perf: replace lodash.merge with native Object.assign

lib/schema-manager.js

@@ -1,4 +1,3 @@
-const _merge = require('lodash.merge');
 const plural = require('pluralize');
 const { capitalize, omit, pick } = require('./utils/lodash-natives');
 
@@ -53,7 +52,8 @@ class SchemaManager {
       disableComments: true,
     };
 
-    this._verifyOptions(_merge({}, defaultOptions, options));
+    // eslint-disable-next-line prefer-object-spread
+    this._verifyOptions(Object.assign({}, defaultOptions, options));
   }
 
   /**
@@ -85,7 +85,8 @@ class SchemaManager {
     if (model === undefined) throw new Error('Missing method argument');
     if (strategy === undefined) throw new Error('Mising method argument');
 
-    this._verifyModelOptions(_merge({}, defaultOptions, options));
+    // eslint-disable-next-line prefer-object-spread
+    this._verifyModelOptions(Object.assign({}, defaultOptions, options));
     this._verifyModel(model);
     this._verifyStrategy(strategy);
 

lib/type-mapper.js

@@ -1,5 +1,3 @@
-const _merge = require('lodash.merge');
-
 // Common types.  These should never be exposed directly but, rather, get cloned
 // before being returned.  This avoids cross-contamination if a user modifies
 // the their schema.
@@ -345,7 +343,7 @@ class TypeMapper {
     // Sequelize options applying to all types starting below
     // ----------------------------------------------------------------------
     if (properties.allowNull === true) {
-      _merge(result, this.constructor._getNullableType(result.type, strategy));
+      Object.assign(result, this.constructor._getNullableType(result.type, strategy));
     }
 
     if (properties.defaultValue !== undefined) {

lib/utils/lodash-natives.js

@@ -1,11 +1,10 @@
 /**
  * Native alternatives for lodash.
  *
- * Please note:
- * - not using alternatives that do not work cross-browser (see link)
- * - disabling eslint rules so examples stay identical to github
+ * @comment disabling eslint rules so examples stay identical to github
  *
  * @see {@link https://github.com/you-dont-need/You-Dont-Need-Lodash-Underscore}
+ * @see {@link https://xebia.com/blog/you-might-not-need-lodash-in-your-es2015-project/}
  */
 
 /* eslint-disable func-names */

package.json

@@ -46,7 +46,6 @@
     "oasv3"
   ],
   "dependencies": {
-    "lodash.merge": "^4.6.2",
     "pluralize": "^8.0.0"
   },
   "devDependencies": {