Function getLegacyTemplateValue

packages/cli/src/command-line.ts:30–44

(templateValue?: string)

const LEGACY_TEMPLATE_ALIASES = new Set(['javascript', 'js', 'jsx'])

function getLegacyTemplateValue(templateValue?: string) {
  if (!templateValue) {
    return undefined
  }

  const normalized = templateValue.toLowerCase().trim()
  if (
    SUPPORTED_LEGACY_TEMPLATES.has(normalized) ||
    LEGACY_TEMPLATE_ALIASES.has(normalized)
  ) {
    return normalized
  }

  return undefined
}

function slugifyStarterName(value: string) {
  return value