Merge branch 'main' into new-admin

README.md

@@ -146,7 +146,7 @@ Dann die `config.json` anpassen nach belieben. Es gibt die folgenden Konfigurati
 
 * **`server.email.from`** Absender für versendete E-Mails, z. B.: `"Freifunk Knotenformular <no-reply@musterstadt.freifunk.net>"`
 * **`server.email.smtp`** Konfiguration des SMTP-Servers für den E-Mail-Versand entsprechend der Dokumentation unter
-  [https://nodemailer.com/2-0-0-beta/setup-smtp/](https://nodemailer.com/2-0-0-beta/setup-smtp/), z. B.:
+  [https://nodemailer.com/smtp/](https://nodemailer.com/smtp/), z. B.:
 
 ```
 {

REFACTOR.md

@@ -2,9 +2,6 @@
 
 ## TODO
 
-* Different user accounts for admin panel:
-  * Username + password hash in config
-  * Commandline tool to generate hash
 * Test email rendering!
 
 ## Short term

package.json

@@ -68,7 +68,7 @@
         "@types/html-to-text": "^8.0.1",
         "@types/jest": "^28.1.6",
         "@types/lodash": "^4.14.178",
-        "@types/node": "^18.0.6",
+        "@types/node": "^18.6.2",
         "@types/node-cron": "^3.0.2",
         "@types/nodemailer": "^6.4.4",
         "@types/request": "^2.48.8",
@@ -101,7 +101,7 @@
         "time-grunt": "^2.0.0",
         "ts-jest": "^28.0.7",
         "typescript": "^4.7.4",
-        "yarn-audit-fix": "^9.3.2"
+        "yarn-audit-fix": "^9.3.3"
     },
     "resolutions": {
         "grunt-connect-proxy/**/http-proxy": "~1.18.1",

server/jobs/scheduler.ts

@@ -85,7 +85,7 @@ export class Task {
 
         this.job.run().then(result => {
             done(TaskState.IDLE, result);
-        }).catch((err: any) => {
+        }).catch(err => {
             Logger.tag('jobs').error("Job %s failed: %s", this.name, err);
             done(TaskState.FAILED, null);
         });

server/logger.test.ts

@@ -1,14 +1,25 @@
-import {LogLevel, LogLevels, isLogLevel} from "./types";
+import {isLogLevel, isUndefined, LoggingConfig, LogLevel, LogLevels} from "./types";
 import {ActivatableLoggerImpl} from "./logger";
-import _ from "lodash";
+
+function withDefault<T>(value: T | undefined, defaultValue: T): T {
+    return isUndefined(value) ? defaultValue : value;
+}
 
 class TestableLogger extends ActivatableLoggerImpl {
     private logs: any[][] = [];
 
-    constructor(enabled?: boolean) {
+    constructor(
+        enabled?: boolean,
+        debug?: boolean,
+        profile?: boolean,
+    ) {
         super();
         this.init(
-            enabled === false ? false : true, // default is true
+            new LoggingConfig(
+                withDefault(enabled, true),
+                withDefault(debug, true),
+                withDefault(profile, true),
+            ),
             (...args: any[]): void => this.doLog(...args)
         );
     }
@@ -43,6 +54,7 @@ function parseLogEntry(logEntry: any[]): ParsedLogEntry {
         );
     }
 
+    // noinspection RegExpRedundantEscape
     const regexp = /^\d{4}-\d{2}-\d{2} \d{2}:\d{2}:\d{2} ([A-Z]+) - (\[[^\]]*\])? *(.*)$/;
     const groups = logMessage.match(regexp);
     if (groups === null || groups.length < 4) {
@@ -59,7 +71,7 @@ function parseLogEntry(logEntry: any[]): ParsedLogEntry {
     }
 
     const tagsStr = groups[2].substring(1, groups[2].length - 1);
-    const tags = tagsStr ? _.split(tagsStr, ", ") : [];
+    const tags = tagsStr ? tagsStr.split(", "): [];
     const message = groups[3];
     const args = logEntry.slice(1);
 
@@ -188,3 +200,56 @@ for (const level of LogLevels) {
     });
 }
 
+test(`should not log debug message with disabled debugging`, () => {
+    // given
+    const logger = new TestableLogger(true, false, true);
+
+    // when
+    logger.tag("tag").debug("message");
+
+    // then
+    expect(parseLogs(logger.getLogs())).toEqual([]);
+});
+
+test(`should log profile message with disabled debugging`, () => {
+    // given
+    const logger = new TestableLogger(true, false, true);
+
+    // when
+    logger.tag("tag").profile("message");
+
+    // then
+    expect(parseLogs(logger.getLogs())).toEqual([{
+        level: "profile",
+        tags: ["tag"],
+        message: "message",
+        args: [],
+    }]);
+});
+
+test(`should not log profile message with disabled profiling`, () => {
+    // given
+    const logger = new TestableLogger(true, true, false);
+
+    // when
+    logger.tag("tag").profile("message");
+
+    // then
+    expect(parseLogs(logger.getLogs())).toEqual([]);
+});
+
+test(`should log debug message with disabled profiling`, () => {
+    // given
+    const logger = new TestableLogger(true, true, false);
+
+    // when
+    logger.tag("tag").debug("message");
+
+    // then
+    expect(parseLogs(logger.getLogs())).toEqual([{
+        level: "debug",
+        tags: ["tag"],
+        message: "message",
+        args: [],
+    }]);
+});

server/logger.ts

@@ -1,40 +1,43 @@
-import {Logger, TaggedLogger, LogLevel} from './types';
+import {isString, Logger, LoggingConfig, LogLevel, TaggedLogger} from './types';
 import moment from 'moment';
-import _ from 'lodash';
 
 export type LoggingFunction = (...args: any[]) => void;
 
 const noopTaggedLogger: TaggedLogger = {
-    log(level: LogLevel, ...args: any[]): void {},
+    log(_level: LogLevel, ..._args: any[]): void {},
-    debug(...args: any[]): void {},
+    debug(..._args: any[]): void {},
-    info(...args: any[]): void {},
+    info(..._args: any[]): void {},
-    warn(...args: any[]): void {},
+    warn(..._args: any[]): void {},
-    error(...args: any[]): void {},
+    error(..._args: any[]): void {},
-    profile(...args: any[]): void {},
+    profile(..._args: any[]): void {},
 };
 
 export interface ActivatableLogger extends Logger {
-    init(enabled: boolean, loggingFunction?: LoggingFunction): void;
+    init(config: LoggingConfig, loggingFunction?: LoggingFunction): void;
 }
 
+/**
+ * TODO: Check if LoggingConfig.debug and LoggingConfig.profile are handled.
+ */
 export class ActivatableLoggerImpl implements ActivatableLogger {
-    private enabled: boolean = false;
+    private config: LoggingConfig = new LoggingConfig(false, false, false);
     private loggingFunction: LoggingFunction = console.info;
 
-    init(enabled: boolean, loggingFunction?: LoggingFunction): void {
+    init(config: LoggingConfig, loggingFunction?: LoggingFunction): void {
-        const config = require('./config').config;
+        this.config = config;
-        this.enabled = enabled;
         this.loggingFunction = loggingFunction || console.info;
     }
 
     tag(...tags: string[]): TaggedLogger {
-        if (this.enabled) {
+        if (this.config.enabled) {
+            const debug = this.config.debug;
+            const profile = this.config.profile;
             const loggingFunction = this.loggingFunction;
             return {
                 log(level: LogLevel, ...args: any[]): void {
                     const timeStr = moment().format('YYYY-MM-DD HH:mm:ss');
                     const levelStr = level.toUpperCase();
-                    const tagsStr = tags ? '[' + _.join(tags, ', ') + ']' : '';
+                    const tagsStr = tags ? '[' + tags.join(', ') + ']' : '';
                     const messagePrefix = `${timeStr} ${levelStr} - ${tagsStr}`;
 
                     // Make sure to only replace %s, etc. in real log message
@@ -42,7 +45,7 @@ export class ActivatableLoggerImpl implements ActivatableLogger {
                     const escapedMessagePrefix = messagePrefix.replace(/%/g, '%%');
 
                     let message = '';
-                    if (args && _.isString(args[0])) {
+                    if (args && isString(args[0])) {
                         message = args[0];
                         args.shift();
                     }
@@ -53,7 +56,9 @@ export class ActivatableLoggerImpl implements ActivatableLogger {
                     loggingFunction(logStr, ...args);
                 },
                 debug(...args: any[]): void {
+                    if (debug) {
                         this.log('debug', ...args);
+                    }
                 },
                 info(...args: any[]): void {
                     this.log('info', ...args);
@@ -65,7 +70,9 @@ export class ActivatableLoggerImpl implements ActivatableLogger {
                     this.log('error', ...args);
                 },
                 profile(...args: any[]): void {
+                    if (profile) {
                         this.log('profile', ...args);
+                    }
                 },
             }
         } else {

server/mail/index.ts

@@ -0,0 +1,29 @@
+import {createTransport, Transporter} from "nodemailer";
+import {config} from "../config";
+import * as MailTemplateService from "../services/mailTemplateService";
+import Mail from "nodemailer/lib/mailer";
+import SMTPTransport from "nodemailer/lib/smtp-transport";
+
+let transporterSingleton: Transporter | null = null;
+
+function transporter() {
+    if (!transporterSingleton) {
+        const options = {
+            ...config.server.email.smtp,
+            pool: true,
+        };
+        transporterSingleton = createTransport(new SMTPTransport(options));
+
+        MailTemplateService.configureTransporter(transporterSingleton);
+    }
+
+    return transporterSingleton;
+}
+
+export function init(): void {
+    transporter();
+}
+
+export async function send(options: Mail.Options): Promise<void> {
+    await transporter().sendMail(options);
+}

server/main.ts

@@ -5,17 +5,18 @@ import * as db from "./db/database"
 import * as scheduler from "./jobs/scheduler"
 import * as router from "./router"
 import * as app from "./app"
+import * as mail from "./mail";
 
 app.init();
-Logger.init(config.server.logging.enabled);
+Logger.init(config.server.logging);
 Logger.tag('main', 'startup').info('Server starting up...');
 
 async function main() {
     Logger.tag('main').info('Initializing...');
 
     await db.init();
+    mail.init();
     scheduler.init();
-
     router.init();
 
     app.app.listen(config.server.port, '::');

server/resources/monitoringResource.ts

@@ -1,5 +1,3 @@
-import _ from "lodash";
-
 import CONSTRAINTS from "../validation/constraints";
 import ErrorTypes from "../utils/errorTypes";
 import * as MonitoringService from "../services/monitoringService";
@@ -12,13 +10,14 @@ import {isMonitoringToken, JSONObject, MonitoringResponse, MonitoringToken, toMo
 
 const isValidToken = forConstraint(CONSTRAINTS.token, false);
 
+// FIXME: Get rid of any
 async function doGetAll(req: Request): Promise<{ total: number, result: any }> {
     const restParams = await Resources.getValidRestParams('list', null, req);
     const {monitoringStates, total} = await MonitoringService.getAll(restParams);
     return {
         total,
-        result: _.map(monitoringStates, function (state) {
+        result: monitoringStates.map(state => {
-            state.mapId = _.toLower(state.mac).replace(/:/g, '');
+            state.mapId = state.mac.toLowerCase().replace(/:/g, "");
             return state;
         })
     };

server/resources/nodeResource.ts

@@ -1,5 +1,3 @@
-import _ from "lodash";
-
 import Constraints from "../validation/constraints";
 import ErrorTypes from "../utils/errorTypes";
 import * as MonitoringService from "../services/monitoringService";
@@ -12,13 +10,17 @@ import {Request, Response} from "express";
 import {
     CreateOrUpdateNode,
     DomainSpecificNodeResponse,
+    isCreateOrUpdateNode,
     isNodeSortField,
-    isToken, JSONObject,
+    isString,
+    isToken,
+    isUndefined,
+    JSONObject,
+    JSONValue,
     MAC,
     NodeResponse,
     NodeStateData,
     NodeTokenResponse,
-    StoredNode,
     toDomainSpecificNodeResponse,
     Token,
     toNodeResponse,
@@ -27,16 +29,27 @@ import {
 
 const nodeFields = ['hostname', 'key', 'email', 'nickname', 'mac', 'coords', 'monitoring'];
 
-function getNormalizedNodeData(reqData: any): CreateOrUpdateNode {
+function getNormalizedNodeData(reqData: JSONObject): CreateOrUpdateNode {
     const node: { [key: string]: any } = {};
-    _.each(nodeFields, function (field) {
+    for (const field of nodeFields) {
-        let value = normalizeString(reqData[field]);
+        let value: JSONValue | undefined = reqData[field];
+        if (isString(value)) {
+            value = normalizeString(value);
             if (field === 'mac') {
                 value = normalizeMac(value as MAC);
             }
+        }
+
+        if (!isUndefined(value)) {
             node[field] = value;
-    });
+        }
-    return node as CreateOrUpdateNode;
+    }
+
+    if (isCreateOrUpdateNode(node)) {
+        return node;
+    }
+
+    throw {data: "Invalid node data.", type: ErrorTypes.badRequest};
 }
 
 const isValidNode = forConstraints(Constraints.node, false);
@@ -90,15 +103,15 @@ async function doGetAll(req: Request): Promise<{ total: number; pageNodes: any }
 
     const nodes = await NodeService.getAllNodes();
 
-    const realNodes = _.filter(nodes, node =>
+    const realNodes = nodes.filter(node =>
         // We ignore nodes without tokens as those are only manually added ones like gateways.
-        !!node.token
+        !!node.token // FIXME: As node.token may not be undefined or null here, handle this when loading!
     );
 
-    const macs: MAC[] = _.map(realNodes, (node: StoredNode): MAC => node.mac);
+    const macs: MAC[] = realNodes.map(node => node.mac);
     const nodeStateByMac = await MonitoringService.getByMacs(macs);
 
-    const domainSpecificNodes: DomainSpecificNodeResponse[] = _.map(realNodes, (node: StoredNode): DomainSpecificNodeResponse => {
+    const domainSpecificNodes: DomainSpecificNodeResponse[] = realNodes.map(node => {
         const nodeState: NodeStateData = nodeStateByMac[node.mac] || {};
         return toDomainSpecificNodeResponse(node, nodeState);
     });

server/resources/taskResource.ts

@@ -1,9 +1,7 @@
-import _ from "lodash";
-
 import CONSTRAINTS from "../validation/constraints";
 import ErrorTypes from "../utils/errorTypes";
 import * as Resources from "../utils/resources";
-import {Entity, handleJSONWithData, RequestData} from "../utils/resources";
+import {handleJSONWithData, RequestData} from "../utils/resources";
 import {getTasks, Task, TaskState} from "../jobs/scheduler";
 import {normalizeString} from "../utils/strings";
 import {forConstraint} from "../validation/validator";
@@ -12,18 +10,18 @@ import {isString, isTaskSortField} from "../types";
 
 const isValidId = forConstraint(CONSTRAINTS.id, false);
 
-interface TaskResponse {
+type TaskResponse = {
-    id: number,
+    id: number;
-    name: string,
+    name: string;
-    description: string,
+    description: string;
-    schedule: string,
+    schedule: string;
-    runningSince: number | null,
+    runningSince: number | null;
-    lastRunStarted: number | null,
+    lastRunStarted: number | null;
-    lastRunDuration: number | null,
+    lastRunDuration: number | null;
-    state: string,
+    state: string;
-    result: string | null,
+    result: string | null;
-    message: string | null,
+    message: string | null;
-    enabled: boolean,
+    enabled: boolean;
 }
 
 function toTaskResponse(task: Task): TaskResponse {
@@ -77,11 +75,11 @@ async function setTaskEnabled(data: RequestData, enable: boolean): Promise<TaskR
     return toTaskResponse(task);
 }
 
-async function doGetAll(req: Request): Promise<{ total: number, pageTasks: Entity[] }> {
+async function doGetAll(req: Request): Promise<{ total: number, pageTasks: Task[] }> {
     const restParams = await Resources.getValidRestParams('list', null, req);
 
     const tasks = Resources.sort(
-        _.values(getTasks()),
+        Object.values(getTasks()),
         isTaskSortField,
         restParams
     );
@@ -104,7 +102,7 @@ export function getAll(req: Request, res: Response): void {
     doGetAll(req)
         .then(({total, pageTasks}) => {
             res.set('X-Total-Count', total.toString(10));
-            Resources.success(res, _.map(pageTasks, toTaskResponse));
+            Resources.success(res, pageTasks.map(toTaskResponse));
         })
         .catch(err => Resources.error(res, err));
 }

server/services/mailService.ts

@@ -1,17 +1,15 @@
 import _ from "lodash";
-import deepExtend from "deep-extend";
 import moment, {Moment} from "moment";
-import {createTransport, Transporter} from "nodemailer";
-
-import {config} from "../config";
 import {db} from "../db/database";
 import Logger from "../logger";
 import * as MailTemplateService from "./mailTemplateService";
 import * as Resources from "../utils/resources";
 import {RestParams} from "../utils/resources";
 import {
-    EmailAddress, isJSONObject,
+    EmailAddress,
-    isMailSortField, isMailType, JSONObject,
+    isJSONObject,
+    isMailSortField,
+    isMailType,
     Mail,
     MailData,
     MailId,
@@ -21,6 +19,7 @@ import {
     UnixTimestampSeconds
 } from "../types";
 import ErrorTypes from "../utils/errorTypes";
+import {send} from "../mail";
 
 type EmaiQueueRow = {
     id: MailId,
@@ -35,26 +34,6 @@ type EmaiQueueRow = {
 
 const MAIL_QUEUE_DB_BATCH_SIZE = 50;
 
-// TODO: Extract transporter into own module and initialize during main().
-let transporterSingleton: Transporter | null = null;
-
-function transporter() {
-    if (!transporterSingleton) {
-        transporterSingleton = createTransport(deepExtend(
-            {},
-            config.server.email.smtp,
-            {
-                transport: 'smtp',
-                pool: true
-            } as JSONObject
-        ));
-
-        MailTemplateService.configureTransporter(transporterSingleton);
-    }
-
-    return transporterSingleton;
-}
-
 async function sendMail(options: Mail): Promise<void> {
     Logger
         .tag('mail', 'queue')
@@ -73,7 +52,7 @@ async function sendMail(options: Mail): Promise<void> {
         html: renderedTemplate.body
     };
 
-    await transporter().sendMail(mailOptions);
+    await send(mailOptions);
 
     Logger.tag('mail', 'queue').info('Mail[%d] has been send.', options.id);
 }
@@ -170,7 +149,7 @@ export async function getPendingMails(restParams: RestParams): Promise<{ mails:
 
     const mails = await db.all(
         'SELECT * FROM email_queue WHERE ' + filter.query,
-        _.concat([], filter.params),
+        filter.params,
     );
 
     return {

server/services/mailTemplateService.ts

@@ -97,7 +97,7 @@ export async function render(mailOptions: Mail): Promise<{subject: string, body:
 
     try {
         return {
-            subject: _.trim(_.template(subject.toString())(data)),
+            subject: _.template(subject.toString())(data).trim(),
             body: _.template(body.toString())(data)
         };
     } catch (error) {

server/services/monitoringService.test.ts

@@ -1,4 +1,3 @@
-import moment from 'moment';
 import {ParsedNode, parseNode, parseNodesJson} from "./monitoringService";
 import {Domain, MAC, OnlineState, Site, UnixTimestampSeconds} from "../types";
 import Logger from '../logger';
@@ -205,8 +204,8 @@ test('parseNode() should succeed parsing node without site and domain', () => {
         importTimestamp: importTimestamp,
         state: OnlineState.ONLINE,
         lastSeen: TIMESTAMP_VALID,
-        site: "<unknown-site>" as Site,
+        site: undefined,
-        domain: "<unknown-domain>" as Domain,
+        domain: undefined,
     };
     expect(parseNode(importTimestamp, nodeData)).toEqual(expectedParsedNode);
 });

server/services/monitoringService.ts

@@ -19,8 +19,13 @@ import {
     Domain,
     DurationSeconds,
     Hostname,
+    isBoolean,
+    isDomain,
     isMonitoringSortField,
     isOnlineState,
+    isSite,
+    isString,
+    isUndefined,
     MAC,
     MailType,
     MonitoringSortField,
@@ -71,8 +76,8 @@ export type ParsedNode = {
     importTimestamp: UnixTimestampSeconds,
     state: OnlineState,
     lastSeen: UnixTimestampSeconds,
-    site: Site,
+    site?: Site,
-    domain: Domain,
+    domain?: Domain,
 };
 
 export type NodesParsingResult = {
@@ -162,7 +167,7 @@ async function storeNodeInformation(nodeData: ParsedNode, node: StoredNode): Pro
 
     const row = await db.get('SELECT * FROM node_state WHERE mac = ?', [node.mac]);
 
-    if (_.isUndefined(row)) {
+    if (isUndefined(row)) {
         return await insertNodeInformation(nodeData, node);
     } else {
         return await updateNodeInformation(nodeData, node, row);
@@ -171,7 +176,6 @@ async function storeNodeInformation(nodeData: ParsedNode, node: StoredNode): Pro
 
 const isValidMac = forConstraint(CONSTRAINTS.node.mac, false);
 
-// TODO: Use sparkson for JSON parsing.
 export function parseNode(importTimestamp: UnixTimestampSeconds, nodeData: any): ParsedNode {
     if (!_.isPlainObject(nodeData)) {
         throw new Error(
@@ -186,7 +190,7 @@ export function parseNode(importTimestamp: UnixTimestampSeconds, nodeData: any):
     }
 
     const nodeId = nodeData.nodeinfo.node_id;
-    if (!nodeId || !_.isString(nodeId)) {
+    if (!nodeId || !isString(nodeId)) {
         throw new Error(
             `Invalid node id of type "${typeof nodeId}": ${nodeId}`
         );
@@ -210,7 +214,7 @@ export function parseNode(importTimestamp: UnixTimestampSeconds, nodeData: any):
             'Node ' + nodeId + ': Unexpected flags type: ' + (typeof nodeData.flags)
         );
     }
-    if (!_.isBoolean(nodeData.flags.online)) {
+    if (!isBoolean(nodeData.flags.online)) {
         throw new Error(
             'Node ' + nodeId + ': Unexpected flags.online type: ' + (typeof nodeData.flags.online)
         );
@@ -224,14 +228,14 @@ export function parseNode(importTimestamp: UnixTimestampSeconds, nodeData: any):
         );
     }
 
-    let site = "<unknown-site>" as Site; // FIXME: Handle this
+    let site: Site | undefined;
-    if (_.isPlainObject(nodeData.nodeinfo.system) && _.isString(nodeData.nodeinfo.system.site_code)) {
+    if (_.isPlainObject(nodeData.nodeinfo.system) && isSite(nodeData.nodeinfo.system.site_code)) {
-        site = nodeData.nodeinfo.system.site_code as Site;
+        site = nodeData.nodeinfo.system.site_code;
     }
 
-    let domain = "<unknown-domain>" as Domain; // FIXME: Handle this
+    let domain: Domain | undefined;
-    if (_.isPlainObject(nodeData.nodeinfo.system) && _.isString(nodeData.nodeinfo.system.domain_code)) {
+    if (_.isPlainObject(nodeData.nodeinfo.system) && isDomain(nodeData.nodeinfo.system.domain_code)) {
-        domain = nodeData.nodeinfo.system.domain_code as Domain;
+        domain = nodeData.nodeinfo.system.domain_code;
     }
 
     return {
@@ -244,7 +248,6 @@ export function parseNode(importTimestamp: UnixTimestampSeconds, nodeData: any):
     };
 }
 
-// TODO: Use sparkson for JSON parsing.
 export function parseNodesJson(body: string): NodesParsingResult {
     Logger.tag('monitoring', 'information-retrieval').debug('Parsing nodes.json...');
 
@@ -556,6 +559,7 @@ async function retrieveNodeInformationForUrls(urls: string[]): Promise<RetrieveN
     }
 }
 
+// FIXME: Replace any[] by type.
 export async function getAll(restParams: RestParams): Promise<{ total: number, monitoringStates: any[] }> {
     const filterFields = [
         'hostname',
@@ -569,7 +573,7 @@ export async function getAll(restParams: RestParams): Promise<{ total: number, m
 
     const row = await db.get<{ total: number }>(
         'SELECT count(*) AS total FROM node_state WHERE ' + where.query,
-        _.concat([], where.params),
+        where.params,
     );
 
     const total = row?.total || 0;
@@ -583,7 +587,7 @@ export async function getAll(restParams: RestParams): Promise<{ total: number, m
 
     const monitoringStates = await db.all(
         'SELECT * FROM node_state WHERE ' + filter.query,
-        _.concat([], filter.params),
+        filter.params,
     );
 
     return {monitoringStates, total};
@@ -601,7 +605,7 @@ export async function getByMacs(macs: MAC[]): Promise<Record<MAC, NodeStateData>
 
         const rows = await db.all<NodeStateRow>(
             'SELECT * FROM node_state WHERE ' + inCondition.query,
-            _.concat([], inCondition.params),
+            inCondition.params,
         );
 
         for (const row of rows) {
@@ -611,8 +615,8 @@ export async function getByMacs(macs: MAC[]): Promise<Record<MAC, NodeStateData>
             }
 
             nodeStateByMac[row.mac] = {
-                site: row.site || "<unknown-site>" as Site, // FIXME: Handle this
+                site: row.site || undefined,
-                domain: row.domain || "<unknown-domain>" as Domain, // FIXME: Handle this
+                domain: row.domain || undefined,
                 state: onlineState,
             };
         }
@@ -732,7 +736,7 @@ async function deleteNeverOnlineNodesBefore(deleteBefore: UnixTimestampSeconds):
             deletionCandidates.length
         );
 
-    const deletionCandidateMacs: MAC[] = _.map(deletionCandidates, node => node.mac);
+    const deletionCandidateMacs: MAC[] = deletionCandidates.map(node => node.mac);
     const chunks: MAC[][] = _.chunk(deletionCandidateMacs, NEVER_ONLINE_NODES_DELETION_CHUNK_SIZE);
 
     Logger
@@ -751,10 +755,7 @@ async function deleteNeverOnlineNodesBefore(deleteBefore: UnixTimestampSeconds):
                 ' MACs for deletion.'
             );
 
-        const placeholders = _.join(
+        const placeholders = macs.map(() => '?').join(',');
-            _.map(macs, () => '?'),
-            ','
-        );
 
         const rows: { mac: MAC }[] = await db.all(
             `SELECT * FROM node_state WHERE mac IN (${placeholders})`,
@@ -771,7 +772,7 @@ async function deleteNeverOnlineNodesBefore(deleteBefore: UnixTimestampSeconds):
                 ' nodes found in monitoring database. Those should be skipped.'
             );
 
-        const seenMacs: MAC[] = _.map(rows, (row: { mac: MAC }) => row.mac as MAC);
+        const seenMacs: MAC[] = rows.map(row => row.mac);
         const neverSeenMacs = _.difference(macs, seenMacs);
 
         Logger

server/services/nodeService.ts

@@ -1,4 +1,3 @@
-import _ from "lodash";
 import async from "async";
 import crypto from "crypto";
 import oldFs, {promises as fs} from "graceful-fs";
@@ -18,7 +17,12 @@ import {
     EmailAddress,
     FastdKey,
     Hostname,
+    isFastdKey,
+    isHostname,
+    isMAC,
+    isMonitoringToken,
     isStoredNode,
+    isToken,
     MAC,
     MailType,
     MonitoringState,
@@ -29,6 +33,7 @@ import {
     StoredNode,
     Token,
     toUnixTimestampSeconds,
+    TypeGuard,
     unhandledEnumField,
     UnixTimestampMilliseconds,
     UnixTimestampSeconds
@@ -38,21 +43,19 @@ import util from "util";
 const pglob = util.promisify(glob);
 
 type NodeFilter = {
-    // TODO: Newtype
+    hostname?: Hostname,
-    hostname?: string,
     mac?: MAC,
     key?: FastdKey,
     token?: Token,
     monitoringToken?: MonitoringToken,
 }
 
-// TODO: Newtypes?
 type NodeFilenameParsed = {
-    hostname?: string,
+    hostname?: Hostname,
-    mac?: string,
+    mac?: MAC,
-    key?: string,
+    key?: FastdKey,
-    token?: string,
+    token?: Token,
-    monitoringToken?: string,
+    monitoringToken?: MonitoringToken,
 }
 
 enum LINE_PREFIX {
@@ -66,7 +69,6 @@ enum LINE_PREFIX {
     MONITORING_TOKEN = "# Monitoring-Token: ",
 }
 
-const filenameParts = ['hostname', 'mac', 'key', 'token', 'monitoringToken'];
 
 function generateToken<Type extends string & { readonly __tag: symbol } = never>(): Type {
     return crypto.randomBytes(8).toString('hex') as Type;
@@ -109,16 +111,20 @@ async function findFilesInPeersPath(): Promise<string[]> {
 }
 
 function parseNodeFilename(filename: string): NodeFilenameParsed {
-    const parts = _.split(filename, '@', filenameParts.length);
+    const parts = filename.split('@', 5);
-    const parsed: { [key: string]: string | undefined } = {};
+
-    const zippedParts = _.zip<string, string>(filenameParts, parts);
+    function get<T>(isT: TypeGuard<T>, index: number): T | undefined {
-    _.each(zippedParts, part => {
+        const value = index >= 0 && index < parts.length ? parts[index] : undefined;
-        const key = part[0];
+        return isT(value) ? value : undefined;
-        if (key) {
-            parsed[key] = part[1];
     }
-    });
+
-    return parsed;
+    return {
+        hostname: get(isHostname, 0),
+        mac: get(isMAC, 1),
+        key: get(isFastdKey, 2),
+        token: get(isToken, 3),
+        monitoringToken: get(isMonitoringToken, 4),
+    };
 }
 
 function isDuplicate(filter: NodeFilter, token?: Token): boolean {
@@ -566,14 +572,14 @@ export async function fixNodeFilenames(): Promise<void> {
 
 export async function findNodesModifiedBefore(timestamp: UnixTimestampSeconds): Promise<StoredNode[]> {
     const nodes = await getAllNodes();
-    return _.filter(nodes, node => node.modifiedAt < timestamp);
+    return nodes.filter(node => node.modifiedAt < timestamp);
 }
 
 export async function getNodeStatistics(): Promise<NodeStatistics> {
     const nodes = await getAllNodes();
 
     const nodeStatistics: NodeStatistics = {
-        registered: _.size(nodes),
+        registered: nodes.length,
         withVPN: 0,
         withCoords: 0,
         monitoring: {

server/types/config.ts

@@ -1,17 +1,21 @@
 import {ArrayField, Field, RawJsonField} from "sparkson"
-import {ClientConfig, JSONObject, Url} from "./shared";
+import {ClientConfig, DurationMilliseconds, isString, toIsNewtype, Url} from "./shared";
-
-// TODO: Replace string types by more specific types like URL, Password, etc.
 
 export type Username = string & { readonly __tag: unique symbol };
+export const isUsername = toIsNewtype(isString, "" as Username);
+
 export type CleartextPassword = string & { readonly __tag: unique symbol };
+export const isCleartextPassword = toIsNewtype(isString, "" as CleartextPassword);
+
 export type PasswordHash = string & { readonly __tag: unique symbol };
+export const isPasswordHash = toIsNewtype(isString, "" as PasswordHash);
 
 export class UsersConfig {
     constructor(
         @Field("user") public username: Username,
         @Field("passwordHash") public passwordHash: PasswordHash,
-    ) {}
+    ) {
+    }
 }
 
 export class LoggingConfig {
@@ -19,51 +23,79 @@ export class LoggingConfig {
         @Field("enabled") public enabled: boolean,
         @Field("debug") public debug: boolean,
         @Field("profile") public profile: boolean,
-    ) {}
+    ) {
+    }
 }
 
 export class InternalConfig {
     constructor(
         @Field("active") public active: boolean,
         @ArrayField("users", UsersConfig) public users: UsersConfig[],
-    ) {}
+    ) {
+    }
+}
+
+export class SMTPAuthConfig {
+    constructor(
+        @Field("user") public user: Username,
+        @Field("pass") public pass: CleartextPassword,
+    ) {
+    }
+}
+
+// For details see: https://nodemailer.com/smtp/
+export class SMTPConfig {
+    constructor(
+        @Field("host") public host?: string,
+        @Field("port") public port?: number,
+        @Field("auth") public auth?: SMTPAuthConfig,
+        @Field("secure") public secure?: boolean,
+        @Field("ignoreTLS") public ignoreTLS?: boolean,
+        @Field("requireTLS") public requireTLS?: boolean,
+        @Field("opportunisticTLS") public opportunisticTLS?: boolean,
+        @Field("name") public name?: string,
+        @Field("localAddress") public localAddress?: string,
+        @Field("connectionTimeout") public connectionTimeout?: DurationMilliseconds,
+        @Field("greetingTimeout") public greetingTimeout?: DurationMilliseconds,
+        @Field("socketTimeout") public socketTimeout?: DurationMilliseconds,
+    ) {
+    }
 }
 
 export class EmailConfig {
     constructor(
         @Field("from") public from: string,
-
+        @RawJsonField("smtp") public smtp: SMTPConfig,
-        // For details see: https://nodemailer.com/2-0-0-beta/setup-smtp/
+    ) {
-        @RawJsonField("smtp") public smtp: JSONObject,
+    }
-    ) {}
 }
 
 export class ServerMapConfig {
     constructor(
         @ArrayField("nodesJsonUrl", String) public nodesJsonUrl: Url[],
-    ) {}
+    ) {
+    }
 }
 
 export class ServerConfig {
     constructor(
         @Field("baseUrl") public baseUrl: Url,
         @Field("port") public port: number,
-
         @Field("databaseFile") public databaseFile: string,
         @Field("peersPath") public peersPath: string,
-
         @Field("logging") public logging: LoggingConfig,
         @Field("internal") public internal: InternalConfig,
         @Field("email") public email: EmailConfig,
         @Field("map") public map: ServerMapConfig,
-
         @Field("rootPath", true, undefined, "/") public rootPath: string,
-    ) {}
+    ) {
+    }
 }
 
 export class Config {
     constructor(
         @Field("server") public server: ServerConfig,
         @Field("client") public client: ClientConfig,
-    ) {}
+    ) {
+    }
 }

server/types/index.ts

@@ -3,6 +3,7 @@ import {
     Domain,
     DomainSpecificNodeResponse,
     EmailAddress,
+    isNumber,
     JSONObject,
     MonitoringResponse,
     MonitoringState,
@@ -13,6 +14,7 @@ import {
     Site,
     StoredNode,
     toIsEnum,
+    toIsNewtype,
 } from "./shared";
 
 export * from "./config";
@@ -21,8 +23,8 @@ export * from "./logger";
 export * from "./shared";
 
 export type NodeStateData = {
-    site: Site,
+    site?: Site,
-    domain: Domain,
+    domain?: Domain,
     state: OnlineState,
 }
 
@@ -90,12 +92,13 @@ export function toMonitoringResponse(node: StoredNode): MonitoringResponse {
     };
 }
 
-// TODO: Complete interface / class declaration.
 export type NodeSecrets = {
     monitoringToken?: MonitoringToken,
 };
 
 export type MailId = number & { readonly __tag: unique symbol };
+export const isMailId = toIsNewtype(isNumber, NaN as MailId);
+
 export type MailData = JSONObject;
 
 export enum MailType {
@@ -108,12 +111,11 @@ export enum MailType {
 
 export const isMailType = toIsEnum(MailType);
 
-export interface Mail {
+export type Mail = {
-    id: MailId,
+    id: MailId;
-    email: MailType,
+    email: MailType;
-    sender: EmailAddress,
+    sender: EmailAddress;
-    recipient: EmailAddress,
+    recipient: EmailAddress;
-    data: MailData,
+    data: MailData;
-    failures: number,
+    failures: number;
 }
-

server/types/shared.ts

@@ -85,6 +85,13 @@ export function isString(arg: unknown): arg is string {
     return typeof arg === "string"
 }
 
+export function toIsNewtype<
+    Type extends Value & { readonly __tag: symbol },
+    Value,
+>(isValue: TypeGuard<Value>, _example: Type): TypeGuard<Type> {
+    return (arg: unknown): arg is Type => isValue(arg);
+}
+
 export function isNumber(arg: unknown): arg is number {
     return typeof arg === "number"
 }
@@ -109,18 +116,22 @@ export function toIsEnum<E>(enumDef: E): EnumTypeGuard<E> {
     return (arg): arg is EnumValue<E> => Object.values(enumDef).includes(arg as [keyof E]);
 }
 
+export function isRegExp(arg: unknown): arg is RegExp {
+    return isObject(arg) && arg instanceof RegExp;
+}
+
 export function isOptional<T>(arg: unknown, isT: TypeGuard<T>): arg is (T | undefined) {
     return arg === undefined || isT(arg);
 }
 
 export type Url = string & { readonly __tag: unique symbol };
-export const isUrl = isString;
+export const isUrl = toIsNewtype(isString, "" as Url);
 
 export type Version = string & { readonly __tag: unique symbol };
-export const isVersion = isString;
+export const isVersion = toIsNewtype(isString, "" as Version);
 
 export type EmailAddress = string & { readonly __tag: unique symbol };
-export const isEmailAddress = isString;
+export const isEmailAddress = toIsNewtype(isString, "" as EmailAddress);
 
 export type NodeStatistics = {
     registered: number;
@@ -321,31 +332,33 @@ export function isClientConfig(arg: unknown): arg is ClientConfig {
     );
 }
 
-// TODO: Token type.
 export type Token = string & { readonly __tag: unique symbol };
-export const isToken = isString;
+export const isToken = toIsNewtype(isString, "" as Token);
 
 export type FastdKey = string & { readonly __tag: unique symbol };
-export const isFastdKey = isString;
+export const isFastdKey = toIsNewtype(isString, "" as FastdKey);
 
 export type MAC = string & { readonly __tag: unique symbol };
-export const isMAC = isString;
+export const isMAC = toIsNewtype(isString, "" as MAC);
 
 export type DurationSeconds = number & { readonly __tag: unique symbol };
-export const isDurationSeconds = isNumber;
+export const isDurationSeconds = toIsNewtype(isNumber, NaN as DurationSeconds);
+
+export type DurationMilliseconds = number & { readonly __tag: unique symbol };
+export const isDurationMilliseconds = toIsNewtype(isNumber, NaN as DurationMilliseconds);
 
 export type UnixTimestampSeconds = number & { readonly __tag: unique symbol };
-export const isUnixTimestampSeconds = isNumber;
+export const isUnixTimestampSeconds = toIsNewtype(isNumber, NaN as UnixTimestampSeconds);
 
 export type UnixTimestampMilliseconds = number & { readonly __tag: unique symbol };
-export const isUnixTimestampMilliseconds = isNumber;
+export const isUnixTimestampMilliseconds = toIsNewtype(isNumber, NaN as UnixTimestampMilliseconds);
 
 export function toUnixTimestampSeconds(ms: UnixTimestampMilliseconds): UnixTimestampSeconds {
     return Math.floor(ms) as UnixTimestampSeconds;
 }
 
 export type MonitoringToken = string & { readonly __tag: unique symbol };
-export const isMonitoringToken = isString;
+export const isMonitoringToken = toIsNewtype(isString, "" as MonitoringToken);
 
 export enum MonitoringState {
     ACTIVE = "active",
@@ -356,15 +369,16 @@ export enum MonitoringState {
 export const isMonitoringState = toIsEnum(MonitoringState);
 
 export type NodeId = string & { readonly __tag: unique symbol };
+export const isNodeId = toIsNewtype(isString, "" as NodeId);
 
-export type Hostname = string & { readonly __tag: unique symbol };
+export type Hostname = string & { readonly __tag: unique symbol }
-export const isHostname = isString;
+export const isHostname = toIsNewtype(isString, "" as Hostname);
 
 export type Nickname = string & { readonly __tag: unique symbol };
-export const isNickname = isString;
+export const isNickname = toIsNewtype(isString, "" as Nickname);
 
 export type Coordinates = string & { readonly __tag: unique symbol };
-export const isCoordinates = isString;
+export const isCoordinates = toIsNewtype(isString, "" as Coordinates);
 
 /**
  * Basic node data.
@@ -473,10 +487,10 @@ export enum OnlineState {
 export const isOnlineState = toIsEnum(OnlineState);
 
 export type Site = string & { readonly __tag: unique symbol };
-export const isSite = isString;
+export const isSite = toIsNewtype(isString, "" as Site);
 
 export type Domain = string & { readonly __tag: unique symbol };
-export const isDomain = isString;
+export const isDomain = toIsNewtype(isString, "" as Domain);
 
 /**
  * Represents a node in the context of a Freifunk site and domain.

server/utils/databaseUtil.ts

@@ -2,7 +2,7 @@ import _ from "lodash";
 
 export function inCondition<T>(field: string, list: T[]): {query: string, params: T[]} {
     return {
-        query: '(' + field + ' IN (' + _.join(_.times(list.length, _.constant('?')), ', ') + '))',
+        query: '(' + field + ' IN (' + _.times(list.length, () =>'?').join(', ') + '))',
         params: list,
     }
 }

server/utils/resources.ts

@@ -9,8 +9,12 @@ import {
     EnumTypeGuard,
     EnumValue,
     type GenericSortField,
-    isJSONObject, isNumber, isString, isUndefined,
+    isJSONObject,
+    isNumber,
+    isString,
+    isUndefined,
     JSONObject,
+    JSONValue,
     SortDirection,
     TypeGuard
 } from "../types";
@@ -36,7 +40,9 @@ export type OrderByClause = { query: string, params: any[] };
 export type LimitOffsetClause = { query: string, params: any[] };
 export type FilterClause = { query: string, params: any[] };
 
-function respond(res: Response, httpCode: number, data: any, type: string): void {
+function respond(res: Response, httpCode: number, data: string, type: "html"): void;
+function respond(res: Response, httpCode: number, data: JSONValue, type: "json"): void;
+function respond(res: Response, httpCode: number, data: JSONValue, type: "html" | "json"): void {
     switch (type) {
         case 'html':
             res.writeHead(httpCode, {'Content-Type': 'text/html'});
@@ -184,7 +190,7 @@ export function filter<E>(entities: E[], allowedFilterFields: string[], restPara
         if (!query) {
             return true;
         }
-        return _.some(allowedFilterFields, (field: string): boolean => {
+        return allowedFilterFields.some((field: string): boolean => {
             if (!query) {
                 return true;
             }
@@ -209,15 +215,15 @@ export function filter<E>(entities: E[], allowedFilterFields: string[], restPara
     const filters = restParams.filters;
 
     function filtersMatch(entity: Entity): boolean {
-        if (_.isEmpty(filters)) {
+        if (isUndefined(filters) || _.isEmpty(filters)) {
             return true;
         }
 
-        return _.every(filters, (value: any, key: string): boolean => {
+        return Object.entries(filters).every(([key, value]) => {
             if (isUndefined(value)) {
                 return true;
             }
-            if (_.startsWith(key, 'has')) {
+            if (key.startsWith('has')) {
                 const entityKey = key.substring(3, 4).toLowerCase() + key.substring(4);
                 return _.isEmpty(entity[entityKey]).toString() !== value;
             }
@@ -225,9 +231,7 @@ export function filter<E>(entities: E[], allowedFilterFields: string[], restPara
         });
     }
 
-    return _.filter(entities, function (entity) {
+    return entities.filter(entity => queryMatches(entity) && filtersMatch(entity));
-        return queryMatches(entity) && filtersMatch(entity);
-    });
 }
 
 export function sort<T extends Record<S, any>, S extends string>(entities: T[], isSortField: TypeGuard<S>, restParams: RestParams): T[] {
@@ -251,8 +255,7 @@ export function sort<T extends Record<S, any>, S extends string>(entities: T[],
         let order = 0;
         if (as < bs) {
             order = -1;
-        }
+        } else if (bs > as) {
-        else if (bs > as) {
             order = 1;
         }
 
@@ -262,7 +265,7 @@ export function sort<T extends Record<S, any>, S extends string>(entities: T[],
     return sorted;
 }
 
-export function getPageEntities(entities: Entity[], restParams: RestParams) {
+export function getPageEntities<Entity>(entities: Entity[], restParams: RestParams): Entity[] {
     const page = restParams._page;
     const perPage = restParams._perPage;
 
@@ -291,11 +294,11 @@ export function filterClause<S>(
 
     return {
         query: filter.query + ' ' + orderBy.query + ' ' + limitOffset.query,
-        params: _.concat(filter.params, orderBy.params, limitOffset.params)
+        params: [...filter.params, ...orderBy.params, ...limitOffset.params]
     };
 }
 
-export function success(res: Response, data: any) {
+export function success(res: Response, data: JSONValue) {
     respond(res, 200, data, 'json');
 }
 
@@ -303,7 +306,7 @@ export function successHtml(res: Response, html: string) {
     respond(res, 200, html, 'html');
 }
 
-export function error(res: Response, err: { data: any, type: { code: number } }) {
+export function error(res: Response, err: { data: JSONValue, type: { code: number } }) {
     respond(res, err.type.code, err.data, 'json');
 }
 

server/utils/strings.ts

@@ -1,8 +1,8 @@
 import _ from "lodash"
-import {MAC} from "../types";
+import {isString, MAC} from "../types";
 
 export function normalizeString(str: string): string {
-    return _.isString(str) ? str.trim().replace(/\s+/g, ' ') : str;
+    return isString(str) ? str.trim().replace(/\s+/g, ' ') : str;
 }
 
 export function normalizeMac(mac: MAC): MAC {

server/utils/time.ts

@@ -1,5 +1,4 @@
-import {DurationSeconds, UnixTimestampSeconds} from "../types";
+import {DurationSeconds, isString, UnixTimestampSeconds} from "../types";
-import _ from "lodash";
 import moment, {Moment} from "moment";
 
 export function now(): UnixTimestampSeconds {
@@ -45,7 +44,7 @@ export function formatTimestamp(timestamp: UnixTimestampSeconds): string {
 }
 
 export function parseTimestamp(timestamp: any): UnixTimestampSeconds | null {
-    if (!_.isString(timestamp)) {
+    if (!isString(timestamp)) {
         return null;
     }
     const parsed = moment.utc(timestamp);

server/utils/urlBuilder.ts

@@ -1,4 +1,3 @@
-import _ from "lodash"
 import {config} from "../config"
 import {MonitoringToken, Url} from "../types"
 
@@ -12,15 +11,10 @@ function formUrl(route: string, queryParams?: { [key: string]: string }): Url {
     }
     if (queryParams) {
         url += '?';
-        url += _.join(
+        url +=
-            _.map(
+            Object.entries(queryParams)
-                queryParams,
+                .map(([key, value]) => encodeURIComponent(key) + '=' + encodeURIComponent(value))
-                function (value, key) {
+                .join("&");
-                    return encodeURIComponent(key) + '=' + encodeURIComponent(value);
-                }
-            ),
-            '&'
-        );
     }
     return url as Url;
 }

server/validation/constraints.ts

@@ -1,6 +1,7 @@
 // ATTENTION: Those constraints are no longer the same file as for the client / admin interface.
 //            Make sure changes are also reflected in /shared/validation/constraints.js.
 
+// noinspection RegExpSimplifiable
 const CONSTRAINTS = {
     id:{
         type: 'string',

server/validation/validator.ts

@@ -1,7 +1,6 @@
-import _ from "lodash";
-
 import {parseInteger} from "../utils/strings";
 import Logger from "../logger";
+import {isBoolean, isNumber, isObject, isOptional, isRegExp, isString, toIsArray} from "../types";
 
 export interface Constraint {
     type: string,
@@ -21,111 +20,77 @@ export interface Constraint {
 export type Constraints = { [key: string]: Constraint };
 export type Values = { [key: string]: any };
 
-function isStringArray(arr: any): arr is string[] {
+export function isConstraint(arg: unknown): arg is Constraint {
-    return _.isArray(arr) && _.every(arr, (val: any) => _.isString(val));
+    if (!isObject(arg)) {
-}
-
-export function isConstraint(val: any): val is Constraint {
-    if (!_.isObject(val)) {
         return false;
     }
 
-    const constraint = val as {[key: string]: any};
+    const constraint = arg as Constraint;
-
+    return (
-    if (!("type" in constraint) || !_.isString(constraint.type)) {
+        isString(constraint.type) &&
-        return false;
+        // default?: any
-    }
+        isOptional(constraint.optional, isBoolean) &&
-
+        isOptional(constraint.allowed, toIsArray(isString)) &&
-    if ("optional" in constraint
+        isOptional(constraint.min, isNumber) &&
-        && !_.isUndefined(constraint.optional)
+        isOptional(constraint.max, isNumber) &&
-        && !_.isBoolean(constraint.optional)) {
+        isOptional(constraint.regex, isRegExp)
-        return false;
-    }
-
-    if ("allowed" in constraint
-        && !_.isUndefined(constraint.allowed)
-        && !isStringArray(constraint.allowed)) {
-        return false;
-    }
-
-    if ("min" in constraint
-        && !_.isUndefined(constraint.min)
-        && !_.isNumber(constraint.min)) {
-        return false;
-    }
-
-    if ("max" in constraint
-        && !_.isUndefined(constraint.max)
-        && !_.isNumber(constraint.max)) {
-        return false;
-    }
-
-    // noinspection RedundantIfStatementJS
-    if ("regex" in constraint
-        && !_.isUndefined(constraint.regex)
-        && !_.isRegExp(constraint.regex)) {
-        return false;
-    }
-
-    return true;
-}
-
-export function isConstraints(constraints: any): constraints is Constraints {
-    if (!_.isObject(constraints)) {
-        return false;
-    }
-
-    return _.every(
-        constraints,
-        (constraint: any, key: any) => _.isString(key) && isConstraint(constraint)
     );
 }
 
+export function isConstraints(constraints: unknown): constraints is Constraints {
+    if (!isObject(constraints)) {
+        return false;
+    }
+
+    return Object.entries(constraints).every(([key, constraint]) => isString(key) && isConstraint(constraint));
+}
+
 // TODO: sanitize input for further processing as specified by constraints (correct types, trimming, etc.)
 
-function isValidBoolean(value: any): boolean {
+function isValidBoolean(value: unknown): boolean {
-    return _.isBoolean(value) || value === 'true' || value === 'false';
+    return isBoolean(value) || value === 'true' || value === 'false';
 }
 
-function isValidNumber(constraint: Constraint, value: any): boolean {
+function isValidNumber(constraint: Constraint, value: unknown): boolean {
-    if (_.isString(value)) {
+    if (isString(value)) {
         value = parseInteger(value);
     }
 
-    if (!_.isNumber(value)) {
+    if (!isNumber(value)) {
         return false;
     }
 
-    if (_.isNaN(value) || !_.isFinite(value)) {
+    if (isNaN(value) || !isFinite(value)) {
         return false;
     }
 
-    if (_.isNumber(constraint.min) && value < constraint.min) {
+    if (isNumber(constraint.min) && value < constraint.min) {
         return false;
     }
 
     // noinspection RedundantIfStatementJS
-    if (_.isNumber(constraint.max) && value > constraint.max) {
+    if (isNumber(constraint.max) && value > constraint.max) {
         return false;
     }
 
     return true;
 }
 
-function isValidEnum(constraint: Constraint, value: any): boolean {
+function isValidEnum(constraint: Constraint, value: unknown): boolean {
-    if (!_.isString(value)) {
+    if (!isString(value)) {
         return false;
     }
 
-    return _.indexOf(constraint.allowed, value) >= 0;
+    const allowed = constraint.allowed || [];
+    return allowed.indexOf(value) >= 0;
 }
 
-function isValidString(constraint: Constraint, value: any): boolean {
+function isValidString(constraint: Constraint, value: unknown): boolean {
     if (!constraint.regex) {
         throw new Error("String constraints must have regex set: " + constraint);
     }
 
-    if (!_.isString(value)) {
+    if (!isString(value)) {
         return false;
     }
 
@@ -133,7 +98,7 @@ function isValidString(constraint: Constraint, value: any): boolean {
     return (trimmed === '' && constraint.optional) || constraint.regex.test(trimmed);
 }
 
-function isValid(constraint: Constraint, acceptUndefined: boolean, value: any): boolean {
+function isValid(constraint: Constraint, acceptUndefined: boolean, value: unknown): boolean {
     if (value === undefined) {
         return acceptUndefined || constraint.optional === true;
     }
@@ -174,8 +139,8 @@ function areValid(constraints: Constraints, acceptUndefined: boolean, values: Va
     return true;
 }
 
-export function forConstraint (constraint: Constraint, acceptUndefined: boolean): (value: any) => boolean {
+export function forConstraint(constraint: Constraint, acceptUndefined: boolean): (value: unknown) => boolean {
-    return ((value: any): boolean => isValid(constraint, acceptUndefined, value));
+    return ((value: unknown): boolean => isValid(constraint, acceptUndefined, value));
 }
 
 export function forConstraints(constraints: Constraints, acceptUndefined: boolean): (values: Values) => boolean {

yarn.lock

@@ -935,10 +935,10 @@
   resolved "https://registry.yarnpkg.com/@types/node/-/node-17.0.34.tgz#3b0b6a50ff797280b8d000c6281d229f9c538cef"
   integrity sha512-XImEz7XwTvDBtzlTnm8YvMqGW/ErMWBsKZ+hMTvnDIjGCKxwK5Xpc+c/oQjOauwq8M4OS11hEkpjX8rrI/eEgA==
 
-"@types/node@^18.0.6":
+"@types/node@^18.6.2":
-  version "18.0.6"
+  version "18.6.2"
-  resolved "https://registry.yarnpkg.com/@types/node/-/node-18.0.6.tgz#0ba49ac517ad69abe7a1508bc9b3a5483df9d5d7"
+  resolved "https://registry.yarnpkg.com/@types/node/-/node-18.6.2.tgz#ffc5f0f099d27887c8d9067b54e55090fcd54126"
-  integrity sha512-/xUq6H2aQm261exT6iZTMifUySEt4GR5KX8eYyY+C4MSNPqSh9oNIP7tz2GLKTlFaiBbgZNxffoR3CVRG+cljw==
+  integrity sha512-KcfkBq9H4PI6Vpu5B/KoPeuVDAbmi+2mDBqGPGUgoL7yXQtcWGu2vJWmmRkneWK3Rh0nIAX192Aa87AqKHYChQ==
 
 "@types/nodemailer@^6.4.4":
   version "6.4.4"
@@ -1962,10 +1962,10 @@ commander@^7.2.0:
   resolved "https://registry.yarnpkg.com/commander/-/commander-7.2.0.tgz#a36cb57d0b501ce108e4d20559a150a391d97ab7"
   integrity sha512-QrWXB+ZQSVPmIWIhtEO9H+gwHaMGYiF5ChvoJ+K9ZGHG/sVsa6yiesAD1GC/x46sET00Xlwo1u49RVVVzvcSkw==
 
-commander@^9.3.0:
+commander@^9.4.0:
-  version "9.3.0"
+  version "9.4.0"
-  resolved "https://registry.yarnpkg.com/commander/-/commander-9.3.0.tgz#f619114a5a2d2054e0d9ff1b31d5ccf89255e26b"
+  resolved "https://registry.yarnpkg.com/commander/-/commander-9.4.0.tgz#bc4a40918fefe52e22450c111ecd6b7acce6f11c"
-  integrity sha512-hv95iU5uXPbK83mjrJKuZyFM/LBAoCV/XhVGkS5Je6tl7sxr6A0ITMw5WoRV46/UaJ46Nllm3Xt7IaJhXTIkzw==
+  integrity sha512-sRPT+umqkz90UA8M1yqYfnHlZA7fF6nSphDtxeywPZ49ysjxDQybzk13CL+mXekDRG92skbcqCLVovuCusNmFw==
 
 commondir@^1.0.1:
   version "1.0.1"
@@ -7287,10 +7287,10 @@ yargs@^17.3.1:
     y18n "^5.0.5"
     yargs-parser "^21.0.0"
 
-yarn-audit-fix@^9.3.2:
+yarn-audit-fix@^9.3.3:
-  version "9.3.2"
+  version "9.3.3"
-  resolved "https://registry.yarnpkg.com/yarn-audit-fix/-/yarn-audit-fix-9.3.2.tgz#9268aeaf70faafd6d8b8a71d0b8c8d97d6b809ec"
+  resolved "https://registry.yarnpkg.com/yarn-audit-fix/-/yarn-audit-fix-9.3.3.tgz#05e1fab4fb6dd137db6c31006d569dc7144d41c3"
-  integrity sha512-hRPu2FRTLF5kL+fgq6NZDVgvGV7zEO6ghgfXoFmseDtDzqBIfKbGVNL+XqJ1fIil70x6XyrQwyARyyrMZtxpaw==
+  integrity sha512-EFKcjEi3GSQ3QL7dV835ovfcw8of6RbiRdyeA2n67r7dcJYctxOqqmFHQPBoEvQSDXuYH/Zwk/8J6QUT4R8E5A==
   dependencies:
     "@types/find-cache-dir" "^3.2.1"
     "@types/fs-extra" "^9.0.13"
@@ -7299,7 +7299,7 @@ yarn-audit-fix@^9.3.2:
     "@types/yarnpkg__lockfile" "^1.1.5"
     "@yarnpkg/lockfile" "^1.1.0"
     chalk "^5.0.1"
-    commander "^9.3.0"
+    commander "^9.4.0"
     find-cache-dir "^3.3.2"
     find-up "^6.3.0"
     fs-extra "^10.1.0"