.some

Sources/Path+Codable.swift

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+import Foundation
+
+public extension CodingUserInfoKey {
+    static let relativePath = CodingUserInfoKey(rawValue: "dev.mxcl.Path.relative")!
+}
+
+extension Path: Codable {
+    public init(from decoder: Decoder) throws {
+        let value = try decoder.singleValueContainer().decode(String.self)
+        if value.hasPrefix("/") {
+            string = value
+        } else {
+            guard let root = decoder.userInfo[.relativePath] as? Path else {
+                throw DecodingError.dataCorrupted(.init(codingPath: [], debugDescription: "Path cannot decode a relative path if `userInfo[.relativePath]` not set to a Path object."))
+            }
+            string = (root/value).string
+        }
+    }
+
+    public func encode(to encoder: Encoder) throws {
+        var container = encoder.singleValueContainer()
+        if let root = encoder.userInfo[.relativePath] as? Path {
+            try container.encode(relative(to: root))
+        } else {
+            try container.encode(string)
+        }
+    }
+}