index.js

const fs = require('fs');
const converter = require('./converter');
const pdf = require('phantom-html2pdf');

function convertToHtml(jsonFileList) {
    const splitJSONFiles = jsonFileList.split(',');
    const html = splitJSONFiles
        .map(filename => {
            const swaggerJSON = JSON.parse(fs.readFileSync(filename.trim(), 'utf8'));
            return converter.convertToHtml(swaggerJSON.document || swaggerJSON);
        })
        .join("<div style='page-break-after:always' />");

    const htmlFileName =
        splitJSONFiles.length === 1
            ? splitJSONFiles[0].substr(0, splitJSONFiles[0].lastIndexOf('.')) + '.html'
            : './output.html';

    fs.writeFile(htmlFileName, html, err => {
        if (err) {
            console.log('err:' + err);
        } else {
            console.log('Done writing ' + htmlFileName);
        }
    });
}

function convertToPdf(jsonFileList) {
    const splitJSONFiles = jsonFileList.split(',');
    const html = splitJSONFiles
        .map(filename => {
            const swaggerJSON = JSON.parse(fs.readFileSync(filename.trim(), 'utf8'));
            return converter.convertToHtml(swaggerJSON.document || swaggerJSON);
        })
        .join("<div style='page-break-after:always' />");

    const pdfFileName =
        splitJSONFiles.length === 1
            ? splitJSONFiles[0].substr(0, splitJSONFiles[0].lastIndexOf('.')) + '.pdf'
            : './output.pdf';

    let config = {
        css: './normalize.css',
        html
    };

    pdf.convert(config, function(err, result) {
        if (err) console.log('err:' + err);
        else {
            /* Using a buffer and callback */
            result.toBuffer(function(returnedBuffer) {
                console.log('return buffer');
            });

            /* Using a readable stream */
            var stream = result.toStream();

            /* Using the temp file path */
            var tmpPath = result.getTmpPath();

            /* Using the file writer and callback */
            result.toFile(pdfFileName, function(err) {
                if (err) {
                    console.log('err:' + err);
                } else {
                    console.log('Done writing ' + pdfFileName);
                }
            });
        }
    });
}

(function() {
    exports = {
        convertToHtml,
        convertToPdf,
        converter
    };

    if (!module.parent) {
        if (process.argv.length >= 4 && process.argv[3] === 'html') {
            convertToHtml(process.argv[2]);
        } else {
            convertToPdf(process.argv[2]);
        }
    }
})();