View difference between Paste ID: dU6qWd7L and U1cHgcz6

 class BoardDescription {
     constructor(
         board,
         title,
         subtitle,
         image_limit
     ) {
         this.board = board; // i.e. 'rf'
         this.title = title; // i.e. 'Убежище'
         this.subtitle = subtitle; // i.e. 'Доска с ОП-модерацией'
         this.image_limit = image_limit; // i.e. 4
     }
 }
 
 class ThreadDescription {
     constructor(
         no,
         sub,
         com,
         name
     ) {
         this.no = no; // i.e. 55977
         this.title = sub; // Thread title
         this.message = com; // Thread OP message
         this.op_name = name; // i.e. 'Доброанон'
     }
 }
 
 class VichanApiClient {
     constructor(base_url) {
         this.base_url = base_url; // i.e. 'https://rf.dobrochan.net/vichan'
     }
 
     boards() {
         return fetch(`${this.base_url}/boards.json`)
             .then((response) => response.json())
             .then((data) => {
                 const result = [];
                 for (const board of data) {
                     result.push(
                         new BoardDescription(
                             board.board,
                             board.title,
                             board.subtitle,
                             board.image_limit
                         )
                     )
                 }
                 return result;
             })
     }
 
     page(board, page = 0) {
         return fetch(`${this.base_url}/${board}/${page}.json`)
             .then((response) => response.json())
             .then((data) => {
                 const result = [];
                 for (const thread of data.threads) {
                     result.push(
                         new ThreadDescription(
                             thread.posts[0].no,
                             thread.posts[0].sub,
                             thread.posts[0].com,
                             thread.posts[0].name,
                         )
                     )
                 }
                 return result;
             })
     }
 }
 
 class DobrochanConsolePrinter {
     print(title, data) {
         console.log(title);
         for (const item of data) {
             for (const field in item) {
                 console.log(`${field}: ${item[field]}`);
             }
         }
     }
 }
 
 class DobrochanClient {
     constructor(
         base_url = 'https://rf.dobrochan.net/vichan'
     ) {
         this.api_client = new VichanApiClient(base_url);
         this.boards = this.api_client.boards();
     }
 
     get_boards() {
         return this.boards;
     }
 
     get_first_page(board) {
         return this.api_client.page(board, 0);
     }
 }
 
 async function main() {
     const printer = new DobrochanConsolePrinter();
     const dc = new DobrochanClient();
     printer.print(`Доски`, await dc.get_boards());
     printer.print(`Нулевая /b`, await dc.get_first_page('b'));
 }
 
 main();