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| const path = require('path');
const React = require('react');
const { parse } = require('url');
const { renderToString } = require('react-dom/server');
const browserConfig = {
features: {
FetchExternalResources: ['script'],
ProcessExternalResources: ['script'],
SkipExternalResources: false,
},
};
const Browser = function(jsdom, fs, buildDirectory, pathname, html) {
this.fs = fs;
this.jsdom = jsdom;
this.html = html;
this.pathname = pathname;
this.host = parse(`http://${pathname}`).host;
this.buildDirectory = buildDirectory;
}
Browser.prototype.resourceLoader = async function(resource, callback) {
const resourcePathname = path.join(this.buildDirectory, resource.url.pathname);
if (resource.url.host !== this.host) {
return callback();
}
try {
const content = await this.fs.readFileSync(resourcePathname)
callback(null, content);
} catch(error) {
console.error(error);
callback(error);
}
}
Browser.prototype.created = function(resolve, reject, error, window) {
Iif (error) { console.error(error) }
this.jsdom.changeURL(window, 'http://' + this.pathname);
}
Browser.prototype.done = async function(resolve, reject, error, window) {
const app = window.app;
Iif (!app) {
return reject('No application found.');
}
let initialProps;
if (typeof app.getInitialProps === 'function') {
try {
initialProps = await app.getInitialProps();
} catch (error) {
return reject(error);
}
} else {
initialProps = {};
}
const content = renderToString(
React.createElement(app, initialProps)
);
window.document.getElementById('root').innerHTML = content;
if (initialProps) {
const script = window.document.createElement('script');
const stringifiedProps = JSON.stringify(initialProps);
script.text = `window.__INITIAL_PROPS__ = ${stringifiedProps}`;
const firstScript = window.document.body.getElementsByTagName('script')[0];
window.document.body.insertBefore(script, firstScript);
}
resolve(window.document.documentElement.outerHTML);
}
Browser.prototype.execute = function() {
return new Promise((resolve, reject) => {
this.jsdom.env({
html: this.html,
...browserConfig,
resourceLoader: this.resourceLoader.bind(this),
virtualConsole: this.jsdom.createVirtualConsole().sendTo(console),
created: this.created.bind(this, resolve, reject),
done: this.done.bind(this, resolve, reject),
});
});
}
const BrowserFactory = function(jsdom, fs, buildDirectory) {
return Browser.bind(null, jsdom, fs, buildDirectory);
};
module.exports = BrowserFactory;
|