christopherdavenport

Financial institution accounting fundamentals (journals, ledgers, sub-ledgers, chart of accounts) and US GAAP (FASB ASC) reference for FI operations.

US financial regulation lookup and compliance analysis (Reg DD, Reg E, Reg Z, Reg CC, BSA/AML, Dodd-Frank).

Lit web component library expertise covering LitElement, reactive properties, templates, styles, lifecycle, decorators, @lit/task, reactive controllers, @lit/context, form-associated elements, ElementInternals, custom directives, Shadow DOM accessibility, and testing

Client routing for Lit components via @lit-labs/router — Router/Routes reactive controllers, URLPattern matching, nested routing, navigation, lifecycle, and pitfalls

Jack Henry Design System (jackhenry.design/v2) — components, foundations, design tokens, content guidelines.

Go language best practices synthesizing Effective Go, the Google and Uber style guides, and the Go Code Review Comments — covering naming, control flow, errors, interfaces, concurrency, generics, testing, modules, tooling, and modern stdlib (context, log/slog, errors.Is/As, iter.Seq).

Google Cloud Spanner best practices — schema design (primary keys, hotspots, UUID/bit-reversed sequences, hash sharding), interleaved tables, secondary indexes (STORING, NULL_FILTERED), transactions (read-only, read-write, partitioned DML), query optimization, schema evolution pitfalls, and the Go client SDK (cloud.google.com/go/spanner).

SQLite best practices — schema design and STRICT tables, the must-set pragmas (journal_mode=WAL, busy_timeout, foreign_keys, synchronous=NORMAL), the locking model and BEGIN IMMEDIATE vs DEFERRED, indexes and EXPLAIN QUERY PLAN, JSON1/JSONB with generated-column indexing, the Go client (database/sql with mattn/go-sqlite3 or modernc.org/sqlite, two-pool writer/reader pattern, DSN pragma syntax), and server-side production use (Litestream/LiteFS/Turso patterns, online backup, schema migration on a live database).

Google Cloud Pub/Sub best practices — topics & schemas (Avro/Protobuf, BACKWARD/FORWARD compatibility), subscription types (pull / push / BigQuery / Cloud Storage export), delivery guarantees (at-least-once vs exactly-once), ordering keys, dead-letter topics, ack deadline / lease management, publisher batching & flow control, and the Go client SDK (cloud.google.com/go/pubsub).

TypeScript best practices — covering the structural type system, generics & constraints, utility & advanced types, discriminated unions & exhaustiveness, classes & OOP (constructors, access modifiers, abstract, getters/setters, #fields), error handling with throw / try / catch and typed Error subclasses, async with AbortSignal cancellation and AsyncIterable, immutability with readonly / as const / satisfies, ESM modules, strict tsconfig, naming, and testing patterns. Includes a dedicated section on functional patterns (pure functions, hand-rolled pipe, Result<T, E>) for codebases that lean that way. Stdlib-only — no library recommendations.