expose ForEach internals for wasm rendering (#69)

Author: sliemeobn

.github/workflows/ci.yaml

@@ -16,7 +16,7 @@ jobs:
     timeout-minutes: 15
     strategy:
       matrix:
-        image: ["swift:5.10", "swift:6.0"]
+        image: ["swift:5.10", "swift:6.0", "swift:6.1"]
 
     container:
       image: ${{ matrix.image }}

Sources/Elementary/Core/ForEach.swift

@@ -11,38 +11,37 @@
 public struct ForEach<Data, Content>: HTML
     where Data: Sequence, Content: HTML
 {
-    @usableFromInline
-    var sequence: Data
+    public var _data: Data
     // TODO: Swift 6 - @Sendable is not ideal here, but currently the response generators for hummingbird/vapor require sendable HTML types
     // also, currently there is no good way to conditionally apply Sendable conformance based on closure type
-    @usableFromInline
-    var contentBuilder: @Sendable (Data.Element) -> Content
+
+    public var _contentBuilder: @Sendable (Data.Element) -> Content
 
     /// Creates a new `ForEach` element with the given sequence and content builder closure.
     ///
     /// - Parameters:
     ///  - sequence: A sequence of data to render.
     ///  - contentBuilder: A closure that builds the HTML content for each element in the sequence.
-    public init(_ sequence: Data, @HTMLBuilder content contentBuilder: @escaping @Sendable (Data.Element) -> Content) {
-        self.sequence = sequence
-        self.contentBuilder = contentBuilder
+    public init(_ data: Data, @HTMLBuilder content contentBuilder: @escaping @Sendable (Data.Element) -> Content) {
+        _data = data
+        _contentBuilder = contentBuilder
     }
 
     @inlinable @inline(__always)
     public static func _render<Renderer: _HTMLRendering>(_ html: consuming Self, into renderer: inout Renderer, with context: consuming _RenderingContext) {
         context.assertNoAttributes(self)
 
-        for element in html.sequence {
-            Content._render(html.contentBuilder(element), into: &renderer, with: copy context)
+        for element in html._data {
+            Content._render(html._contentBuilder(element), into: &renderer, with: copy context)
         }
     }
 
     @inlinable @inline(__always)
     public static func _render<Renderer: _AsyncHTMLRendering>(_ html: consuming Self, into renderer: inout Renderer, with context: consuming _RenderingContext) async throws {
         context.assertNoAttributes(self)
 
-        for element in html.sequence {
-            try await Content._render(html.contentBuilder(element), into: &renderer, with: copy context)
+        for element in html._data {
+            try await Content._render(html._contentBuilder(element), into: &renderer, with: copy context)
         }
     }
 }