chrono-node/dist/esm/locales/en/parsers/ENYearMonthNameParser.js

A natural language date parser in Javascript

import { MONTH_DICTIONARY } from "../constants.js";
import { matchAnyPattern } from "../../../utils/pattern.js";
import { parseYear } from "../constants.js";
import { AbstractParserWithWordBoundaryChecking } from "../../../common/parsers/AbstractParserWithWordBoundary.js";
const YEAR_PATTERN = `(?:[1-9][0-9]{0,3}\\s{0,2}(?:BE|AD|BC|BCE|CE)|[1-9][0-9]{3})`;
const PATTERN = new RegExp(`(${YEAR_PATTERN})` +
    `(?:\\s*[-.\\/,]?\\s*|\\s+of\\s+)` +
    `(${matchAnyPattern(MONTH_DICTIONARY)})` +
    `(?=[^\\s\\w]|\\s+[^0-9]|\\s+$|$)`, "i");
const YEAR_GROUP = 1;
const MONTH_NAME_GROUP = 2;
export default class ENYearMonthNameParser extends AbstractParserWithWordBoundaryChecking {
    innerPattern() {
        return PATTERN;
    }
    innerExtract(context, match) {
        const year = parseYear(match[YEAR_GROUP]);
        const monthName = match[MONTH_NAME_GROUP].toLowerCase();
        const month = MONTH_DICTIONARY[monthName];
        const result = context.createParsingResult(match.index, match[0]);
        result.start.imply("day", 1);
        result.start.assign("month", month);
        result.start.assign("year", year);
        result.start.addTag("parser/ENYearMonthNameParser");
        return result;
    }
}
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