 1, 21, 1);
+        mxsd = GetNumberOption(options, "maximumSignificantDigits", mnsd, 21, 21);
+        lazyNumberFormatData.minimumSignificantDigits = mnsd;
+        lazyNumberFormatData.maximumSignificantDigits = mxsd;
     }
-    SetNumberFormatDigitOptions(lazyNumberFormatData, options, mnfdDefault, mxfdDefault);
 
-    // Steps 26.
+    // Step 34.
     var g = GetOption(options, "useGrouping", "boolean", undefined, true);
     lazyNumberFormatData.useGrouping = g;
 
-    // Steps 35-36.
+    // Step 43.
     //
     // We've done everything that must be done now: mark the lazy data as fully
     // computed and install it.
@@ -2026,6 +1983,43 @@ function InitializeNumberFormat(numberFormat, locales, options) {
 
 
 /**
+ * Mapping from currency codes to the number of decimal digits used for them.
+ * Default is 2 digits.
+ *
+ * Spec: ISO 4217 Currency and Funds Code List.
+ * http://www.currency-iso.org/en/home/tables/table-a1.html
+ */
+var currencyDigits = {
+    BHD: 3,
+    BIF: 0,
+    BYR: 0,
+    CLF: 4,
+    CLP: 0,
+    DJF: 0,
+    GNF: 0,
+    IQD: 3,
+    ISK: 0,
+    JOD: 3,
+    JPY: 0,
+    KMF: 0,
+    KRW: 0,
+    KWD: 3,
+    LYD: 3,
+    OMR: 3,
+    PYG: 0,
+    RWF: 0,
+    TND: 3,
+    UGX: 0,
+    UYI: 0,
+    VND: 0,
+    VUV: 0,
+    XAF: 0,
+    XOF: 0,
+    XPF: 0
+};
+
+
+/**
  * Returns the number of decimal digits to be used for the given currency.
  *
  * Spec: ECMAScript Internationalization API Specification, 11.1.1.
@@ -2106,7 +2100,7 @@ function numberFormatFormatToBind(value) {
 
     // Step 1.a.ii-iii.
     var x = ToNumber(value);
-    return intl_FormatNumber(this, x, /* formatToParts = */ false);
+    return intl_FormatNumber(this, x);
 }
 
 
@@ -2133,22 +2127,6 @@ function Intl_NumberFormat_format_get() {
     // Step 2.
     return internals.boundFormat;
 }
-_SetCanonicalName(Intl_NumberFormat_format_get, "get format");
-
-
-function Intl_NumberFormat_formatToParts(value) {
-    // Step 1.
-    var nf = this;
-
-    // Steps 2-3.
-    getNumberFormatInternals(nf, "formatToParts");
-
-    // Step 4.
-    var x = ToNumber(value);
-
-    // Step 5.
-    return intl_FormatNumber(nf, x, /* formatToParts = */ true);
-}
 
 
 /**
@@ -2290,6 +2268,26 @@ function getDateTimeFormatInternals(obj, methodName) {
     return internalProps;
 }
 
+/**
+ * Components of date and time formats and their values.
+ *
+ * Spec: ECMAScript Internationalization API Specification, 12.1.1.
+ */
+var dateTimeComponentValues = {
+    weekday: ["narrow", "short", "long"],
+    era: ["narrow", "short", "long"],
+    year: ["2-digit", "numeric"],
+    month: ["2-digit", "numeric", "narrow", "short", "long"],
+    day: ["2-digit", "numeric"],
+    hour: ["2-digit", "numeric"],
+    minute: ["2-digit", "numeric"],
+    second: ["2-digit", "numeric"],
+    timeZoneName: ["short", "long"]
+};
+
+
+var dateTimeComponents = std_Object_getOwnPropertyNames(dateTimeComponentValues);
+
 
 /**
  * Initializes an object as a DateTimeFormat.
@@ -2379,19 +2377,12 @@ function InitializeDateTimeFormat(dateTimeFormat, locales, options) {
     lazyDateTimeFormatData.formatOpt = formatOpt;
 
     // Step 19.
-    // 12.1, Table 4: Components of date and time formats.
-    formatOpt.weekday = GetOption(options, "weekday", "string", ["narrow", "short", "long"],
-                                  undefined);
-    formatOpt.era = GetOption(options, "era", "string", ["narrow", "short", "long"], undefined);
-    formatOpt.year = GetOption(options, "year", "string", ["2-digit", "numeric"], undefined);
-    formatOpt.month = GetOption(options, "month", "string",
-                                ["2-digit", "numeric", "narrow", "short", "long"], undefined);
-    formatOpt.day = GetOption(options, "day", "string", ["2-digit", "numeric"], undefined);
-    formatOpt.hour = GetOption(options, "hour", "string", ["2-digit", "numeric"], undefined);
-    formatOpt.minute = GetOption(options, "minute", "string", ["2-digit", "numeric"], undefined);
-    formatOpt.second = GetOption(options, "second", "string", ["2-digit", "numeric"], undefined);
-    formatOpt.timeZoneName = GetOption(options, "timeZoneName", "string", ["short", "long"],
-                                       undefined);
+    var i, prop;
+    for (i = 0; i < dateTimeComponents.length; i++) {
+        prop = dateTimeComponents[i];
+        var value = GetOption(options, prop, "string", dateTimeComponentValues[prop], undefined);
+        formatOpt[prop] = value;
+    }
 
     // Steps 20-21 provided by ICU - see comment after this function.
 
@@ -2659,6 +2650,7 @@ function ToDateTimeOptions(options, required, defaults) {
     return options;
 }
 
+
 /**
  * Compares the date and time components requested by options with the available
  * date and time formats in formats, and selects the best match according
@@ -2844,7 +2836,6 @@ function Intl_DateTimeFormat_format_get() {
     // Step 2.
     return internals.boundFormat;
 }
-_SetCanonicalName(Intl_DateTimeFormat_format_get, "get format");
 
 
 function Intl_DateTimeFormat_formatToParts() {
@@ -2980,232 +2971,6 @@ function resolveICUPattern(pattern, result) {
     }
 }
 
-/********** Intl.PluralRules **********/
-
-/**
- * PluralRules internal properties.
- *
- * Spec: ECMAScript 402 API, PluralRules, 1.3.3.
- */
-var pluralRulesInternalProperties = {
-    _availableLocales: null,
-    availableLocales: function()
-    {
-        var locales = this._availableLocales;
-        if (locales)
-            return locales;
-
-        locales = intl_PluralRules_availableLocales();
-        addSpecialMissingLanguageTags(locales);
-        return (this._availableLocales = locales);
-    }
-};
-
-/**
- * Compute an internal properties object from |lazyPluralRulesData|.
- */
-function resolvePluralRulesInternals(lazyPluralRulesData) {
-    assert(IsObject(lazyPluralRulesData), "lazy data not an object?");
-
-    var internalProps = std_Object_create(null);
-
-    var requestedLocales = lazyPluralRulesData.requestedLocales;
-
-    var PluralRules = pluralRulesInternalProperties;
-
-    // Step 13.
-    const r = ResolveLocale(callFunction(PluralRules.availableLocales, PluralRules),
-                          lazyPluralRulesData.requestedLocales,
-                          lazyPluralRulesData.opt,
-                          noRelevantExtensionKeys, undefined);
-
-    // Step 14.
-    internalProps.locale = r.locale;
-    internalProps.type = lazyPluralRulesData.type;
-
-    internalProps.pluralCategories = intl_GetPluralCategories(
-        internalProps.locale,
-        internalProps.type);
-
-    internalProps.minimumIntegerDigits = lazyPluralRulesData.minimumIntegerDigits;
-    internalProps.minimumFractionDigits = lazyPluralRulesData.minimumFractionDigits;
-    internalProps.maximumFractionDigits = lazyPluralRulesData.maximumFractionDigits;
-
-    if ("minimumSignificantDigits" in lazyPluralRulesData) {
-        assert("maximumSignificantDigits" in lazyPluralRulesData, "min/max sig digits mismatch");
-        internalProps.minimumSignificantDigits = lazyPluralRulesData.minimumSignificantDigits;
-        internalProps.maximumSignificantDigits = lazyPluralRulesData.maximumSignificantDigits;
-    }
-
-    return internalProps;
-}
-
-/**
- * Returns an object containing the PluralRules internal properties of |obj|,
- * or throws a TypeError if |obj| isn't PluralRules-initialized.
- */
-function getPluralRulesInternals(obj, methodName) {
-    var internals = getIntlObjectInternals(obj, "PluralRules", methodName);
-    assert(internals.type === "PluralRules", "bad type escaped getIntlObjectInternals");
-
-    var internalProps = maybeInternalProperties(internals);
-    if (internalProps)
-        return internalProps;
-
-    internalProps = resolvePluralRulesInternals(internals.lazyData);
-    setInternalProperties(internals, internalProps);
-    return internalProps;
-}
-
-/**
- * Initializes an object as a PluralRules.
- *
- * This method is complicated a moderate bit by its implementing initialization
- * as a *lazy* concept.  Everything that must happen now, does -- but we defer
- * all the work we can until the object is actually used as a PluralRules.
- * This later work occurs in |resolvePluralRulesInternals|; steps not noted
- * here occur there.
- *
- * Spec: ECMAScript 402 API, PluralRules, 1.1.1.
- */
-function InitializePluralRules(pluralRules, locales, options) {
-    assert(IsObject(pluralRules), "InitializePluralRules");
-
-    // Step 1.
-    if (isInitializedIntlObject(pluralRules))
-        ThrowTypeError(JSMSG_INTL_OBJECT_REINITED);
-
-    let internals = initializeIntlObject(pluralRules);
-
-    // Lazy PluralRules data has the following structure:
-    //
-    //   {
-    //     requestedLocales: List of locales,
-    //     type: "cardinal" / "ordinal",
-    //
-    //     opt: // opt object computer in InitializePluralRules
-    //       {
-    //         localeMatcher: "lookup" / "best fit",
-    //       }
-    //
-    //     minimumIntegerDigits: integer ∈ [1, 21],
-    //     minimumFractionDigits: integer ∈ [0, 20],
-    //     maximumFractionDigits: integer ∈ [0, 20],
-    //
-    //     // optional
-    //     minimumSignificantDigits: integer ∈ [1, 21],
-    //     maximumSignificantDigits: integer ∈ [1, 21],
-    //   }
-    //
-    // Note that lazy data is only installed as a final step of initialization,
-    // so every PluralRules lazy data object has *all* these properties, never a
-    // subset of them.
-    const lazyPluralRulesData = std_Object_create(null);
-
-    // Step 3.
-    let requestedLocales = CanonicalizeLocaleList(locales);
-    lazyPluralRulesData.requestedLocales = requestedLocales;
-
-    // Steps 4-5.
-    if (options === undefined)
-        options = {};
-    else
-        options = ToObject(options);
-
-    // Step 6.
-    const type = GetOption(options, "type", "string", ["cardinal", "ordinal"], "cardinal");
-    lazyPluralRulesData.type = type;
-
-    // Step 8.
-    let opt = new Record();
-    lazyPluralRulesData.opt = opt;
-
-    // Steps 9-10.
-    let matcher = GetOption(options, "localeMatcher", "string", ["lookup", "best fit"], "best fit");
-    opt.localeMatcher = matcher;
-
-    // Steps 11-12.
-    SetNumberFormatDigitOptions(lazyPluralRulesData, options, 0, 3);
-
-    setLazyData(internals, "PluralRules", lazyPluralRulesData)
-}
-
-/**
- * Returns the subset of the given locale list for which this locale list has a
- * matching (possibly fallback) locale. Locales appear in the same order in the
- * returned list as in the input list.
- *
- * Spec: ECMAScript 402 API, PluralRules, 1.3.2.
- */
-function Intl_PluralRules_supportedLocalesOf(locales /*, options*/) {
-    var options = arguments.length > 1 ? arguments[1] : undefined;
-
-    // Step 1.
-    var availableLocales = callFunction(pluralRulesInternalProperties.availableLocales,
-                                        pluralRulesInternalProperties);
-    // Step 2.
-    let requestedLocales = CanonicalizeLocaleList(locales);
-
-    // Step 3.
-    return SupportedLocales(availableLocales, requestedLocales, options);
-}
-
-/**
- * Returns a String value representing the plural category matching
- * the number passed as value according to the
- * effective locale and the formatting options of this PluralRules.
- *
- * Spec: ECMAScript 402 API, PluralRules, 1.4.3.
- */
-function Intl_PluralRules_select(value) {
-    // Step 1.
-    let pluralRules = this;
-    // Step 2.
-    let internals = getPluralRulesInternals(pluralRules, "select");
-
-    // Steps 3-4.
-    let n = ToNumber(value);
-
-    // Step 5.
-    return intl_SelectPluralRule(pluralRules, n);
-}
-
-/**
- * Returns the resolved options for a PluralRules object.
- *
- * Spec: ECMAScript 402 API, PluralRules, 1.4.4.
- */
-function Intl_PluralRules_resolvedOptions() {
-    var internals = getPluralRulesInternals(this, "resolvedOptions");
-
-    var internalsPluralCategories = internals.pluralCategories;
-    var pluralCategories = [];
-    for (var i = 0; i < internalsPluralCategories.length; i++)
-        _DefineDataProperty(pluralCategories, i, internalsPluralCategories[i]);
-
-    var result = {
-        locale: internals.locale,
-        type: internals.type,
-        pluralCategories,
-        minimumIntegerDigits: internals.minimumIntegerDigits,
-        minimumFractionDigits: internals.minimumFractionDigits,
-        maximumFractionDigits: internals.maximumFractionDigits,
-    };
-
-    var optionalProperties = [
-        "minimumSignificantDigits",
-        "maximumSignificantDigits"
-    ];
-
-    for (var i = 0; i < optionalProperties.length; i++) {
-        var p = optionalProperties[i];
-        if (callFunction(std_Object_hasOwnProperty, internals, p))
-            _DefineDataProperty(result, p, internals[p]);
-    }
-    return result;
-}
-
-
 function Intl_getCanonicalLocales(locales) {
   let codes = CanonicalizeLocaleList(locales);
   let result = [];
@@ -3241,126 +3006,3 @@ function Intl_getCalendarInfo(locales) {
 
   return result;
 }
-
-/**
- * This function is a custom method designed after Intl API, but currently
- * not part of the spec or spec proposal.
- * We want to use it internally to retrieve translated values from CLDR in
- * order to ensure they're aligned with what Intl API returns.
- *
- * This API may one day be a foundation for an ECMA402 API spec proposal.
- *
- * The function takes two arguments - locales which is a list of locale strings
- * and options which is an object with two optional properties:
- *
- *   keys:
- *     an Array of string values that are paths to individual terms
- *
- *   style:
- *     a String with a value "long", "short" or "narrow"
- *
- * It returns an object with properties:
- *
- *   locale:
- *     a negotiated locale string
- *
- *   style:
- *     negotiated style
- *
- *   values:
- *     A key-value pair list of requested keys and corresponding
- *     translated values
- *
- */
-function Intl_getDisplayNames(locales, options) {
-    // 1. Let requestLocales be ? CanonicalizeLocaleList(locales).
-    const requestedLocales = CanonicalizeLocaleList(locales);
-
-    // 2. If options is undefined, then
-    if (options === undefined)
-        // a. Let options be ObjectCreate(%ObjectPrototype%).
-        options = {};
-    // 3. Else,
-    else
-        // a. Let options be ? ToObject(options).
-        options = ToObject(options);
-
-    const DateTimeFormat = dateTimeFormatInternalProperties;
-
-    // 4. Let localeData be %DateTimeFormat%.[[localeData]].
-    const localeData = DateTimeFormat.localeData;
-
-    // 5. Let opt be a new Record.
-    const localeOpt = new Record();
-    // 6. Set localeOpt.[[localeMatcher]] to "best fit".
-    localeOpt.localeMatcher = "best fit";
-
-    // 7. Let r be ResolveLocale(%DateTimeFormat%.[[availableLocales]], requestedLocales, localeOpt,
-    //    %DateTimeFormat%.[[relevantExtensionKeys]], localeData).
-    const r = ResolveLocale(callFunction(DateTimeFormat.availableLocales, DateTimeFormat),
-                          requestedLocales,
-                          localeOpt,
-                          DateTimeFormat.relevantExtensionKeys,
-                          localeData);
-
-    // 8. Let style be ? GetOption(options, "style", "string", « "long", "short", "narrow" », "long").
-    const style = GetOption(options, "style", "string", ["long", "short", "narrow"], "long");
-    // 9. Let keys be ? Get(options, "keys").
-    let keys = options.keys;
-
-    // 10. If keys is undefined,
-    if (keys === undefined) {
-        // a. Let keys be ArrayCreate(0).
-        keys = [];
-    } else if (!IsObject(keys)) {
-        // 11. Else,
-        //   a. If Type(keys) is not Object, throw a TypeError exception.
-        ThrowTypeError(JSMSG_INVALID_KEYS_TYPE);
-    }
-
-    // 12. Let processedKeys be ArrayCreate(0).
-    // (This really should be a List, but we use an Array here in order that
-    // |intl_ComputeDisplayNames| may infallibly access the list's length via
-    // |ArrayObject::length|.)
-    let processedKeys = [];
-    // 13. Let len be ? ToLength(? Get(keys, "length")).
-    let len = ToLength(keys.length);
-    // 14. Let i be 0.
-    // 15. Repeat, while i < len
-    for (let i = 0; i < len; i++) {
-        // a. Let processedKey be ? ToString(? Get(keys, i)).
-        // b. Perform ? CreateDataPropertyOrThrow(processedKeys, i, processedKey).
-        callFunction(std_Array_push, processedKeys, ToString(keys[i]));
-    }
-
-    // 16. Let names be ? ComputeDisplayNames(r.[[locale]], style, processedKeys).
-    const names = intl_ComputeDisplayNames(r.locale, style, processedKeys);
-
-    // 17. Let values be ObjectCreate(%ObjectPrototype%).
-    const values = {};
-
-    // 18. Set i to 0.
-    // 19. Repeat, while i < len
-    for (let i = 0; i < len; i++) {
-        // a. Let key be ? Get(processedKeys, i).
-        const key = processedKeys[i];
-        // b. Let name be ? Get(names, i).
-        const name = names[i];
-        // c. Assert: Type(name) is string.
-        assert(typeof name === "string", "unexpected non-string value");
-        // d. Assert: the length of name is greater than zero.
-        assert(name.length > 0, "empty string value");
-        // e. Perform ? DefinePropertyOrThrow(values, key, name).
-        _DefineDataProperty(values, key, name);
-    }
-
-    // 20. Let options be ObjectCreate(%ObjectPrototype%).
-    // 21. Perform ! DefinePropertyOrThrow(result, "locale", r.[[locale]]).
-    // 22. Perform ! DefinePropertyOrThrow(result, "style", style).
-    // 23. Perform ! DefinePropertyOrThrow(result, "values", values).
-    const result = { locale: r.locale, style, values };
-
-    // 24. Return result.
-    return result;
-}
-