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Sarj Sarj Sarj Standards

no-nested-conditional

Prefer a named value or explicit input over chained Terraform conditional selections.

SARJ215 Rule source Tests Catalog JSON

Why

Chained conditional branches obscure the value being selected and scatter deployment policy.

Fix

Extract a branch into a named local or pass a typed input from the caller. Preserve lazy evaluation, null guards and resource dependencies when extracting an expression.

Examples

Before — flagged A nested selection hides the selected configuration
main.tf
locals {
  size = var.primary ? "large" : var.secondary ? "medium" : "small"
}
After — preferred The caller supplies the selected value
main.tf
variable "size" { type = string }
module "service" {
  source = "./service"
  size   = var.size
}