GENERAL PROJECT
TypeScript Library / Package
Planned
Reusable Package and Public API Design
Reusable TypeScript package focused on public APIs, types, testing, and distribution.
Project
TypeScript Library / Package
Preview coming soon
TypeScript Library / Package
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.
Technology Plan
Implementation Scope
Planned behaviors, architecture decisions, and evidence this project should produce.Public API
Choose a focused problem and expose only intentional functions/types.- Named exports.
- Clear parameter types.
- Predictable return values.
- Documented errors.
Package structure
Separate source, tests, declarations, and build output.- src/
- dist/
- package exports
- type declarations
Quality
Treat consumers as external callers.- Automated tests.
- Semantic version thinking.
- Backward-compatible API decisions.
- Examples.
Distribution
Make the package usable outside its own repository.- README installation.
- Import examples.
- Package metadata.
- Optional npm publish step.
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.