Marc Mintel
5397309103
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86 lines
3.3 KiB
Plaintext
86 lines
3.3 KiB
Plaintext
import { ResolveLocale } from "@formatjs/intl-localematcher";
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import { CanonicalizeLocaleList } from "../CanonicalizeLocaleList.js";
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import { CoerceOptionsToObject } from "../CoerceOptionsToObject.js";
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import { GetOption } from "../GetOption.js";
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import { GetStringOrBooleanOption } from "../GetStringOrBooleanOption.js";
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import "../types/number.js";
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import { invariant } from "../utils.js";
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import { CurrencyDigits } from "./CurrencyDigits.js";
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import { SetNumberFormatDigitOptions } from "./SetNumberFormatDigitOptions.js";
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import { SetNumberFormatUnitOptions } from "./SetNumberFormatUnitOptions.js";
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/**
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* https://tc39.es/ecma402/#sec-initializenumberformat
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*/
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export function InitializeNumberFormat(nf, locales, opts, { getInternalSlots, localeData, availableLocales, numberingSystemNames, getDefaultLocale, currencyDigitsData }) {
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const requestedLocales = CanonicalizeLocaleList(locales);
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const options = CoerceOptionsToObject(opts);
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const opt = Object.create(null);
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const matcher = GetOption(options, "localeMatcher", "string", ["lookup", "best fit"], "best fit");
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opt.localeMatcher = matcher;
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const numberingSystem = GetOption(options, "numberingSystem", "string", undefined, undefined);
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if (numberingSystem !== undefined && numberingSystemNames.indexOf(numberingSystem) < 0) {
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// 8.a. If numberingSystem does not match the Unicode Locale Identifier type nonterminal,
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// throw a RangeError exception.
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throw RangeError(`Invalid numberingSystems: ${numberingSystem}`);
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}
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opt.nu = numberingSystem;
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const r = ResolveLocale(
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Array.from(availableLocales),
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requestedLocales,
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opt,
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// [[RelevantExtensionKeys]] slot, which is a constant
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["nu"],
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localeData,
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getDefaultLocale
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);
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const dataLocaleData = localeData[r.dataLocale];
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invariant(!!dataLocaleData, `Missing locale data for ${r.dataLocale}`);
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const internalSlots = getInternalSlots(nf);
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internalSlots.locale = r.locale;
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internalSlots.dataLocale = r.dataLocale;
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internalSlots.numberingSystem = r.nu;
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internalSlots.dataLocaleData = dataLocaleData;
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SetNumberFormatUnitOptions(internalSlots, options);
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const style = internalSlots.style;
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const notation = GetOption(options, "notation", "string", [
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"standard",
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"scientific",
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"engineering",
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"compact"
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], "standard");
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internalSlots.notation = notation;
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let mnfdDefault;
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let mxfdDefault;
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if (style === "currency" && notation === "standard") {
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const currency = internalSlots.currency;
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const cDigits = CurrencyDigits(currency, { currencyDigitsData });
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mnfdDefault = cDigits;
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mxfdDefault = cDigits;
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} else {
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mnfdDefault = 0;
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mxfdDefault = style === "percent" ? 0 : 3;
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}
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SetNumberFormatDigitOptions(internalSlots, options, mnfdDefault, mxfdDefault, notation);
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const compactDisplay = GetOption(options, "compactDisplay", "string", ["short", "long"], "short");
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let defaultUseGrouping = "auto";
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if (notation === "compact") {
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internalSlots.compactDisplay = compactDisplay;
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defaultUseGrouping = "min2";
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}
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let useGrouping = GetStringOrBooleanOption(options, "useGrouping", [
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"min2",
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"auto",
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"always"
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], "always", false, defaultUseGrouping);
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internalSlots.useGrouping = useGrouping;
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let signDisplay = GetOption(options, "signDisplay", "string", [
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"auto",
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"never",
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"always",
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"exceptZero",
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"negative"
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], "auto");
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internalSlots.signDisplay = signDisplay;
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return nf;
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}
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