@dudousxd/nestjs-telescope/dist/query/query-family-hash.js

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

// packages/core/src/query/query-family-hash.ts
/** Normalize an SQL string into a template: lowercase, collapse whitespace,
 *  replace string/number literals and bound-param placeholders with '?'. */
function normalizeSql(sql) {
    return sql
        .toLowerCase()
        .replace(/'(?:[^']|'')*'/g, '?') // string literals
        .replace(/\b\d+(?:\.\d+)?\b/g, '?') // numeric literals
        .replace(/\?/g, '?') // already-parameterized (no-op, keeps idempotency explicit)
        .replace(/\s+/g, ' ')
        .trim();
}
/** Stable 32-bit FNV-1a hash, hex-encoded. Deterministic across processes. */
function fnv1a(input) {
    let hash = 0x811c9dc5;
    for (let i = 0; i < input.length; i++) {
        hash ^= input.charCodeAt(i);
        hash = Math.imul(hash, 0x01000193);
    }
    return (hash >>> 0).toString(16).padStart(8, '0');
}
/** Grouping key for "the same query" — same template, any bound values. */
export function queryFamilyHash(sql) {
    return fnv1a(normalizeSql(sql));
}
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