Align SDK tsconfig lib with React Native

src/globals.d.ts

@@ -0,0 +1,8 @@
+// Globals the RN runtime provides that are not in the ES lib, declared narrowly instead of pulling in lib "dom" or @types/node.
+// Interface + var (not const) so this merges with those declarations when an editor or other config also loads them.
+// TODO: replace this file with `"types": ["react-native"]` (as @react-native/typescript-config does) once the build
+// moves to TypeScript 5 and `moduleResolution: "bundler"`: RN exposes its types only through package.json "exports".
+interface Console {
+    log(...data: any[]): void;
+}
+declare var console: Console;

tsconfig.build.json

@@ -9,7 +9,12 @@
     "compilerOptions": {
         "target": "ES5",
         "module": "commonjs",
-        "lib": ["es6"],
+        // A subset of what RN supports at the oldest supported version (0.76). Widen it only as far as RN's list:
+        // https://github.com/facebook/react-native/blob/0.76-stable/packages/typescript-config/tsconfig.json
+        "lib": ["es2019"],
+        // No ambient @types/* (e.g. Node), otherwise they add their own libs and the list above is not enforced.
+        // RN globals come from src/globals.d.ts instead.
+        "types": [],
         "declaration": true,
         "noImplicitAny": true,
         "noEmitOnError": true,