legal-markdown-js/dist/extensions/generators/pdf-connectors/resolver.js

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

import { PdfDependencyError } from '../../../errors/index.js';
import { PuppeteerConnector } from './puppeteer-connector.js';
import { SystemChromeConnector } from './system-chrome-connector.js';
import { WeasyprintConnector } from './weasyprint-connector.js';
const CONNECTOR_FACTORIES = {
    puppeteer: () => new PuppeteerConnector(),
    'system-chrome': () => new SystemChromeConnector(),
    weasyprint: () => new WeasyprintConnector(),
};
export function createPdfConnector(preference) {
    return CONNECTOR_FACTORIES[preference]();
}
export async function resolvePdfConnector(preference) {
    if (preference !== 'auto') {
        const connector = createPdfConnector(preference);
        if (await connector.isAvailable()) {
            return connector;
        }
        throw new PdfDependencyError(`Requested PDF connector "${preference}" is not available on this system.`);
    }
    // Auto-resolution priority: puppeteer first (self-contained, most
    // reproducible across environments), then system-chrome (zero-install for
    // users with a browser), then weasyprint (Python-based, least common).
    const chain = [
        createPdfConnector('puppeteer'),
        createPdfConnector('system-chrome'),
        createPdfConnector('weasyprint'),
    ];
    for (const connector of chain) {
        if (await connector.isAvailable()) {
            return connector;
        }
    }
    throw new PdfDependencyError('No PDF backend is available. Install one of:\n' +
        '  - npm install puppeteer\n' +
        '  - Install Chrome/Chromium/Edge/Brave/Arc\n' +
        '  - brew install weasyprint (or pip install weasyprint)');
}
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