diff --git a/bun.lockb b/bun.lockb
index 2667477..6a64bd7 100755
Binary files a/bun.lockb and b/bun.lockb differ
diff --git a/package.json b/package.json
index b0247a1..1d6b323 100644
--- a/package.json
+++ b/package.json
@@ -12,7 +12,7 @@
   "author": "",
   "license": "MIT",
   "dependencies": {
-    "@rescript/core": "0.6.0",
-    "rescript": "11.0.0"
+    "@rescript/core": "1.6.1",
+    "rescript": "^12.0.0-alpha.5  "
   }
 }
\ No newline at end of file
diff --git a/src/Assert.res b/src/Assert.res
index 3bb3f7e..ebb2499 100644
--- a/src/Assert.res
+++ b/src/Assert.res
@@ -36,13 +36,13 @@ external assertLess: ('a, 'a, ~msg: string=?) => unit = "assertLess"
 external assertLessOrEqual: ('a, 'a, ~msg: string=?) => unit = "assertLessOrEqual"
 
 @module("https://deno.land/std@0.212.0/assert/mod.ts")
-external assertMatch: (string, Js.Re.t, ~msg: string=?) => unit = "assertMatch"
+external assertMatch: (string, RegExp.t, ~msg: string=?) => unit = "assertMatch"
 
 @module("https://deno.land/std@0.212.0/assert/mod.ts")
 external assertNotEquals: ('a, 'a, ~msg: string=?) => unit = "assertNotEquals"
 
 @module("https://deno.land/std@0.212.0/assert/mod.ts")
-external assertNotMatch: (string, Js.Re.t, ~msg: string=?) => unit = "assertNotMatch"
+external assertNotMatch: (string, RegExp.t, ~msg: string=?) => unit = "assertNotMatch"
 
 @module("https://deno.land/std@0.212.0/assert/mod.ts")
 external assertNotStrictEquals: ('a, 'a, ~msg: string=?) => unit = "assertNotStrictEquals"
diff --git a/src/Deno.res b/src/Deno.res
index 283b071..9b7a63b 100644
--- a/src/Deno.res
+++ b/src/Deno.res
@@ -286,7 +286,7 @@ module ListenTlsOptions = {
     cert?: string,
     certFile?: string,
     keyFile?: string,
-    alpnProtocols?: Belt.Array.t<string>,
+    alpnProtocols?: array<string>,
   }
 }
 
@@ -352,8 +352,8 @@ module ConnectTlsOptions = {
     port: int,
     hostname?: string,
     certFile?: string,
-    caCerts?: Belt.Array.t<string>,
-    alpnProtocols?: Belt.Array.t<string>,
+    caCerts?: array<string>,
+    alpnProtocols?: array<string>,
     certChain?: string,
     privateKey?: string,
   }
@@ -408,14 +408,14 @@ module ResolveDnsOptions = {
 module StartTlsOptions = {
   type t = {
     hostname?: string,
-    caCerts?: Belt.Array.t<string>,
-    alpnProtocols?: Belt.Array.t<string>,
+    caCerts?: array<string>,
+    alpnProtocols?: array<string>,
   }
 }
 
 module CommandOptions = {
   type t<'a> = {
-    args?: Belt.Array.t<string>,
+    args?: array<string>,
     cwd?: string,
     clearEnv?: bool,
     env?: 'a,
diff --git a/src/Globals.res b/src/Globals.res
index 090178f..339793c 100644
--- a/src/Globals.res
+++ b/src/Globals.res
@@ -34,7 +34,7 @@ module Event = {
   @get external _CAPTURING_PHASE: t => int = "CAPTURING_PHASE"
   @get external _NONE: t => int = "NONE"
 
-  @send external composedPath: t => Belt.Array.t<EventTarget.t> = "composedPath"
+  @send external composedPath: t => array<EventTarget.t> = "composedPath"
   @send external preventDefault: t => unit = "preventDefault"
   @send external stopImmediatePropagation: t => unit = "stopImmediatePropagation"
   @send external stopPropagation: t => unit = "stopPropagation"
@@ -204,7 +204,7 @@ module GPUSupportedLimits = {
 
 module GPUDeviceDescriptor = {
   type t
-  @get external requiredFeatures: t => Belt.Array.t<string> = "extensions"
+  @get external requiredFeatures: t => array<string> = "extensions"
   @get external requiredLimits: t => 'a = "requiredLimits"
 }
 
@@ -246,10 +246,8 @@ module GPUAdapter = {
   @get external limits: t => GPUSupportedLimits.t = "limits"
   @get external isFallbackAdapter: t => bool = "isFallbackAdapter"
   @send
-  external requestAdapterInfo: (
-    t,
-    ~unmaskHints: Belt.Array.t<string>=?,
-  ) => Promise.t<GPUAdapterInfo.t> = "requestAdapterInfo"
+  external requestAdapterInfo: (t, ~unmaskHints: array<string>=?) => Promise.t<GPUAdapterInfo.t> =
+    "requestAdapterInfo"
   @send
   external requestDevice: (t, ~descriptor: GPUDeviceDescriptor.t=?) => Promise.t<GPUDevice.t> =
     "requestDevice"
@@ -268,7 +266,7 @@ module Navigator = {
   @get external hardwareConcurrency: t => int = "hardwareConcurrency"
   @get external userAgent: t => string = "userAgent"
   @get external language: t => string = "language"
-  @get external languages: t => Belt.Array.t<string> = "languages"
+  @get external languages: t => array<string> = "languages"
 }
 
 module URLSearchParams = {
@@ -277,11 +275,11 @@ module URLSearchParams = {
   @get external size: t => int = "size"
   @send external append: (t, string, string) => unit = "append"
   @send external delete: (t, string) => unit = "delete"
-  @send external getAll: (t, string) => Belt.Array.t<string> = "getAll"
+  @send external getAll: (t, string) => array<string> = "getAll"
   @send external entries: t => 'a = "entries"
   @send external forEach: (t, (string, string, 'b) => unit, ~thisArg: 'c=?) => unit = "forEach"
   @send external get: (t, string) => string = "get"
-  @send external getAll: (t, string) => Belt.Array.t<string> = "getAll"
+  @send external getAll: (t, string) => array<string> = "getAll"
   @send external has: (t, string) => bool = "has"
   @send external keys: t => 'a = "keys"
   @send external set: (t, string, string) => unit = "set"
@@ -351,7 +349,7 @@ module URLPattern = {
 
   @send external test: (t, URLPatternInput.t, ~baseURL: string=?) => bool = "test"
   @send
-  external exec: (t, URLPatternInput.t, ~baseURL: string=?) => option<Belt.Array.t<string>> = "exec"
+  external exec: (t, URLPatternInput.t, ~baseURL: string=?) => option<array<string>> = "exec"
 }
 
 module ErrorEventInit = {
@@ -469,7 +467,7 @@ module ReadableStream = {
 
   @send external pipeTo: ('a, ~options: PipeOptions.t=?) => Promise.t<unit> = "pipeTo"
 
-  @send external tee: t<'a> => Belt.Array.t<t<'b>> = "tee"
+  @send external tee: t<'a> => array<t<'b>> = "tee"
 
   @send external values: (t<'a>, ~options: 'b=?) => 'c = "values"
 }
@@ -489,7 +487,7 @@ module Headers = {
   @send external get: (t, string) => option<string> = "get"
   @send external has: (t, string) => bool = "has"
   @send external set: (t, string, string) => unit = "set"
-  @send external getSetCookie: t => Belt.Array.t<string> = "getSetCookie"
+  @send external getSetCookie: t => array<string> = "getSetCookie"
 }
 
 module BufferSource = {
@@ -498,8 +496,8 @@ module BufferSource = {
 
 module BlobParts = {
   type t =
-    | BufferSources(Belt.Array.t<BufferSource.t>)
-    | Strings(Belt.Array.t<string>)
+    | BufferSources(array<BufferSource.t>)
+    | Strings(array<string>)
 }
 
 module BlobPropertyBag = {
@@ -590,7 +588,7 @@ module FormData = {
 
   @send external get: (t, string) => option<FormDataEntryValue.t> = "get"
 
-  @send external getAll: (t, string) => Belt.Array.t<FormDataEntryValue.t> = "getAll"
+  @send external getAll: (t, string) => array<FormDataEntryValue.t> = "getAll"
 
   @send external has: (t, string) => bool = "has"
 
@@ -671,22 +669,19 @@ module RequestInit = {
   let _newBlob = (init: t<'a, 'b>, body: Blob.t) => {
     {
       body: Some(body),
-      cache: Belt.Option.getWithDefault(init.cache, ""),
-      credentials: Belt.Option.getWithDefault(init.credentials, ""),
-      destination: Belt.Option.getWithDefault(init.destination, ""),
+      cache: Option.getOr(init.cache, ""),
+      credentials: Option.getOr(init.credentials, ""),
+      destination: Option.getOr(init.destination, ""),
       headers: init.headers,
-      integrity: Belt.Option.getWithDefault(init.integrity, ""),
-      keepalive: Belt.Option.getWithDefault(init.keepalive, true),
-      method: Belt.Option.getWithDefault(init.method, "GET"),
-      mode: Belt.Option.getWithDefault(init.mode, "cors"),
-      redirect: Belt.Option.getWithDefault(init.redirect, "follow"),
-      referer: Belt.Option.getWithDefault(init.referer, ""),
-      refererPolicy: Belt.Option.getWithDefault(init.refererPolicy, ""),
-      signal: Belt.Option.getWithDefault(
-        init.signal,
-        AbortController.signal(AbortController.new()),
-      ),
-      window: Belt.Option.getWithDefault(init.window, Window.window),
+      integrity: Option.getOr(init.integrity, ""),
+      keepalive: Option.getOr(init.keepalive, true),
+      method: Option.getOr(init.method, "GET"),
+      mode: Option.getOr(init.mode, "cors"),
+      redirect: Option.getOr(init.redirect, "follow"),
+      referer: Option.getOr(init.referer, ""),
+      refererPolicy: Option.getOr(init.refererPolicy, ""),
+      signal: Option.getOr(init.signal, AbortController.signal(AbortController.new())),
+      window: Option.getOr(init.window, Window.window),
     }
   }
 
@@ -694,22 +689,19 @@ module RequestInit = {
   let _newBufferSource = (init: t<'a, 'b>, body: BufferSource.t) => {
     {
       body: Some(body),
-      cache: Belt.Option.getWithDefault(init.cache, ""),
-      credentials: Belt.Option.getWithDefault(init.credentials, ""),
-      destination: Belt.Option.getWithDefault(init.destination, ""),
+      cache: Option.getOr(init.cache, ""),
+      credentials: Option.getOr(init.credentials, ""),
+      destination: Option.getOr(init.destination, ""),
       headers: init.headers,
-      integrity: Belt.Option.getWithDefault(init.integrity, ""),
-      keepalive: Belt.Option.getWithDefault(init.keepalive, true),
-      method: Belt.Option.getWithDefault(init.method, "GET"),
-      mode: Belt.Option.getWithDefault(init.mode, "cors"),
-      redirect: Belt.Option.getWithDefault(init.redirect, "follow"),
-      referer: Belt.Option.getWithDefault(init.referer, ""),
-      refererPolicy: Belt.Option.getWithDefault(init.refererPolicy, ""),
-      signal: Belt.Option.getWithDefault(
-        init.signal,
-        AbortController.signal(AbortController.new()),
-      ),
-      window: Belt.Option.getWithDefault(init.window, Window.window),
+      integrity: Option.getOr(init.integrity, ""),
+      keepalive: Option.getOr(init.keepalive, true),
+      method: Option.getOr(init.method, "GET"),
+      mode: Option.getOr(init.mode, "cors"),
+      redirect: Option.getOr(init.redirect, "follow"),
+      referer: Option.getOr(init.referer, ""),
+      refererPolicy: Option.getOr(init.refererPolicy, ""),
+      signal: Option.getOr(init.signal, AbortController.signal(AbortController.new())),
+      window: Option.getOr(init.window, Window.window),
     }
   }
 
@@ -717,22 +709,19 @@ module RequestInit = {
   let _newFormData = (init: t<'a, 'b>, body: FormData.t) => {
     {
       body: Some(body),
-      cache: Belt.Option.getWithDefault(init.cache, ""),
-      credentials: Belt.Option.getWithDefault(init.credentials, ""),
-      destination: Belt.Option.getWithDefault(init.destination, ""),
+      cache: Option.getOr(init.cache, ""),
+      credentials: Option.getOr(init.credentials, ""),
+      destination: Option.getOr(init.destination, ""),
       headers: init.headers,
-      integrity: Belt.Option.getWithDefault(init.integrity, ""),
-      keepalive: Belt.Option.getWithDefault(init.keepalive, true),
-      method: Belt.Option.getWithDefault(init.method, "GET"),
-      mode: Belt.Option.getWithDefault(init.mode, "cors"),
-      redirect: Belt.Option.getWithDefault(init.redirect, "follow"),
-      referer: Belt.Option.getWithDefault(init.referer, ""),
-      refererPolicy: Belt.Option.getWithDefault(init.refererPolicy, ""),
-      signal: Belt.Option.getWithDefault(
-        init.signal,
-        AbortController.signal(AbortController.new()),
-      ),
-      window: Belt.Option.getWithDefault(init.window, Window.window),
+      integrity: Option.getOr(init.integrity, ""),
+      keepalive: Option.getOr(init.keepalive, true),
+      method: Option.getOr(init.method, "GET"),
+      mode: Option.getOr(init.mode, "cors"),
+      redirect: Option.getOr(init.redirect, "follow"),
+      referer: Option.getOr(init.referer, ""),
+      refererPolicy: Option.getOr(init.refererPolicy, ""),
+      signal: Option.getOr(init.signal, AbortController.signal(AbortController.new())),
+      window: Option.getOr(init.window, Window.window),
     }
   }
 
@@ -740,22 +729,19 @@ module RequestInit = {
   let _newURLSearchParams = (init: t<'a, 'b>, body: URLSearchParams.t) => {
     {
       body: Some(body),
-      cache: Belt.Option.getWithDefault(init.cache, ""),
-      credentials: Belt.Option.getWithDefault(init.credentials, ""),
-      destination: Belt.Option.getWithDefault(init.destination, ""),
+      cache: Option.getOr(init.cache, ""),
+      credentials: Option.getOr(init.credentials, ""),
+      destination: Option.getOr(init.destination, ""),
       headers: init.headers,
-      integrity: Belt.Option.getWithDefault(init.integrity, ""),
-      keepalive: Belt.Option.getWithDefault(init.keepalive, true),
-      method: Belt.Option.getWithDefault(init.method, "GET"),
-      mode: Belt.Option.getWithDefault(init.mode, "cors"),
-      redirect: Belt.Option.getWithDefault(init.redirect, "follow"),
-      referer: Belt.Option.getWithDefault(init.referer, ""),
-      refererPolicy: Belt.Option.getWithDefault(init.refererPolicy, ""),
-      signal: Belt.Option.getWithDefault(
-        init.signal,
-        AbortController.signal(AbortController.new()),
-      ),
-      window: Belt.Option.getWithDefault(init.window, Window.window),
+      integrity: Option.getOr(init.integrity, ""),
+      keepalive: Option.getOr(init.keepalive, true),
+      method: Option.getOr(init.method, "GET"),
+      mode: Option.getOr(init.mode, "cors"),
+      redirect: Option.getOr(init.redirect, "follow"),
+      referer: Option.getOr(init.referer, ""),
+      refererPolicy: Option.getOr(init.refererPolicy, ""),
+      signal: Option.getOr(init.signal, AbortController.signal(AbortController.new())),
+      window: Option.getOr(init.window, Window.window),
     }
   }
 
@@ -763,22 +749,19 @@ module RequestInit = {
   let _newReadableStream = (init: t<'a, 'b>, body: ReadableStream.t<Uint8Array.t>) => {
     {
       body: Some(body),
-      cache: Belt.Option.getWithDefault(init.cache, ""),
-      credentials: Belt.Option.getWithDefault(init.credentials, ""),
-      destination: Belt.Option.getWithDefault(init.destination, ""),
+      cache: Option.getOr(init.cache, ""),
+      credentials: Option.getOr(init.credentials, ""),
+      destination: Option.getOr(init.destination, ""),
       headers: init.headers,
-      integrity: Belt.Option.getWithDefault(init.integrity, ""),
-      keepalive: Belt.Option.getWithDefault(init.keepalive, true),
-      method: Belt.Option.getWithDefault(init.method, "GET"),
-      mode: Belt.Option.getWithDefault(init.mode, "cors"),
-      redirect: Belt.Option.getWithDefault(init.redirect, "follow"),
-      referer: Belt.Option.getWithDefault(init.referer, ""),
-      refererPolicy: Belt.Option.getWithDefault(init.refererPolicy, ""),
-      signal: Belt.Option.getWithDefault(
-        init.signal,
-        AbortController.signal(AbortController.new()),
-      ),
-      window: Belt.Option.getWithDefault(init.window, Window.window),
+      integrity: Option.getOr(init.integrity, ""),
+      keepalive: Option.getOr(init.keepalive, true),
+      method: Option.getOr(init.method, "GET"),
+      mode: Option.getOr(init.mode, "cors"),
+      redirect: Option.getOr(init.redirect, "follow"),
+      referer: Option.getOr(init.referer, ""),
+      refererPolicy: Option.getOr(init.refererPolicy, ""),
+      signal: Option.getOr(init.signal, AbortController.signal(AbortController.new())),
+      window: Option.getOr(init.window, Window.window),
     }
   }
 
@@ -786,22 +769,19 @@ module RequestInit = {
   let _newString = (init: t<'a, 'b>, body: string) => {
     {
       body: Some(body),
-      cache: Belt.Option.getWithDefault(init.cache, ""),
-      credentials: Belt.Option.getWithDefault(init.credentials, ""),
-      destination: Belt.Option.getWithDefault(init.destination, ""),
+      cache: Option.getOr(init.cache, ""),
+      credentials: Option.getOr(init.credentials, ""),
+      destination: Option.getOr(init.destination, ""),
       headers: init.headers,
-      integrity: Belt.Option.getWithDefault(init.integrity, ""),
-      keepalive: Belt.Option.getWithDefault(init.keepalive, true),
-      method: Belt.Option.getWithDefault(init.method, "GET"),
-      mode: Belt.Option.getWithDefault(init.mode, "cors"),
-      redirect: Belt.Option.getWithDefault(init.redirect, "follow"),
-      referer: Belt.Option.getWithDefault(init.referer, ""),
-      refererPolicy: Belt.Option.getWithDefault(init.refererPolicy, ""),
-      signal: Belt.Option.getWithDefault(
-        init.signal,
-        AbortController.signal(AbortController.new()),
-      ),
-      window: Belt.Option.getWithDefault(init.window, Window.window),
+      integrity: Option.getOr(init.integrity, ""),
+      keepalive: Option.getOr(init.keepalive, true),
+      method: Option.getOr(init.method, "GET"),
+      mode: Option.getOr(init.mode, "cors"),
+      redirect: Option.getOr(init.redirect, "follow"),
+      referer: Option.getOr(init.referer, ""),
+      refererPolicy: Option.getOr(init.refererPolicy, ""),
+      signal: Option.getOr(init.signal, AbortController.signal(AbortController.new())),
+      window: Option.getOr(init.window, Window.window),
     }
   }
 }