refactor: Use tabs for indent

Tests/StencilTests/StencilSpec.swift

@@ -3,68 +3,68 @@ import Stencil
 import XCTest
 
 final class StencilTests: XCTestCase {
-  private lazy var environment: Environment = {
-    let exampleExtension = Extension()
-    exampleExtension.registerSimpleTag("simpletag") { _ in
-      "Hello World"
-    }
-    exampleExtension.registerTag("customtag") { _, token in
-      CustomNode(token: token)
-    }
-    return Environment(extensions: [exampleExtension])
-  }()
+	private lazy var environment: Environment = {
+		let exampleExtension = Extension()
+		exampleExtension.registerSimpleTag("simpletag") { _ in
+			"Hello World"
+		}
+		exampleExtension.registerTag("customtag") { _, token in
+			CustomNode(token: token)
+		}
+		return Environment(extensions: [exampleExtension])
+	}()
 
-  func testStencil() {
-    it("can render the README example") {
-      let templateString = """
-        There are {{ articles.count }} articles.
+	func testStencil() {
+		it("can render the README example") {
+			let templateString = """
+				There are {{ articles.count }} articles.
 
-        {% for article in articles %}\
-          - {{ article.title }} by {{ article.author }}.
-        {% endfor %}
-        """
+				{% for article in articles %}\
+					- {{ article.title }} by {{ article.author }}.
+				{% endfor %}
+				"""
 
-      let context = [
-        "articles": [
-          Article(title: "Migrating from OCUnit to XCTest", author: "Kyle Fuller"),
-          Article(title: "Memory Management with ARC", author: "Kyle Fuller")
-        ]
-      ]
+			let context = [
+				"articles": [
+					Article(title: "Migrating from OCUnit to XCTest", author: "Kyle Fuller"),
+					Article(title: "Memory Management with ARC", author: "Kyle Fuller")
+				]
+			]
 
-      let template = Template(templateString: templateString)
-      let result = try template.render(context)
+			let template = Template(templateString: templateString)
+			let result = try template.render(context)
 
-      try expect(result) == """
-        There are 2 articles.
+			try expect(result) == """
+				There are 2 articles.
 
-          - Migrating from OCUnit to XCTest by Kyle Fuller.
-          - Memory Management with ARC by Kyle Fuller.
+					- Migrating from OCUnit to XCTest by Kyle Fuller.
+					- Memory Management with ARC by Kyle Fuller.
 
-        """
-    }
+				"""
+		}
 
-    it("can render a custom template tag") {
-      let result = try self.environment.renderTemplate(string: "{% customtag %}")
-      try expect(result) == "Hello World"
-    }
+		it("can render a custom template tag") {
+			let result = try self.environment.renderTemplate(string: "{% customtag %}")
+			try expect(result) == "Hello World"
+		}
 
-    it("can render a simple custom tag") {
-      let result = try self.environment.renderTemplate(string: "{% simpletag %}")
-      try expect(result) == "Hello World"
-    }
-  }
+		it("can render a simple custom tag") {
+			let result = try self.environment.renderTemplate(string: "{% simpletag %}")
+			try expect(result) == "Hello World"
+		}
+	}
 }
 
 // MARK: - Helpers
 
 private struct CustomNode: NodeType {
-  let token: Token?
-  func render(_ context: Context) throws -> String {
-    "Hello World"
-  }
+	let token: Token?
+	func render(_ context: Context) throws -> String {
+		"Hello World"
+	}
 }
 
 private struct Article {
-  let title: String
-  let author: String
+	let title: String
+	let author: String
 }