Function resolveEnvironmentOptions

packages/vite/src/node/config.ts:933–1015

(
  options: EnvironmentOptions,
  alias: Alias[],
  preserveSymlinks: boolean,
  forceOptimizeDeps: boolean | undefined,
  logger: Logger,
  environmentName: string,
  isBuild: boolean,
  isBundledDev: boolean,
  // Backward compatibility
  isSsrTargetWebworkerSet?: boolean,
  preTransformRequests?: boolean,
)

}

function resolveEnvironmentOptions(
  options: EnvironmentOptions,
  alias: Alias[],
  preserveSymlinks: boolean,
  forceOptimizeDeps: boolean | undefined,
  logger: Logger,
  environmentName: string,
  isBuild: boolean,
  isBundledDev: boolean,
  // Backward compatibility
  isSsrTargetWebworkerSet?: boolean,
  preTransformRequests?: boolean,
): ResolvedEnvironmentOptions {
  const isClientEnvironment = environmentName === 'client'
  const consumer =
    options.consumer ?? (isClientEnvironment ? 'client' : 'server')
  const isSsrTargetWebworkerEnvironment =
    isSsrTargetWebworkerSet && environmentName === 'ssr'

  const isBundled =
    options.isBundled ?? (isBuild || (isClientEnvironment && isBundledDev))

  if (options.define?.['process.env']) {
    const processEnvDefine = options.define['process.env']
    if (typeof processEnvDefine === 'object') {
      const pathKey = Object.entries(processEnvDefine).find(
        // check with toLowerCase() to match with `Path` / `PATH` (Windows uses `Path`)
        ([key, value]) => key.toLowerCase() === 'path' && !!value,
      )?.[0]
      if (pathKey) {
        logger.warnOnce(
          colors.yellow(
            `The \`define\` option contains an object with ${JSON.stringify(pathKey)} for "process.env" key. ` +
              'It looks like you may have passed the entire `process.env` object to `define`, ' +
              'which can unintentionally expose all environment variables. ' +
              'This poses a security risk and is discouraged.',
          ),
        )
      }
    }
  }

  const resolve = resolveEnvironmentResolveOptions(
    options.resolve,
    alias,
    preserveSymlinks,
    logger,
    consumer,
    isSsrTargetWebworkerEnvironment,
  )
  return {
    define: options.define,
    resolve,
    keepProcessEnv:
      options.keepProcessEnv ??
      (isSsrTargetWebworkerEnvironment ? false : consumer === 'server'),
    consumer,
    optimizeDeps: resolveDepOptimizationOptions(