specify the import-map to use for resolving aliases. to read more about import-maps check out ImportMap.
provide a unique symbol that will be implanted into the entity's esbuild.OnResolveArgs.PluginData, so that subsequent calls to the same import-map path-resolver will terminate early, in order to avoid infinite recursion.
Optional
namespacespecify an optional namespace to assign to entity being resolved, if it does happen to be part of your importMap. if the input entity's path is not part of the import-map, then this namespace will not be assigned.
the configuration interface for the resolve import-map factory function onResolveImportMapFactory.