legal-markdown-js/dist/extensions/generators/docx-browser.js

Node.js implementation of LegalMarkdown for processing legal documents with markdown and YAML - Complete feature parity with Ruby version

import { AlignmentType, Document, Footer, Header, PageNumber, PageOrientation, Packer, Paragraph, TextRun, } from 'docx';
import { adaptCssToDocxStyles } from './docx/css-style-adapter.js';
import { convertHtmlToDocxBlocks, createDefaultNumbering } from './docx/html-to-docx.js';
const PAGE_SIZES = {
    A4: { width: 11906, height: 16838 },
    Letter: { width: 12240, height: 15840 },
    Legal: { width: 12240, height: 20160 },
};
/**
 * Generate a DOCX Blob from HTML and CSS strings - browser-safe.
 *
 * Does not touch the filesystem. CSS is accepted as a string instead
 * of a file path. Returns a Blob that can be downloaded directly via
 * URL.createObjectURL.
 */
export async function generateDocxBuffer(html, css, options = {}) {
    const stylePreset = adaptCssToDocxStyles(css);
    const blocks = await convertHtmlToDocxBlocks(html, {
        styles: stylePreset,
        includeHighlighting: false,
        basePath: '',
    });
    const header = new Header({
        children: [new Paragraph({ children: [new TextRun('')] })],
    });
    const footer = new Footer({
        children: [
            new Paragraph({
                alignment: AlignmentType.RIGHT,
                children: [
                    new TextRun('Pg: '),
                    new TextRun({ children: [PageNumber.CURRENT] }),
                    new TextRun(' / '),
                    new TextRun({ children: [PageNumber.TOTAL_PAGES] }),
                ],
            }),
        ],
    });
    const selectedFormat = options.format ?? 'A4';
    const pageDims = PAGE_SIZES[selectedFormat] ?? PAGE_SIZES.A4;
    const size = options.landscape
        ? { width: pageDims.height, height: pageDims.width, orientation: PageOrientation.LANDSCAPE }
        : { width: pageDims.width, height: pageDims.height, orientation: PageOrientation.PORTRAIT };
    const margins = {
        top: 1440,
        right: 1440,
        bottom: 1440,
        left: 1440,
        header: 720,
        footer: 720,
        gutter: 0,
    };
    const document = new Document({
        title: options.title,
        description: options.title,
        styles: stylePreset.styles,
        numbering: createDefaultNumbering(stylePreset),
        sections: [
            {
                properties: { page: { size, margin: margins } },
                headers: { default: header },
                footers: { default: footer },
                children: blocks,
            },
        ],
    });
    const base64 = await Packer.toBase64String(document);
    const binaryStr = atob(base64);
    const bytes = new Uint8Array(binaryStr.length);
    for (let i = 0; i < binaryStr.length; i++) {
        bytes[i] = binaryStr.charCodeAt(i);
    }
    return new Blob([bytes], {
        type: 'application/vnd.openxmlformats-officedocument.wordprocessingml.document',
    });
}
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