diff --git a/src/value/parse/parse.ts b/src/value/parse/parse.ts
index 8fa83e48..4e4b0840 100644
--- a/src/value/parse/parse.ts
+++ b/src/value/parse/parse.ts
@@ -41,50 +41,57 @@ import { Clone } from '../clone/index'
 // ------------------------------------------------------------------
 import { IsArray } from '../guard/index'
 
+// ------------------------------------------------------------------
+// Error
+// ------------------------------------------------------------------
+export class ParseError extends TypeBoxError {
+  constructor(message: string) {
+    super(message)
+  }
+}
+
 // ------------------------------------------------------------------
 // ParseRegistry
 // ------------------------------------------------------------------
 export type TParseOperation = 'Clone' | 'Clean' | 'Default' | 'Convert' | 'Assert' | 'Decode' | ({} & string)
-
-export type TParseCallback = (schema: TSchema, references: TSchema[], value: unknown) => unknown
+export type TParseFunction = (schema: TSchema, references: TSchema[], value: unknown) => unknown
 
 // prettier-ignore
 export namespace ParseRegistry {
-  const map = new Map<string, TParseCallback>([
-    ['Clone',  (_schema: TSchema, _references: TSchema[], value: unknown) => Clone(value)],
-    ['Clean',  (schema: TSchema, references: TSchema[], value: unknown) => Clean(schema, references, value)],
-    ['Default', (schema: TSchema, references: TSchema[], value: unknown) => Default(schema, references, value)],
-    ['Convert', (schema: TSchema, references: TSchema[], value: unknown) => Convert(schema, references, value)],
-    ['Assert', (schema: TSchema, references: TSchema[], value: unknown) => { Assert(schema, references, value); return value }],
-    ['Decode', (schema: TSchema, references: TSchema[], value: unknown) => (HasTransform(schema, references) ? TransformDecode(schema, references, value) : value)],
-    ['Encode', (schema: TSchema, references: TSchema[], value: unknown) => (HasTransform(schema, references) ? TransformEncode(schema, references, value) : value)],
+  const registry = new Map<string, TParseFunction>([
+    ['Clone', (_schema, _references, value: unknown) => Clone(value)],
+    ['Clean', (schema, references, value: unknown) => Clean(schema, references, value)],
+    ['Default', (schema, references, value: unknown) => Default(schema, references, value)],
+    ['Convert', (schema, references, value: unknown) => Convert(schema, references, value)],
+    ['Assert', (schema, references, value: unknown) => { Assert(schema, references, value); return value }],
+    ['Decode', (schema, references, value: unknown) => (HasTransform(schema, references) ? TransformDecode(schema, references, value) : value)],
+    ['Encode', (schema, references, value: unknown) => (HasTransform(schema, references) ? TransformEncode(schema, references, value) : value)],
   ])
   // Deletes an entry from the registry
   export function Delete(key: string): void {
-    map.delete(key)
+    registry.delete(key)
   }
   // Sets an entry in the registry
-  export function Set(key: string, callback: TParseCallback): void {
-    map.set(key, callback)
+  export function Set(key: string, callback: TParseFunction): void {
+    registry.set(key, callback)
   }
   // Gets an entry in the registry
-  export function Get(key: string): TParseCallback | undefined {
-    return map.get(key)
+  export function Get(key: string): TParseFunction | undefined {
+    return registry.get(key)
   }
 }
-
 // ------------------------------------------------------------------
 // ParseDefault: Default Sequence
 // ------------------------------------------------------------------
 // prettier-ignore
-export const ParseDefault: TParseOperation[] = [
-  'Clone', 
-  'Clean', 
-  'Default', 
-  'Convert', 
-  'Assert', 
+export const ParseDefault = [
+  'Clone',
+  'Clean',
+  'Default',
+  'Convert',
+  'Assert',
   'Decode'
-]
+] as const
 
 // ------------------------------------------------------------------
 // ParseValue
@@ -92,14 +99,14 @@ export const ParseDefault: TParseOperation[] = [
 function ParseValue<Type extends TSchema, Result extends StaticDecode<Type> = StaticDecode<Type>>(keys: TParseOperation[], type: Type, references: TSchema[], value: unknown): Result {
   return keys.reduce((value, key) => {
     const reducer = ParseRegistry.Get(key)
-    if (reducer === undefined) throw new TypeBoxError(`Parse: Unable to resolve reduce key '${key}'`)
+    if (reducer === undefined) throw new TypeBoxError(`Parse: Unable to find parse operation '${key}'`)
     return reducer(type, references, value)
   }, value) as Result
 }
+
 // ------------------------------------------------------------------
 // Parse
 // ------------------------------------------------------------------
-
 /** Parses a value using the default parse pipeline. Will throws an `AssertError` if invalid. */
 export function Parse<Type extends TSchema, Output = StaticDecode<Type>, Result extends Output = Output>(schema: Type, references: TSchema[], value: unknown): Result
 /** Parses a value using the default parse pipeline. Will throws an `AssertError` if invalid. */
@@ -115,7 +122,7 @@ export function Parse(...args: any[]): unknown {
     args.length === 4 ? [args[0], args[1], args[2], args[3]] :
     args.length === 3 ? IsArray(args[0]) ? [args[0], args[1], [], args[2]] : [ParseDefault, args[0], args[1], args[2]] :
     args.length === 2 ? [ParseDefault, args[0], [], args[1]] :
-    (() => { throw new TypeBoxError('Parse: Invalid Arguments') }) ()
+    (() => { throw new TypeBoxError('Parse: Invalid Arguments') })()
   )
   return ParseValue(reducers, schema, references, value)
 }