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chrono-node

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A natural language date parser in Javascript

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import { FULL_MONTH_NAME_DICTIONARY, MONTH_DICTIONARY } from "../constants.js"; import { findYearClosestToRef } from "../../../calculation/years.js"; import { matchAnyPattern } from "../../../utils/pattern.js"; import { YEAR_PATTERN, parseYear } from "../constants.js"; import { AbstractParserWithWordBoundaryChecking } from "../../../common/parsers/AbstractParserWithWordBoundary.js"; const PATTERN = new RegExp(`((?:in)\\s*)?` + `(${matchAnyPattern(MONTH_DICTIONARY)})` + `\\s*` + `(?:` + `(?:,|-|of)?\\s*(${YEAR_PATTERN})?` + ")?" + "(?=[^\\s\\w]|\\s+[^0-9]|\\s+$|$)", "i"); const PREFIX_GROUP = 1; const MONTH_NAME_GROUP = 2; const YEAR_GROUP = 3; export default class ENMonthNameParser extends AbstractParserWithWordBoundaryChecking { innerPattern() { return PATTERN; } innerExtract(context, match) { const monthName = match[MONTH_NAME_GROUP].toLowerCase(); if (match[0].length <= 3 && !FULL_MONTH_NAME_DICTIONARY[monthName]) { return null; } const result = context.createParsingResult(match.index + (match[PREFIX_GROUP] || "").length, match.index + match[0].length); result.start.imply("day", 1); result.start.addTag("parser/ENMonthNameParser"); const month = MONTH_DICTIONARY[monthName]; result.start.assign("month", month); if (match[YEAR_GROUP]) { const year = parseYear(match[YEAR_GROUP]); result.start.assign("year", year); } else { const year = findYearClosestToRef(context.refDate, 1, month); result.start.imply("year", year); } return result; } } //# sourceMappingURL=ENMonthNameParser.js.map