ISOWeekYearParser.mjs
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import { startOfISOWeek } from "../../../startOfISOWeek.mjs";
import { constructFrom } from "../../../constructFrom.mjs";
import { Parser } from "../Parser.mjs";
import { parseNDigitsSigned } from "../utils.mjs";
// ISO week-numbering year
export class ISOWeekYearParser extends Parser {
priority = 130;
parse(dateString, token) {
if (token === "R") {
return parseNDigitsSigned(4, dateString);
}
return parseNDigitsSigned(token.length, dateString);
}
set(date, _flags, value) {
const firstWeekOfYear = constructFrom(date, 0);
firstWeekOfYear.setFullYear(value, 0, 4);
firstWeekOfYear.setHours(0, 0, 0, 0);
return startOfISOWeek(firstWeekOfYear);
}
incompatibleTokens = [
"G",
"y",
"Y",
"u",
"Q",
"q",
"M",
"L",
"w",
"d",
"D",
"e",
"c",
"t",
"T",
];
}