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improve tests

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This commit is contained in:
Jason Miller
2018-04-24 14:03:44 -04:00
parent 540b3c8154
commit 311d0524db
3 changed files with 257 additions and 237 deletions
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26
config/prerender-loader.js
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@@ -1,6 +1,6 @@
const jsdom = require('jsdom');
const os = require('os');
const util = require('util');
// const util = require('util');
const path = require('path');
const loaderUtils = require('loader-utils');
const LibraryTemplatePlugin = require('webpack/lib/LibraryTemplatePlugin');
@@ -15,6 +15,7 @@ const FILENAME = 'ssr-bundle.js';
const PRERENDER_REG = /\{\{prerender(?::\s*([^}]+)\s*)?\}\}/;
module.exports = function PrerenderLoader (content) {
// const { string, disabled, ...options } = getOptions()
const options = loaderUtils.getOptions(this) || {};
const outputFilter = options.as === 'string' || options.string ? stringToModule : String;
@@ -54,11 +55,13 @@ async function prerender (loaderContext, options, inject) {
const context = parentCompiler.options.context || process.cwd();
const entry = './' + ((options.entry && [].concat(options.entry).pop().trim()) || path.relative(context, parentCompiler.options.entry));
if (!inject && options.template) {
const loadModule = util.promisify(loaderContext.loadModule);
const source = await loadModule('!!raw-loader!' + path.resolve(context, options.template));
options.templateContent = source;
}
// undocumented option (to remove):
// !!prerender-loader?template=src/index.html!src/index.js
// if (!inject && options.template) {
// const loadModule = util.promisify(loaderContext.loadModule);
// const source = await loadModule('!!raw-loader!' + path.resolve(context, options.template));
// options.templateContent = source;
// }
const outputOptions = {
// fix for plugins not using outputfilesystem
@@ -75,7 +78,8 @@ async function prerender (loaderContext, options, inject) {
// Define PRERENDER to be true within the SSR bundle
new DefinePlugin({
PRERENDER: 'true'
PRERENDER: 'true',
document: 'undefined' // if (typeof document==='undefined') {}
}).apply(compiler);
// ... then define PRERENDER to be false within the client bundle
@@ -116,7 +120,9 @@ async function prerender (loaderContext, options, inject) {
const tpl = options.templateContent || '<!DOCTYPE html><html><head></head><body></body></html>';
dom = new jsdom.JSDOM(tpl.replace(PRERENDER_REG, '<div id="PRERENDER_INJECT"></div>'), {
// don't track source locations for performance reasons
includeNodeLocations: false,
// don't allow inline event handlers & script tag exec
runScripts: 'outside-only'
});
const { window } = dom;
@@ -129,12 +135,14 @@ async function prerender (loaderContext, options, inject) {
}
// These are missing from JSDOM
window.requestAnimationFrame = setTimeout;
window.cancelAnimationFrame = clearTimeout;
let counter = 0;
window.requestAnimationFrame = () => ++counter;
window.cancelAnimationFrame = () => {};
// Invoke the SSR bundle within the JSDOM document and grab the exported/returned result
result = window.eval(output + '\nPRERENDER_RESULT') || result;
// @todo this seems pointless
if (window.PRERENDER_RESULT != null) {
result = window.PRERENDER_RESULT;
}