Fix #100 - Interface properties not getting inference

Author: ShukantPal

packages/webdoc-parser/src/symbols-babel/extract-symbol.js

@@ -308,7 +308,8 @@ export default function extractSymbol(
       nodeSymbol.meta.returns = extractReturns(node);
       nodeSymbol.meta.type = "MethodDoc";
     } else if (isTSPropertySignature(node)) {
-      // TODO: dataType
+      nodeSymbol.meta.readonly = node.readonly;
+      nodeSymbol.meta.dataType = extractType(node);
       nodeSymbol.meta.type = "PropertyDoc";
     }
 

packages/webdoc-parser/test/lang-ts.js

@@ -52,6 +52,22 @@ describe("@webdoc/parser.LanguageIntegration{@lang ts}", function() {
     expect(symbolInitProperty.meta.readonly).to.equal(true);
   });
 
+  it("should parse interfaces correctly", function() {
+    const symbolTree = buildSymbolTree(`
+      interface IModelSchema {
+        readonly schemaId: string;        
+        serialize(): any;
+      }
+    `, "*.ts");
+
+    const schemaId = findSymbol("IModelSchema.schemaId", symbolTree);
+    const serialize = findSymbol("IModelSchema.serialize", symbolTree);
+
+    expect(schemaId.meta.readonly).to.equal(true);
+    expect(schemaId.meta.dataType[0]).to.equal("string");
+    expect(serialize.meta.returns[0].dataType[0]).to.equal("any");
+  });
+
   it("should be able to parse type-casted objects for property symbols", function() {
     const symtree = buildSymbolTree(`
       (objectName as ObjectType).propertyName = "dataValue";