chore: convert more files to TypeScript (#18820)

lib/common/clipboard-utils.ts

@@ -0,0 +1,39 @@
+const { nativeImage, NativeImage } = process.electronBinding('native_image')
+
+const objectMap = function (source: Object, mapper: (value: any) => any) {
+  const sourceEntries = Object.entries(source)
+  const targetEntries = sourceEntries.map(([key, val]) => [key, mapper(val)])
+  return Object.fromEntries(targetEntries)
+}
+
+export function serialize (value: any): any {
+  if (value instanceof NativeImage) {
+    return {
+      buffer: value.toBitmap(),
+      size: value.getSize(),
+      __ELECTRON_SERIALIZED_NativeImage__: true
+    }
+  } else if (Array.isArray(value)) {
+    return value.map(serialize)
+  } else if (value instanceof Buffer) {
+    return value
+  } else if (value instanceof Object) {
+    return objectMap(value, serialize)
+  } else {
+    return value
+  }
+}
+
+export function deserialize (value: any): any {
+  if (value && value.__ELECTRON_SERIALIZED_NativeImage__) {
+    return nativeImage.createFromBitmap(value.buffer, value.size)
+  } else if (Array.isArray(value)) {
+    return value.map(deserialize)
+  } else if (value instanceof Buffer) {
+    return value
+  } else if (value instanceof Object) {
+    return objectMap(value, deserialize)
+  } else {
+    return value
+  }
+}