dexie to use filter while exporting and importing (dexie-export-import)

Question

I have two tables in dexie database and I am trying to export-import only one of them with dexie-export-import.
Official dexie document says you have filter as optional parameter

//Optional filter allows to import/export subset of data
export interface ExportOptions {
  noTransaction?: boolean;
  numRowsPerChunk?: number;
  prettyJson?: boolean;
  filter?: (table: string, value: any, key?: any) => boolean;
  progressCallback?: (progress: ExportProgress) => boolean;
}

well can any one show me how to use that filter parameter...
something like

database.export({prettyJson: true, filter: (table: 'A', value: '', key: '') => true});

Answer 1

import {exportDB} from "dexie-export-import";

function exportSingleTable(db, tableName) {
  return exportDB(db, {filter: (table, value, key) => table === tableName});
}

exportSingleTable(yourDexieInstance, "yourTableNameToExport").then(blob => {
  alert("done");
  // Result is in blob
}).catch(error => {
  alert("error: " + error);
});