Improved general helpers and added their funcs to flume index (sc2079)

src/index.ts

@@ -1,3 +1,4 @@
 export * from './lib/theme'
 export * from './lib/components'
 export * from './lib/hooks'
+export * from './lib/helpers'

src/lib/helpers/general.ts

@@ -1,7 +1,9 @@
 export const isNullOrUndefined = (value: any) => {
-  return value === undefined || value === null
+  return value === undefined || value === null || typeof value === 'undefined'
 }
 
 export const isEmpty = (value: any) => {
-  return value === undefined || value === null || value.trim().length === 0
+  return isNullOrUndefined(value) || value.trim().length === 0
 }
+
+export default { isNullOrUndefined, isEmpty }

src/lib/helpers/index.ts

@@ -0,0 +1 @@
+export * from './general'