@idris-maps/yyyy-mm-dd/dist/validate.js

A date library dealing only with days in the YYYY-MM-DD format

"use strict";
var __importDefault = (this && this.__importDefault) || function (mod) {
    return (mod && mod.__esModule) ? mod : { "default": mod };
};
Object.defineProperty(exports, "__esModule", { value: true });
var fromJsDate_1 = __importDefault(require("./fromJsDate"));
var isString = function (d) { return typeof d === 'string'; };
var isNum = function (n) { return !isNaN(Number(n)); };
var isCorrectFormat = function (d) {
    var parts = d.split('-');
    if (parts.length !== 3) {
        return false;
    }
    var yyyy = parts[0], mm = parts[1], dd = parts[2];
    return isNum(yyyy)
        && yyyy.length === 4
        && isNum(mm)
        && mm.length === 2
        && isNum(dd)
        && dd.length === 2;
};
var isADay = function (d) {
    try {
        var date = new Date(d);
        return String(date) !== 'Invalid Date'
            && d === fromJsDate_1.default(date);
    }
    catch (e) {
        return false;
    }
};
exports.default = (function (day) {
    var error = {
        yyyymmddString: function (d) { return d + " is not a \"YYYY-MM-DD\" string"; },
        notADay: function (d) { return d + " does not exist"; },
    };
    if (!isString(day)) {
        return { valid: false, error: error.yyyymmddString(day) };
    }
    if (!isCorrectFormat(day)) {
        return { valid: false, error: error.yyyymmddString(day) };
    }
    if (!isADay(day)) {
        return { valid: false, error: error.notADay(day) };
    }
    return { valid: true };
});