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* Runtime Detector - Detects and analyzes JavaScript runtime environments
* Provides detailed capability analysis for universal applications
*/
// Runtime environment constants
export const RuntimeEnvironment = {
BROWSER: 'browser',
NODE: 'node',
DENO: 'deno',
BUN: 'bun',
EDGE: 'edge',
CLOUDFLARE: 'cloudflare',
ELECTRON: 'electron',
TAURI: 'tauri',
WEBVIEW: 'webview',
STATIC: 'static',
UNKNOWN: 'unknown'
};
export class RuntimeDetector {
constructor() {
this.detectionResult = null;
this.capabilities = null;
}
// Reset detection cache (useful for testing)
reset() {
this.detectionResult = null;
this.capabilities = null;
}
// Main detection method
detect() {
if (this.detectionResult) {
return this.detectionResult;
}
this.detectionResult = this.performDetection();
return this.detectionResult;
}
performDetection() {
// Desktop app frameworks (check first as they may have browser-like globals)
if (this.isTauri()) return RuntimeEnvironment.TAURI;
if (this.isElectron()) return RuntimeEnvironment.ELECTRON;
if (this.isWebView()) return RuntimeEnvironment.WEBVIEW;
// JavaScript runtimes
if (this.isDeno()) return RuntimeEnvironment.DENO;
if (this.isBun()) return RuntimeEnvironment.BUN;
// Edge environments
if (this.isCloudflareWorkers()) return RuntimeEnvironment.CLOUDFLARE;
if (this.isEdgeRuntime()) return RuntimeEnvironment.EDGE;
// Browser and Node.js
if (this.isBrowser()) return RuntimeEnvironment.BROWSER;
if (this.isNodeJS()) return RuntimeEnvironment.NODE;
return RuntimeEnvironment.UNKNOWN;
}
// Environment-specific detection methods
isBrowser() {
return typeof window !== 'undefined' &&
typeof document !== 'undefined' &&
typeof navigator !== 'undefined';
}
isNodeJS() {
return typeof process !== 'undefined' &&
process.versions &&
process.versions.node &&
typeof require !== 'undefined';
}
isDeno() {
return typeof Deno !== 'undefined' &&
typeof Deno.version !== 'undefined';
}
isBun() {
return typeof Bun !== 'undefined' ||
(typeof process !== 'undefined' &&
process.versions &&
process.versions.bun);
}
isElectron() {
return typeof window !== 'undefined' &&
typeof window.require !== 'undefined' &&
typeof window.require('electron') !== 'undefined';
}
isTauri() {
return typeof window !== 'undefined' &&
typeof window.__TAURI__ !== 'undefined';
}
isWebView() {
return typeof window !== 'undefined' &&
(typeof window.webkit !== 'undefined' ||
typeof window.external !== 'undefined') &&
!this.isElectron() &&
!this.isTauri();
}
isCloudflareWorkers() {
return typeof caches !== 'undefined' &&
typeof fetch !== 'undefined' &&
typeof Response !== 'undefined' &&
typeof addEventListener !== 'undefined' &&
typeof window === 'undefined';
}
isEdgeRuntime() {
return typeof EdgeRuntime !== 'undefined' ||
(typeof globalThis !== 'undefined' &&
typeof globalThis.EdgeRuntime !== 'undefined') ||
this.isVercelEdge() ||
this.isNetlifyEdge();
}
isVercelEdge() {
return typeof process !== 'undefined' &&
process.env &&
process.env.VERCEL === '1' &&
typeof EdgeRuntime !== 'undefined';
}
isNetlifyEdge() {
return typeof Netlify !== 'undefined' ||
(typeof process !== 'undefined' &&
process.env &&
process.env.NETLIFY === 'true');
}
// Detailed capability analysis
getCapabilities(environment = null) {
const env = environment || this.detect();
if (this.capabilities && !environment) {
return this.capabilities;
}
const capabilities = this.analyzeCapabilities(env);
if (!environment) {
this.capabilities = capabilities;
}
return capabilities;
}
analyzeCapabilities(environment) {
const base = {
environment,
dom: false,
ssr: false,
filesystem: false,
fetch: false,
websockets: false,
workers: false,
storage: false,
crypto: false,
streams: false,
modules: {
esm: false,
commonjs: false,
dynamicImport: false
},
apis: {
console: false,
timers: false,
events: false,
url: false,
base64: false
}
};
switch (environment) {
case RuntimeEnvironment.BROWSER:
return {
...base,
dom: true,
fetch: typeof fetch !== 'undefined',
websockets: typeof WebSocket !== 'undefined',
workers: typeof Worker !== 'undefined',
storage: typeof localStorage !== 'undefined',
crypto: typeof crypto !== 'undefined',
streams: typeof ReadableStream !== 'undefined',
modules: {
esm: true,
commonjs: false,
dynamicImport: (() => { try { return typeof Function('return import("")') === 'function'; } catch { return false; } })()
},
apis: {
console: typeof console !== 'undefined',
timers: typeof setTimeout !== 'undefined',
events: typeof EventTarget !== 'undefined',
url: typeof URL !== 'undefined',
base64: typeof btoa !== 'undefined'
}
};
case RuntimeEnvironment.NODE:
return {
...base,
ssr: true,
filesystem: true,
fetch: typeof fetch !== 'undefined',
websockets: true,
crypto: true,
streams: true,
modules: {
esm: true,
commonjs: true,
dynamicImport: (() => { try { return typeof Function('return import("")') === 'function'; } catch { return false; } })()
},
apis: {
console: true,
timers: true,
events: true,
url: typeof URL !== 'undefined',
base64: typeof Buffer !== 'undefined'
}
};
case RuntimeEnvironment.DENO:
return {
...base,
ssr: true,
filesystem: typeof Deno.readTextFile !== 'undefined',
fetch: typeof fetch !== 'undefined',
websockets: typeof WebSocket !== 'undefined',
crypto: typeof crypto !== 'undefined',
streams: typeof ReadableStream !== 'undefined',
modules: {
esm: true,
commonjs: false,
dynamicImport: true
},
apis: {
console: true,
timers: true,
events: true,
url: typeof URL !== 'undefined',
base64: typeof btoa !== 'undefined'
}
};
case RuntimeEnvironment.BUN:
return {
...base,
ssr: true,
filesystem: true,
fetch: typeof fetch !== 'undefined',
websockets: typeof WebSocket !== 'undefined',
crypto: typeof crypto !== 'undefined',
streams: typeof ReadableStream !== 'undefined',
modules: {
esm: true,
commonjs: true,
dynamicImport: true
},
apis: {
console: true,
timers: true,
events: true,
url: typeof URL !== 'undefined',
base64: typeof btoa !== 'undefined'
}
};
case RuntimeEnvironment.CLOUDFLARE:
return {
...base,
ssr: true,
fetch: typeof fetch !== 'undefined',
websockets: typeof WebSocket !== 'undefined',
storage: typeof caches !== 'undefined',
crypto: typeof crypto !== 'undefined',
streams: typeof ReadableStream !== 'undefined',
modules: {
esm: true,
commonjs: false,
dynamicImport: true
},
apis: {
console: true,
timers: true,
events: true,
url: typeof URL !== 'undefined',
base64: typeof btoa !== 'undefined'
}
};
case RuntimeEnvironment.ELECTRON:
return {
...base,
dom: true,
ssr: true,
filesystem: true,
fetch: typeof fetch !== 'undefined',
websockets: typeof WebSocket !== 'undefined',
workers: typeof Worker !== 'undefined',
storage: typeof localStorage !== 'undefined',
crypto: typeof crypto !== 'undefined',
streams: typeof ReadableStream !== 'undefined',
modules: {
esm: true,
commonjs: true,
dynamicImport: true
},
apis: {
console: true,
timers: true,
events: true,
url: typeof URL !== 'undefined',
base64: typeof btoa !== 'undefined'
}
};
case RuntimeEnvironment.TAURI:
return {
...base,
dom: true,
ssr: true,
filesystem: typeof window !== 'undefined' &&
typeof window.__TAURI__ !== 'undefined',
fetch: typeof fetch !== 'undefined',
websockets: typeof WebSocket !== 'undefined',
storage: typeof localStorage !== 'undefined',
crypto: typeof crypto !== 'undefined',
streams: typeof ReadableStream !== 'undefined',
modules: {
esm: true,
commonjs: false,
dynamicImport: true
},
apis: {
console: true,
timers: true,
events: true,
url: typeof URL !== 'undefined',
base64: typeof btoa !== 'undefined'
}
};
default:
return base;
}
}
// Get detailed runtime information
getRuntimeInfo() {
const environment = this.detect();
const capabilities = this.getCapabilities(environment);
return {
environment,
capabilities,
version: this.getRuntimeVersion(environment),
features: this.getAvailableFeatures(),
userAgent: this.getUserAgent(),
platform: this.getPlatformInfo()
};
}
// Alias method for backward compatibility
getEnvironmentInfo() {
return this.getRuntimeInfo();
}
getRuntimeVersion(environment) {
switch (environment) {
case RuntimeEnvironment.NODE:
return typeof process !== 'undefined' ? process.version : null;
case RuntimeEnvironment.DENO:
return typeof Deno !== 'undefined' ? Deno.version.deno : null;
case RuntimeEnvironment.BUN:
return typeof Bun !== 'undefined' ? Bun.version :
(typeof process !== 'undefined' ? process.versions.bun : null);
case RuntimeEnvironment.BROWSER:
return typeof navigator !== 'undefined' ? navigator.userAgent : null;
default:
return null;
}
}
getAvailableFeatures() {
const features = [];
if (typeof fetch !== 'undefined') features.push('fetch');
if (typeof WebSocket !== 'undefined') features.push('websockets');
if (typeof Worker !== 'undefined') features.push('workers');
if (typeof crypto !== 'undefined') features.push('crypto');
if (typeof localStorage !== 'undefined') features.push('localStorage');
if (typeof sessionStorage !== 'undefined') features.push('sessionStorage');
if (typeof IndexedDB !== 'undefined') features.push('indexedDB');
if (typeof WebAssembly !== 'undefined') features.push('webassembly');
if (typeof SharedArrayBuffer !== 'undefined') features.push('sharedArrayBuffer');
if (typeof BigInt !== 'undefined') features.push('bigint');
if ((() => { try { return typeof Function('return import("")') === 'function'; } catch { return false; } })()) features.push('dynamicImport');
return features;
}
getUserAgent() {
if (typeof navigator !== 'undefined' && navigator.userAgent) {
return navigator.userAgent;
}
return null;
}
getPlatformInfo() {
// Browser platform info
if (typeof navigator !== 'undefined') {
return {
platform: navigator.platform,
language: navigator.language,
cookieEnabled: navigator.cookieEnabled,
onLine: navigator.onLine
};
}
// Node.js platform info
if (typeof process !== 'undefined') {
return {
platform: process.platform,
arch: process.arch,
version: process.version,
pid: process.pid
};
}
// Deno platform info
if (typeof Deno !== 'undefined') {
return {
os: Deno.build.os,
arch: Deno.build.arch,
version: Deno.version
};
}
return null;
}
// Compatibility checking
isCompatible(requirements) {
const capabilities = this.getCapabilities();
for (const [feature, required] of Object.entries(requirements)) {
if (required && !capabilities[feature]) {
return false;
}
}
return true;
}
getIncompatibilities(requirements) {
const capabilities = this.getCapabilities();
const incompatibilities = [];
for (const [feature, required] of Object.entries(requirements)) {
if (required && !capabilities[feature]) {
incompatibilities.push(feature);
}
}
return incompatibilities;
}
// Static methods for quick access
static detect() {
return new RuntimeDetector().detect();
}
static getCapabilities(environment = null) {
return new RuntimeDetector().getCapabilities(environment);
}
static getRuntimeInfo() {
return new RuntimeDetector().getRuntimeInfo();
}
static isCompatible(requirements) {
return new RuntimeDetector().isCompatible(requirements);
}
}
// Convenience functions
export function detectRuntime() {
return RuntimeDetector.detect();
}
export function getRuntimeCapabilities(environment = null) {
return RuntimeDetector.getCapabilities(environment);
}
export function getRuntimeInfo() {
return RuntimeDetector.getRuntimeInfo();
}
export function isRuntimeCompatible(requirements) {
return RuntimeDetector.isCompatible(requirements);
}
// Default detector instance
export const runtimeDetector = new RuntimeDetector(); |