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import * as fs from 'fs';
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import * as path from 'path';
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import * as http from 'http';
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import { rollup } from 'rollup';
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import virtual from '@rollup/plugin-virtual';
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import puppeteer from 'puppeteer';
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import { addLineNumbers, loadConfig, loadSvelte } from '../helpers';
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import { deepEqual } from 'assert';
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const page = `
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<body>
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<main></main>
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<script src='/bundle.js'></script>
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</body>
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`;
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const assert = fs.readFileSync(`${__dirname}/assert.js`, 'utf-8');
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describe('custom-elements', function() {
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this.timeout(10000);
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let svelte;
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let server;
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let browser;
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let code;
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function create_server() {
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return new Promise((fulfil, reject) => {
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const server = http.createServer((req, res) => {
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if (req.url === '/') {
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res.end(page);
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}
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if (req.url === '/bundle.js') {
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res.end(code);
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}
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});
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server.on('error', reject);
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server.listen('6789', () => {
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fulfil(server);
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});
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});
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}
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before(async () => {
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svelte = loadSvelte();
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console.log('[custom-element] Loaded Svelte');
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server = await create_server();
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console.log('[custom-element] Started server');
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browser = await puppeteer.launch();
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console.log('[custom-element] Launched puppeteer browser');
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});
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after(async () => {
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if (server) server.close();
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if (browser) await browser.close();
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});
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fs.readdirSync(`${__dirname}/samples`).forEach(dir => {
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if (dir[0] === '.') return;
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const solo = /\.solo$/.test(dir);
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const skip = /\.skip$/.test(dir);
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const internal = path.resolve('internal/index.mjs');
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const index = path.resolve('index.mjs');
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const warnings = [];
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(solo ? it.only : skip ? it.skip : it)(dir, async () => {
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const config = loadConfig(`${__dirname}/samples/${dir}/_config.js`);
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const expected_warnings = config.warnings || [];
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const bundle = await rollup({
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input: `${__dirname}/samples/${dir}/test.js`,
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plugins: [
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{
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resolveId(importee) {
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if (importee === 'svelte/internal' || importee === './internal') {
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return internal;
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}
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if (importee === 'svelte') {
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return index;
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}
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},
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transform(code, id) {
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if (id.endsWith('.svelte')) {
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const compiled = svelte.compile(code.replace(/\r/g, ''), {
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customElement: true,
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dev: config.dev
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});
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compiled.warnings.forEach(w => warnings.push(w));
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return compiled.js;
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}
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}
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},
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virtual({
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assert
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})
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]
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});
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const result = await bundle.generate({ format: 'iife', name: 'test' });
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code = result.output[0].code;
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const page = await browser.newPage();
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page.on('console', (type, ...args) => {
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console[type](...args);
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});
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page.on('error', error => {
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console.log('>>> an error happened');
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console.error(error);
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});
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try {
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await page.goto('http://localhost:6789');
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const result = await page.evaluate(() => test(document.querySelector('main')));
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if (result) console.log(result);
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} catch (err) {
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console.log(addLineNumbers(code));
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throw err;
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} finally {
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if (expected_warnings) {
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deepEqual(warnings.map(w => ({
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code: w.code,
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message: w.message,
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pos: w.pos,
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start: w.start,
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end: w.end
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})), expected_warnings);
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}
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}
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});
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});
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});
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