DEVELOPER SANDBOX Academy of Mastery
TypeScript Library / Package

Reusable TypeScript package focused on public APIs, types, testing, and distribution.

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GENERAL PROJECT

TypeScript Library / Package

Reusable Package and Public API Design
Reusable TypeScript package focused on public APIs, types, testing, and distribution.

PLANNED PROJECT

Learn to design code for other developers to consume instead of designing another standalone application. The implementation is planned.

PLANNED PROJECT

TypeScript Library / Package

Learn to design code for other developers to consume instead of designing another standalone application. The implementation is planned.
Learn to design code for other developers to consume instead of designing another standalone application. The implementation is planned.
02

Purpose & Learning Objectives

Why this project exists and what the implementation should teach.
Purpose / Learning

Purpose

Learn to design code for other developers to consume instead of designing another standalone application.

Learning Objectives

  • Design a small stable public API.
  • Separate exported behavior from internal implementation.
  • Publish useful TypeScript declarations.
  • Handle package entry points and module format deliberately.
  • Create automated tests around public behavior.
  • Document parameters, return values, errors, and examples.
  • Optionally prepare for npm publication after the package is worth publishing.
03

Technology Plan

Current, planned, legacy, or candidate technologies for this project.
Language

TypeScript

Package Tooling

npm
TypeScript Compiler
ES Modules

Testing Candidate

Vitest

Distribution

GitHub
npm package structure

04

Implementation Scope

Planned behaviors, architecture decisions, and evidence this project should produce.
Public API
Choose a focused problem and expose only intentional functions/types.
Package structure
Separate source, tests, declarations, and build output.
Quality
Treat consumers as external callers.
Distribution
Make the package usable outside its own repository.
05

Project Notes

Implementation context, boundaries, and later expansion.
Project Notes

Boundary

The goal is package-quality API design, not publishing for its own sake.

Comparison

This complements the TypeScript API Service: one designs a reusable code API, the other an HTTP API.