Function resolveFromConfig

packages/context/src/inject-config.ts:150–163

* Resolver for `@config` * @param ctx - Context object * @param injection - Injection metadata * @param session - Resolution session

(
  ctx: Context,
  injection: Injection,
  session: ResolutionSession,
)

 * @param session - Resolution session
 */
function resolveFromConfig(
  ctx: Context,
  injection: Injection,
  session: ResolutionSession,
): ValueOrPromise<unknown> {
  const bindingKey = getTargetBindingKey(injection, session);
  // Return `undefined` if no current binding is present
  if (!bindingKey) return undefined;
  const meta = injection.metadata;
  return ctx.getConfigAsValueOrPromise(bindingKey, meta.propertyPath, {
    session,
    optional: meta.optional,
  });
}

/**
 * Resolver from `@config.getter`