in packages/core/src/models/TransformHelper.ts [301:309]
get measurerSpaceBlocks(): SpaceBlock[] {
const results: SpaceBlock[] = []
if (!this.dragging || !this.snapped) return []
for (let type in this.aroundSpaceBlocks) {
if (this.aroundSpaceBlocks[type])
results.push(this.aroundSpaceBlocks[type])
}
return results
}