Is there a method for exporting an index as a single json object?

[budarin]

Need to store index as an object in browser caches but not found a method which could help with it

[rpsirois]

#273
#274
#290
#299

function exportIndex(flexSearchIndex) {
  // https://github.com/nextapps-de/flexsearch/issues/299
  // https://github.com/nextapps-de/flexsearch/issues/274
  return new Promise((res, rej) => {
    let pkg = [];
    const expected = new Set([
      "reg",
      "reg.cfg",
      "reg.cfg.map",
      "reg.cfg.map.ctx"
    ]);
    const received = new Set();

    const setsEq = (a, b) => {
      if (a.size != b.size) {
        return false;
      }

      return Array.from(a).every(el => b.has(el));
    };

    flexSearchIndex.export((key, data) => {
      // https://github.com/nextapps-de/flexsearch/issues/290
      // https://github.com/nextapps-de/flexsearch/issues/273
      pkg.push([
        key
          .toString()
          .split(".")
          .pop(),
        data
      ]);
      received.add(key);

      if (setsEq(expected, received)) {
        res(JSON.stringify(pkg));
      }
    });
  });
}

[rxliuli]

Just add a version implemented by ts

function exportIndex(flexSearchIndex: Index) {
  // https://github.com/nextapps-de/flexsearch/issues/299
  // https://github.com/nextapps-de/flexsearch/issues/274
  return new Promise<[string, any][]>((res, rej) => {
    const pkg: [string, any][] = []
    const expected = new Set([
      'reg',
      'reg.cfg',
      'reg.cfg.map',
      'reg.cfg.map.ctx',
    ])
    const received = new Set<string>()

    const setsEq = (a: Set<string>, b: Set<string>) => {
      if (a.size != b.size) {
        return false
      }

      return Array.from(a).every((el) => b.has(el))
    }

    flexSearchIndex.export((key, data) => {
      // https://github.com/nextapps-de/flexsearch/issues/290
      // https://github.com/nextapps-de/flexsearch/issues/273
      pkg.push([key.toString().split('.').pop()!, data])
      received.add(key as string)

      if (setsEq(expected, received)) {
        res(pkg)
      }
    })
  })
}

[ts-thomas]

There will be an update in the next version which returns promises instead of applying inline awaits.