Function mergeMounts

src/spec-node/imageMetadata.ts:264–278

(imageMetadata: ImageMetadataEntry[])

}

function mergeMounts(imageMetadata: ImageMetadataEntry[]): (Mount | string)[] | undefined {
	const seen = new Set<string>();
	const mounts = imageMetadata.map(entry => entry.mounts)
		.filter(Boolean)
		.flat()
		.map(mount => ({
			obj: typeof mount === 'string' ? parseMount(mount) : mount!,
			orig: mount!,
		}))
		.reverse()
		.filter(mount => !seen.has(mount.obj.target) && seen.add(mount.obj.target))
		.reverse()
		.map(mount => mount.orig);
	return mounts.length ? mounts : undefined;
}

function unionOrUndefined<T>(entries: (T[] | undefined)[]): T[] | undefined {
	const values = [...new Set(([] as T[]).concat(...entries.filter(entry => !!entry) as T[][]))];