typescript(option): fix: fied broken brand equality

Signed-off-by: prescientmoon <git@moonythm.dev>

typescript/option/src/helpers/get.ts

@@ -1,8 +1,8 @@
-import { some } from '../internals'
 import { Option } from '../types'
+import { isSome } from './isSome'
 
 export const get = <T>(option: Option<T>): T => {
-    if (option.__brand === some) {
+    if (isSome(option)) {
         return option as T
     }
 

typescript/option/src/helpers/isSome.ts

@@ -1,4 +1,4 @@
 import { Option } from '../types'
-import { some } from '../internals'
+import { isNothing } from './isNone'
 
-export const isSome = <T>(option: Option<T>) => option.__brand === some
+export const isSome = <T>(option: Option<T>) => !isNothing(option)

typescript/option/src/helpers/iter.ts

@@ -1,9 +1,9 @@
-import { some } from '../internals'
 import { Mapper } from '../internalTypes'
 import { Option } from '../types'
+import { isSome } from './isSome'
 
 export const iter = <T>(mapper: Mapper<T, void>, option: Option<T>) => {
-    if (option.__brand === some) {
+    if (isSome(option)) {
         mapper(option as T)
     }
 }

typescript/option/src/helpers/match.ts

@@ -1,13 +1,13 @@
 import { Option } from '../types'
 import { Mapper } from '../internalTypes'
-import { some } from '../internals'
+import { isSome } from './isSome'
 
 export const match = <T, U>(
     caseSome: Mapper<T, U>,
     _default: U,
     option: Option<T>
 ) => {
-    if (option.__brand === some) {
+    if (isSome(option)) {
         return caseSome(option as T)
     }
 

typescript/option/src/types.ts

@@ -6,5 +6,5 @@ type Some<T> = Brand<T, typeof some>
 
 export type Option<T> = Some<T> | None
 
-export const None = undefined as None
-export const Some = <T>(value: T): Option<T> => value as Some<T>
+export const None = { __brand: none } as None
+export const Some = <T>(value: T) => value as Option<T>