Is it possible to force edge length to be 0, permanently?

[salk-law]

Is it possible to make edges lengths zero such that two nodes are immediately adjacent, and this arrangement is maintained while moving nodes? I'm imagining clicking and dragging one node and the node with which is shares an edge of zero length moves with it. Is this possible, and if so, how can it be done?

I tried setting length to zero but it doesn't seem to have any effect:

# Reproducible example of problem
library(visNetwork)
library(data.table)
library(magrittr)
# For reproducibility
set.seed(1)

# Declare nodes
nodes = data.table(
  id = letters[1:10], 
  label = letters[1:10]
)

# Declare edges
edges = data.table(
  from = sample(letters[1:10], 10, replace = T), 
  to = sample(letters[1:10], 10, replace = T),
  color = "blue",
  dashes = T,
  length = 200
)

# Add duplicate edges
edges.dupl = edges[rep(1:3, 1)][, `:=`(color = "red", dashes = F, length = 0)]
edges = rbind(edges.dupl, edges)

# Render graph
visNetwork(nodes = nodes, edges = edges) %>%
  visNodes(physics = F) %>%
  visEdges(physics = F)