fix: update option directives types

Author: KeJunMao

src/core/directives/if.ts

@@ -1,7 +1,7 @@
 import process from 'node:process'
 import { defineDirective } from '../directive'
 
-function resolveConditional(test: string, env = process.env) {
+export function resolveConditional(test: string, env = process.env) {
   test = test || 'true'
   test = test.trim()
   test = test.replace(/([^=!])=([^=])/g, '$1==$2')

src/types.ts

@@ -56,7 +56,7 @@ export type DirectiveContext = Context
 
 export interface Options {
   cwd: string
-  directives: Directive[] | FunctionDirective[]
+  directives: (Directive | FunctionDirective)[]
   include: FilterPattern
   exclude: FilterPattern
 }