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

A natural language date parser in Javascript

import { TIME_UNITS_PATTERN, parseTimeUnits, TIME_UNITS_NO_ABBR_PATTERN } from "../constants.js";
import { ParsingComponents } from "../../../results.js";
import { AbstractParserWithWordBoundaryChecking } from "../../../common/parsers/AbstractParserWithWordBoundary.js";
const PATTERN_WITH_OPTIONAL_PREFIX = new RegExp(`(?:(?:within|in|for)\\s*)?` +
    `(?:(?:about|around|roughly|approximately|just)\\s*(?:~\\s*)?)?(${TIME_UNITS_PATTERN})(?=\\W|$)`, "i");
const PATTERN_WITH_PREFIX = new RegExp(`(?:within|in|for)\\s*` +
    `(?:(?:about|around|roughly|approximately|just)\\s*(?:~\\s*)?)?(${TIME_UNITS_PATTERN})(?=\\W|$)`, "i");
const PATTERN_WITH_PREFIX_STRICT = new RegExp(`(?:within|in|for)\\s*` +
    `(?:(?:about|around|roughly|approximately|just)\\s*(?:~\\s*)?)?(${TIME_UNITS_NO_ABBR_PATTERN})(?=\\W|$)`, "i");
export default class ENTimeUnitWithinFormatParser extends AbstractParserWithWordBoundaryChecking {
    constructor(strictMode) {
        super();
        this.strictMode = strictMode;
    }
    innerPattern(context) {
        if (this.strictMode) {
            return PATTERN_WITH_PREFIX_STRICT;
        }
        return context.option.forwardDate ? PATTERN_WITH_OPTIONAL_PREFIX : PATTERN_WITH_PREFIX;
    }
    innerExtract(context, match) {
        if (match[0].match(/^for\s*the\s*\w+/)) {
            return null;
        }
        const timeUnits = parseTimeUnits(match[1]);
        if (!timeUnits) {
            return null;
        }
        return ParsingComponents.createRelativeFromReference(context.reference, timeUnits);
    }
}
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