first app vibe

app/node_modules/three/examples/jsm/lights/RectAreaLightUniformsLib.js

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+import { UniformsLib } from 'three';
+import { RectAreaLightTexturesLib } from './RectAreaLightTexturesLib.js';
+
+/**
+ * This class is only relevant when using {@link RectAreaLight} with {@link WebGLRenderer}.
+ *
+ * Before rect area lights can be used, the internal uniform library of the renderer must be
+ * enhanced with the following code.
+ *
+ * ```js
+ * RectAreaLightUniformsLib.init();
+ * ```
+ *
+ * @hideconstructor
+ * @three_import import { RectAreaLightUniformsLib } from 'three/addons/lights/RectAreaLightUniformsLib.js';
+ */
+class RectAreaLightUniformsLib {
+
+	/**
+	 * Inits the uniform library required when using rect area lights.
+	 */
+	static init() {
+
+		RectAreaLightTexturesLib.init();
+
+		const { LTC_FLOAT_1, LTC_FLOAT_2, LTC_HALF_1, LTC_HALF_2 } = RectAreaLightTexturesLib;
+
+		// data textures
+
+		UniformsLib.LTC_FLOAT_1 = LTC_FLOAT_1;
+		UniformsLib.LTC_FLOAT_2 = LTC_FLOAT_2;
+
+		UniformsLib.LTC_HALF_1 = LTC_HALF_1;
+		UniformsLib.LTC_HALF_2 = LTC_HALF_2;
+
+	}
+
+}
+
+export { RectAreaLightUniformsLib };