diff --git a/projects/valkyrie-std/source/io/InputStream.vk b/projects/valkyrie-std/source/io/InputStream.vk
new file mode 100644
index 0000000..1b9f065
--- /dev/null
+++ b/projects/valkyrie-std/source/io/InputStream.vk
@@ -0,0 +1,9 @@
+namespace package.io;
+
+
+#ffi("wasi:io/streams", "input-stream")
+resource class InputStream {}
+
+#ffi("wasi:cli/stdout", "get-stderr")
+function standard_input() -> InputStream {}
+
diff --git a/projects/valkyrie-std/source/io/IoError.vk b/projects/valkyrie-std/source/io/IoError.vk
new file mode 100644
index 0000000..0fabceb
--- /dev/null
+++ b/projects/valkyrie-std/source/io/IoError.vk
@@ -0,0 +1,11 @@
+namespace package.io;
+
+#ffi("wasi:io/error", "error")
+resource class IoError {}
+
+extends IoError {
+    #ffi("wasi:io/error", "[method]to-debug-string")
+    private to_debug_string(self) -> String {
+
+    }
+}
diff --git a/projects/valkyrie-std/source/io/OutputStream.vk b/projects/valkyrie-std/source/io/OutputStream.vk
new file mode 100644
index 0000000..bbc9bda
--- /dev/null
+++ b/projects/valkyrie-std/source/io/OutputStream.vk
@@ -0,0 +1,18 @@
+namespace package.io;
+
+
+#ffi("wasi:io/streams", "output-stream")
+resource class OutputStream {}
+
+extends OutputStream {
+    #ffi("wasi:io/streams", "write")
+    function write(data: String) -> void {}
+}
+
+
+#ffi("wasi:cli/stdout", "get-stdout")
+function standard_output() -> OutputStream {}
+
+#ffi("wasi:cli/stdout", "get-stdin")
+function standard_error() -> OutputStream {}
+
diff --git a/projects/valkyrie-std/source/io/_.vk b/projects/valkyrie-std/source/io/_.vk
new file mode 100644
index 0000000..7b88e1c
--- /dev/null
+++ b/projects/valkyrie-std/source/io/_.vk
@@ -0,0 +1,30 @@
+namespace package.io;
+
+#ffi("wasi:io/error", "error")
+resource class IoError {}
+
+extends IoError {
+    #ffi("wasi:io/error", "[method]to-debug-string")
+    private to_debug_string(self) -> String {
+
+    }
+}
+
+#ffi("wasi:io/streams", "input-stream")
+resource class InputStream {}
+
+#ffi("wasi:cli/stdout", "get-stderr")
+function standard_input() -> InputStream {}
+
+
+#ffi("wasi:io/streams", "output-stream")
+resource class OutputStream {}
+
+
+#ffi("wasi:cli/stdout", "get-stdout")
+function standard_output() -> OutputStream {}
+
+
+
+#ffi("wasi:cli/stdout", "get-stdin")
+function standard_error() -> OutputStream {}
diff --git a/projects/valkyrie-std/source/random/generator/LinearCongruential.vk b/projects/valkyrie-std/source/random/generator/LinearCongruential.vk
index 178925b..ab95d4a 100644
--- a/projects/valkyrie-std/source/random/generator/LinearCongruential.vk
+++ b/projects/valkyrie-std/source/random/generator/LinearCongruential.vk
@@ -8,7 +8,7 @@ structure LinearCongruential {
 }
 
 extends LinearCongruential {
-    constructor(seed: u64?, a: u64 = 25214903917, b: u64 = 11, c: u64 = 2^48) {
+    constructor(seed: u64? = null, a: u64 = 25214903917, b: u64 = 11, c: u64 = 2^48) {
         self.seed = seed ?? random_seed_safe();
         self.a = a;
         self.b = b;
diff --git a/projects/valkyrie-std/source/random/seeds.vk b/projects/valkyrie-std/source/random/seeds.vk
index 2242dcd..6ffdd63 100644
--- a/projects/valkyrie-std/source/random/seeds.vk
+++ b/projects/valkyrie-std/source/random/seeds.vk
@@ -1,25 +1,25 @@
 namespace package.random;
 
 🗨 Get a cryptographically secure random number as a random seed
-#ffi("wasi:random", "get-insecure-random-u64")
-micro random_seed_fast() : u64 {
+#ffi("wasi:random/random", "get-random-u64")
+micro random_seed_safe() : u64 {
 
 }
 
-~ Get a cryptographically secure random number as a random seed
-#ffi("wasi:random", "get-random-u64")
-micro random_seed_safe() : u64 {
+🗨 Get a cryptographically secure random number as a random seed
+#ffi("wasi:random/random", "get-insecure-random-u64")
+micro random_seed_fast() : u64 {
 
 }
 
 🗨 Get a cryptographically secure random number as a random seed
-#ffi("wasi:random", "get-random-bytes")
-micro random_bytes_safe(length: u64) : Vector<u8> {
+#ffi("wasi:random/random", "get-random-bytes")
+micro random_bytes_safe(length: u64): Array<u8> {
 
 }
 
 🗨 Get a fast random number seed
-#ffi("wasi:random", "get-insecure-random-bytes")
-micro random_bytes_fast(length: u64) : Vector<u8> {
+#ffi("wasi:random/random", "get-insecure-random-bytes")
+micro random_bytes_fast(length: u64): Array<u8> {
 
 }
\ No newline at end of file
diff --git a/projects/valkyrie-std/source/time/Duration.vk b/projects/valkyrie-std/source/time/Duration.vk
index e061ed5..f197abf 100644
--- a/projects/valkyrie-std/source/time/Duration.vk
+++ b/projects/valkyrie-std/source/time/Duration.vk
@@ -48,49 +48,49 @@ extends Duration {
         new Self { seconds, nanoseconds: 0 }
     }
     second(seconds: f64): Duration {
-        cast_seconds(nanoseconds, 1)
+        cast_seconds(nanoseconds, 1.0)
     }
     millisecond(milliseconds: u64): Duration {
         cast_seconds(nanoseconds, 1_000)
     }
     millisecond(milliseconds: f64): Duration {
-        cast_seconds(nanoseconds, 1_000)
+        cast_seconds(nanoseconds, 1_000.0)
     }
     microsecond(microseconds: u64): Duration {
         cast_seconds(nanoseconds, 1_000_000)
     }
     microsecond(microseconds: f64): Duration {
-        cast_seconds(nanoseconds, 1_000_000)
+        cast_seconds(nanoseconds, 1_000_000.0)
     }
     nanosecond(nanoseconds: u64): Duration {
         cast_seconds(nanoseconds, 1_000_000_000)
     }
     nanosecond(nanoseconds: f64): Duration {
-        cast_seconds(nanoseconds, 1_000_000_000)
+        cast_seconds(nanoseconds, 1_000_000_000.0)
     }
 }
 
-private function cast_seconds(time: u32, rate: u32): Duration {
-    let seconds = time.floor_divide(rate) as u64;
+private micro cast_seconds(time: u32, rate: u32): Duration {
+    let seconds = (time // rate) as u64;
     let nanoseconds = time % rate;
     new Duration { seconds, nanoseconds };
 }
 
-private function cast_seconds(time: u64, rate: u64): Duration {
-    let seconds = time.floor_divide(rate);
-    let nanoseconds = (time % rate) as u32;
+private micro cast_seconds(time: u64, rate: u64): Duration {
+    let seconds = time // rate;
+    let nanoseconds = (time % rate) as 64;
     new Duration { seconds, nanoseconds };
 }
 
-private function cast_seconds(time: f32, rate: f32): Duration {
-    let seconds = time.floor_divide(rate) as u64;
-    let nanoseconds = (nanoseconds % rate).fraction() as u32;
+private micro cast_seconds(time: f32, rate: f32): Duration {
+    let seconds = (time // rate) as u32;
+    let nanoseconds = (nanoseconds % rate).fraction() as u64;
     new Duration { seconds, nanoseconds };
 }
 
-private function cast_seconds(time: f64, rate: f64): Duration {
-    let seconds = time.floor_divide(rate) as u64;
-    let nanoseconds = (nanoseconds % rate).fraction() as u32;
+private micro cast_seconds(time: f64, rate: f64): Duration {
+    let seconds = (time // rate) as u32;
+    let nanoseconds = (nanoseconds % rate).fraction() as u64;
     new Duration { seconds, nanoseconds };
 }
 
diff --git a/projects/valkyrie-std/source/time/time.vk b/projects/valkyrie-std/source/time/time.vk
index d8b46ff..e69de29 100644
--- a/projects/valkyrie-std/source/time/time.vk
+++ b/projects/valkyrie-std/source/time/time.vk
@@ -1,4 +0,0 @@
-#external class Time {
-    _secs: u64,
-    _nanos: u32,
-}
\ No newline at end of file
diff --git a/projects/valkyrie-std/source/time/timezone.vk b/projects/valkyrie-std/source/time/timezone.vk
index 6b38575..e69de29 100644
--- a/projects/valkyrie-std/source/time/timezone.vk
+++ b/projects/valkyrie-std/source/time/timezone.vk
@@ -1,4 +0,0 @@
-#native class Duration {
-    _secs: u64,
-    _nanos: u32,
-}
\ No newline at end of file