FHIR Client
npm install fhir-kit-clientNode FHIR client library
* Support for R4 (4.0.1, 4.0.0, 3.5.0, 3.3.0, 3.2.0), STU3 (3.0.1, 1.8.0, 1.6.0, 1.4.0, 1.1.0) and DSTU2 (1.0.2)
* Support for all FHIR REST actions
* Support for FHIR operations
* Typescript support
* Pagination support for search results
* Batch and transaction support
* Support for absolute, in-bundle, and contained references
* Metadata caching on client instance
* SMART security support
* Capability-checking tool based on server capability statements
* Minimal dependencies
* Contemporary async/await structure
* Modern ES6 Classes
* TDD with Mocha
* URL polyfill (so it works in client-only apps without much trouble)
* Support optional parameters for the request, such as TLS key and cert
Project roadmap uses Github Projects.
There is now early Typescript support for this library. This library is
intended to be agnostic to the version of FHIR, but there is a WIP pattern to
use with @types/fhir.
Assume a project where you did the following setup:
``
> npm install fhir-kit-client
> npm install -D @types/fhir
Now in your code, you can:
`typescript
import Client from 'fhir-kit-client'
const client = new Client({ baseUrl: 'http://foo.com' })
const isPatient = (resource: fhir4.Resource): resource is fhir4.Patient => {
return resource.resourceType === 'Patient'
}
client
.read({resourceType: 'Patient', id: '12'})
.then(res => {
if (isPatient(res)) {
console.dir(res.name, { depth: 4})
}
})
`
This example uses a type guard for R4 Patient. If you are building an app that
connects to systems with different versions, you could write a wrapper for each
fhir version in your app.
Examples using promises...
`javascript
const Client = require('fhir-kit-client');
const fhirClient = new Client({
baseUrl: 'https://sb-fhir-stu3.smarthealthit.org/smartstu3/open'
});
// Get SMART URLs for OAuth
fhirClient.smartAuthMetadata().then((response) => {
console.log(response);
});
// Direct request
fhirClient.request('Patient/123')
.then(response => console.log(response));
fhirClient.request('Patient/123', { method: 'DELETE' })
.then(response => console.log(response));
// Read a patient
fhirClient
.read({ resourceType: 'Patient', id: '2e27c71e-30c8-4ceb-8c1c-5641e066c0a4' })
.then((response) => {
console.log(response);
});
// Search for patients, and page through results
fhirClient
.search({ resourceType: 'Patient', searchParams: { _count: '3', gender: 'female' } })
.then((response) => {
console.log(response);
return response;
})
.then((response) => {
console.log(response);
return fhirClient.nextPage(response);
})
.then((response) => {
console.log(response);
return fhirClient.prevPage(response);
})
.catch((error) => {
console.error(error);
});
`
Examples using async/await...
`javascript
const Client = require('fhir-kit-client');
const fhirClient = new Client({
baseUrl: 'https://sb-fhir-stu3.smarthealthit.org/smartstu3/open'
});
async function asyncExamples() {
// Get SMART URLs for OAuth
let response = await fhirClient.smartAuthMetadata();
console.log(response);
// Read a patient
response = await fhirClient
.read({ resourceType: 'Patient', id: '2e27c71e-30c8-4ceb-8c1c-5641e066c0a4' });
console.log(response);
// Search for a patient with name matching abbott, then paging
let searchResponse = await fhirClient
.search({ resourceType: 'Patient', searchParams: { name: 'abbott ' } })
console.log(searchResponse);
searchResponse = await fhirClient.nextPage(searchResponse);
console.log(searchResponse);
searchResponse = await fhirClient.prevPage(searchResponse);
console.log(searchResponse);
}
asyncExamples();
`
For more examples see the JS Docs and Launch Examples below.
JSDoc-generated documentation with plenty of examples
To see how to follow launch and authorization workflows for FHIR applications,
see the examples directory and examples README.
FHIRKit Create React App
provides a create-react-app
template that can be used to create a sample React app using FHIRKit Client.
See https://github.com/Vermonster/fhir-kit-client-examples for examples in React,
Angular, and React Native.
The debug library can provide logging
during development. Two different logging namespaces are provided, fhir-kit-
client:info logs each request and response, and fhir-kit-client:error logsfhir-kit-client:*
errors. To enable logging during development, add one of the namespaces to the
DEBUG environment variable, or use to enable both.
`
$ DEBUG=fhir-kit-client:* node smart-launch.js
FHIRKit Client is an open source Node.js FHIR client library that welcomes
community contributions with enthusiasm.
All are welcome to participate. By participating in this project, you agree to
follow the Code of
Conduct.
Please see our
Contributing
document for more details on how to get started.
MIT
Copyright (c) 2018 Vermonster LLC