teleform/dist/mjs/mdv1.js

Format Telegram messages, escape special characters, switch formatting styles, convert special entities to formatted text and vice versa, form Telegram links, use Unicode symbols.

import { format } from './format.js';
import { mdv2 } from './mdv2.js';
import { html } from './html.js';
export { mdv1 };
class mdv1 extends format {
    static _to_escape = [
        '_',
        '*',
        '`',
        '['
    ];
    static _tags = (type, optional) => ({
        bold: ['*', '*'],
        italic: ['_', '_'],
        pre: [`\`\`\`${optional ?? ''}\n`, '```'],
        code: ['`', '`'],
        text_link: ['[', `](${optional})`],
        text_mention: ['[', `](tg://user?id=${optional})`]
    }[type]);
    static _regexp = new RegExp('(?<bold>' +
        '(?:(?<=\\\\\\\\)|(?<!\\\\))\\*' +
        '(?<bold_text>.*?)' +
        '(?:(?<=\\\\\\\\)|(?<!\\\\))\\*)|' +
        '(?<italic>' +
        '(?:(?<=\\\\\\\\)|(?<!\\\\))_' +
        '(?<italic_text>.*?)' +
        '(?:(?<=\\\\\\\\)|(?<!\\\\))_)|' +
        '(?<pre>' +
        '(?:(?<=\\\\\\\\)|(?<!\\\\))```' +
        '((?<pre_language>(?<!\\s)[^`\\n]+)\\n)?\\n?' +
        '(?<pre_text>.*?)' +
        '(?:(?<=\\\\\\\\)|(?<!\\\\))```)|' +
        '(?<code>' +
        '(?:(?<=\\\\\\\\)|(?<!\\\\))`' +
        '(?<code_text>.*?)' +
        '(?:(?<=\\\\\\\\)|(?<!\\\\))`)|' +
        '(?<text_link>' +
        '(?:(?<=\\\\\\\\)|(?<!\\\\))\\[' +
        '(?<text_link_text>.*?)' +
        '(?:(?<=\\\\\\\\)|(?<!\\\\))\\]' +
        '\\((?<text_link_data>[^\\n]+?)(?:(?<=\\\\\\\\)|(?<!\\\\))\\))', 'gs');
    static to_mdv2(string) {
        return this._toggle(string, mdv2);
    }
    static to_md(string) {
        return this.to_mdv2(string);
    }
    static to_html(string) {
        return this._toggle(string, html);
    }
    static bold(string) {
        return `*${string}*`;
    }
    static italic(string) {
        return `_${string}_`;
    }
    static text_link(string, url) {
        return `[${string}](${url})`;
    }
    static text_mention(string, uid) {
        return `[${string}](tg://user?id=${uid})`;
    }
    static code(string) {
        return `\`${string}\``;
    }
    static pre(string, language) {
        return `\`\`\`${language ?? ''}\n${string}\`\`\``;
    }
}