@snippetify/book-reader-component/dist/collection/models/selection.js

Book Reader Component

export class Selection {
  constructor(data) {
    this.content = data.content;
    this.pages = data.pages || [];
    this.serialized = data.serialized;
    this.references = data.references || []; // Paragraph positions in page start from 1
  }
  isOnSinglePage() {
    return this.pages.length === 1 || this.pages[0] === this.pages[1];
  }
  isOnSingleELement() {
    return this.references.length === 1 || this.references[0] === this.references[1];
  }
}