@dudousxd/nestjs-telescope/dist/entry/exception-family-hash.js

Laravel Telescope-style observability console for NestJS — core: watchers, recorder, correlation, SQLite store, headless API.

// packages/core/src/entry/exception-family-hash.ts
/**
 * Extract the first stack FRAME line (the deepest call site), skipping the
 * leading `Name: message` header that V8 and most browsers prepend. Returns an
 * empty string when no frame line is present, so the family key degrades to
 * name+message rather than throwing.
 */
function topStackFrame(stack) {
    if (stack === null)
        return '';
    for (const rawLine of stack.split('\n')) {
        const line = rawLine.trim();
        // The first line is usually the `Error: message` header (no `at `). Frame
        // lines start with `at ` in V8; browsers vary, so also accept an `@`-form
        // (Firefox/Safari: `fn@url:line:col`). Take the first that looks like a frame.
        if (line.startsWith('at ') || line.includes('@')) {
            return line;
        }
    }
    return '';
}
/**
 * Build the stable family hash for an exception/client-error from its name,
 * message and top stack frame. Pure string concatenation (no hashing) keeps it
 * human-readable in the dashboard and trivially equal across the server
 * interceptor and the client-error controller, which both call this.
 */
export function exceptionFamilyHash(parts) {
    const frame = topStackFrame(parts.stack);
    return `${parts.name}:${parts.message}:${frame}`;
}
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