Function getUniqueProgramIdentifier

packages/router-plugin/src/core/utils.ts:43–66

(
  programPath: babel.NodePath<t.Program>,
  baseName: string,
)

}

export function getUniqueProgramIdentifier(
  programPath: babel.NodePath<t.Program>,
  baseName: string,
): t.Identifier {
  let name = baseName
  let suffix = 2

  const programScope = programPath.scope.getProgramParent()

  while (
    programScope.hasBinding(name) ||
    programScope.hasGlobal(name) ||
    programScope.hasReference(name)
  ) {
    name = `${baseName}${suffix}`
    suffix++
  }

  // Register the name so subsequent calls within the same traversal
  // see it and avoid collisions
  programScope.references[name] = true

  return t.identifier(name)
}