@naturalcycles/db-lib

@naturalcycles/db-lib

Lowest Common Denominator API to supported Databases

Supported databases

• datastore-lib (GCP Datastore, or Firestore in Datastore mode)
• firestore-lib (Firestore in Native mode)
• mysql-lib (MySQL)

Features

• CommonDB, CommonDao, DBQuery
• Streaming (Node.js streams transformed into RxJS Observable streams)
• DBM / BM, validation, conversion (Joi-powered)
• Conventions
  • String ids
  • created, updated (unix timestamps)
  • Dates as ISO strings, e.g 2019-06-21
  • Timestamps as unixtimestamps (seconds, not milliseconds; UTC)
  • Complex objects as JSON serialized to string (DBM), converted to object (BM)

Concept

CommonDB is a low-level API (no high-level sugar-syntax). CommonDao is the opposite - a high-level API (with convenience methods), built on top of CommonDB.

Concerns of CommonDB:

• Access to DB (all tables): CRUD (create, read, update, delete)
• Batch methods (cause they can be more optimal if implemented "natively")
• Querying
• Streaming

Concerns of CommonDao:

• Access to one DB Table ("kind")
• Transformation between DBM and BM, validation/conversion
• Auto-generating id, created, updated fields

DEBUG namespaces

• nc:db-lib:commondao
• nc:db-lib:inmemorydb

Packaging

• engines.node >= 10.13: Latest Node.js LTS
• main: dist/index.js: commonjs, es2018
• types: dist/index.d.ts: typescript types
• /src folder with source *.ts files included