chore: optimize a few code paths

lib/deferrable.js

@@ -3,13 +3,12 @@
 const { classToInvokable } = require('./utils');
 
 class ABSTRACT {
-  static toString() {
-    const instance = new this();
-    return instance.toString.apply(instance, arguments);
+  static toString(...args) {
+    return new this().toString(...args);
   }
 
-  toString() {
-    return this.toSql.apply(this, arguments);
+  toString(...args) {
+    return this.toSql(...args);
   }
 
   toSql() {

lib/dialects/postgres/connection-manager.js

@@ -77,10 +77,10 @@ class ConnectionManager extends AbstractConnectionManager {
     this.oidParserMap = new Map();
   }
 
-  getTypeParser(oid) {
+  getTypeParser(oid, ...args) {
     if (this.oidParserMap.get(oid)) return this.oidParserMap.get(oid);
 
-    return this.lib.types.getTypeParser.apply(undefined, arguments);
+    return this.lib.types.getTypeParser(oid, ...args);
   }
 
   connect(config) {

lib/model.js

@@ -19,6 +19,14 @@ const Hooks = require('./hooks');
 const associationsMixin = require('./associations/mixin');
 const Op = require('./operators');
 
+// This list will quickly become dated, but failing to maintain this list just means
+// we won't throw a warning when we should. At least most common cases will forever be covered
+// so we stop throwing erroneous warnings when we shouldn't.
+const validQueryKeywords = new Set(['where', 'attributes', 'paranoid', 'include', 'order', 'limit', 'offset',
+  'transaction', 'lock', 'raw', 'logging', 'benchmark', 'having', 'searchPath', 'rejectOnEmpty', 'plain',
+  'scope', 'group', 'through', 'defaults', 'distinct', 'primary', 'exception', 'type', 'hooks', 'force',
+  'name']);
+
 /**
  * A Model represents a table in the database. Instances of this class represent a database row.
  *
@@ -1763,15 +1771,7 @@ class Model {
       return;
     }
 
-    // This list will quickly become dated, but failing to maintain this list just means
-    // we won't throw a warning when we should. At least most common cases will forever be covered
-    // so we stop throwing erroneous warnings when we shouldn't.
-    const validQueryKeywords = ['where', 'attributes', 'paranoid', 'include', 'order', 'limit', 'offset',
-      'transaction', 'lock', 'raw', 'logging', 'benchmark', 'having', 'searchPath', 'rejectOnEmpty', 'plain',
-      'scope', 'group', 'through', 'defaults', 'distinct', 'primary', 'exception', 'type', 'hooks', 'force',
-      'name'];
-
-    const unrecognizedOptions = _.difference(Object.keys(options), validQueryKeywords);
+    const unrecognizedOptions = Object.keys(options).filter(k => !validQueryKeywords.has(k));
     const unexpectedModelAttributes = _.intersection(unrecognizedOptions, validColumnNames);
     if (!options.where && unexpectedModelAttributes.length > 0) {
       logger.warn(`Model attributes (${unexpectedModelAttributes.join(', ')}) passed into finder method options of model ${this.name}, but the options.where object is empty. Did you forget to use options.where?`);
@@ -2320,13 +2320,13 @@ class Model {
           .filter(name => this.rawAttributes[name])
           .map(name => this.rawAttributes[name].field || name);
 
-        if (defaultFields) {
-          if (!_.intersection(Object.keys(err.fields), whereFields).length && _.intersection(Object.keys(err.fields), defaultFields).length) {
-            throw err;
-          }
+        const errFieldKeys = Object.keys(err.fields);
+        const errFieldsWhereIntersects = Utils.intersects(errFieldKeys, whereFields);
+        if (defaultFields && !errFieldsWhereIntersects && Utils.intersects(errFieldKeys, defaultFields)) {
+          throw err;
         }
 
-        if (_.intersection(Object.keys(err.fields), whereFields).length) {
+        if (errFieldsWhereIntersects) {
           _.each(err.fields, (value, key) => {
             const name = this.fieldRawAttributesMap[key].fieldName;
             if (value.toString() !== options.where[name].toString()) {
@@ -3795,7 +3795,7 @@ class Model {
         args = [this, this.constructor.getTableName(options), values, where, options];
       }
 
-      return this.constructor.QueryInterface[query].apply(this.constructor.QueryInterface, args)
+      return this.constructor.QueryInterface[query](...args)
         .then(([result, rowsUpdated])=> {
           if (versionAttr) {
             // Check to see that a row was updated, otherwise it's an optimistic locking error.
@@ -3978,7 +3978,7 @@ class Model {
     this.set(values, setOptions);
 
     // Now we need to figure out which fields were actually affected by the setter.
-    const sideEffects = _.without.apply(this, [this.changed() || []].concat(changedBefore));
+    const sideEffects = _.without(this.changed(), ...changedBefore);
     const fields = _.union(Object.keys(values), sideEffects);
 
     if (!options.fields) {

lib/sequelize.js

@@ -1115,7 +1115,7 @@ class Sequelize {
         args = [`${args[0]} Elapsed time: ${args[1]}ms`];
       }
 
-      options.logging.apply(null, args);
+      options.logging(...args);
     }
   }
 

lib/utils.js

@@ -7,7 +7,7 @@ const uuidv1 = require('uuid/v1');
 const uuidv4 = require('uuid/v4');
 const Promise = require('./promise');
 const operators  = require('./operators');
-const operatorsArray = _.values(operators);
+const operatorsSet = new Set(_.values(operators));
 
 let inflection = require('inflection');
 
@@ -492,7 +492,7 @@ exports.Where = Where;
  * @private
  */
 function getOperators(obj) {
-  return _.intersection(Object.getOwnPropertySymbols(obj || {}), operatorsArray);
+  return Object.getOwnPropertySymbols(obj).filter(s => operatorsSet.has(s));
 }
 exports.getOperators = getOperators;
 
@@ -528,7 +528,7 @@ exports.getComplexSize = getComplexSize;
  * @private
  */
 function isWhereEmpty(obj) {
-  return _.isEmpty(obj) && getOperators(obj).length === 0;
+  return !!obj && _.isEmpty(obj) && getOperators(obj).length === 0;
 }
 exports.isWhereEmpty = isWhereEmpty;
 
@@ -622,3 +622,14 @@ function nameIndex(index, tableName) {
   return index;
 }
 exports.nameIndex = nameIndex;
+
+/**
+ * Checks if 2 arrays intersect.
+ *
+ * @param {Array} arr1
+ * @param {Array} arr2
+ */
+function intersects(arr1, arr2) {
+  return arr1.some(v => arr2.includes(v));
+}
+exports.intersects = intersects;

test/unit/dialects/mariadb/query-generator.test.js

@@ -788,7 +788,7 @@ if (dialect === 'mariadb') {
             // Options would normally be set by the query interface that instantiates the query-generator, but here we specify it explicitly
             this.queryGenerator.options = Object.assign({}, this.queryGenerator.options, test.context && test.context.options || {});
 
-            const conditions = this.queryGenerator[suiteTitle].apply(this.queryGenerator, test.arguments);
+            const conditions = this.queryGenerator[suiteTitle](...test.arguments);
             expect(conditions).to.deep.equal(test.expectation);
           });
         });

test/unit/dialects/mssql/query-generator.test.js

@@ -295,7 +295,7 @@ if (current.dialect.name === 'mssql') {
         }
       ].forEach(test => {
         it(test.title, function() {
-          expectsql(this.queryGenerator.arithmeticQuery.apply(this.queryGenerator, test.arguments), {
+          expectsql(this.queryGenerator.arithmeticQuery(...test.arguments), {
             mssql: test.expectation
           });
         });

test/unit/dialects/mysql/query-generator.test.js

@@ -738,7 +738,7 @@ if (dialect === 'mysql') {
             // Options would normally be set by the query interface that instantiates the query-generator, but here we specify it explicitly
             this.queryGenerator.options = Object.assign({}, this.queryGenerator.options, test.context && test.context.options || {});
 
-            const conditions = this.queryGenerator[suiteTitle].apply(this.queryGenerator, test.arguments);
+            const conditions = this.queryGenerator[suiteTitle](...test.arguments);
             expect(conditions).to.deep.equal(test.expectation);
           });
         });

test/unit/dialects/postgres/query-generator.test.js

@@ -1231,7 +1231,7 @@ if (dialect.startsWith('postgres')) {
             // Options would normally be set by the query interface that instantiates the query-generator, but here we specify it explicitly
             this.queryGenerator.options = Object.assign({}, this.queryGenerator.options, test.context && test.context.options || {});
 
-            const conditions = this.queryGenerator[suiteTitle].apply(this.queryGenerator, test.arguments);
+            const conditions = this.queryGenerator[suiteTitle](...test.arguments);
             expect(conditions).to.deep.equal(test.expectation);
           });
         });

test/unit/dialects/sqlite/query-generator.test.js

@@ -644,7 +644,7 @@ if (dialect === 'sqlite') {
             // Options would normally be set by the query interface that instantiates the query-generator, but here we specify it explicitly
             this.queryGenerator.options = Object.assign({}, this.queryGenerator.options, test.context && test.context.options || {});
 
-            const conditions = this.queryGenerator[suiteTitle].apply(this.queryGenerator, test.arguments);
+            const conditions = this.queryGenerator[suiteTitle](...test.arguments);
             expect(conditions).to.deep.equal(test.expectation);
           });
         });