Function replacementMapFrom

packages/core/src/effect/layer-node.ts:274–284

(replacements?: Replacements)

}

function replacementMapFrom(replacements?: Replacements) {
  return (
    replacements?.reduce((map, [source, replacement]) => {
      const normalized = rewriteReplacementDependencies(replacementNode(source, replacement), map)
      const current = new Map([[source.name, normalized]])
      for (const [name, node] of map) map.set(name, rewriteReplacementDependencies(node, current))
      map.set(source.name, normalized)
      return map
    }, new Map<string, AnyNode>()) ?? new Map<string, AnyNode>()
  )
}

function rewriteReplacementDependencies(root: AnyNode, replacements: ReadonlyMap<string, AnyNode>) {
  if (replacements.size === 0) return root