Use new Function instead of eval

src/lib/game-engine/input/mapped-gamepad.ts

@@ -105,25 +105,23 @@ interface GamepadConfig {
 type CopyStateFn<T> = (current: T, previous: T) => void;
 
 function compileCopyStateFn<T>(keys: string[]): CopyStateFn<T> {
-    return eval(`// Generated by src/lib/game-engine/input/mapped-gamepad.ts
+    return new Function('current', 'previous',
+`// Generated by src/lib/game-engine/input/mapped-gamepad.ts
 // compileCopyStateFn
-function copyDownFn(current, previous) {
-        ${keys.map(key => `   previous.${key} = current.${key};`).join('\n')}
-}
-copyDownFn`);
+${keys.map(key => `previous.${key} = current.${key};`).join('\n')}`) as any
 }
 
 type ApplyGamepadToInputFn<TAction extends string> = (gamepad: Gamepad, state: Record<TAction, boolean>) => void;
 
 function compileApplyGamepadToInput<TAction extends string>(controls: GamepadControls<TAction>, config: GamepadConfig): ApplyGamepadToInputFn<TAction> {
     const axisUnitDistanceSquared = Math.pow(config.axisUnitDistance, 2);
 
-    return eval(`// Generated by src/lib/game-engine/input/mapped-gamepad.ts
+    return new Function('v1', 'v2', 'sqDistance',
+`// Generated by src/lib/game-engine/input/mapped-gamepad.ts
 // compileApplyGamepadToInput
-function vectorContext(v1, v2, sqDistance) {
-    return function applyGamepadToState(gamepad, state) {
+return function applyGamepadToState(gamepad, state) {
 ${Object.entries(controls).flatMap(([action, controls]) => {
-        return `        state.${action} = ${(controls as GamepadControlType[]).map(control => {
+        return `    state.${action} = ${(controls as GamepadControlType[]).map(control => {
             switch (control.kind) {
                 case "button":
                     return `gamepad.buttons[${control.index}].pressed`;
@@ -135,9 +133,7 @@ ${Object.entries(controls).flatMap(([action, controls]) => {
                     throw new Error(`Unrecognized Control kind ${(control as any).kind}`);
             }
         }).join(`
-            || `)};`;
-    }).join('\n')}
-    }
-}
-vectorContext`)(vnew(), vnew(), sqDistance);
+        || `)};`;
+}).join('\n')}
+    }`)(vnew(), vnew(), sqDistance);
 }