Fixed WASM support

Author: colemancda

Sources/SwiftFoundation/POSIXTime.swift

@@ -75,7 +75,7 @@ internal extension timespec {
 
         let nanoseconds = decimalValue * billion
 
-        self.init(tv_sec: Int(integerValue), tv_nsec: Int(nanoseconds))
+        self.init(tv_sec: .init(integerValue), tv_nsec: .init(nanoseconds))
     }
 
     var timeInterval: SwiftFoundation.TimeInterval {
@@ -108,14 +108,16 @@ internal extension tm {
 // MARK: - Cross-Platform Support
 
 #if canImport(Darwin)
-    
 internal typealias POSIXMicroseconds = __darwin_suseconds_t
-    
 #else
+
+#if arch(wasm32)
+internal typealias POSIXMicroseconds = Int32
+#else
+internal typealias POSIXMicroseconds = __suseconds_t
+#endif
 
-public typealias POSIXMicroseconds = __suseconds_t
-    
-public func modf(value: Double) -> (Double, Double) {
+internal func modf(value: Double) -> (Double, Double) {
 
     var integerValue: Double = 0
 

Sources/SwiftFoundation/Thread.swift

@@ -12,6 +12,8 @@ import Darwin
 import Glibc
 #endif
 
+#if !arch(wasm32)
+
 /// POSIX Thread
 public final class Thread {
 
@@ -120,3 +122,5 @@ fileprivate extension Thread {
         }
     }
 }
+
+#endif