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2.0.0 Beta 1 (JavaScript Release)

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@cmoesel cmoesel released this 09 Oct 15:44
2.0.0-beta.1
f43354d

Overview

CQL Execution 2.0.0 Beta 1 is the first beta of the brand new JavaScript port of CQL Execution, implementing the CQL 1.4.x specification. While previous versions were released as JavaScript modules, they were authored using CoffeeScript. CQL Exectuon 2.0.0 is authored using modern editions of JavaScript.

New Features

CQL Execution 2.0.0 also introduces support for significant CQL features that CQL Execution 1.4.x did not support; namely:

  • support for the is operator
  • support for the as operator
  • support for overloaded functions

To take advantage of these new features, PatientSource implementations need to implement _is and _typeHierarchy functions on the objects they return to the CQL Execution framework. For examples, see the sample PatientSource and cql-exec-fhir's PatientSource.

Backward Compatibility

CQL Execution 2.0.0 is intended to be primarily backward compatible w/ the CQL Execution 1.4.x releases, but we've chosen to tag it as a 2.x released because:

  • we are changing our versioning scheme to use semantic versioning for all future releases
  • we want to signal that a full rewrite of the source code inherently carries risk that consumers need to consider

The one exception to backward compatibility is that CQL Execution 2.0.0 replaced the old sample FHIR PatientSource with a simpler sample PatientSource. We hope that consumers were not using the former FHIR PatientSource anyway, as it was incomplete and based on a very old unreleased version of FHIR. Consumers of this library who require support for FHIR should use the much more complete and up-to-date cql-exec-fhir module.

Installation

This is a beta version of CQL Execution. To install it in your project, you can use one of the following commands:

  • YARN: yarn add cql-execution@beta or yarn add cql-execution@2.0.0-beta.1
  • NPM: npm install cql-execution@beta or npm install cql-execution@2.0.0-beta.1

If you are using cql-exec-fhir, you will also want to install its 1.5.0-beta.1 release:

  • YARN: yarn add cql-exec-fhir@beta or yarn add cql-exec-fhir@1.5.0-beta.1
  • NPM: npm install cql-exec-fhir@beta or npm install cql-exec-fhir@1.5.0-beta.1
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