@grail-ui/svelte/dist/keyManager/typeahead.js

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import { writable } from 'svelte/store';
export default function typeahead({ debounceInterval = 200 } = {}) {
    const { subscribe, set } = writable('');
    let debounceTimeout;
    let pressedLetters = [];
    function reset() {
        pressedLetters = [];
        set('');
    }
    function _add(letter) {
        pressedLetters.push(letter);
        clearTimeout(debounceTimeout);
        debounceTimeout = setTimeout(() => {
            set(pressedLetters.join(''));
            reset();
        }, debounceInterval);
    }
    return {
        subscribe,
        add: _add,
        reset,
    };
}