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@aehrc/fsh-lsp

v0.8.6

Published

Language Server Protocol implementation for FHIR Shorthand (FSH) with syntax highlighting, auto-completion, and HL7 FHIR resource documentation

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Links

Git

Maintainers

johngrimesjohngrimesdionmcmdionmcmjgsuessjgsuess

Keywords

fhirfshfhir-shorthandlanguage-serverlsphl7healthcareinteroperability

Readme

FSH Language Server

License GitLab

LispelFisch

A Language Server Protocol (LSP) implementation for FHIR Shorthand (FSH), providing intelligent code editing features for healthcare interoperability development.

Editor Integrations

The FSH Language Server can be used with any LSP-compatible editor:

Each integration is maintained in a separate repository with its own release cycle.

Features

  • Syntax Highlighting: Full syntax highlighting for FHIR Shorthand (FSH) files
  • Go to Definition: Navigate to profile, extension, and instance definitions
  • Path Expression Completion: Intelligent completion for nested FHIR element paths with dot notation (e.g., participant. shows individual, type, etc.)
  • Auto-completion: Intelligent completion for FHIR resources, elements, and FSH keywords
  • Hover Documentation: Show FHIR element types, cardinality, code definitions, and ValueSet bindings
  • Inlay Hints: Display type information inline for assignments
  • Document Symbols: Outline view showing profiles, extensions, instances, and value sets
  • FHIR Type Resolution: Resolves FHIR resource types and element paths
  • Code System Integration: Lookup code definitions from FHIR terminology servers
  • Choice Type Expansion: Automatically expands choice types (e.g., value[x] → valueString, valueQuantity, etc.)

Installation

Install the language server:

npm install -g @aehrc/fsh-lsp

Then install the integration for your editor (see Editor Integrations above).

Development

# Install dependencies
cd packages/language-server
npm install

# Build
npm run build

# Watch mode (continuous rebuild)
npm run build:watch

# Run tests
npm test

📖 Full Development Guide — Building, testing, and debugging

Quick Links

Requirements

  • Node.js v16 or later
  • VSCode or compatible LSP client

Links

  • GitLab Repository: https://gitlab.com/australian-e-health-research-centre/fsh-lsp
  • Issue Tracker: https://gitlab.com/australian-e-health-research-centre/fsh-lsp/-/issues
  • FHIR Shorthand Specification: https://build.fhir.org/ig/HL7/fhir-shorthand/
  • Sushi (FSH Compiler): https://fshschool.org/docs/sushi/

Architecture

See ARCHITECTURE.md for detailed architecture documentation.

Key components:

  • FshDefinitionProvider: Go-to-definition functionality
  • FshCompletionProvider: Intelligent autocomplete
  • FshHoverProvider: Documentation on hover
  • FshSymbolProvider: Document outline/symbols
  • FshInlayHintsProvider: Type hints for assignments
  • FhirTypeResolver: FHIR resource and element type resolution
  • FhirDefinitionsLoader: Loads FHIR definitions from packages

Testing

Comprehensive test suite covering all providers:

  • Definition provider tests
  • Completion provider tests
  • Hover provider tests
  • Symbol provider tests
  • Utility function tests

Run tests with: npm test

License

Apache-2.0

Contributing

We welcome contributions! Please see CONTRIBUTING.md for details on how to get started.

Code of Conduct

This project adheres to a Code of Conduct. By participating, you are expected to uphold this code.

Acknowledgements

Developed by CSIRO's Australian e-Health Research Centre (AEHRC).