typespec-custom-emitters

Create custom TypeScript emitters that generate outputs from TypeSpec programs.

1|Updated Mar 15, 2026

Search Tags:#typescript #codegen #typespec #output-format #emitters #multi-emitter

Ready to run

npx skills add https://github.com/hafley66/claude-research --skill typespec-custom-emitters

💬 Prompt for ChatGPT / Claude Chat▼

Please help me install this Agent Skill.
Skill: typespec-custom-emitters
Source: https://github.com/hafley66/claude-research/tree/main/skills/typespec-custom-emitters
Command: npx skills add https://github.com/hafley66/claude-research --skill typespec-custom-emitters

SYSTEM DOCUMENTATION & REQUIREMENTS

What problem does it solve?

Custom TypeSpec emitters let you generate outputs across many formats from a single model. This Skill enables building and configuring emitters to produce tables, code files, IDL, YAML/JSON configs, and other formats.

Core Features & Use Cases

Create custom emitters in TypeScript that access the TypeSpec program via JS API
Emit to tables, CSV, JSON, YAML, code files, IDL, config
Configure emitter options in tspconfig.yaml and coordinate multi-emitter projects

Quick Start

Create a TypeScript emitter with a $onEmit function and run tsp compile --emit ./typespec-custom-emitters to generate outputs.

Frequently Asked Questions about typespec-custom-emitters

High-intent search queries and answers about installing and using this skill.

FAQPage Schema

How do I generate custom output formats from a TypeSpec model?▼

Yes, you can configure multiple custom TypeSpec emitters in a single tspconfig.yaml file to coordinate multi-emitter projects, allowing you to simultaneously generate tables, IDL, and configuration files from one model.

What is the best way to output YAML or JSON configuration files using TypeSpec?▼

The best way to output YAML or JSON configuration files using TypeSpec is to create a custom TypeScript emitter that traverses the program model and serializes the data into your desired configuration format.

Does generating code from TypeSpec require specific compiler configuration?▼

Generating code from TypeSpec requires defining emitter options and diagnostics handling in your tspconfig.yaml file, and executing the compile command with the --emit flag pointing to your custom emitter.

When do I need to build a custom TypeSpec emitter instead of using existing ones?▼

You need to build a custom TypeSpec emitter when your complex project requires generating specialized outputs like tables, specific code generation patterns, or configuration files that existing emitters do not support.