react-instantsearch/examples/hooks-react-native/src/SearchBox.tsx

import React, { useEffect, useRef, useState } from 'react';
import { StyleSheet, View, TextInput } from 'react-native';
import { useSearchBox, UseSearchBoxProps } from 'react-instantsearch-hooks';

type SearchBoxProps = UseSearchBoxProps & {
  onChange: (newValue: string) => void;
};

export function SearchBox({ onChange, ...props }: SearchBoxProps) {
  const { query, refine } = useSearchBox(props);
  const [value, setValue] = useState(query);
  const inputRef = useRef<TextInput>(null);

  // Track when the value coming from the React state changes to synchronize
  // it with InstantSearch.
  useEffect(() => {
    if (query !== value) {
      refine(value);
    }
    // We don't want to track when the InstantSearch query changes.
    // eslint-disable-next-line react-hooks/exhaustive-deps
  }, [value, refine]);

  // Track when the InstantSearch query changes to synchronize it with
  // the React state.
  useEffect(() => {
    // We bypass the state update if the input is focused to avoid concurrent
    // updates when typing.
    if (!inputRef.current?.isFocused() && query !== value) {
      setValue(query);
    }
    // We don't want to track when the React state value changes.
    // eslint-disable-next-line react-hooks/exhaustive-deps
  }, [query]);

  return (
    <View style={styles.container}>
      <TextInput
        ref={inputRef}
        style={styles.input}
        value={value}
        onChangeText={(newValue) => {
          setValue(newValue);
          onChange(newValue);
        }}
        clearButtonMode="while-editing"
        autoCapitalize="none"
        autoCorrect={false}
        spellCheck={false}
        autoCompleteType="off"
      />
    </View>
  );
}

const styles = StyleSheet.create({
  container: {
    backgroundColor: '#252b33',
    padding: 18,
  },
  input: {
    height: 48,
    padding: 12,
    fontSize: 16,
    backgroundColor: '#fff',
    borderRadius: 4,
    borderWidth: 1,
    borderColor: '#ddd',
  },
});