From b1646420c76bd756f06720fe8f1593f01518294b Mon Sep 17 00:00:00 2001
From: David Contreras <dvd.cnt@gmail.com>
Date: Fri, 26 Apr 2024 23:20:57 -0600
Subject: [PATCH] Added config test

---
 src/core/function/config.js         | 33 ++++++++++++++---------------
 test/unit-tests/core/config.test.js |  6 ++++++
 types/index.d.ts                    |  1 +
 3 files changed, 23 insertions(+), 17 deletions(-)

diff --git a/src/core/function/config.js b/src/core/function/config.js
index f8d06b1524..9efd7fb6d1 100644
--- a/src/core/function/config.js
+++ b/src/core/function/config.js
@@ -1,4 +1,4 @@
-import { clone, mapObject, deepExtend } from '../../utils/object.js'
+import { clone, deepExtend } from '../../utils/object.js'
 import { DEFAULT_CONFIG } from '../config.js'
 
 export const MATRIX_OPTIONS = ['Matrix', 'Array'] // valid values for option matrix
@@ -53,34 +53,33 @@ export function configFactory (config, emit) {
   function _config (options) {
     if (options) {
       if (options.epsilon !== undefined) {
-        // backwards compatibility
+        // this if is only for backwards compatibility, it can be removed in the future.
         console.warn('Warning: The configuration option "epsilon" is deprecated. Use "relTol" and "absTol" instead.')
-        const optionsFix = mapObject(options, clone)
+        const optionsFix = clone(options)
         optionsFix.relTol = options.epsilon
         optionsFix.absTol = options.epsilon * 1e-3
         delete optionsFix.epsilon
         return _config(optionsFix)
-      } else {
-        const prev = mapObject(config, clone)
+      }
+      const prev = clone(config)
 
-        // validate some of the options
-        validateOption(options, 'matrix', MATRIX_OPTIONS)
-        validateOption(options, 'number', NUMBER_OPTIONS)
+      // validate some of the options
+      validateOption(options, 'matrix', MATRIX_OPTIONS)
+      validateOption(options, 'number', NUMBER_OPTIONS)
 
-        // merge options
-        deepExtend(config, options)
+      // merge options
+      deepExtend(config, options)
 
-        const curr = mapObject(config, clone)
+      const curr = clone(config)
 
-        const changes = mapObject(options, clone)
+      const changes = clone(options)
 
-        // emit 'config' event
-        emit('config', curr, prev, changes)
+      // emit 'config' event
+      emit('config', curr, prev, changes)
 
-        return curr
-      }
+      return curr
     } else {
-      return mapObject(config, clone)
+      return clone(config)
     }
   }
 
diff --git a/test/unit-tests/core/config.test.js b/test/unit-tests/core/config.test.js
index 519ce76526..45802b4cdd 100644
--- a/test/unit-tests/core/config.test.js
+++ b/test/unit-tests/core/config.test.js
@@ -17,4 +17,10 @@ describe('config', function () {
   })
 
   // TODO: test function config
+
+  it('should work with config epsilon during depercation', function () {
+    const math2 = math.create()
+    assert.doesNotThrow(function () { math2.config({ epsilon: 1e-5 }) })
+    assert.strictEqual(math2.config().relTol, 1e-5)
+  })
 })
diff --git a/types/index.d.ts b/types/index.d.ts
index 67a22b6d42..fbd6bfe181 100644
--- a/types/index.d.ts
+++ b/types/index.d.ts
@@ -4300,6 +4300,7 @@ export interface Help {
 export interface ConfigOptions {
   relTol?: number
   absTol?: number
+  epsilon?: number
   matrix?: 'Matrix' | 'Array'
   number?: 'number' | 'BigNumber' | 'Fraction'
   precision?: number