prewarm URLs in onPressIn

modules/url-prewarm/expo-module.config.json

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+{
+  "platforms": ["ios"],
+  "ios": {
+    "modules": ["UrlPrewarmModule"]
+  }
+}

modules/url-prewarm/index.ts

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+export * from './src/UrlPrewarmModule'

modules/url-prewarm/ios/UrlPrewarm.podspec

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+Pod::Spec.new do |s|
+  s.name           = 'UrlPrewarm'
+  s.version        = '1.0.0'
+  s.summary        = 'A sample project summary'
+  s.description    = 'A sample project description'
+  s.author         = ''
+  s.homepage       = 'https://docs.expo.dev/modules/'
+  s.platforms      = {
+    :ios => '15.1',
+    :tvos => '15.1'
+  }
+  s.source         = { git: '' }
+  s.static_framework = true
+
+  s.dependency 'ExpoModulesCore'
+
+  # Swift/Objective-C compatibility
+  s.pod_target_xcconfig = {
+    'DEFINES_MODULE' => 'YES',
+  }
+
+  s.frameworks = 'SafariServices'
+
+  s.source_files = "**/*.{h,m,mm,swift,hpp,cpp}"
+end

modules/url-prewarm/ios/UrlPrewarmModule.swift

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+import ExpoModulesCore
+import SafariServices
+
+public class UrlPrewarmModule: Module {
+  public func definition() -> ModuleDefinition {
+    Name("UrlPrewarm")
+
+    AsyncFunction("prewarmUrlsAsync") { (urls: [String]) in
+      let validUrls = urls.compactMap { URL(string: $0) }
+      SFSafariViewController.prewarmConnections(to: validUrls)
+    }
+  }
+}

modules/url-prewarm/src/UrlPrewarmModule.ios.ts

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+import {requireNativeModule} from 'expo'
+
+const NativeModule = requireNativeModule('UrlPrewarm')
+
+export function prewarmUrlsAsync(urls: string[]): Promise<void> {
+  return NativeModule.prewarmUrlsAsync(urls)
+}

modules/url-prewarm/src/UrlPrewarmModule.ts

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+export function prewarmUrlsAsync(_urls: string[]): Promise<void> {
+  throw new Error(
+    '[Not available] prewarmUrlsAsync is not available on this platform',
+  )
+}