Enable eslint for util.ts (#3887)

* Enable eslint for util.ts

* Drop babel (since eslint parser was replaced by typescript-parser and it doesn't seem to be used anywhere)

* Apply "plugin:@typescript-eslint/recommended"

* Minor

* Remove comment for generated file (Keep the first comment only)

src/util.js

@@ -1,4 +1,5 @@
 "use strict";
+/*!
 // Common Util for frontend and backend
 //
 // DOT NOT MODIFY util.js!
@@ -6,6 +7,7 @@
 //
 // Backend uses the compiled file util.js
 // Frontend uses util.ts
+*/
 Object.defineProperty(exports, "__esModule", { value: true });
 exports.localToUTC = exports.utcToLocal = exports.utcToISODateTime = exports.isoToUTCDateTime = exports.parseTimeFromTimeObject = exports.parseTimeObject = exports.getMaintenanceRelativeURL = exports.getMonitorRelativeURL = exports.genSecret = exports.getCryptoRandomInt = exports.getRandomInt = exports.getRandomArbitrary = exports.TimeLogger = exports.polyfill = exports.log = exports.debug = exports.ucfirst = exports.sleep = exports.flipStatus = exports.MIN_INTERVAL_SECOND = exports.MAX_INTERVAL_SECOND = exports.SQL_DATETIME_FORMAT_WITHOUT_SECOND = exports.SQL_DATETIME_FORMAT = exports.SQL_DATE_FORMAT = exports.STATUS_PAGE_MAINTENANCE = exports.STATUS_PAGE_PARTIAL_DOWN = exports.STATUS_PAGE_ALL_UP = exports.STATUS_PAGE_ALL_DOWN = exports.MAINTENANCE = exports.PENDING = exports.UP = exports.DOWN = exports.appName = exports.isDev = void 0;
 const dayjs = require("dayjs");
@@ -22,9 +24,8 @@ exports.STATUS_PAGE_MAINTENANCE = 3;
 exports.SQL_DATE_FORMAT = "YYYY-MM-DD";
 exports.SQL_DATETIME_FORMAT = "YYYY-MM-DD HH:mm:ss";
 exports.SQL_DATETIME_FORMAT_WITHOUT_SECOND = "YYYY-MM-DD HH:mm";
-exports.MAX_INTERVAL_SECOND = 2073600; // 24 days
-exports.MIN_INTERVAL_SECOND = 20; // 20 seconds
-/** Flip the status of s */
+exports.MAX_INTERVAL_SECOND = 2073600;
+exports.MIN_INTERVAL_SECOND = 20;
 function flipStatus(s) {
     if (s === exports.UP) {
         return exports.DOWN;
@@ -35,18 +36,10 @@ function flipStatus(s) {
     return s;
 }
 exports.flipStatus = flipStatus;
-/**
- * Delays for specified number of seconds
- * @param ms Number of milliseconds to sleep for
- */
 function sleep(ms) {
     return new Promise(resolve => setTimeout(resolve, ms));
 }
 exports.sleep = sleep;
-/**
- * PHP's ucfirst
- * @param str
- */
 function ucfirst(str) {
     if (!str) {
         return str;
@@ -55,26 +48,12 @@ function ucfirst(str) {
     return firstLetter.toUpperCase() + str.substr(1);
 }
 exports.ucfirst = ucfirst;
-/**
- * @deprecated Use log.debug
- * @since https://github.com/louislam/uptime-kuma/pull/910
- * @param msg
- */
 function debug(msg) {
     exports.log.log("", msg, "debug");
 }
 exports.debug = debug;
 class Logger {
     constructor() {
-        /**
-         * UPTIME_KUMA_HIDE_LOG=debug_monitor,info_monitor
-         *
-         * Example:
-         *  [
-         *     "debug_monitor",          // Hide all logs that level is debug and the module is monitor
-         *     "info_monitor",
-         *  ]
-         */
         this.hideLog = {
             info: [],
             warn: [],
@@ -82,10 +61,9 @@ class Logger {
             debug: [],
         };
         if (typeof process !== "undefined" && process.env.UPTIME_KUMA_HIDE_LOG) {
-            let list = process.env.UPTIME_KUMA_HIDE_LOG.split(",").map(v => v.toLowerCase());
-            for (let pair of list) {
-                // split first "_" only
-                let values = pair.split(/_(.*)/s);
+            const list = process.env.UPTIME_KUMA_HIDE_LOG.split(",").map(v => v.toLowerCase());
+            for (const pair of list) {
+                const values = pair.split(/_(.*)/s);
                 if (values.length >= 2) {
                     this.hideLog[values[0]].push(values[1]);
                 }
@@ -94,12 +72,6 @@ class Logger {
             this.debug("server", this.hideLog);
         }
     }
-    /**
-     * Write a message to the log
-     * @param module The module the log comes from
-     * @param msg Message to write
-     * @param level Log level. One of INFO, WARN, ERROR, DEBUG or can be customized.
-     */
     log(module, msg, level) {
         if (this.hideLog[level] && this.hideLog[level].includes(module.toLowerCase())) {
             return;
@@ -132,44 +104,18 @@ class Logger {
             console.log(formattedMessage);
         }
     }
-    /**
-     * Log an INFO message
-     * @param module Module log comes from
-     * @param msg Message to write
-     */
     info(module, msg) {
         this.log(module, msg, "info");
     }
-    /**
-     * Log a WARN message
-     * @param module Module log comes from
-     * @param msg Message to write
-     */
     warn(module, msg) {
         this.log(module, msg, "warn");
     }
-    /**
-     * Log an ERROR message
-     * @param module Module log comes from
-     * @param msg Message to write
-     */
     error(module, msg) {
         this.log(module, msg, "error");
     }
-    /**
-     * Log a DEBUG message
-     * @param module Module log comes from
-     * @param msg Message to write
-     */
     debug(module, msg) {
         this.log(module, msg, "debug");
     }
-    /**
-     * Log an exeption as an ERROR
-     * @param module Module log comes from
-     * @param exception The exeption to include
-     * @param msg The message to write
-     */
     exception(module, exception, msg) {
         let finalMessage = exception;
         if (msg) {
@@ -179,20 +125,12 @@ class Logger {
     }
 }
 exports.log = new Logger();
-/**
- * String.prototype.replaceAll() polyfill
- * https://gomakethings.com/how-to-replace-a-section-of-a-string-with-another-one-with-vanilla-js/
- * @author Chris Ferdinandi
- * @license MIT
- */
 function polyfill() {
     if (!String.prototype.replaceAll) {
         String.prototype.replaceAll = function (str, newStr) {
-            // If a regex pattern
             if (Object.prototype.toString.call(str).toLowerCase() === "[object regexp]") {
                 return this.replace(str, newStr);
             }
-            // If a string
             return this.replace(new RegExp(str, "g"), newStr);
         };
     }
@@ -202,10 +140,6 @@ class TimeLogger {
     constructor() {
         this.startTime = dayjs().valueOf();
     }
-    /**
-     * Output time since start of monitor
-     * @param name Name of monitor
-     */
     print(name) {
         if (exports.isDev && process.env.TIMELOGGER === "1") {
             console.log(name + ": " + (dayjs().valueOf() - this.startTime) + "ms");
@@ -213,66 +147,42 @@ class TimeLogger {
     }
 }
 exports.TimeLogger = TimeLogger;
-/**
- * Returns a random number between min (inclusive) and max (exclusive)
- */
 function getRandomArbitrary(min, max) {
     return Math.random() * (max - min) + min;
 }
 exports.getRandomArbitrary = getRandomArbitrary;
-/**
- * From: https://stackoverflow.com/questions/1527803/generating-random-whole-numbers-in-javascript-in-a-specific-range
- *
- * Returns a random integer between min (inclusive) and max (inclusive).
- * The value is no lower than min (or the next integer greater than min
- * if min isn't an integer) and no greater than max (or the next integer
- * lower than max if max isn't an integer).
- * Using Math.round() will give you a non-uniform distribution!
- */
 function getRandomInt(min, max) {
     min = Math.ceil(min);
     max = Math.floor(max);
     return Math.floor(Math.random() * (max - min + 1)) + min;
 }
 exports.getRandomInt = getRandomInt;
-/**
- * Returns either the NodeJS crypto.randomBytes() function or its
- * browser equivalent implemented via window.crypto.getRandomValues()
- */
-let getRandomBytes = ((typeof window !== 'undefined' && window.crypto)
-    // Browsers
+const getRandomBytes = ((typeof window !== "undefined" && window.crypto)
     ? function () {
         return (numBytes) => {
-            let randomBytes = new Uint8Array(numBytes);
+            const randomBytes = new Uint8Array(numBytes);
             for (let i = 0; i < numBytes; i += 65536) {
                 window.crypto.getRandomValues(randomBytes.subarray(i, i + Math.min(numBytes - i, 65536)));
             }
             return randomBytes;
         };
     }
-    // Node
     : function () {
         return require("crypto").randomBytes;
     })();
-/**
- * Get a random integer suitable for use in cryptography between upper
- * and lower bounds.
- * @param min Minimum value of integer
- * @param max Maximum value of integer
- * @returns Cryptographically suitable random integer
- */
 function getCryptoRandomInt(min, max) {
-    // synchronous version of: https://github.com/joepie91/node-random-number-csprng
     const range = max - min;
-    if (range >= Math.pow(2, 32))
+    if (range >= Math.pow(2, 32)) {
         console.log("Warning! Range is too large.");
+    }
     let tmpRange = range;
     let bitsNeeded = 0;
     let bytesNeeded = 0;
     let mask = 1;
     while (tmpRange > 0) {
-        if (bitsNeeded % 8 === 0)
+        if (bitsNeeded % 8 === 0) {
             bytesNeeded += 1;
+        }
         bitsNeeded += 1;
         mask = mask << 1 | 1;
         tmpRange = tmpRange >>> 1;
@@ -291,11 +201,6 @@ function getCryptoRandomInt(min, max) {
     }
 }
 exports.getCryptoRandomInt = getCryptoRandomInt;
-/**
- * Generate a random alphanumeric string of fixed length
- * @param length Length of string to generate
- * @returns string
- */
 function genSecret(length = 64) {
     let secret = "";
     const chars = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789";
@@ -306,29 +211,14 @@ function genSecret(length = 64) {
     return secret;
 }
 exports.genSecret = genSecret;
-/**
- * Get the path of a monitor
- * @param id ID of monitor
- * @returns Formatted relative path
- */
 function getMonitorRelativeURL(id) {
     return "/dashboard/" + id;
 }
 exports.getMonitorRelativeURL = getMonitorRelativeURL;
-/**
- * Get relative path for maintenance
- * @param id ID of maintenance
- * @returns Formatted relative path
- */
 function getMaintenanceRelativeURL(id) {
     return "/maintenance/" + id;
 }
 exports.getMaintenanceRelativeURL = getMaintenanceRelativeURL;
-/**
- * Parse to Time Object that used in VueDatePicker
- * @param {string} time E.g. 12:00
- * @returns object
- */
 function parseTimeObject(time) {
     if (!time) {
         return {
@@ -336,11 +226,11 @@ function parseTimeObject(time) {
             minutes: 0,
         };
     }
-    let array = time.split(":");
+    const array = time.split(":");
     if (array.length < 2) {
         throw new Error("parseVueDatePickerTimeFormat: Invalid Time");
     }
-    let obj = {
+    const obj = {
         hours: parseInt(array[0]),
         minutes: parseInt(array[1]),
         seconds: 0,
@@ -351,9 +241,6 @@ function parseTimeObject(time) {
     return obj;
 }
 exports.parseTimeObject = parseTimeObject;
-/**
- * @returns string e.g. 12:00
- */
 function parseTimeFromTimeObject(obj) {
     if (!obj) {
         return obj;
@@ -366,35 +253,18 @@ function parseTimeFromTimeObject(obj) {
     return result;
 }
 exports.parseTimeFromTimeObject = parseTimeFromTimeObject;
-/**
- * Convert ISO date to UTC
- * @param input Date
- * @returns ISO Date time
- */
 function isoToUTCDateTime(input) {
     return dayjs(input).utc().format(exports.SQL_DATETIME_FORMAT);
 }
 exports.isoToUTCDateTime = isoToUTCDateTime;
-/**
- * @param input
- */
 function utcToISODateTime(input) {
     return dayjs.utc(input).toISOString();
 }
 exports.utcToISODateTime = utcToISODateTime;
-/**
- * For SQL_DATETIME_FORMAT
- */
 function utcToLocal(input, format = exports.SQL_DATETIME_FORMAT) {
     return dayjs.utc(input).local().format(format);
 }
 exports.utcToLocal = utcToLocal;
-/**
- * Convert local datetime to UTC
- * @param input Local date
- * @param format Format to return
- * @returns Date in requested format
- */
 function localToUTC(input, format = exports.SQL_DATETIME_FORMAT) {
     return dayjs(input).utc().format(format);
 }