clarity-js/src/diagnostic/internal.ts

An analytics library that uses web page interactions to generate aggregated insights

import { type Code, Event, type Severity } from "@clarity-types/data";
import type { LogData } from "@clarity-types/diagnostic";
import encode from "./encode";

let history: { [key: number]: string[] } = {};
export let data: LogData;

export function start(): void {
    history = {};
}

export function log(code: Code, severity: Severity, name: string = null, message: string = null, stack: string = null): void {
    const key = name ? `${name}|${message}` : "";
    // While rare, it's possible for code to fail repeatedly during the lifetime of the same page
    // In those cases, we only want to log the failure once and not spam logs with redundant information.
    if (code in history && history[code].indexOf(key) >= 0) {
        return;
    }

    data = { code, name, message, stack, severity };

    // Maintain history of errors in memory to avoid sending redundant information
    if (code in history) {
        history[code].push(key);
    } else {
        history[code] = [key];
    }

    encode(Event.Log);
}

export function stop(): void {
    history = {};
}