fix(pydeck-carto): Use local isPureObject (#8880)

modules/carto/src/api/request-with-parameters.ts

@@ -1,4 +1,4 @@
-import {isPureObject} from '@loaders.gl/core';
+import {isPureObject} from '../utils';
 import {CartoAPIError} from './carto-api-error';
 import {DEFAULT_HEADERS, DEFAULT_PARAMETERS, MAX_GET_LENGTH} from './common';
 import type {APIErrorContext} from './types';

modules/carto/src/utils.ts

@@ -59,3 +59,8 @@ export function scaleIdentity() {
 
   return scale;
 }
+
+export const isObject: (x: unknown) => boolean = x => x !== null && typeof x === 'object';
+
+export const isPureObject: (x: any) => boolean = x =>
+  isObject(x) && x.constructor === {}.constructor;

test/modules/carto/utils.spec.ts

@@ -1,5 +1,11 @@
 import test from 'tape-promise/tape';
-import {createBinaryProxy, getWorkerUrl, scaleIdentity} from '@deck.gl/carto/utils';
+import {
+  createBinaryProxy,
+  getWorkerUrl,
+  scaleIdentity,
+  isObject,
+  isPureObject
+} from '@deck.gl/carto/utils';
 
 test('createBinaryProxy', async t => {
   const binary = {
@@ -54,3 +60,21 @@ test('scaleIdentity', async t => {
 
   t.end();
 });
+
+test('isObject', t => {
+  class TestClass {}
+  t.equal(isObject({}), true, 'object is object');
+  t.equal(isObject(3), false, 'number is not object');
+  t.equal(isObject([]), true, 'array is object');
+  t.equal(isObject(new TestClass()), true, 'class instance is object');
+  t.end();
+});
+
+test('isPureObject', t => {
+  class TestClass {}
+  t.equal(isPureObject({}), true, 'object is pure');
+  t.equal(isPureObject(3), false, 'number is not pure');
+  t.equal(isPureObject([]), false, 'array is not pure');
+  t.equal(isPureObject(new TestClass()), false, 'class instance is not pure');
+  t.end();
+});