diff --git a/packages/is-shallow-equal/index.js b/packages/is-shallow-equal/index.js
index e52a593a18c4e4..924799d2a6d51a 100644
--- a/packages/is-shallow-equal/index.js
+++ b/packages/is-shallow-equal/index.js
@@ -8,12 +8,16 @@ var isShallowEqualArrays = require( './arrays' );
 
 var isArray = Array.isArray;
 
+/**
+ * @typedef {Record<any,any>} ComparableObject
+ */
+
 /**
  * Returns true if the two arrays or objects are shallow equal, or false
  * otherwise.
  *
- * @param {any[]|Object} a First object or array to compare.
- * @param {any[]|Object} b Second object or array to compare.
+ * @param {any[]|ComparableObject} a First object or array to compare.
+ * @param {any[]|ComparableObject} b Second object or array to compare.
  *
  * @return {boolean} Whether the two values are shallow equal.
  */
diff --git a/packages/is-shallow-equal/objects.js b/packages/is-shallow-equal/objects.js
index ebe1105b196156..2c7583aba9ce1d 100644
--- a/packages/is-shallow-equal/objects.js
+++ b/packages/is-shallow-equal/objects.js
@@ -5,8 +5,8 @@ var keys = Object.keys;
 /**
  * Returns true if the two objects are shallow equal, or false otherwise.
  *
- * @param {Object} a First object to compare.
- * @param {Object} b Second object to compare.
+ * @param {import('.').ComparableObject} a First object to compare.
+ * @param {import('.').ComparableObject} b Second object to compare.
  *
  * @return {boolean} Whether the two objects are shallow equal.
  */