iso-weeks-year/dist/src/utils/firstDayWeek.js

Library to view week numbers for a year

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.firstDayWeek = void 0;
const internal_error_1 = require("./error/internal-error");
exports.firstDayWeek = (month, year) => {
    if (month < 0 || month > 11)
        throw new internal_error_1.InternalError('Error: invalid month!');
    return new Date(year, month).getDay();
};
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