WIP: Improve primitive and reference types utilities

CHANGELOG.md

@@ -8,6 +8,9 @@ and this project adheres to
 
 ## [Unreleased][unreleased]
 
+- Add primitive type: bigint for isScalar
+- Implement isReference
+
 ## [2.2.0][] - 2020-07-10
 
 ### Added

README.md

@@ -53,6 +53,7 @@ $ npm install @metarhia/common
 - [id](#idx)
 - [asyncId](#asyncidx-callback)
 - [isScalar](#isscalarvalue)
+- [isReference](#isreferencevalue)
 - [copy](#copyds)
 - [clone](#cloneobj)
 - [duplicate](#duplicateobj)
@@ -576,6 +577,14 @@ _Returns:_ [`<boolean>`][boolean]
 
 Check if value is scalar
 
+### isReference(value)
+
+- `value`: `<any>`
+
+_Returns:_ [`<boolean>`][boolean]
+
+Check if value is reference
+
 ### copy(ds)
 
 - `ds`: [`<Object[]>`][object] source dataset to be copied

lib/data.js

@@ -1,12 +1,18 @@
 'use strict';
 
-const SCALAR_TYPES = ['boolean', 'number', 'string', 'undefined'];
+const SCALAR_TYPES = ['boolean', 'number', 'string', 'undefined', 'bigint'];
+const REF_TYPES = ['object', 'function'];
 
 // Check if value is scalar
 //   value - <any>
 // Returns: <boolean>
 const isScalar = value => SCALAR_TYPES.includes(typeof value);
 
+// Check if value is reference
+//   value - <any>
+// Returns: <boolean>
+const isReference = value => value !== null && REF_TYPES.includes(typeof value);
+
 // Copy dataset (copy objects to new array)
 //   ds - <Object[]>, source dataset to be copied
 // Returns: <Object[]>
@@ -175,6 +181,7 @@ const mergeObjects = (merger, ...objs) => {
 
 module.exports = {
   isScalar,
+  isReference,
   copy,
   clone,
   duplicate,

test/data.js

@@ -11,6 +11,10 @@ metatests.case(
   {
     'common.isScalar': [
       [0, true],
+      [1, true],
+      [1.5, true],
+      [1n, true],
+      [-1n, true],
       ['value1', true],
       [50, true],
       [true, true],
@@ -23,6 +27,14 @@ metatests.case(
       [{}, false],
       ['', true],
     ],
+    'common.isReference': [
+      [{}, true],
+      [[], true],
+      [() => {}, true],
+      [1n, false],
+      [null, false],
+      [undefined, false],
+    ],
     'common.copy': [
       [
         [1, 2, 3],