react-use-flexsearch

React hook to search a FlexSearch index.

Status

Installation

npm install --save react-use-flexsearch

API

useFlexSearch(query: String, index: Index! | String!, store: Object!, options: Object) => Object[]

The useFlexSearch hook takes your search query, index, and store and returns results as an array. Searches are memoized to ensure efficient searching.

Parameters

Name	Type	Description
query	String	The search query. As this value updates, the return value will be updated.
index	Index | String	Required. The FlexSearch index. This can be an instance of a FlexSearch index or one that has been exported via Index.export.
store	Object	Required. Object mapping a result id to an object of data.
options	Object	Search options passed to Index.search.

Example

The following example renders a text input and queries the FlexSearch index on form submission.

Note: Formik is used in the following example to handle form state, but is not required. As long as your query is passed as the first parameter, you can manage how to store it.

import React, { useState } from 'react'
import { useFlexSearch } from 'react-use-flexsearch'
import { Formik, Form, Field } from 'formik'

const index = /* a FlexSearch index */
const store = {
  1: { id: 1, title: 'Document 1' },
  2: { id: 2, title: 'Document 2' },
  3: { id: 3, title: 'Document 3' },
}

const SearchBar = () => {
  const [query, setQuery] = useState(null)
  const results = useFlexSearch(query, index, store)

  return (
    <div>
      <Formik
        initialValues={{ query: '' }}
        onSubmit={(values, { setSubmitting }) => {
          setQuery(values.query)
          setSubmitting(false)
        }}
      >
        <Form>
          <Field name="query" />
        </Form>
      </Formik>
      <h1>Results</h1>
      <ul>
        {results.map(result => (
          <li key={result.id}>{result.title}</li>
        ))}
      </ul>
    </div>
  )
}