fix(legacy-json): use leftHandAssign in more cases

src/generators/jsx-ast/utils/__tests__/buildBarProps.test.mjs

@@ -13,6 +13,7 @@ mock.module('../../../../utils/generators.mjs', {
       { version: '18.0.0', isLts: true, isCurrent: false },
       { version: '19.0.0', isLts: false, isCurrent: true },
     ],
+    leftHandAssign: Object.assign,
     getVersionFromSemVer: version => version.split('.')[0],
     getVersionURL: (version, api) => `/api/${version}/${api}`,
   },

src/generators/legacy-json/utils/parseList.mjs

@@ -5,6 +5,7 @@ import {
   TYPE_EXPRESSION,
 } from '../constants.mjs';
 import parseSignature from './parseSignature.mjs';
+import { leftHandAssign } from '../../../utils/generators.mjs';
 import createQueries from '../../../utils/queries/index.mjs';
 import { transformNodesToString } from '../../../utils/unist.mjs';
 
@@ -95,6 +96,10 @@ export function parseList(section, nodes) {
   // Update the section based on its type and parsed values
   switch (section.type) {
     case 'ctor':
+      // Constructors are their own signatures
+      leftHandAssign(section, parseSignature(section.textRaw, values));
+      break;
+
     case 'classMethod':
     case 'method':
       // For methods and constructors, parse and attach signatures
@@ -104,10 +109,7 @@ export function parseList(section, nodes) {
     case 'property':
       // For properties, update type and other details if values exist
       if (values.length) {
-        const { type, ...rest } = values[0];
-        section.type = type;
-        Object.assign(section, rest);
-        section.textRaw = `\`${section.name}\` ${section.textRaw}`;
+        leftHandAssign(section, values[0]);
       }
       break;
 

src/utils/generators.mjs

@@ -96,3 +96,16 @@ export const sortChanges = (changes, key = 'version') => {
     return compare(coerceSemVer(aVersion), coerceSemVer(bVersion));
   });
 };
+
+/**
+ * Assigns properties from one or more source objects to the target object
+ * **without overwriting existing keys** in the target.
+ *
+ * Similar to `Object.assign`, but preserves the target's existing keys.
+ * The target object is mutated in place.
+ *
+ * @param {Object} target - The object to assign properties to.
+ * @param {Object} source - The source object
+ */
+export const leftHandAssign = (target, source) =>
+  Object.keys(source).forEach(k => k in target || (target[k] = source[k]));