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‎npm/acorn-browser/scripts/acorn-browser.html‎

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<link rel=stylesheet href='https://cdn.jsdelivr.net/npm/@xterm/xterm@5.5.0/css/xterm.css'>
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<style>
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body
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{margin:20px;display:flex;flex-direction:column;gap:10px;font-family:arial}
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iframe
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{width:100%;height:300px}
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#terminal
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{height:500px}
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</style>
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<h3>rollup example</h3>
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<iframe id=iframe></iframe>
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<div id=terminal></div>
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<script>
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(()=>{
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var term;
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var webcontainer;
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var files = {};
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var packages = ['acorn'];
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var filename = 'acorn.js';
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files['entry.js'] = `
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import * as acorn from 'acorn';
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export {acorn};
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//export default espree; // iife / umd
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`;
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async function setup(){
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var {Terminal} = await import('https://cdn.jsdelivr.net/npm/@xterm/xterm/+esm');
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var {FitAddon} = await import('https://cdn.jsdelivr.net/npm/@xterm/addon-fit/+esm');
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term = new Terminal();
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var fitAddon = new FitAddon();
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term.loadAddon(fitAddon);
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term.open(terminal);
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fitAddon.fit();
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console.clear();
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console.log('rollup example');
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console.log();
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}//setup
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setTimeout(start,50);
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async function start(){
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await setup();
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for(var key in files){
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files[key] = {file:{contents:files[key]}};
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}//for
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console.log('download ...');
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var {WebContainer} = await import('https://cdn.jsdelivr.net/npm/@webcontainer/api/+esm');
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console.log('booting ...');
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webcontainer = await WebContainer.boot();
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console.log('mounting file system ...');
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await webcontainer.mount(files);
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await install();
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await package_json();
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await install_rollup();
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await rollup();
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var uint8 = await webcontainer.fs.readFile('acorn.m.js');
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var blob = new Blob([uint8],{type:'text/javascript'});
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var url = window.URL.createObjectURL(blob);
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console.log('download...');
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var a = document.createElement('a');
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a.href = url;
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a.download = 'acorn.m.js';
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document.body.append(a);
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a.click();
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console.log('done');
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return;
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var {espree} = await import('https://libs.ext-code.com/external/js/espree/espree.m.js');
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var {estraverse} = await import(url);
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var code = `
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function fn(){
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console.log('123');
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}//fn
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`;
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var ast = espree.parse(code);
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estraverse.traverse(ast, {
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enter(node) {
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if (node.type === 'FunctionDeclaration') {
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console.log('FunctionDeclaration:', node.id.name);
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}
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if (
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node.type === 'VariableDeclarator' &&
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node.init &&
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(node.init.type === 'ArrowFunctionExpression' ||
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node.init.type === 'FunctionExpression')
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) {
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console.log('Function assigned to variable:', node.id.name);
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}
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}
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});
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console.log('done.');
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async function install(){
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var str = packages.join(' ');
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console.log('npm install',str,'...');
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packages.unshift('install');
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var process = await webcontainer.spawn('npm',packages);
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var stream = new WritableStream({write(data){term.write(data)}});
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process.output.pipeTo(stream)
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var code = await process.exit;
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if(code!=0){
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console.log('an error occurred');
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}
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return code;
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}//install
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async function package_json(){
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console.log('npm install ( package.json ) ...');
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var process = await webcontainer.spawn('npm',['install']);
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var stream = new WritableStream({write(data){term.write(data)}});
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process.output.pipeTo(stream)
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var code = await process.exit;
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if(code!=0){
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console.log('an error occurred');
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}
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return code;
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}//package_json
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async function install_rollup(){
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var packages = [
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'rollup',
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'@rollup/plugin-commonjs',
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'@rollup/plugin-node-resolve',
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'@rollup/plugin-json',
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'rollup-plugin-polyfill-node'
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];
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console.log('npm install',packages.join(' '),'...');
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packages.unshift('install');
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var process = await webcontainer.spawn('npm',packages);
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var stream = new WritableStream({write(data){term.write(data)}});
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process.output.pipeTo(stream)
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var code = await process.exit;
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if(code!=0){
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console.log('an error occurred');
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}
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return code;
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}//install_rollup
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async function rollup(){
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console.log('perform rollup ...');
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var process = await webcontainer.spawn('npx',['-y','rollup','--config','rollup.config.js']);
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var stream = new WritableStream({write(data){term.write(data)}});
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process.output.pipeTo(stream);
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var code = await process.exit;
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if(code!=0){
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console.log('an error occurred');
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}
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return code;
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}//rollup
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}//start
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//:
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files['package.json'] = `
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{
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"name": "node-test",
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"version": "1.0.0",
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"scripts": {}
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}
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`;
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files['rollup.config.js'] = `
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import resolve from '@rollup/plugin-node-resolve';
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import commonjs from '@rollup/plugin-commonjs';
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import json from '@rollup/plugin-json';
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import nodePolyfills from 'rollup-plugin-polyfill-node';
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export default {
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input : 'entry.js',
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output : {
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file : '${filename}',
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format : 'es'
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//format : 'iife', // or 'umd'
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//name : 'espree', // This becomes window.espree
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//exports : 'default',
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},
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plugins : [
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commonjs(),
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json(),
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nodePolyfills(),
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resolve({preferBuiltins:false})
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]
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};
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`;
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})();
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</script>
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