feat(core): add validateBasis to core export (#706)

Author: CaerusKaru

src/lib/utils/basis-validator.spec.ts renamed to src/lib/core/basis-validator/basis-validator.spec.ts

@@ -20,3 +20,4 @@ export * from './observable-media/index';
 
 export * from './responsive-activation/responsive-activation';
 export * from './style-utils/style-utils';
+export * from './basis-validator/basis-validator';

src/lib/utils/basis-validator.ts renamed to src/lib/core/basis-validator/basis-validator.ts

@@ -23,12 +23,12 @@ import {
   MediaChange,
   MediaMonitor,
   StyleUtils,
+  validateBasis,
 } from '@angular/flex-layout/core';
 import {Subscription} from 'rxjs';
 
 import {extendObject} from '../../utils/object-extend';
 import {Layout, LayoutDirective} from '../layout/layout';
-import {validateBasis} from '../../utils/basis-validator';
 import {isFlowHorizontal} from '../../utils/layout-validator';
 
 

src/lib/core/public-api.ts

@@ -7,6 +7,5 @@
  */
 
 export * from './auto-prefixer';
-export * from './basis-validator';
 export * from './layout-validator';
 export * from './object-extend';