feat: parse zeebe script

lib/zeebe/util/feelUtility.js

@@ -159,6 +159,21 @@ export function getResultContext(expression, variables = {}) {
  * @returns {{ expression: String, unresolved: Array<String> }}}
  */
 function getExpressionDetails(variable, origin) {
+  const expression = getScriptExpression(variable, origin) || getIoExpression(variable, origin);
+
+  if (!expression) {
+    return;
+  }
+
+  const result = getResultContext(expression);
+
+  const unresolved = findUnresolvedVariables(result) ;
+
+  return { expression, unresolved };
+}
+
+
+function getIoExpression(variable, origin) {
   const ioMapping = getExtensionElementsList(origin, 'zeebe:IoMapping')[0];
 
   if (!ioMapping) {
@@ -183,12 +198,19 @@ function getExpressionDetails(variable, origin) {
   }
 
   const expression = mapping.source.substring(1);
+  return expression;
+}
 
-  const result = getResultContext(expression);
+function getScriptExpression(variable, origin) {
+  const script = getExtensionElementsList(origin, 'zeebe:Script')[0];
 
-  const unresolved = findUnresolvedVariables(result) ;
+  if (!script) {
+    return;
+  }
 
-  return { expression, unresolved };
+  if (script.resultVariable === variable.name) {
+    return script.expression?.substring(1);
+  }
 }
 
 /**

test/fixtures/zeebe/mappings/script-task.bpmn

@@ -0,0 +1,17 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<bpmn:definitions xmlns:bpmn="http://www.omg.org/spec/BPMN/20100524/MODEL" xmlns:bpmndi="http://www.omg.org/spec/BPMN/20100524/DI" xmlns:dc="http://www.omg.org/spec/DD/20100524/DC" xmlns:zeebe="http://camunda.org/schema/zeebe/1.0" xmlns:modeler="http://camunda.org/schema/modeler/1.0" id="Definitions_0qieuld" targetNamespace="http://bpmn.io/schema/bpmn" exporter="Camunda Modeler" exporterVersion="5.28.0" modeler:executionPlatform="Camunda Cloud" modeler:executionPlatformVersion="8.6.0">
+  <bpmn:process id="Process_1" isExecutable="true">
+    <bpmn:scriptTask id="Activity_0kxqawv" name="Script Task">
+      <bpmn:extensionElements>
+        <zeebe:script expression="={&#10;  foo: 123&#10;}" resultVariable="scriptResult" />
+      </bpmn:extensionElements>
+    </bpmn:scriptTask>
+  </bpmn:process>
+  <bpmndi:BPMNDiagram id="BPMNDiagram_1">
+    <bpmndi:BPMNPlane id="BPMNPlane_1" bpmnElement="Process_1">
+      <bpmndi:BPMNShape id="Activity_1g8b868_di" bpmnElement="Activity_0kxqawv">
+        <dc:Bounds x="160" y="80" width="100" height="80" />
+      </bpmndi:BPMNShape>
+    </bpmndi:BPMNPlane>
+  </bpmndi:BPMNDiagram>
+</bpmn:definitions>

test/spec/zeebe/Mappings.spec.js

@@ -12,6 +12,7 @@ import chainedMappingsXML from 'test/fixtures/zeebe/mappings/chained-mappings.bp
 import primitivesXML from 'test/fixtures/zeebe/mappings/primitives.bpmn';
 import mergingXML from 'test/fixtures/zeebe/mappings/merging.bpmn';
 import scopeXML from 'test/fixtures/zeebe/mappings/scope.bpmn';
+import scriptTaskXML from 'test/fixtures/zeebe/mappings/script-task.bpmn';
 
 import VariableProvider from 'lib/VariableProvider';
 
@@ -316,6 +317,34 @@ describe('ZeebeVariableResolver - Variable Mappings', function() {
 
   });
 
+
+  describe('Script Task', function() {
+
+    beforeEach(bootstrap(scriptTaskXML));
+
+    it('should add type annotation for script tasks', inject(async function(variableResolver, elementRegistry) {
+
+      // given
+      const root = elementRegistry.get('Process_1');
+
+      // when
+      const variables = await variableResolver.getVariablesForElement(root.businessObject);
+
+      // then
+      expect(variables).to.variableEqual([
+        {
+          name: 'scriptResult',
+          type: 'Context',
+          info: '',
+          entries: [
+            { name: 'foo', type: 'Number', info: '123', entries: [] },
+          ]
+        }
+      ]);
+    }));
+
+  });
+
 });
 
 // helpers //////////////////////