Don't log files that dont load throw error instead

remove swift-log dependency

Package.swift

@@ -8,13 +8,9 @@ let package = Package(
     products: [
         .library(name: "HummingbirdMustache", targets: ["HummingbirdMustache"]),
     ],
-    dependencies: [
-        .package(url: "https://github.com/apple/swift-log.git", from: "1.4.0"),
-    ],
+    dependencies: [],
     targets: [
-        .target(name: "HummingbirdMustache", dependencies: [
-            .product(name: "Logging", package: "swift-log"),
-        ]),
+        .target(name: "HummingbirdMustache", dependencies: []),
         .testTarget(name: "HummingbirdMustacheTests", dependencies: ["HummingbirdMustache"]),
     ]
 )

Sources/HummingbirdMustache/Library+FileSystem.swift

@@ -3,7 +3,7 @@ import Logging
 
 extension HBMustacheLibrary {
     /// Load templates from a folder
-    func loadTemplates(from directory: String, withExtension extension: String = "mustache", logger: Logger?) {
+    func loadTemplates(from directory: String, withExtension extension: String = "mustache") throws {
         var directory = directory
         if !directory.hasSuffix("/") {
             directory += "/"
@@ -15,11 +15,12 @@ extension HBMustacheLibrary {
             guard path.hasSuffix(extWithDot) else { continue }
             guard let data = fs.contents(atPath: directory + path) else { continue }
             let string = String(decoding: data, as: Unicode.UTF8.self)
-            guard let template = try? HBMustacheTemplate(string: string) else {
-                logger?.error("Failed to load \(path)")
-                continue
+            let template: HBMustacheTemplate
+            do {
+                template = try HBMustacheTemplate(string: string)
+            } catch {
+                throw Error.failedToLoad(path, error)
             }
-            logger?.debug("Loading \(path)")
             // drop ".mustache" from path to get name
             let name = String(path.dropLast(extWithDot.count))
             register(template, named: name)

Sources/HummingbirdMustache/Library.swift

@@ -18,9 +18,9 @@ public final class HBMustacheLibrary {
     /// the folder is recursive and templates in subfolders will be registered with the name `subfolder/template`.
     /// - Parameter directory: Directory to look for mustache templates
     /// - Parameter extension: Extension of files to look for
-    public init(directory: String, withExtension extension: String = "mustache", logger: Logger? = nil) {
+    public init(directory: String, withExtension extension: String = "mustache") throws {
         templates = [:]
-        loadTemplates(from: directory, withExtension: `extension`, logger: logger)
+        try loadTemplates(from: directory, withExtension: `extension`)
     }
 
     /// Register template under name
@@ -49,5 +49,9 @@ public final class HBMustacheLibrary {
         return template.render(object)
     }
 
+    public enum Error: Swift.Error {
+        case failedToLoad(String, Swift.Error)
+    }
+
     private var templates: [String: HBMustacheTemplate]
 }

Tests/HummingbirdMustacheTests/LibraryTests.swift

@@ -11,7 +11,7 @@ final class LibraryTests: XCTestCase {
         try data.write(to: URL(fileURLWithPath: "templates/test.mustache"))
         defer { XCTAssertNoThrow(try fs.removeItem(atPath: "templates/test.mustache")) }
 
-        let library = HBMustacheLibrary(directory: "./templates")
+        let library = try HBMustacheLibrary(directory: "./templates")
         let object = ["value": ["value1", "value2"]]
         XCTAssertEqual(library.render(object, withTemplate: "test"), "<test><value>value1</value><value>value2</value></test>")
     }