From 3cb2984d4d793a0db7e906ffa41f420afb520b66 Mon Sep 17 00:00:00 2001
From: Yuta Koshizawa <koher@koherent.org>
Date: Tue, 3 Apr 2018 02:27:09 +0900
Subject: [PATCH] Support Swift 4.1

---
 .../xcshareddata/IDEWorkspaceChecks.plist            |  8 ++++++++
 Sources/PromiseK/Throws.swift                        | 12 ++++++++++--
 2 files changed, 18 insertions(+), 2 deletions(-)
 create mode 100644 PromiseK.xcodeproj/project.xcworkspace/xcshareddata/IDEWorkspaceChecks.plist

diff --git a/PromiseK.xcodeproj/project.xcworkspace/xcshareddata/IDEWorkspaceChecks.plist b/PromiseK.xcodeproj/project.xcworkspace/xcshareddata/IDEWorkspaceChecks.plist
new file mode 100644
index 0000000..18d9810
--- /dev/null
+++ b/PromiseK.xcodeproj/project.xcworkspace/xcshareddata/IDEWorkspaceChecks.plist
@@ -0,0 +1,8 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+<dict>
+	<key>IDEDidComputeMac32BitWarning</key>
+	<true/>
+</dict>
+</plist>
diff --git a/Sources/PromiseK/Throws.swift b/Sources/PromiseK/Throws.swift
index f8ed715..6d8de7c 100644
--- a/Sources/PromiseK/Throws.swift
+++ b/Sources/PromiseK/Throws.swift
@@ -10,8 +10,16 @@ extension Promise {
         }
     }
     
+    private func _flatMap<T>(_ transform: @escaping (Value) -> Promise<T>) -> Promise<T> {
+        return flatMap(transform)
+    }
+    
+    public func flatMap<T>(_ transform: @escaping (Value) -> Promise<() throws -> T>) -> Promise<() throws -> T> {
+        return _flatMap(transform)
+    }
+    
     public func flatMap<T>(_ transform: @escaping (Value) throws -> Promise<T>) -> Promise<() throws -> T> {
-        return flatMap { value in
+        return _flatMap { value in
             do {
                 return try transform(value).map { value in { value } }
             } catch let error {
@@ -21,7 +29,7 @@ extension Promise {
     }
     
     public func flatMap<T>(_ transform: @escaping (Value) throws -> Promise<() throws -> T>) -> Promise<() throws -> T> {
-        return flatMap { value in
+        return _flatMap { value in
             do {
                 return try transform(value)
             } catch let error {