Document store searchAsync function returns wrong fieldName

[noormohiuddin]

Sample code

const { Document } = require('flexsearch');

const flexSearchDocument = new Document({
    tokenize: 'forward',
    document: {
        id: 'id',
        index: [
            'firstName',
            'lastName',
        ],
        store: true,
    }
});

for (let i = 1; i <= 2; i++) {
    flexSearchDocument.add(i, {
        firstName: 'John' + i,
        lastName: 'Doe' + i,
    });
}

const searchQuery = [
    { field: 'lastName', query: 'Doe' },
];

//Good: search will return lastName field
const searchResults = flexSearchDocument.search(searchQuery);
console.log('search:', JSON.stringify(searchResults));

//Bad: searchAsync will return firstName field
flexSearchDocument.searchAsync(searchQuery)
.then(asyncSearchResults => console.log('searchAsync:', JSON.stringify(asyncSearchResults)));

searchAsync expected output: [{"field":"lastName","result":[1,2]}]

searchAsync actual output: [{"field":"firstName","result":[1,2]}]

[noormohiuddin]

Sorry @wwqwq2313 , wwqwq2313@32c2197 doesn't fix the issue.