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@lacspace/audit-log

v1.2.0Commerce & Ledger0 deps

Structured audit-trail toolkit — who did what, when, with before/after diffs, actor attribution and field-level redaction; seal events into a tamper-evident SHA-256 hash chain (with retention pruning + verifiable checkpoints); and query, filter and export the trail to NDJSON/JSON. Zero-dependency, isomorphic.

npm i @lacspace/audit-log
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Usage

audit-log.ts
import { auditEvent, createSealedLog, diff } from "@lacspace/audit-log";

// who did what, with a before/after diff and redaction
const evt = auditEvent({
  actor:  { id: "admin_2", type: "admin" },
  action: "product.price.update",
  target: { type: "product", id: "sku_1" },
  changes: diff({ price: 1200 }, { price: 999 }),
});

// seal it into a tamper-evident SHA-256 hash chain
const log = createSealedLog();
await log.append(evt);
await log.verify();   // { valid: true, length: 1 }
// edit any stored entry and re-verify -> { valid: false, brokenAt, reason } — proof it was altered

Exports 13

auditEventdiffredactEventformatEventcreateAuditorREDACTEDcreateSealedLogsealEventappendToChaincreateChainverifyChainGENESIS_HASHAuditError

Keywords

audit-logaudit-trailtamper-evidenthash-chaincompliancediff

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