Function copyFileShimData

packages/compiler-cli/src/ngtsc/shims/src/expando.ts:117–122

(from: ts.SourceFile, to: ts.SourceFile)

 * Copy any shim data from one `ts.SourceFile` to another.
 */
export function copyFileShimData(from: ts.SourceFile, to: ts.SourceFile): void {
  if (!isFileShimSourceFile(from)) {
    return;
  }
  sfExtensionData(to).fileShim = sfExtensionData(from).fileShim;
}

/**
 * For those `ts.SourceFile`s in the `program` which have previously been tagged by a