Swift definitions for structures, enumerations and functions defined in MS-PST
Add the following line to your project's SwiftPM dependencies:
.package(url: "https://github.com/hughbe/PstReader", from: "1.0.0"),import PstReader
let data = Data(contentsOfFile: "<path-to-file>.pst")!
let file = try PstFile(data: data)
print(file.rootFolder)