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  1. modulus-check-uk modulus-check-uk Public

    Validate UK sort code + account number combinations using the official Pay.UK / VocaLink modulus-checking rules. TypeScript, zero-dependency, all 34 official test cases passing.

    TypeScript

  2. card-validator card-validator Public

    Luhn check, card-network detection (Visa, Mastercard, Amex, Discover, Diners, JCB, Maestro, UnionPay) and CVV/expiry validation. TypeScript, zero-dependency, PCI-conscious.

    TypeScript

  3. pii-redact pii-redact Public

    Mask PANs, sort codes, account numbers, IBANs, emails, phones, DOBs, NI numbers and SSNs out of strings and log objects. Configurable strategy, pino & winston adapters. TypeScript, zero-dependency.

    TypeScript

  4. decide decide Public

    A tiny decision-table and scorecard evaluator with explainable, auditable output. Fixed operators, custom predicates and a safe expression language. TypeScript, zero-dependency.

    TypeScript

  5. audit-log audit-log Public

    Tamper-evident, append-only audit logging for Node: SHA-256 hash chain (optional HMAC), RBAC-aware events, built-in PII redaction, pluggable sinks. Built to survive an audit.

    TypeScript

  6. conc-lint conc-lint Public

    Compliance-as-code: check a declarative manifest against FCA Consumer Duty/CONC, CFPB and FCAC rule packs in CI. Each rule maps a control to a check. Not legal advice.

    TypeScript

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