Fix bug in function print

src/utils.ts

@@ -1,5 +1,5 @@
-import { Struct, Infer, Result, Context, Describe } from './struct'
 import { Failure } from './error'
+import { Context, Describe, Infer, Result, Struct } from './struct'
 
 /**
  * Check if a value is an iterator.
@@ -39,7 +39,11 @@ export function print(value: any): string {
     return value.toString()
   }
 
-  return typeof value === 'string' ? JSON.stringify(value) : `${value}`
+  if (value instanceof Object) {
+    return JSON.stringify(value)
+  }
+
+  return `${value}`
 }
 
 /**
@@ -74,8 +78,7 @@ export function toFailure<T, S>(
   const { type } = struct
   const {
     refinement,
-    message = `Expected a value of type \`${type}\`${
-      refinement ? ` with refinement \`${refinement}\`` : ''
+    message = `Expected a value of type \`${type}\`${refinement ? ` with refinement \`${refinement}\`` : ''
     }, but received: \`${print(value)}\``,
   } = result
 
@@ -248,8 +251,8 @@ export type IsExactMatch<T, U> = (<G>() => G extends T ? 1 : 2) extends <
 
 export type IsRecord<T> = T extends object
   ? string extends keyof T
-    ? T
-    : never
+  ? T
+  : never
   : never
 /**
  * Check if a type is a tuple.
@@ -340,43 +343,43 @@ export type If<B extends Boolean, Then, Else> = B extends true ? Then : Else
 
 export type StructSchema<T> = [T] extends [string | undefined | null]
   ? [T] extends [IsMatch<T, string | undefined | null>]
-    ? null
-    : [T] extends [IsUnion<T>]
-    ? EnumSchema<T>
-    : T
+  ? null
+  : [T] extends [IsUnion<T>]
+  ? EnumSchema<T>
+  : T
   : [T] extends [number | undefined | null]
   ? [T] extends [IsMatch<T, number | undefined | null>]
-    ? null
-    : [T] extends [IsUnion<T>]
-    ? EnumSchema<T>
-    : T
+  ? null
+  : [T] extends [IsUnion<T>]
+  ? EnumSchema<T>
+  : T
   : [T] extends [boolean]
   ? [T] extends [IsExactMatch<T, boolean>]
-    ? null
-    : T
+  ? null
+  : T
   : T extends
-      | bigint
-      | symbol
-      | undefined
-      | null
-      | Function
-      | Date
-      | Error
-      | RegExp
-      | Map<any, any>
-      | WeakMap<any, any>
-      | Set<any>
-      | WeakSet<any>
-      | Promise<any>
+  | bigint
+  | symbol
+  | undefined
+  | null
+  | Function
+  | Date
+  | Error
+  | RegExp
+  | Map<any, any>
+  | WeakMap<any, any>
+  | Set<any>
+  | WeakSet<any>
+  | Promise<any>
   ? null
   : T extends Array<infer E>
   ? T extends IsTuple<T>
-    ? null
-    : Struct<E>
+  ? null
+  : Struct<E>
   : T extends object
   ? T extends IsRecord<T>
-    ? null
-    : { [K in keyof T]: Describe<T[K]> }
+  ? null
+  : { [K in keyof T]: Describe<T[K]> }
   : null
 
 /**
@@ -403,8 +406,8 @@ export type InferStructTuple<
   Length extends number = Tuple['length']
 > = Length extends Length
   ? number extends Length
-    ? Tuple
-    : _InferTuple<Tuple, Length, []>
+  ? Tuple
+  : _InferTuple<Tuple, Length, []>
   : never
 type _InferTuple<
   Tuple extends AnyStruct[],