diff --git a/.prettierignore b/.prettierignore
index f0aa14a..2d2f359 100644
--- a/.prettierignore
+++ b/.prettierignore
@@ -3,3 +3,4 @@ package-lock.json
 dist
 build
 coverage
+test
diff --git a/.prettierrc b/.prettierrc
index ba4e1a9..b2095be 100644
--- a/.prettierrc
+++ b/.prettierrc
@@ -2,4 +2,3 @@
   "semi": false,
   "singleQuote": true
 }
-
diff --git a/rollup.config.js b/rollup.config.js
index 7232d86..e8076bb 100644
--- a/rollup.config.js
+++ b/rollup.config.js
@@ -1,10 +1,10 @@
-import { dts } from "rollup-plugin-dts";
+import { dts } from 'rollup-plugin-dts'
 
 export default {
   input: 'types/index.d.ts',
   output: {
     file: 'dist/index.d.ts',
-    format: 'es', 
+    format: 'es',
   },
   plugins: [dts()],
 }
diff --git a/src/ConstArray.js b/src/ConstArray.js
index d29d030..89a08da 100644
--- a/src/ConstArray.js
+++ b/src/ConstArray.js
@@ -1,4 +1,12 @@
-import { isHeadless, isSerializableType, parse, serialize, sizeof, sizeofHead, Type } from "."
+import {
+  isHeadless,
+  isSerializableType,
+  parse,
+  serialize,
+  sizeof,
+  sizeofHead,
+  Type,
+} from '.'
 
 export function ConstArray(size) {
   const obj = { _size: size }
@@ -6,22 +14,34 @@ export function ConstArray(size) {
   obj.new(ConstArray, arguments)
   return obj
 }
-ConstArray.prototype.serialize = function(dv, src, ...inner_types) {
+ConstArray.prototype.serialize = function (dv, src, ...inner_types) {
   const item_headless = isHeadless(...inner_types)
   const item_head_size = sizeofHead(src[0], ...inner_types)
   const size = this._size
 
   if (dv.byteLength < this.sizeof(src, ...inner_types)) {
-    throw new Error(this.name_+ ', ' + inner_types.join(', ') + ' too small buffer')
+    throw new Error(
+      this.name_ + ', ' + inner_types.join(', ') + ' too small buffer',
+    )
   }
   if (src.length != size) {
-    throw new Error(this.name_+ ', ' + inner_types.join(', ') + ' should be ' + size + ' elements length')
+    throw new Error(
+      this.name_ +
+        ', ' +
+        inner_types.join(', ') +
+        ' should be ' +
+        size +
+        ' elements length',
+    )
   }
 
   let offset = item_head_size * size
 
   for (let i = 0; i < size; i++) {
-    const item_head_frame = new DataView(dv.buffer, dv.byteOffset + item_head_size * i)
+    const item_head_frame = new DataView(
+      dv.buffer,
+      dv.byteOffset + item_head_size * i,
+    )
     if (item_headless) {
       item_head_frame.setUint32(0, offset)
       const item_frame = new DataView(dv.buffer, dv.byteOffset + offset)
@@ -33,14 +53,17 @@ ConstArray.prototype.serialize = function(dv, src, ...inner_types) {
   }
   return
 }
-ConstArray.prototype.parse = function(dv, ...inner_types) {
+ConstArray.prototype.parse = function (dv, ...inner_types) {
   const item_headless = isHeadless(...inner_types)
   const item_head_size = sizeofHead(...inner_types)
   const size = this._size
   const array = Array(size)
 
   for (let i = 0; i < size; i++) {
-    const item_head_frame = new DataView(dv.buffer, dv.byteOffset + item_head_size * i)
+    const item_head_frame = new DataView(
+      dv.buffer,
+      dv.byteOffset + item_head_size * i,
+    )
     if (item_headless) {
       const offset = item_head_frame.getUint32(0)
       const item_frame = new DataView(dv.buffer, dv.byteOffset + offset)
@@ -52,10 +75,10 @@ ConstArray.prototype.parse = function(dv, ...inner_types) {
 
   return array
 }
-ConstArray.prototype.isHeadless = function(...inner_types) {
+ConstArray.prototype.isHeadless = function (...inner_types) {
   return isHeadless(...inner_types)
 }
-ConstArray.prototype.sizeof = function(arg, ...args) {
+ConstArray.prototype.sizeof = function (arg, ...args) {
   let inner_types
   let src
 
@@ -68,10 +91,12 @@ ConstArray.prototype.sizeof = function(arg, ...args) {
   }
 
   const fixed_size = sizeofHead(...inner_types) * this._size
-  
+
   if (isHeadless(...inner_types)) {
     if (src == undefined) {
-      throw new Error('unknown sizeof ' + this._name + ', ' + inner_types.join(','))
+      throw new Error(
+        'unknown sizeof ' + this._name + ', ' + inner_types.join(','),
+      )
     }
 
     let variable_size = 0
@@ -82,7 +107,7 @@ ConstArray.prototype.sizeof = function(arg, ...args) {
     return fixed_size + variable_size
   } else {
     return fixed_size
-  }  
+  }
 }
 Object.setPrototypeOf(ConstArray.prototype, Type.prototype)
 Object.freeze(ConstArray.prototype)
diff --git a/src/ConstDataView.js b/src/ConstDataView.js
index b8d381e..ef32ce2 100644
--- a/src/ConstDataView.js
+++ b/src/ConstDataView.js
@@ -1,4 +1,4 @@
-import { memcpy, Type } from "."
+import { memcpy, Type } from '.'
 
 export function ConstDataView(size) {
   const obj = { _size: size }
@@ -6,7 +6,7 @@ export function ConstDataView(size) {
   obj.new(ConstDataView, arguments)
   return obj
 }
-ConstDataView.prototype.serialize = function(dv, src) {
+ConstDataView.prototype.serialize = function (dv, src) {
   if (dv.byteLength < this._size) {
     throw new Error(this._name + ' too small buffer')
   }
@@ -16,7 +16,7 @@ ConstDataView.prototype.serialize = function(dv, src) {
   memcpy(dv, src)
   return
 }
-ConstDataView.prototype.parse = function(dv) {
+ConstDataView.prototype.parse = function (dv) {
   const res_buffer = new ArrayBuffer(this._size)
   const res_dv = new DataView(res_buffer)
 
@@ -24,10 +24,10 @@ ConstDataView.prototype.parse = function(dv) {
 
   return res_dv
 }
-ConstDataView.prototype.isHeadless = function() {
+ConstDataView.prototype.isHeadless = function () {
   return false
 }
-ConstDataView.prototype.sizeof = function() {
+ConstDataView.prototype.sizeof = function () {
   return this._size
 }
 Object.setPrototypeOf(ConstDataView.prototype, Type.prototype)
diff --git a/src/ConstString.js b/src/ConstString.js
index 33ae5ce..164cc72 100644
--- a/src/ConstString.js
+++ b/src/ConstString.js
@@ -1,5 +1,5 @@
-import { memcpy } from "./mem"
-import { Type } from "./Type"
+import { memcpy } from './mem'
+import { Type } from './Type'
 
 export function ConstString(size) {
   const obj = { _size: size }
@@ -7,7 +7,7 @@ export function ConstString(size) {
   obj.new(ConstString, arguments)
   return obj
 }
-ConstString.prototype.serialize = function(dv, src) {
+ConstString.prototype.serialize = function (dv, src) {
   const encoder = new TextEncoder('utf-8')
   const encoded = new DataView(encoder.encode(src).buffer, 0, this._size)
 
@@ -21,15 +21,15 @@ ConstString.prototype.serialize = function(dv, src) {
   memcpy(dv, encoded)
   return
 }
-ConstString.prototype.parse = function(dv) {
+ConstString.prototype.parse = function (dv) {
   const frame = new DataView(dv.buffer, dv.byteOffset, this._size)
   const decoder = new TextDecoder('utf-8')
   return decoder.decode(frame)
 }
-ConstString.prototype.isHeadless = function() {
+ConstString.prototype.isHeadless = function () {
   return false
 }
-ConstString.prototype.sizeof = function() {
+ConstString.prototype.sizeof = function () {
   return this._size
 }
 Object.setPrototypeOf(ConstString.prototype, Type.prototype)
diff --git a/src/Int.js b/src/Int.js
index 7d2cf47..83428b5 100644
--- a/src/Int.js
+++ b/src/Int.js
@@ -6,58 +6,58 @@ export function Int(bits, sign) {
   obj.new(Int, arguments)
 
   switch (sign) {
-  case 'signed':
-    switch (bits) {
-    case 8:
-      obj._dv_set = DataView.prototype.setInt8
-      obj._dv_get = DataView.prototype.getInt8
-      obj._limits = limits.i8
+    case 'signed':
+      switch (bits) {
+        case 8:
+          obj._dv_set = DataView.prototype.setInt8
+          obj._dv_get = DataView.prototype.getInt8
+          obj._limits = limits.i8
+          break
+
+        case 16:
+          obj._dv_set = DataView.prototype.setInt16
+          obj._dv_get = DataView.prototype.getInt16
+          obj._limits = limits.i16
+          break
+
+        case 32:
+          obj._dv_set = DataView.prototype.setInt32
+          obj._dv_get = DataView.prototype.getInt32
+          obj._limits = limits.i32
+          break
+
+        default:
+          throw new Error(obj._name + ' incorrect bits ' + bits)
+      }
       break
 
-    case 16:
-      obj._dv_set = DataView.prototype.setInt16
-      obj._dv_get = DataView.prototype.getInt16
-      obj._limits = limits.i16
-      break
+    case 'unsigned':
+      switch (bits) {
+        case 8:
+          obj._dv_set = DataView.prototype.setUint8
+          obj._dv_get = DataView.prototype.getUint8
+          obj._limits = limits.u8
+          break
 
-    case 32:
-      obj._dv_set = DataView.prototype.setInt32
-      obj._dv_get = DataView.prototype.getInt32
-      obj._limits = limits.i32
+        case 16:
+          obj._dv_set = DataView.prototype.setUint16
+          obj._dv_get = DataView.prototype.getUint16
+          obj._limits = limits.u16
+          break
+
+        case 32:
+          obj._dv_set = DataView.prototype.setUint32
+          obj._dv_get = DataView.prototype.getUint32
+          obj._limits = limits.u32
+          break
+
+        default:
+          throw new Error(obj._name + ' incorrect bits ' + bits)
+      }
       break
 
     default:
-      throw new Error(obj._name + ' incorrect bits ' + bits)
-    }
-    break
-
-  case 'unsigned':
-    switch (bits) {
-    case 8:
-      obj._dv_set = DataView.prototype.setUint8
-      obj._dv_get = DataView.prototype.getUint8
-      obj._limits = limits.u8
-      break
-
-    case 16:
-      obj._dv_set = DataView.prototype.setUint16
-      obj._dv_get = DataView.prototype.getUint16
-      obj._limits = limits.u16
-      break
-
-    case 32:
-      obj._dv_set = DataView.prototype.setUint32
-      obj._dv_get = DataView.prototype.getUint32
-      obj._limits = limits.u32
-      break
-
-    default:
-      throw new Error(obj._name + ' incorrect bits ' + bits)
-    }
-    break
-
-  default:
-    throw new Error(obj._name + ' incorrect sign ' + sign)
+      throw new Error(obj._name + ' incorrect sign ' + sign)
   }
 
   return obj
@@ -67,10 +67,14 @@ Int.prototype.serialize = function (dv, src) {
     throw new Error(this._name + ' buffer is too small')
   }
   if (src > this._limits.MAX_VALUE) {
-    throw new Error(this._name + ` should be less or equal than ` + this._limits.MAX_VALUE)
+    throw new Error(
+      this._name + ` should be less or equal than ` + this._limits.MAX_VALUE,
+    )
   }
   if (src < this._limits.MIN_VALUE) {
-    throw new Error(this._name + ` should be more or equal than ` + this._limits.MIN_VALUE)
+    throw new Error(
+      this._name + ` should be more or equal than ` + this._limits.MIN_VALUE,
+    )
   }
   this._dv_set.call(dv, 0, src)
 }
diff --git a/src/Struct.js b/src/Struct.js
index bdf7fe8..fc27a6c 100644
--- a/src/Struct.js
+++ b/src/Struct.js
@@ -1,12 +1,12 @@
-import { isHeadless, parse, serialize, sizeof, sizeofHead, Type } from "."
+import { isHeadless, parse, serialize, sizeof, sizeofHead, Type } from '.'
 
 export function Struct(type_obj) {
   const obj = {}
   Object.setPrototypeOf(obj, Struct.prototype)
-  
-  obj._info_by_key = new Map
+
+  obj._info_by_key = new Map()
   obj._headless = false
-  
+
   const arg = {}
   let offset = 0
 
@@ -18,7 +18,7 @@ export function Struct(type_obj) {
       types = [value]
     }
 
-    arg[key] = types.map(type => type.name)
+    arg[key] = types.map((type) => type.name)
 
     const headless = isHeadless(...types)
     obj._info_by_key.set(key, {
@@ -35,12 +35,12 @@ export function Struct(type_obj) {
 
   return obj
 }
-Struct.prototype.serialize = function(dv, src) {
+Struct.prototype.serialize = function (dv, src) {
   let data_offset = this._size
 
   for (const [key, value] of Object.entries(src)) {
     const info = this._info_by_key.get(key)
-    
+
     if (info.headless) {
       dv.setUint32(info.offset, data_offset)
       const frame = new DataView(dv.buffer, dv.byteOffset + data_offset)
@@ -52,10 +52,10 @@ Struct.prototype.serialize = function(dv, src) {
     }
   }
 }
-Struct.prototype.parse = function(dv) {
+Struct.prototype.parse = function (dv) {
   const res = {}
 
-  for (const [key, info] of this._info_by_key.entries()) {  
+  for (const [key, info] of this._info_by_key.entries()) {
     if (info.headless) {
       const data_offset = dv.getUint32(info.offset)
       const frame = new DataView(dv.buffer, dv.byteOffset + data_offset)
@@ -68,10 +68,10 @@ Struct.prototype.parse = function(dv) {
 
   return res
 }
-Struct.prototype.isHeadless = function() {
+Struct.prototype.isHeadless = function () {
   return this._headless
 }
-Struct.prototype.sizeof = function(arg) {
+Struct.prototype.sizeof = function (arg) {
   if (this._headless) {
     if (arg === undefined) {
       throw new Error('unknown size of ' + this)
diff --git a/src/Type.js b/src/Type.js
index 61330f5..3c08dd3 100644
--- a/src/Type.js
+++ b/src/Type.js
@@ -3,17 +3,17 @@ export function Type() {
   Object.setPrototypeOf(obj, Type.prototype)
   return obj
 }
-Type.prototype.new = function(func, args) {
+Type.prototype.new = function (func, args) {
   this._name = func.name
   if (args !== undefined) {
-    const str_args = Array.from(args).map(arg => JSON.stringify(arg))
+    const str_args = Array.from(args).map((arg) => JSON.stringify(arg))
     this._name += '(' + str_args.join(', ') + ')'
   }
 }
-Type.prototype.toString = function() {
+Type.prototype.toString = function () {
   return this._name
 }
-Type.prototype.serialize = function() {
+Type.prototype.serialize = function () {
   throw new Error('should be overloaded')
 }
 Type.prototype.parse = Type.prototype.serialize
diff --git a/src/index.js b/src/index.js
index b1f76c4..ef67d83 100644
--- a/src/index.js
+++ b/src/index.js
@@ -1,13 +1,22 @@
-import { limits } from "./limits"
-import { memcpy } from "./mem"
-import { Type } from "./Type"
-import { Int } from "./Int"
+import { limits } from './limits'
+import { memcpy } from './mem'
+import { Type } from './Type'
+import { Int } from './Int'
 import { ConstString } from './ConstString'
-import { ConstArray } from "./ConstArray"
+import { ConstArray } from './ConstArray'
 import { ConstDataView } from './ConstDataView'
 import { Struct } from './Struct'
 
-export { limits, memcpy, Type, Int, ConstString, ConstArray, ConstDataView, Struct }
+export {
+  limits,
+  memcpy,
+  Type,
+  Int,
+  ConstString,
+  ConstArray,
+  ConstDataView,
+  Struct,
+}
 
 export function serialize(dv, src, ...types) {
   const [type, ...inner_types] = types
@@ -60,7 +69,10 @@ export function serialize(dv, src, ...types) {
     let offset = 4 + item_head_size * size
 
     for (let i = 0; i < size; i++) {
-      const item_head_frame = new DataView(dv.buffer, dv.byteOffset + 4 + item_head_size * i)
+      const item_head_frame = new DataView(
+        dv.buffer,
+        dv.byteOffset + 4 + item_head_size * i,
+      )
       if (item_headless) {
         item_head_frame.setUint32(0, offset)
         const item_frame = new DataView(dv.buffer, dv.byteOffset + offset)
@@ -114,7 +126,10 @@ export function parse(dv, ...types) {
     const array = Array(size)
 
     for (let i = 0; i < size; i++) {
-      const item_head_frame = new DataView(dv.buffer, dv.byteOffset + 4 + item_head_size * i)
+      const item_head_frame = new DataView(
+        dv.buffer,
+        dv.byteOffset + 4 + item_head_size * i,
+      )
       if (item_headless) {
         const offset = item_head_frame.getUint32(0)
         const item_frame = new DataView(dv.buffer, dv.byteOffset + offset)
@@ -146,12 +161,14 @@ export function isHeadless(...args) {
   if (arg instanceof Type) {
     return arg.isHeadless(...inner_args)
   }
-  return arg == Array ||
+  return (
+    arg == Array ||
     arg == String ||
     arg == DataView ||
     Array.isArray(arg) ||
     typeof arg == 'string' ||
     arg instanceof DataView
+  )
 }
 
 export function sizeofHead(...args) {
@@ -166,10 +183,10 @@ export function sizeof(...args) {
   const [arg, ...inner_args] = args
   const [arg2, ...inner_args2] = inner_args
 
-  if (arg == Boolean || arg2 == Boolean && typeof arg == 'boolean') {
+  if (arg == Boolean || (arg2 == Boolean && typeof arg == 'boolean')) {
     return 1
   }
-  if (arg == Number || arg2 == Number && typeof arg == 'number') {
+  if (arg == Number || (arg2 == Number && typeof arg == 'number')) {
     return 8
   }
   if (arg2 == String && typeof arg == 'string') {
@@ -177,10 +194,8 @@ export function sizeof(...args) {
     return 4 + encoder.encode(arg).byteLength
   }
   if (arg2 == Array && Array.isArray(arg)) {
-    
     const fixed_size = 4 + sizeofHead(...inner_args2) * arg.length
     if (isHeadless(...inner_args2)) {
-
       let variable_size = 0
       for (const item of arg) {
         variable_size += sizeof(item, ...inner_args2)
@@ -204,10 +219,12 @@ export function sizeof(...args) {
 }
 
 export function isSerializableType(type) {
-  return type == Boolean ||
+  return (
+    type == Boolean ||
     type == Number ||
     type == String ||
     type == Array ||
     type == DataView ||
     type instanceof Type
+  )
 }
diff --git a/src/limits.js b/src/limits.js
index dc57027..aa067b3 100644
--- a/src/limits.js
+++ b/src/limits.js
@@ -35,16 +35,16 @@ const bool = {
   MAX_VALUE: 1,
 }
 const f32 = {
-  MIN_VALUE: -3.40282347e+38,
-  MAX_VALUE: 3.40282347e+38,
+  MIN_VALUE: -3.40282347e38,
+  MAX_VALUE: 3.40282347e38,
   MIN_NORMAL_VALUE: 1.17549435e-38,
   MIN_SAFE_INTEGER: -16777215,
   MAX_SAFE_INTEGER: 16777215,
-  EPSILON: 1.19209290e-07,
+  EPSILON: 1.1920929e-7,
 }
 const f64 = {
-  MIN_VALUE: -1.7976931348623157e+308,
-  MAX_VALUE: 1.7976931348623157e+308,
+  MIN_VALUE: -1.7976931348623157e308,
+  MAX_VALUE: 1.7976931348623157e308,
   MIN_NORMAL_VALUE: 2.2250738585072014e-308,
   MIN_SAFE_INTEGER: -9007199254740991,
   MAX_SAFE_INTEGER: 9007199254740991,
diff --git a/src/mem.js b/src/mem.js
index 1f631ae..baea2bf 100644
--- a/src/mem.js
+++ b/src/mem.js
@@ -1,12 +1,12 @@
 export function memcpy(dest, src) {
-  const min_size = dest.byteLength > src.byteLength ?
-    src.byteLength : dest.byteLength
+  const min_size =
+    dest.byteLength > src.byteLength ? src.byteLength : dest.byteLength
 
   for (let i = 0; i < Math.floor(min_size / 8); i++) {
     dest.setFloat64(i * 8, src.getFloat64(i * 8))
   }
 
-  for (let i = min_size - min_size % 8; i < min_size; i++) {
+  for (let i = min_size - (min_size % 8); i < min_size; i++) {
     dest.setInt8(i, src.getInt8(i))
   }
 }
diff --git a/types/ConstArray.d.ts b/types/ConstArray.d.ts
index b624515..5d8fd17 100644
--- a/types/ConstArray.d.ts
+++ b/types/ConstArray.d.ts
@@ -1,8 +1,8 @@
-import { Type } from ".";
+import { Type } from '.'
 
 /**
-  * constructs type of array with constant byte size
-  * @param {number} size number of items
-  * @returns {Type}
-  */
-export function ConstArray(size: number): Type;
+ * constructs type of array with constant byte size
+ * @param {number} size number of items
+ * @returns {Type}
+ */
+export function ConstArray(size: number): Type
diff --git a/types/ConstDataView.d.ts b/types/ConstDataView.d.ts
index 399da99..13b5fa7 100644
--- a/types/ConstDataView.d.ts
+++ b/types/ConstDataView.d.ts
@@ -1,8 +1,8 @@
-import { Type } from ".";
+import { Type } from '.'
 
 /**
-  * constructs type of data view with constant byte size
-  * @param {number} byte_size max byte size
-  * @returns {Type}
-  */
-export function ConstDataView(byte_size: number): Type;
+ * constructs type of data view with constant byte size
+ * @param {number} byte_size max byte size
+ * @returns {Type}
+ */
+export function ConstDataView(byte_size: number): Type
diff --git a/types/ConstString.d.ts b/types/ConstString.d.ts
index 02291af..e377718 100644
--- a/types/ConstString.d.ts
+++ b/types/ConstString.d.ts
@@ -1,8 +1,8 @@
-import { Type } from ".";
+import { Type } from '.'
 
 /**
-  * constructs type of utf8-string with constant byte size
-  * @param {number} byte_size max utf8-encoded byte size
-  * @returns {Type}
-  */
-export function ConstString(byte_size: number): Type;
+ * constructs type of utf8-string with constant byte size
+ * @param {number} byte_size max utf8-encoded byte size
+ * @returns {Type}
+ */
+export function ConstString(byte_size: number): Type
diff --git a/types/Int.d.ts b/types/Int.d.ts
index 8880b3b..66b988e 100644
--- a/types/Int.d.ts
+++ b/types/Int.d.ts
@@ -1,3 +1,3 @@
-import { Type } from ".";
+import { Type } from '.'
 
-export function Int(bits: 8 | 16 | 32, sign: 'signed' | 'unsigned'): Type;
+export function Int(bits: 8 | 16 | 32, sign: 'signed' | 'unsigned'): Type
diff --git a/types/Struct.d.ts b/types/Struct.d.ts
index 977f317..153e1ee 100644
--- a/types/Struct.d.ts
+++ b/types/Struct.d.ts
@@ -1,7 +1,9 @@
-import { SerializableType, Type } from "."
+import { SerializableType, Type } from '.'
 
 /**
-  * constructs type of c-like structure. if field is headless, inside of structure will be stored u32 offset, outside of structure will be stored value of field
-  * @returns {Type}
-  */
-export function Struct(type_obj: Record<string, SerializableType | SerializableType[]>): Type;
+ * constructs type of c-like structure. if field is headless, inside of structure will be stored u32 offset, outside of structure will be stored value of field
+ * @returns {Type}
+ */
+export function Struct(
+  type_obj: Record<string, SerializableType | SerializableType[]>,
+): Type
diff --git a/types/index.d.ts b/types/index.d.ts
index df65d0a..9cfe277 100644
--- a/types/index.d.ts
+++ b/types/index.d.ts
@@ -1,59 +1,78 @@
-import { memcpy } from "./mem";
-import { limits } from "./limits";
-import { Type } from "./Type"
-import { Int } from "./Int"
-import { ConstString } from "./ConstString"
-import { ConstArray } from "./ConstArray";
-import { ConstDataView } from "./ConstDataView"; 
-import { Struct } from "./Struct";
+import { memcpy } from './mem'
+import { limits } from './limits'
+import { Type } from './Type'
+import { Int } from './Int'
+import { ConstString } from './ConstString'
+import { ConstArray } from './ConstArray'
+import { ConstDataView } from './ConstDataView'
+import { Struct } from './Struct'
 
-export { memcpy, limits, Type, Int, ConstString, ConstArray, ConstDataView, Struct }
+export {
+  memcpy,
+  limits,
+  Type,
+  Int,
+  ConstString,
+  ConstArray,
+  ConstDataView,
+  Struct,
+}
 
-export type SerializableType = BooleanConstructor | NumberConstructor | StringConstructor | ArrayConstructor | DataViewConstructor | Type
+export type SerializableType =
+  | BooleanConstructor
+  | NumberConstructor
+  | StringConstructor
+  | ArrayConstructor
+  | DataViewConstructor
+  | Type
 export type Serializable = unknown
 
 /**
-  * @param {DataView} dv destination memory
-  * @param {Serializable} src source object
-  * @param {SerializableType[]} ...types primary and inner types. eg: Array, Number
-  * @throws {Error} if too small buffer
-  * @throws {Error} if array|string|DataView size is higher than limits.u32.MAX_VALUE
-  */
-export function serialize(dv: DataView, src: Serializable, ...types: SerializableType[]): void;
+ * @param {DataView} dv destination memory
+ * @param {Serializable} src source object
+ * @param {SerializableType[]} ...types primary and inner types. eg: Array, Number
+ * @throws {Error} if too small buffer
+ * @throws {Error} if array|string|DataView size is higher than limits.u32.MAX_VALUE
+ */
+export function serialize(
+  dv: DataView,
+  src: Serializable,
+  ...types: SerializableType[]
+): void
 
 /**
-  * @param {DataView} dv source memory
-  * @param {SerializableType[]} ...types primary and inner types. eg: Array, Number
-  * @returns {Serializable} parsed object
-  */
-export function parse(dv: DataView, ...types: SerializableType[]): Serializable;
+ * @param {DataView} dv source memory
+ * @param {SerializableType[]} ...types primary and inner types. eg: Array, Number
+ * @returns {Serializable} parsed object
+ */
+export function parse(dv: DataView, ...types: SerializableType[]): Serializable
 
 /**
-  * some types, like Array, String, has no fixed size. So in Structure they are stored as u32 offset, which points to their beginning
-  * @param {SerializableType[]} ...types primary and inner types. eg: Array, Number
-  * @returns {boolean}
-  */
-export function isHeadless(...types: SerializableType[]): boolean;
+ * some types, like Array, String, has no fixed size. So in Structure they are stored as u32 offset, which points to their beginning
+ * @param {SerializableType[]} ...types primary and inner types. eg: Array, Number
+ * @returns {boolean}
+ */
+export function isHeadless(...types: SerializableType[]): boolean
 
 /**
-  * if obj has no fixed size, return 4 (sizeof u32 offset)
-  * @param {SerializableType[]} ...types primary and inner types. eg: Array, Number
-  * @returns {number}
-  */
-export function sizeofHead(...types: SerializableType[]): number;
+ * if obj has no fixed size, return 4 (sizeof u32 offset)
+ * @param {SerializableType[]} ...types primary and inner types. eg: Array, Number
+ * @returns {number}
+ */
+export function sizeofHead(...types: SerializableType[]): number
 
 /**
-  * @param {Serializable} obj to check
-  * @param {SerializableType[]} ...types primary and inner types. eg: Array, Number
-  * @returns {number}
-  */
-export function sizeof(obj: Serializable, ...types: SerializableType[]): number;
+ * @param {Serializable} obj to check
+ * @param {SerializableType[]} ...types primary and inner types. eg: Array, Number
+ * @returns {number}
+ */
+export function sizeof(obj: Serializable, ...types: SerializableType[]): number
 
 /**
-  * @param {SerializableType[]} ...types primary and inner types. eg: Array, Number
-  * @returns {number}
-  * @throws {Error} if passed Array, String, DataView type (unknown sizeof)
-  */
-export function sizeof(...types: SerializableType[]): number;
+ * @param {SerializableType[]} ...types primary and inner types. eg: Array, Number
+ * @returns {number}
+ * @throws {Error} if passed Array, String, DataView type (unknown sizeof)
+ */
+export function sizeof(...types: SerializableType[]): number
 
-export function isSerializableType(type: unknown): boolean;
+export function isSerializableType(type: unknown): boolean
diff --git a/types/limits.d.ts b/types/limits.d.ts
index 30b9f58..02af743 100644
--- a/types/limits.d.ts
+++ b/types/limits.d.ts
@@ -29,4 +29,4 @@ export const limits: {
   bool: IntLimit
   f32: FloatLimit
   f64: FloatLimit
-};
+}
diff --git a/types/mem.d.ts b/types/mem.d.ts
index c9581f3..d1b5eb5 100644
--- a/types/mem.d.ts
+++ b/types/mem.d.ts
@@ -1,4 +1,4 @@
 /**
-  * copies max possible number of bytes from src to dest (min of both sizes) 
-  */
-export function memcpy(dest: DataView, src: DataView): void;
+ * copies max possible number of bytes from src to dest (min of both sizes)
+ */
+export function memcpy(dest: DataView, src: DataView): void