ghost/core/server/lib/mobiledoc/converters/index.js

const common = require('../../common');

module.exports = {
    get mobiledocConverter() {
        return require('./mobiledoc-converter');
    },

    get markdownConverter() {
        return require('./markdown-converter');
    },

    get htmlToMobiledocConverter() {
        try {
            return require('@tryghost/html-to-mobiledoc').toMobiledoc;
        } catch (err) {
            if (process.versions.node.startsWith('v6.')) {
                // NOTE: When Node v6 is dropped this code block should be removed
                return () => {
                    throw new common.errors.InternalServerError({
                        message: 'Unable to convert from source HTML to Mobiledoc',
                        context: 'The html-to-mobiledoc package was not installed',
                        help: 'Please upgrade to Node.js v10',
                        code: 'HTML_TO_MOBILEDOC_INSTALLATION',
                        err: err
                    });
                };
            } else {
                return () => {
                    throw new common.errors.InternalServerError({
                        message: 'Unable to convert from source HTML to Mobiledoc',
                        context: 'The html-to-mobiledoc package was not installed',
                        help: 'Please review any errors from the install process by checking the Ghost logs',
                        code: 'HTML_TO_MOBILEDOC_INSTALLATION',
                        err: err
                    });
                };
            }
        }
    }
};