Upload signaling server

This commit is contained in:
2025-07-25 16:32:37 +03:00
parent a182befeb6
commit 27fbbe8642
9 changed files with 1049 additions and 0 deletions
+139
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# Logs
logs
*.log
npm-debug.log*
yarn-debug.log*
yarn-error.log*
lerna-debug.log*
# Diagnostic reports (https://nodejs.org/api/report.html)
report.[0-9]*.[0-9]*.[0-9]*.[0-9]*.json
# Runtime data
pids
*.pid
*.seed
*.pid.lock
# Directory for instrumented libs generated by jscoverage/JSCover
lib-cov
# Coverage directory used by tools like istanbul
coverage
*.lcov
# nyc test coverage
.nyc_output
# Grunt intermediate storage (https://gruntjs.com/creating-plugins#storing-task-files)
.grunt
# Bower dependency directory (https://bower.io/)
bower_components
# node-waf configuration
.lock-wscript
# Compiled binary addons (https://nodejs.org/api/addons.html)
build/Release
# Dependency directories
node_modules/
jspm_packages/
# Snowpack dependency directory (https://snowpack.dev/)
web_modules/
# TypeScript cache
*.tsbuildinfo
# Optional npm cache directory
.npm
# Optional eslint cache
.eslintcache
# Optional stylelint cache
.stylelintcache
# Optional REPL history
.node_repl_history
# Output of 'npm pack'
*.tgz
# Yarn Integrity file
.yarn-integrity
# dotenv environment variable files
.env
.env.*
!.env.example
# parcel-bundler cache (https://parceljs.org/)
.cache
.parcel-cache
# Next.js build output
.next
out
# Nuxt.js build / generate output
.nuxt
dist
# Gatsby files
.cache/
# Comment in the public line in if your project uses Gatsby and not Next.js
# https://nextjs.org/blog/next-9-1#public-directory-support
# public
# vuepress build output
.vuepress/dist
# vuepress v2.x temp and cache directory
.temp
.cache
# Sveltekit cache directory
.svelte-kit/
# vitepress build output
**/.vitepress/dist
# vitepress cache directory
**/.vitepress/cache
# Docusaurus cache and generated files
.docusaurus
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.serverless/
# FuseBox cache
.fusebox/
# DynamoDB Local files
.dynamodb/
# Firebase cache directory
.firebase/
# TernJS port file
.tern-port
# Stores VSCode versions used for testing VSCode extensions
.vscode-test
# yarn v3
.pnp.*
.yarn/*
!.yarn/patches
!.yarn/plugins
!.yarn/releases
!.yarn/sdks
!.yarn/versions
# Vite logs files
vite.config.js.timestamp-*
vite.config.ts.timestamp-*
+96
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/*
* HTTP tunnel over WebRTC - P2P class
* Author: Konstantinos Drakontidis
* Email: gedra100sh@gmail.com
*/
import { v4 } from "uuid";
import { WebSocket } from "ws";
import config from "../config/config"
export class P2P {
private server_instance: WebSocket | null;
private clients: Map<string, { instance: WebSocket, timeout: NodeJS.Timeout | null }>;
public constructor() {
this.server_instance = null;
this.clients = new Map();
}
setServer(server_instance: WebSocket): void {
this.server_instance = server_instance;
}
getServer(): WebSocket | null {
return this.server_instance;
}
addClient(client: WebSocket): string {
const id = v4();
this.clients.set(id, { instance: client, timeout: null });
return id;
}
getClient(id: string, client: WebSocket): WebSocket | null {
const client_instance = this.clients.get(id)?.instance;
if (client_instance == client) {
return client_instance;
}
return null;
}
getPeer(id: string, client: WebSocket): WebSocket | null {
if (client == this.server_instance) {
const client_instance = this.clients.get(id)?.instance;
return (client_instance != undefined) ? client_instance : null;
} else {
return this.server_instance;
}
}
removeClient(id: string) {
return this.clients.delete(id);
}
getId(client: WebSocket): string | null {
var key = null;
this.clients.forEach((v, k) => {
if (v.instance == client) {
key = k;
return;
}
});
return key;
}
clear() {
this.clients.forEach((v) => {
v.instance.close(3001, "Server shutdown.");
})
this.server_instance = null;
this.clients.clear();
}
setClientTimeout(id: string, p2p: P2P, ws_client: WebSocket, callback: (id: string, p2p: P2P, ws_client: WebSocket) => void) {
const instance = this.clients.get(id);
if (instance) {
this.clients.set(id, { ...instance, timeout: setTimeout(() => { callback(id, p2p, ws_client) }, config.timeout) });
}
}
clearClientTimeout(id: string) {
const timeout = this.clients.get(id)?.timeout;
if (timeout && (timeout != null)) {
clearTimeout(timeout);
}
}
getMapSize(): number {
return this.clients.size;
}
};
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export interface Config {
authentication: {
server: {
username: string;
password: string;
};
client: {
username: string;
password: string;
};
};
logger: {
level: string;
error_path: string;
full_path: string;
timestamp_format: string;
};
timeout: number;
}
const config: Config = {
authentication: {
server: {
username: "superuser",
password: "password",
},
client: {
username: "user",
password: "password",
},
},
logger: {
level: "info",
error_path: "./logs/error.log",
full_path: "./logs/combined.log",
timestamp_format: "HH:mm:ss DD-MM-YYYY",
},
timeout: 5000
};
export default config;
+21
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import winston from "winston";
import path from "path";
import config from "../config/config";
const logger = winston.createLogger({
levels: winston.config.syslog.levels,
level: process.env.LOG_LEVEL || config.logger.level,
format: winston.format.combine(
winston.format.timestamp({
format: config.logger.timestamp_format,
}),
winston.format.printf((info) => `[${info.timestamp}][${info.level}]: ${info.message}`)
),
transports: [
new winston.transports.File({ filename: path.join(path.dirname(process.cwd()), config.logger.error_path), level: "error", }),
new winston.transports.File({ filename: path.join(path.dirname(process.cwd()), config.logger.full_path) }),
new winston.transports.Console()
],
});
export default logger;
+391
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{
"name": "signaling_server",
"version": "1.0.0",
"lockfileVersion": 3,
"requires": true,
"packages": {
"": {
"name": "signaling_server",
"version": "1.0.0",
"license": "ISC",
"dependencies": {
"uuid": "^11.1.0",
"winston": "^3.17.0",
"ws": "^8.18.3",
"zod": "^4.0.2"
},
"devDependencies": {
"@types/ws": "^8.18.1",
"typescript": "^5.8.3"
}
},
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}
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"safe-stable-stringify": "^2.3.1",
"stack-trace": "0.0.x",
"triple-beam": "^1.3.0",
"winston-transport": "^4.9.0"
},
"engines": {
"node": ">= 12.0.0"
}
},
"node_modules/winston-transport": {
"version": "4.9.0",
"resolved": "https://registry.npmjs.org/winston-transport/-/winston-transport-4.9.0.tgz",
"integrity": "sha512-8drMJ4rkgaPo1Me4zD/3WLfI/zPdA9o2IipKODunnGDcuqbHwjsbB79ylv04LCGGzU0xQ6vTznOMpQGaLhhm6A==",
"license": "MIT",
"dependencies": {
"logform": "^2.7.0",
"readable-stream": "^3.6.2",
"triple-beam": "^1.3.0"
},
"engines": {
"node": ">= 12.0.0"
}
},
"node_modules/ws": {
"version": "8.18.3",
"resolved": "https://registry.npmjs.org/ws/-/ws-8.18.3.tgz",
"integrity": "sha512-PEIGCY5tSlUt50cqyMXfCzX+oOPqN0vuGqWzbcJ2xvnkzkq46oOpz7dQaTDBdfICb4N14+GARUDw2XV2N4tvzg==",
"license": "MIT",
"engines": {
"node": ">=10.0.0"
},
"peerDependencies": {
"bufferutil": "^4.0.1",
"utf-8-validate": ">=5.0.2"
},
"peerDependenciesMeta": {
"bufferutil": {
"optional": true
},
"utf-8-validate": {
"optional": true
}
}
},
"node_modules/zod": {
"version": "4.0.2",
"resolved": "https://registry.npmjs.org/zod/-/zod-4.0.2.tgz",
"integrity": "sha512-X2niJNY54MGam4L6Kj0AxeedeDIi/E5QFW0On2faSX5J4/pfLk1tW+cRMIMoojnCavn/u5W/kX17e1CSGnKMxA==",
"license": "MIT",
"funding": {
"url": "https://github.com/sponsors/colinhacks"
}
}
}
}
+21
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{
"name": "signaling_server",
"version": "1.0.0",
"description": "\"Signaling Server for WebRTC\"",
"main": "dist/server.js",
"scripts": {
"test": "echo \"Error: no test specified\" && exit 1"
},
"author": "Kostas Drakontidis",
"license": "ISC",
"dependencies": {
"uuid": "^11.1.0",
"winston": "^3.17.0",
"ws": "^8.18.3",
"zod": "^4.0.2"
},
"devDependencies": {
"@types/ws": "^8.18.1",
"typescript": "^5.8.3"
}
}
+50
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import { z } from "zod/v4";
export const register = z.object({
type: z.literal("register"),
username: z.string(),
password: z.string()
});
export type Register = z.infer<typeof register>;
export const offer = z.object({
type: z.literal("offer"),
id: z.uuid({ version: "v4" }),
offer: z.object({
type: z.literal("offer"),
sdp: z.string()
})
});
export type Offer = z.infer<typeof offer>;
export const answer = z.object({
type: z.literal("answer"),
id: z.uuid({ version: "v4" }),
answer: z.object({
type: z.literal("answer"),
sdp: z.string()
})
});
export type Answer = z.infer<typeof answer>;
export const candidate = z.object({
type: z.literal("candidate"),
id: z.uuid({ version: "v4" }),
candidate: z.looseObject({
candidate: z.string()
})
});
export type Candidate = z.infer<typeof candidate>;
export const schemas = z.union([
register,
offer,
answer,
candidate
]);
export type Message = z.infer<typeof schemas>;
+177
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/*
* HTTP tunnel over WebRTC - Signaling Server
* Author: Konstantinos Drakontidis
* Email: gedra100sh@gmail.com
*/
import WebSocket from "ws";
import { P2P } from "./P2P/P2P";
import logger from "./logger/logger";
import { schemas, Message, Register, Offer, Answer, Candidate } from "./schemas/schemas";
import config from "./config/config";
import { validate } from "uuid";
enum WS_CODE {
INVALID_CREDENTIALS = 3000,
BACKEND_OFFLINE = 3001,
UNKNOWN_TYPE = 3002,
PARSE_ERROR = 3003,
TIMEOUT = 3004,
WS_ERROR = 3005
};
type ParseSuccess = {
success: true;
data: Message;
};
type ParseFailure = {
success: false;
error: "Invalid JSON." | "Invalid Schema.";
};
function safeParse(raw: string): ParseSuccess | ParseFailure {
let parsed;
try {
parsed = JSON.parse(raw);
} catch (error) {
return { success: false, error: "Invalid JSON." };
}
parsed = schemas.safeParse(parsed);
if (parsed.success) {
return parsed;
} else {
return { success: false, error: "Invalid Schema." };
}
}
function timeoutHandler(id: string, p2p: P2P, ws_client: WebSocket) {
ws_client.close(WS_CODE.TIMEOUT, "Timeout.");
logger.info("Kicked client due to inactivity.");
p2p.removeClient(id);
}
function register(p2p: P2P, ws_client: WebSocket, data: Register) {
const { username, password } = data;
if ((username == config.authentication.client.username) && (password == config.authentication.client.password)) {
if (p2p.getServer() != null) {
const id = p2p.addClient(ws_client);
p2p.setClientTimeout(id, p2p, ws_client, timeoutHandler);
logger.info(`Client registered, timeout set and assigned ID: [${id}].`);
logger.info(`Registered clients: ${p2p.getMapSize()}.`);
ws_client.send(JSON.stringify({ type: "id", id: id }));
} else {
logger.error("Client connected but server offline.");
ws_client.close(WS_CODE.BACKEND_OFFLINE, "Backend offline.");
}
} else if ((username == config.authentication.server.username) && (password == config.authentication.server.password)) {
logger.info("Server set.");
p2p.setServer(ws_client);
} else {
logger.error("Client entered invalid credentials.");
ws_client.close(WS_CODE.INVALID_CREDENTIALS, "Invalid credentials.");
}
}
function offer(p2p: P2P, ws_client: WebSocket, data: Offer): void {
const { id, offer } = data;
const peer = p2p.getPeer(id, ws_client);
if (peer != null) {
p2p.clearClientTimeout(id);
logger.info(`Forwarded offer, reset timeout ID: [${id}].`);
peer.send(JSON.stringify({ type: "offer", id: id, offer: offer }));
} else {
logger.error(`Couldn't get peer, failed to forward offer ID: [${id}].`);
}
}
function answer(p2p: P2P, ws_client: WebSocket, data: Answer): void {
const { id, answer } = data;
const peer = p2p.getPeer(id, ws_client);
if (peer != null) {
logger.info(`Forwarded answer ID: [${id}].`);
peer.send(JSON.stringify({ type: "answer", id: id, answer: answer }));
} else {
logger.error(`Couldn't get peer, failed to forward answer ID: [${id}].`);
}
}
function candidate(p2p: P2P, ws_client: WebSocket, data: Candidate): void {
const { id, candidate } = data;
const peer = p2p.getPeer(id, ws_client);
if (peer != null) {
logger.info(`Forwarded candidate ID: [${id}].`);
peer.send(JSON.stringify({ type: "candidate", id: id, candidate: candidate }));
} else {
logger.error(`Couldn't get peer, failed to forward candidate ID: [${id}].`);
}
}
(() => {
const wss = new WebSocket.WebSocketServer({ port: 3000 });
const p2p = new P2P();
logger.info("Created P2P instance.");
wss.on("connection", async (ws_client) => {
ws_client.on("message", async (ws_msg) => {
const parsed = safeParse(ws_msg.toString());
if (parsed.success) {
switch (parsed.data.type) {
case "register": register(p2p, ws_client, parsed.data); break;
case "offer": offer(p2p, ws_client, parsed.data); break;
case "answer": answer(p2p, ws_client, parsed.data); break;
case "candidate": candidate(p2p, ws_client, parsed.data); break;
default:
logger.error(`Unknown message type. ${(parsed.data as any).type}`);
ws_client.close(WS_CODE.UNKNOWN_TYPE, "Unknown message type.");
break;
}
} else {
logger.error(parsed.error);
ws_client.close(WS_CODE.PARSE_ERROR, parsed.error);
}
});
ws_client.on("close", (code, reason) => {
if ((code != WS_CODE.INVALID_CREDENTIALS) &&
(code != WS_CODE.BACKEND_OFFLINE) &&
(code != WS_CODE.TIMEOUT)) {
if (ws_client == p2p.getServer()) {
logger.info("Server disconnected. Closing connections.");
p2p.clear();
} else if (validate(reason.toString())) {
logger.info(`Client disconnected, removed instance ID: [${reason.toString()}].`);
p2p.removeClient(reason.toString());
p2p.getServer()?.send(JSON.stringify({ type: "terminate", id: reason.toString() }));
} else {
const id = p2p.getId(ws_client)
if (id != null) {
logger.error(`Client lost, found and removed instance ID: [${id}].`);
p2p.removeClient(id);
p2p.getServer()?.send(JSON.stringify({ type: "terminate", id: id }))
} else {
logger.error("Client lost, couldn't find any trace of existance... Probably a bug?");
}
}
}
});
ws_client.on("error", (ws_error) => {
logger.error(`Client caused an error: ${ws_error.message}.`);
ws_client.close(WS_CODE.WS_ERROR, ws_error.message);
})
});
wss.on("error", (wss_error) => {
logger.error(`WebSocket server error: ${wss_error}.`);
});
})();
+113
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{
"compilerOptions": {
/* Visit https://aka.ms/tsconfig to read more about this file */
/* Projects */
// "incremental": true, /* Save .tsbuildinfo files to allow for incremental compilation of projects. */
// "composite": true, /* Enable constraints that allow a TypeScript project to be used with project references. */
// "tsBuildInfoFile": "./.tsbuildinfo", /* Specify the path to .tsbuildinfo incremental compilation file. */
// "disableSourceOfProjectReferenceRedirect": true, /* Disable preferring source files instead of declaration files when referencing composite projects. */
// "disableSolutionSearching": true, /* Opt a project out of multi-project reference checking when editing. */
// "disableReferencedProjectLoad": true, /* Reduce the number of projects loaded automatically by TypeScript. */
/* Language and Environment */
"target": "es2016", /* Set the JavaScript language version for emitted JavaScript and include compatible library declarations. */
// "lib": [], /* Specify a set of bundled library declaration files that describe the target runtime environment. */
// "jsx": "preserve", /* Specify what JSX code is generated. */
// "libReplacement": true, /* Enable lib replacement. */
// "experimentalDecorators": true, /* Enable experimental support for legacy experimental decorators. */
// "emitDecoratorMetadata": true, /* Emit design-type metadata for decorated declarations in source files. */
// "jsxFactory": "", /* Specify the JSX factory function used when targeting React JSX emit, e.g. 'React.createElement' or 'h'. */
// "jsxFragmentFactory": "", /* Specify the JSX Fragment reference used for fragments when targeting React JSX emit e.g. 'React.Fragment' or 'Fragment'. */
// "jsxImportSource": "", /* Specify module specifier used to import the JSX factory functions when using 'jsx: react-jsx*'. */
// "reactNamespace": "", /* Specify the object invoked for 'createElement'. This only applies when targeting 'react' JSX emit. */
// "noLib": true, /* Disable including any library files, including the default lib.d.ts. */
// "useDefineForClassFields": true, /* Emit ECMAScript-standard-compliant class fields. */
// "moduleDetection": "auto", /* Control what method is used to detect module-format JS files. */
/* Modules */
"module": "commonjs", /* Specify what module code is generated. */
"rootDir": "./", /* Specify the root folder within your source files. */
// "moduleResolution": "node10", /* Specify how TypeScript looks up a file from a given module specifier. */
// "baseUrl": "./", /* Specify the base directory to resolve non-relative module names. */
// "paths": {}, /* Specify a set of entries that re-map imports to additional lookup locations. */
// "rootDirs": [], /* Allow multiple folders to be treated as one when resolving modules. */
// "typeRoots": [], /* Specify multiple folders that act like './node_modules/@types'. */
// "types": [], /* Specify type package names to be included without being referenced in a source file. */
// "allowUmdGlobalAccess": true, /* Allow accessing UMD globals from modules. */
// "moduleSuffixes": [], /* List of file name suffixes to search when resolving a module. */
// "allowImportingTsExtensions": true, /* Allow imports to include TypeScript file extensions. Requires '--moduleResolution bundler' and either '--noEmit' or '--emitDeclarationOnly' to be set. */
// "rewriteRelativeImportExtensions": true, /* Rewrite '.ts', '.tsx', '.mts', and '.cts' file extensions in relative import paths to their JavaScript equivalent in output files. */
// "resolvePackageJsonExports": true, /* Use the package.json 'exports' field when resolving package imports. */
// "resolvePackageJsonImports": true, /* Use the package.json 'imports' field when resolving imports. */
// "customConditions": [], /* Conditions to set in addition to the resolver-specific defaults when resolving imports. */
// "noUncheckedSideEffectImports": true, /* Check side effect imports. */
// "resolveJsonModule": true, /* Enable importing .json files. */
// "allowArbitraryExtensions": true, /* Enable importing files with any extension, provided a declaration file is present. */
// "noResolve": true, /* Disallow 'import's, 'require's or '<reference>'s from expanding the number of files TypeScript should add to a project. */
/* JavaScript Support */
// "allowJs": true, /* Allow JavaScript files to be a part of your program. Use the 'checkJS' option to get errors from these files. */
// "checkJs": true, /* Enable error reporting in type-checked JavaScript files. */
// "maxNodeModuleJsDepth": 1, /* Specify the maximum folder depth used for checking JavaScript files from 'node_modules'. Only applicable with 'allowJs'. */
/* Emit */
// "declaration": true, /* Generate .d.ts files from TypeScript and JavaScript files in your project. */
// "declarationMap": true, /* Create sourcemaps for d.ts files. */
// "emitDeclarationOnly": true, /* Only output d.ts files and not JavaScript files. */
// "sourceMap": true, /* Create source map files for emitted JavaScript files. */
// "inlineSourceMap": true, /* Include sourcemap files inside the emitted JavaScript. */
// "noEmit": true, /* Disable emitting files from a compilation. */
// "outFile": "./", /* Specify a file that bundles all outputs into one JavaScript file. If 'declaration' is true, also designates a file that bundles all .d.ts output. */
"outDir": "./dist", /* Specify an output folder for all emitted files. */
// "removeComments": true, /* Disable emitting comments. */
// "importHelpers": true, /* Allow importing helper functions from tslib once per project, instead of including them per-file. */
// "downlevelIteration": true, /* Emit more compliant, but verbose and less performant JavaScript for iteration. */
// "sourceRoot": "", /* Specify the root path for debuggers to find the reference source code. */
// "mapRoot": "", /* Specify the location where debugger should locate map files instead of generated locations. */
// "inlineSources": true, /* Include source code in the sourcemaps inside the emitted JavaScript. */
// "emitBOM": true, /* Emit a UTF-8 Byte Order Mark (BOM) in the beginning of output files. */
// "newLine": "crlf", /* Set the newline character for emitting files. */
// "stripInternal": true, /* Disable emitting declarations that have '@internal' in their JSDoc comments. */
// "noEmitHelpers": true, /* Disable generating custom helper functions like '__extends' in compiled output. */
// "noEmitOnError": true, /* Disable emitting files if any type checking errors are reported. */
// "preserveConstEnums": true, /* Disable erasing 'const enum' declarations in generated code. */
// "declarationDir": "./", /* Specify the output directory for generated declaration files. */
/* Interop Constraints */
// "isolatedModules": true, /* Ensure that each file can be safely transpiled without relying on other imports. */
// "verbatimModuleSyntax": true, /* Do not transform or elide any imports or exports not marked as type-only, ensuring they are written in the output file's format based on the 'module' setting. */
// "isolatedDeclarations": true, /* Require sufficient annotation on exports so other tools can trivially generate declaration files. */
// "erasableSyntaxOnly": true, /* Do not allow runtime constructs that are not part of ECMAScript. */
// "allowSyntheticDefaultImports": true, /* Allow 'import x from y' when a module doesn't have a default export. */
"esModuleInterop": true, /* Emit additional JavaScript to ease support for importing CommonJS modules. This enables 'allowSyntheticDefaultImports' for type compatibility. */
// "preserveSymlinks": true, /* Disable resolving symlinks to their realpath. This correlates to the same flag in node. */
"forceConsistentCasingInFileNames": true, /* Ensure that casing is correct in imports. */
/* Type Checking */
"strict": true, /* Enable all strict type-checking options. */
// "noImplicitAny": true, /* Enable error reporting for expressions and declarations with an implied 'any' type. */
// "strictNullChecks": true, /* When type checking, take into account 'null' and 'undefined'. */
// "strictFunctionTypes": true, /* When assigning functions, check to ensure parameters and the return values are subtype-compatible. */
// "strictBindCallApply": true, /* Check that the arguments for 'bind', 'call', and 'apply' methods match the original function. */
// "strictPropertyInitialization": true, /* Check for class properties that are declared but not set in the constructor. */
// "strictBuiltinIteratorReturn": true, /* Built-in iterators are instantiated with a 'TReturn' type of 'undefined' instead of 'any'. */
// "noImplicitThis": true, /* Enable error reporting when 'this' is given the type 'any'. */
// "useUnknownInCatchVariables": true, /* Default catch clause variables as 'unknown' instead of 'any'. */
// "alwaysStrict": true, /* Ensure 'use strict' is always emitted. */
// "noUnusedLocals": true, /* Enable error reporting when local variables aren't read. */
// "noUnusedParameters": true, /* Raise an error when a function parameter isn't read. */
// "exactOptionalPropertyTypes": true, /* Interpret optional property types as written, rather than adding 'undefined'. */
// "noImplicitReturns": true, /* Enable error reporting for codepaths that do not explicitly return in a function. */
// "noFallthroughCasesInSwitch": true, /* Enable error reporting for fallthrough cases in switch statements. */
// "noUncheckedIndexedAccess": true, /* Add 'undefined' to a type when accessed using an index. */
// "noImplicitOverride": true, /* Ensure overriding members in derived classes are marked with an override modifier. */
// "noPropertyAccessFromIndexSignature": true, /* Enforces using indexed accessors for keys declared using an indexed type. */
// "allowUnusedLabels": true, /* Disable error reporting for unused labels. */
// "allowUnreachableCode": true, /* Disable error reporting for unreachable code. */
/* Completeness */
// "skipDefaultLibCheck": true, /* Skip type checking .d.ts files that are included with TypeScript. */
"skipLibCheck": true /* Skip type checking all .d.ts files. */
}
}