diff --git a/packages/astro/components/Picture.astro b/packages/astro/components/Picture.astro
index bc53cd8cc..c8613581c 100644
--- a/packages/astro/components/Picture.astro
+++ b/packages/astro/components/Picture.astro
@@ -1,9 +1,9 @@
 ---
-import { LocalImageProps, RemoteImageProps, getImage } from 'astro:assets';
-import { GetImageResult, ImageOutputFormat } from '../dist/@types/astro';
+import { getImage, type LocalImageProps, type RemoteImageProps } from 'astro:assets';
+import type { GetImageResult, ImageOutputFormat } from '../dist/@types/astro';
 import { isESMImportedImage } from '../dist/assets/internal';
 import { AstroError, AstroErrorData } from '../dist/core/errors/index.js';
-import { HTMLAttributes } from '../types';
+import type { HTMLAttributes } from '../types';
 
 type Props = (LocalImageProps | RemoteImageProps) & {
 	formats?: ImageOutputFormat[];
@@ -11,7 +11,7 @@ type Props = (LocalImageProps | RemoteImageProps) & {
 	pictureAttributes?: HTMLAttributes<'picture'>;
 };
 
-const {formats = ["webp"], pictureAttributes = {}, ...props} = Astro.props;
+const { formats = ['webp'], pictureAttributes = {}, ...props } = Astro.props;
 
 if (props.alt === undefined || props.alt === null) {
 	throw new AstroError(AstroErrorData.ImageMissingAlt);
@@ -47,7 +47,10 @@ if (fallbackImage.srcSet.values.length > 0) {
 <picture {...pictureAttributes}>
 	{
 		Object.entries(optimizedImages).map(([_, image]) => (
-			<source srcset={`${image.src}, ` + image.srcSet.attribute} type={image.srcSet.values[0].attributes?.type} />
+			<source
+				srcset={`${image.src}, ` + image.srcSet.attribute}
+				type={image.srcSet.values[0].attributes?.type}
+			/>
 		))
 	}
 	<img src={fallbackImage.src} {...additionalAttributes} {...fallbackImage.attributes} />
diff --git a/packages/astro/src/assets/types.ts b/packages/astro/src/assets/types.ts
index f8ee91cd8..8fada3e41 100644
--- a/packages/astro/src/assets/types.ts
+++ b/packages/astro/src/assets/types.ts
@@ -97,19 +97,26 @@ type ImageSharedProps<T> = T & {
 	 * ```
 	 */
 	height?: number | `${number}`;
-	/**
-	 * A list of widths to generate images for. The value of this property will be used to assign the `srcset` property on the final `img` element.
-	 *
-	 * This attribute is incompatible with `densities`.
-	 */
-	widths?: number[];
-	/**
-	 * A list of densities to generate images for. The value of this property will be used to assign the `srcset` property on the final `img` element.
-	 *
-	 * This attribute is incompatible with `widths`.
-	 */
-	densities?: (number | `${number}x`)[];
-};
+} & (
+		| {
+				/**
+				 * A list of widths to generate images for. The value of this property will be used to assign the `srcset` property on the final `img` element.
+				 *
+				 * This attribute is incompatible with `densities`.
+				 */
+				widths?: number[];
+				densities?: never;
+		  }
+		| {
+				/**
+				 * A list of densities to generate images for. The value of this property will be used to assign the `srcset` property on the final `img` element.
+				 *
+				 * This attribute is incompatible with `widths`.
+				 */
+				densities?: (number | `${number}x`)[];
+				widths?: never;
+		  }
+	);
 
 export type LocalImageProps<T> = ImageSharedProps<T> & {
 	/**