51 lines
1.9 KiB
JavaScript
51 lines
1.9 KiB
JavaScript
var PART_TYPES_TO_COLLAPSE = new Set([
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'unit',
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'exponentMinusSign',
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'minusSign',
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'plusSign',
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'percentSign',
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'exponentSeparator',
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'percent',
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'percentSign',
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'currency',
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'literal',
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]);
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/**
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* https://tc39.es/ecma402/#sec-collapsenumberrange
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* LDML: https://unicode-org.github.io/cldr/ldml/tr35-numbers.html#collapsing-number-ranges
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*/
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export function CollapseNumberRange(numberFormat, result, _a) {
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var getInternalSlots = _a.getInternalSlots;
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var internalSlots = getInternalSlots(numberFormat);
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var symbols = internalSlots.dataLocaleData.numbers.symbols[internalSlots.numberingSystem];
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var rangeSignRegex = new RegExp("s?[".concat(symbols.rangeSign, "]s?"));
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var rangeSignIndex = result.findIndex(function (r) { return r.type === 'literal' && rangeSignRegex.test(r.value); });
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var prefixSignParts = [];
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for (var i = rangeSignIndex - 1; i >= 0; i--) {
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if (!PART_TYPES_TO_COLLAPSE.has(result[i].type)) {
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break;
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}
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prefixSignParts.unshift(result[i]);
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}
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// Don't collapse if it's a single code point
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if (Array.from(prefixSignParts.map(function (p) { return p.value; }).join('')).length > 1) {
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var newResult = Array.from(result);
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newResult.splice(rangeSignIndex - prefixSignParts.length, prefixSignParts.length);
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return newResult;
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}
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var suffixSignParts = [];
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for (var i = rangeSignIndex + 1; i < result.length; i++) {
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if (!PART_TYPES_TO_COLLAPSE.has(result[i].type)) {
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break;
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}
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suffixSignParts.push(result[i]);
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}
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// Don't collapse if it's a single code point
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if (Array.from(suffixSignParts.map(function (p) { return p.value; }).join('')).length > 1) {
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var newResult = Array.from(result);
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newResult.splice(rangeSignIndex + 1, suffixSignParts.length);
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return newResult;
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}
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return result;
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}
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