@rakcode/shimon
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A lightweight browser fingerprinting library for JavaScript and TypeScript, supporting major frontend frameworks like React, Angular, Vue, and Svelte.
73 lines (72 loc) • 2.9 kB
JavaScript
// src/index.ts
var takeImpression = async () => {
var _a, _b, _c, _d;
if (typeof window === "undefined") return { error: "Server-side rendering" };
const fingerprintData = {
userAgent: navigator.userAgent,
platform: ((_a = navigator.userAgentData) == null ? void 0 : _a.platform) || navigator.platform || "unknown",
cpuCores: navigator.hardwareConcurrency.toString(),
touchSupport: navigator.maxTouchPoints.toString(),
language: navigator.language,
preferredLanguages: navigator.languages.join("+"),
cookiesEnabled: navigator.cookieEnabled.toString(),
doNotTrack: navigator.doNotTrack || "unknown",
networkType: ((_b = navigator.connection) == null ? void 0 : _b.effectiveType) || "unknown",
networkSpeed: ((_d = (_c = navigator.connection) == null ? void 0 : _c.downlink) == null ? void 0 : _d.toString()) || "unknown",
deviceMemory: navigator.deviceMemory ? String(navigator.deviceMemory) : "unknown",
colorDepth: screen.colorDepth.toString(),
pixelDepth: screen.pixelDepth.toString(),
screenResolution: `${screen.width}x${screen.height}`,
screenOrientation: screen.orientation.type,
indexedDB: checkIndexedDBAvailability(),
timezone: Intl.DateTimeFormat().resolvedOptions().timeZone,
webGL: getWebGLInfo(),
canvas: getCanvasFingerprint(),
audio: getAudioFingerprint()
};
fingerprintData.fingerprint = await sha256(Object.values(fingerprintData).join("||"));
return fingerprintData;
};
var sha256 = async (data) => {
const encoder = new TextEncoder();
const dataBuffer = encoder.encode(data);
const hashBuffer = await crypto.subtle.digest("SHA-256", dataBuffer);
return Array.from(new Uint8Array(hashBuffer)).map((b) => b.toString(16).padStart(2, "0")).join("");
};
var checkIndexedDBAvailability = () => !!window.indexedDB ? "Supported" : "Not Supported";
var getWebGLInfo = () => {
try {
const canvas = document.createElement("canvas");
const gl = canvas.getContext("webgl") || canvas.getContext("experimental-webgl");
if (!gl) return "Not supported";
const debugInfo = gl.getExtension("WEBGL_debug_renderer_info");
return debugInfo ? gl.getParameter(debugInfo.UNMASKED_RENDERER_WEBGL) : "Supported";
} catch {
return "Error";
}
};
var getCanvasFingerprint = () => {
try {
const canvas = document.createElement("canvas");
const ctx = canvas.getContext("2d");
if (!ctx) return "Not supported";
ctx.textBaseline = "top";
ctx.font = "14px Arial";
ctx.fillText("Fingerprint", 2, 2);
return canvas.toDataURL();
} catch {
return "Error";
}
};
var getAudioFingerprint = () => {
try {
const audioCtx = new (window.AudioContext || window.webkitAudioContext)();
const analyser = audioCtx.createAnalyser();
return analyser.frequencyBinCount.toString();
} catch {
return "Error";
}
};
export {
takeImpression
};