⚡ Bolt: Optimize JSON decoding performance

Sources/FigmaAPI/Endpoint/BaseEndpoint.swift

@@ -36,7 +36,6 @@ extension BaseEndpoint {
 extension JSONDecoder {
     static let `default`: JSONDecoder = {
         let decoder = JSONDecoder()
-        decoder.keyDecodingStrategy = .convertFromSnakeCase
         return decoder
     }()
 }

Sources/FigmaAPI/Endpoint/ComponentsEndpoint.swift

@@ -41,6 +41,14 @@ public struct Component: Codable, Sendable {
     public let name: String
     public let description: String?
     public let containingFrame: ContainingFrame
+
+    enum CodingKeys: String, CodingKey {
+        case key
+        case nodeId = "node_id"
+        case name
+        case description
+        case containingFrame = "containing_frame"
+    }
 }
 
 // MARK: - ContainingFrame
@@ -49,4 +57,10 @@ public struct ContainingFrame: Codable, Sendable {
     public let nodeID: String?
     public let name: String?
     public let pageName: String
+
+    enum CodingKeys: String, CodingKey {
+        case nodeID = "node_id"
+        case name
+        case pageName = "page_name"
+    }
 }

Sources/FigmaAPI/Model/Node.swift

@@ -31,6 +31,17 @@ public struct TypeStyle: Decodable, Sendable {
     public var letterSpacing: Double
     public var lineHeightUnit: LineHeightUnit
     public var textCase: TextCase?
+
+    enum CodingKeys: String, CodingKey {
+        case fontFamily = "font_family"
+        case fontPostScriptName = "font_post_script_name"
+        case fontWeight = "font_weight"
+        case fontSize = "font_size"
+        case lineHeightPx = "line_height_px"
+        case letterSpacing = "letter_spacing"
+        case lineHeightUnit = "line_height_unit"
+        case textCase = "text_case"
+    }
 }
 
 public enum TextCase: String, Decodable, Sendable {
@@ -59,6 +70,25 @@ public struct Document: Decodable, Sendable {
     public let rotation: Double?
     public let children: [Document]?
     public let style: TypeStyle?
+
+    enum CodingKeys: String, CodingKey {
+        case id
+        case name
+        case type
+        case fills
+        case strokes
+        case strokeWeight = "stroke_weight"
+        case strokeAlign = "stroke_align"
+        case strokeJoin = "stroke_join"
+        case strokeCap = "stroke_cap"
+        case effects
+        case opacity
+        case blendMode = "blend_mode"
+        case clipsContent = "clips_content"
+        case rotation
+        case children
+        case style
+    }
 }
 
 // MARK: - Stroke Enums
@@ -93,6 +123,16 @@ public struct Effect: Decodable, Sendable {
     public let offset: Vector?
     public let spread: Double?
     public let blendMode: BlendMode?
+
+    enum CodingKeys: String, CodingKey {
+        case type
+        case visible
+        case radius
+        case color
+        case offset
+        case spread
+        case blendMode = "blend_mode"
+    }
 }
 
 public enum EffectType: String, Decodable, Sendable {
@@ -141,6 +181,14 @@ public struct Paint: Decodable, Sendable {
     public let color: PaintColor?
     public let gradientStops: [GradientStop]?
 
+    enum CodingKeys: String, CodingKey {
+        case type
+        case blendMode = "blend_mode"
+        case opacity
+        case color
+        case gradientStops = "gradient_stops"
+    }
+
     public var asSolid: SolidPaint? {
         SolidPaint(self)
     }

Sources/FigmaAPI/Model/Style.swift

@@ -11,6 +11,13 @@ public struct Style: Decodable, Sendable {
     public let name: String
     public let description: String
 
+    enum CodingKeys: String, CodingKey {
+        case styleType = "style_type"
+        case nodeId = "node_id"
+        case name
+        case description
+    }
+
     public init(styleType: StyleType, nodeId: String, name: String, description: String) {
         self.styleType = styleType
         self.nodeId = nodeId

Sources/FigmaAPI/Model/Variables.swift

@@ -1,6 +1,11 @@
 public struct Mode: Codable, Sendable {
     public var modeId: String
     public var name: String
+
+    enum CodingKeys: String, CodingKey {
+        case modeId = "mode_id"
+        case name
+    }
 }
 
 public struct VariableCollectionValue: Codable, Sendable {
@@ -9,6 +14,14 @@ public struct VariableCollectionValue: Codable, Sendable {
     public var name: String
     public var modes: [Mode]
     public var variableIds: [String]
+
+    enum CodingKeys: String, CodingKey {
+        case defaultModeId = "default_mode_id"
+        case id
+        case name
+        case modes
+        case variableIds = "variable_ids"
+    }
 }
 
 public struct VariableAlias: Codable, Sendable {
@@ -65,6 +78,14 @@ public struct VariableValue: Codable, Sendable {
     public var variableCollectionId: String
     public var valuesByMode: [String: ValuesByMode]
     public var description: String
+
+    enum CodingKeys: String, CodingKey {
+        case id
+        case name
+        case variableCollectionId = "variable_collection_id"
+        case valuesByMode = "values_by_mode"
+        case description
+    }
 }
 
 public typealias VariableId = String
@@ -73,6 +94,11 @@ public typealias VariableCollectionId = String
 public struct VariablesMeta: Codable, Sendable {
     public var variableCollections: [VariableCollectionId: VariableCollectionValue]
     public var variables: [VariableId: VariableValue]
+
+    enum CodingKeys: String, CodingKey {
+        case variableCollections = "variable_collections"
+        case variables
+    }
 }
 
 public struct VariablesResponse: Codable, Sendable {

Tests/ExFigTests/Helpers/TestHelpers.swift

@@ -174,7 +174,6 @@ extension Component {
         json += "}"
 
         let decoder = JSONDecoder()
-        decoder.keyDecodingStrategy = .convertFromSnakeCase
         // swiftlint:disable:next force_try
         return try! decoder.decode(Component.self, from: Data(json.utf8))
     }
@@ -350,7 +349,6 @@ extension VariablesMeta {
         """
 
         let decoder = JSONDecoder()
-        decoder.keyDecodingStrategy = .convertFromSnakeCase
         // swiftlint:disable:next force_try
         return try! decoder.decode(VariablesMeta.self, from: Data(json.utf8))
     }

Tests/FigmaAPITests/DocumentHashConversionTests.swift

@@ -13,14 +13,14 @@ final class DocumentHashConversionTests: XCTestCase {
             "type": "COMPONENT",
             "fills": [{"type": "SOLID", "color": {"r": 1.0, "g": 0.5, "b": 0.0, "a": 1.0}}],
             "strokes": [{"type": "SOLID", "color": {"r": 0.0, "g": 0.0, "b": 0.0, "a": 1.0}}],
-            "strokeWeight": 2.0,
-            "strokeAlign": "CENTER",
-            "strokeJoin": "ROUND",
-            "strokeCap": "ROUND",
+            "stroke_weight": 2.0,
+            "stroke_align": "CENTER",
+            "stroke_join": "ROUND",
+            "stroke_cap": "ROUND",
             "effects": [{"type": "DROP_SHADOW", "radius": 4.0, "visible": true}],
             "opacity": 0.9,
-            "blendMode": "NORMAL",
-            "clipsContent": true
+            "blend_mode": "NORMAL",
+            "clips_content": true
         }
         """
 
@@ -52,7 +52,7 @@ final class DocumentHashConversionTests: XCTestCase {
             "name": "icon",
             "type": "VECTOR",
             "fills": [{"type": "SOLID", "color": {"r": 0.33333334, "g": 0.66666667, "b": 0.5, "a": 1.0}}],
-            "strokeWeight": 1.0000001,
+            "stroke_weight": 1.0000001,
             "opacity": 0.9999999
         }
         """
@@ -106,7 +106,7 @@ final class DocumentHashConversionTests: XCTestCase {
             "type": "VECTOR",
             "fills": [{
                 "type": "GRADIENT_LINEAR",
-                "gradientStops": [
+                "gradient_stops": [
                     {"position": 0.0, "color": {"r": 1.0, "g": 0.0, "b": 0.0, "a": 1.0}},
                     {"position": 1.0, "color": {"r": 0.0, "g": 0.0, "b": 1.0, "a": 1.0}}
                 ]
@@ -299,7 +299,7 @@ final class DocumentHashConversionTests: XCTestCase {
             "type": "VECTOR",
             "fills": [{
                 "type": "SOLID",
-                "blendMode": "MULTIPLY",
+                "blend_mode": "MULTIPLY",
                 "color": {"r": 1.0, "g": 0.0, "b": 0.0, "a": 1.0}
             }]
         }
@@ -317,7 +317,7 @@ final class DocumentHashConversionTests: XCTestCase {
             "id": "1:2",
             "name": "icon",
             "type": "VECTOR",
-            "fills": [{"type": "SOLID", "blendMode": "NORMAL", "color": {"r": 1.0, "g": 0.0, "b": 0.0, "a": 1.0}}]
+            "fills": [{"type": "SOLID", "blend_mode": "NORMAL", "color": {"r": 1.0, "g": 0.0, "b": 0.0, "a": 1.0}}]
         }
         """
 
@@ -326,7 +326,7 @@ final class DocumentHashConversionTests: XCTestCase {
             "id": "1:2",
             "name": "icon",
             "type": "VECTOR",
-            "fills": [{"type": "SOLID", "blendMode": "MULTIPLY", "color": {"r": 1.0, "g": 0.0, "b": 0.0, "a": 1.0}}]
+            "fills": [{"type": "SOLID", "blend_mode": "MULTIPLY", "color": {"r": 1.0, "g": 0.0, "b": 0.0, "a": 1.0}}]
         }
         """
 

Tests/FigmaAPITests/Helpers/FixtureLoader.swift

@@ -19,7 +19,6 @@ enum FixtureLoader {
     static func load<T: Decodable>(_ name: String) throws -> T {
         let data = try loadData(name)
         let decoder = JSONDecoder()
-        decoder.keyDecodingStrategy = .convertFromSnakeCase
         return try decoder.decode(T.self, from: data)
     }
 }