@fhir-toolkit/r4b-models

Immutable models and fluent builders for FHIR R4B (4.3.0) resources.

Installation

npm install @fhir-toolkit/r4b-models

Usage

Builders

import { PatientBuilder, ObservationBuilder } from '@fhir-toolkit/r4b-models';

const patient = new PatientBuilder()
  .setId('123')
  .addName({ given: ['John'], family: 'Doe' })
  .setGender('male')
  .setBirthDate('1990-01-01')
  .build();

Models

import { Patient } from '@fhir-toolkit/r4b-models';

const patient = new Patient({
  resourceType: 'Patient',
  id: '123',
  name: [{ given: ['John'], family: 'Doe' }]
});

// Immutable updates
const updated = patient.clone({ gender: 'male' });

Type Guards

import { isPatient } from '@fhir-toolkit/r4b-models';

if (isPatient(resource)) {
  console.log(resource.name);
}

Features

• Fluent builder pattern for all resources
• Immutable model classes with clone() and toJSON()
• Choice types support (value[x])
• Type guards for runtime type checking

Related Packages

• @fhir-toolkit/r4b-types - Type definitions
• @fhir-toolkit/r4b-specs - StructureDefinitions for validation
• @fhir-toolkit/yafv - FHIR validator

License

MIT