getHighlightStrategy.js

const handlers = new Map({
        handlePhraseMouseEnter(phrase) {
            hoverState.handleMouseEnter(phrase);
            phraseConfig.handleMouseEnter(phrase);
        },
        handlePhraseMouseLeave(phrase) {
            hoverState.handleMouseLeave(phrase);
            phraseConfig.handleMouseLeave(phrase);
        },
        handlePhraseClick: phraseConfig.handlePhraseClick,
    });