browser/libs/importer/src/util.ts

import { ClientType } from "@bitwarden/client-type";

import { LoaderAvailability, ImportersMetadata } from "./metadata";
import { ImportType } from "./models";

/** Lookup the loaders supported by a specific client.
 *  WARNING: this method does not supply metadata for every import type.
 *  @returns `undefined` when metadata is not defined for the type, or
 *   an array identifying the supported clients.
 */
export function availableLoaders(
  importersMetadata: ImportersMetadata,
  type: ImportType,
  client: ClientType,
) {
  if (!importersMetadata) {
    return undefined;
  }

  if (!(type in importersMetadata)) {
    return undefined;
  }

  const capabilities = importersMetadata[type]?.loaders ?? [];
  const available = capabilities.filter((loader) => LoaderAvailability[loader].includes(client));
  return available;
}