mirror of
https://github.com/kevin-DL/sapper.git
synced 2026-01-12 19:25:10 +00:00
456 lines
10 KiB
TypeScript
456 lines
10 KiB
TypeScript
import * as path from 'path';
|
|
import * as fs from 'fs';
|
|
import * as http from 'http';
|
|
import * as child_process from 'child_process';
|
|
import * as ports from 'port-authority';
|
|
import mkdirp from 'mkdirp';
|
|
import rimraf from 'rimraf';
|
|
import { locations } from '../config';
|
|
import { EventEmitter } from 'events';
|
|
import { create_routes, create_main_manifests, create_compilers, create_serviceworker_manifest } from '../core';
|
|
import { Compiler, Compilers, CompileResult, CompileError } from '../core/create_compilers';
|
|
import Deferred from './utils/Deferred';
|
|
import * as events from './interfaces';
|
|
import validate_bundler from '../cli/utils/validate_bundler';
|
|
import { copy_shimport } from './utils/copy_shimport';
|
|
|
|
export function dev(opts) {
|
|
return new Watcher(opts);
|
|
}
|
|
|
|
class Watcher extends EventEmitter {
|
|
bundler: string;
|
|
dirs: {
|
|
app: string;
|
|
dest: string;
|
|
routes: string;
|
|
rollup: string;
|
|
webpack: string;
|
|
}
|
|
port: number;
|
|
closed: boolean;
|
|
|
|
dev_server: DevServer;
|
|
proc: child_process.ChildProcess;
|
|
filewatchers: Array<{ close: () => void }>;
|
|
deferreds: {
|
|
client: Deferred;
|
|
server: Deferred;
|
|
};
|
|
|
|
crashed: boolean;
|
|
restarting: boolean;
|
|
current_build: {
|
|
changed: Set<string>;
|
|
rebuilding: Set<string>;
|
|
unique_warnings: Set<string>;
|
|
unique_errors: Set<string>;
|
|
}
|
|
|
|
constructor({
|
|
app = locations.app(),
|
|
dest = locations.dest(),
|
|
routes = locations.routes(),
|
|
bundler,
|
|
webpack = 'webpack',
|
|
rollup = 'rollup',
|
|
port = +process.env.PORT
|
|
}: {
|
|
app: string,
|
|
dest: string,
|
|
routes: string,
|
|
bundler?: string,
|
|
webpack: string,
|
|
rollup: string,
|
|
port: number
|
|
}) {
|
|
super();
|
|
|
|
this.bundler = validate_bundler(bundler);
|
|
this.dirs = { app, dest, routes, webpack, rollup };
|
|
this.port = port;
|
|
this.closed = false;
|
|
|
|
this.filewatchers = [];
|
|
|
|
this.current_build = {
|
|
changed: new Set(),
|
|
rebuilding: new Set(),
|
|
unique_errors: new Set(),
|
|
unique_warnings: new Set()
|
|
};
|
|
|
|
// remove this in a future version
|
|
const template = fs.readFileSync(path.join(app, 'template.html'), 'utf-8');
|
|
if (template.indexOf('%sapper.base%') === -1) {
|
|
const error = new Error(`As of Sapper v0.10, your template.html file must include %sapper.base% in the <head>`);
|
|
error.code = `missing-sapper-base`;
|
|
throw error;
|
|
}
|
|
|
|
process.env.NODE_ENV = 'development';
|
|
|
|
process.on('exit', () => {
|
|
this.close();
|
|
});
|
|
|
|
this.init();
|
|
}
|
|
|
|
async init() {
|
|
if (this.port) {
|
|
if (!await ports.check(this.port)) {
|
|
this.emit('fatal', <events.FatalEvent>{
|
|
message: `Port ${this.port} is unavailable`
|
|
});
|
|
return;
|
|
}
|
|
} else {
|
|
this.port = await ports.find(3000);
|
|
}
|
|
|
|
const { dest } = this.dirs;
|
|
rimraf.sync(dest);
|
|
mkdirp.sync(`${dest}/client`);
|
|
if (this.bundler === 'rollup') copy_shimport(dest);
|
|
|
|
const dev_port = await ports.find(10000);
|
|
|
|
try {
|
|
const routes = create_routes();
|
|
create_main_manifests({ routes, dev_port });
|
|
} catch (err) {
|
|
this.emit('fatal', <events.FatalEvent>{
|
|
message: err.message
|
|
});
|
|
return;
|
|
}
|
|
|
|
this.dev_server = new DevServer(dev_port);
|
|
|
|
this.filewatchers.push(
|
|
watch_dir(
|
|
locations.routes(),
|
|
({ path: file, stats }) => {
|
|
if (stats.isDirectory()) {
|
|
return path.basename(file)[0] !== '_';
|
|
}
|
|
return true;
|
|
},
|
|
() => {
|
|
const routes = create_routes();
|
|
create_main_manifests({ routes, dev_port });
|
|
|
|
try {
|
|
const routes = create_routes();
|
|
create_main_manifests({ routes, dev_port });
|
|
} catch (err) {
|
|
this.emit('error', <events.ErrorEvent>{
|
|
message: err.message
|
|
});
|
|
}
|
|
}
|
|
),
|
|
|
|
fs.watch(`${locations.app()}/template.html`, () => {
|
|
this.dev_server.send({
|
|
action: 'reload'
|
|
});
|
|
})
|
|
);
|
|
|
|
this.deferreds = {
|
|
server: new Deferred(),
|
|
client: new Deferred()
|
|
};
|
|
|
|
// TODO watch the configs themselves?
|
|
const compilers: Compilers = create_compilers(this.bundler, {
|
|
webpack: this.dirs.webpack,
|
|
rollup: this.dirs.rollup
|
|
});
|
|
|
|
let log = '';
|
|
|
|
const emitFatal = () => {
|
|
this.emit('fatal', <events.FatalEvent>{
|
|
message: `Server crashed`,
|
|
log
|
|
});
|
|
|
|
this.crashed = true;
|
|
this.proc = null;
|
|
};
|
|
|
|
this.watch(compilers.server, {
|
|
name: 'server',
|
|
|
|
invalid: filename => {
|
|
this.restart(filename, 'server');
|
|
this.deferreds.server = new Deferred();
|
|
},
|
|
|
|
handle_result: (result: CompileResult) => {
|
|
this.deferreds.client.promise.then(() => {
|
|
const restart = () => {
|
|
log = '';
|
|
this.crashed = false;
|
|
|
|
ports.wait(this.port)
|
|
.then((() => {
|
|
this.emit('ready', <events.ReadyEvent>{
|
|
port: this.port,
|
|
process: this.proc
|
|
});
|
|
|
|
this.deferreds.server.fulfil();
|
|
|
|
this.dev_server.send({
|
|
status: 'completed'
|
|
});
|
|
}))
|
|
.catch(err => {
|
|
if (this.crashed) return;
|
|
|
|
this.emit('fatal', <events.FatalEvent>{
|
|
message: `Server is not listening on port ${this.port}`,
|
|
log
|
|
});
|
|
});
|
|
};
|
|
|
|
if (this.proc) {
|
|
this.proc.removeListener('exit', emitFatal);
|
|
this.proc.kill();
|
|
this.proc.on('exit', restart);
|
|
} else {
|
|
restart();
|
|
}
|
|
|
|
this.proc = child_process.fork(`${dest}/server.js`, [], {
|
|
cwd: process.cwd(),
|
|
env: Object.assign({
|
|
PORT: this.port
|
|
}, process.env),
|
|
stdio: ['ipc']
|
|
});
|
|
|
|
this.proc.stdout.on('data', chunk => {
|
|
log += chunk;
|
|
this.emit('stdout', chunk);
|
|
});
|
|
|
|
this.proc.stderr.on('data', chunk => {
|
|
log += chunk;
|
|
this.emit('stderr', chunk);
|
|
});
|
|
|
|
this.proc.on('message', message => {
|
|
if (message.__sapper__ && message.event === 'basepath') {
|
|
this.emit('basepath', {
|
|
basepath: message.basepath
|
|
});
|
|
}
|
|
});
|
|
|
|
this.proc.on('exit', emitFatal);
|
|
});
|
|
}
|
|
});
|
|
|
|
this.watch(compilers.client, {
|
|
name: 'client',
|
|
|
|
invalid: filename => {
|
|
this.restart(filename, 'client');
|
|
this.deferreds.client = new Deferred();
|
|
|
|
// TODO we should delete old assets. due to a webpack bug
|
|
// i don't even begin to comprehend, this is apparently
|
|
// quite difficult
|
|
},
|
|
|
|
handle_result: (result: CompileResult) => {
|
|
fs.writeFileSync(path.join(dest, 'build.json'), JSON.stringify({
|
|
bundler: this.bundler,
|
|
shimport: this.bundler === 'rollup' && require('shimport/package.json').version,
|
|
assets: result.assetsByChunkName
|
|
}, null, ' '));
|
|
this.deferreds.client.fulfil();
|
|
|
|
const client_files = result.assets.map((file: string) => `client/${file}`);
|
|
|
|
create_serviceworker_manifest({
|
|
routes: create_routes(),
|
|
client_files
|
|
});
|
|
|
|
// we need to wait a beat before watching the service
|
|
// worker, because of some webpack nonsense
|
|
setTimeout(watch_serviceworker, 100);
|
|
}
|
|
});
|
|
|
|
let watch_serviceworker = compilers.serviceworker
|
|
? () => {
|
|
watch_serviceworker = noop;
|
|
|
|
this.watch(compilers.serviceworker, {
|
|
name: 'service worker'
|
|
});
|
|
}
|
|
: noop;
|
|
}
|
|
|
|
close() {
|
|
if (this.closed) return;
|
|
this.closed = true;
|
|
|
|
if (this.dev_server) this.dev_server.close();
|
|
|
|
if (this.proc) this.proc.kill();
|
|
this.filewatchers.forEach(watcher => {
|
|
watcher.close();
|
|
});
|
|
}
|
|
|
|
restart(filename: string, type: string) {
|
|
if (this.restarting) {
|
|
this.current_build.changed.add(filename);
|
|
this.current_build.rebuilding.add(type);
|
|
} else {
|
|
this.restarting = true;
|
|
|
|
this.current_build = {
|
|
changed: new Set([filename]),
|
|
rebuilding: new Set([type]),
|
|
unique_warnings: new Set(),
|
|
unique_errors: new Set()
|
|
};
|
|
|
|
process.nextTick(() => {
|
|
this.emit('invalid', <events.InvalidEvent>{
|
|
changed: Array.from(this.current_build.changed),
|
|
invalid: {
|
|
server: this.current_build.rebuilding.has('server'),
|
|
client: this.current_build.rebuilding.has('client'),
|
|
serviceworker: this.current_build.rebuilding.has('serviceworker'),
|
|
}
|
|
});
|
|
|
|
this.restarting = false;
|
|
});
|
|
}
|
|
}
|
|
|
|
watch(compiler: Compiler, { name, invalid = noop, handle_result = noop }: {
|
|
name: string,
|
|
invalid?: (filename: string) => void;
|
|
handle_result?: (result: CompileResult) => void;
|
|
}) {
|
|
compiler.oninvalid(invalid);
|
|
|
|
compiler.watch((err?: Error, result?: CompileResult) => {
|
|
if (err) {
|
|
this.emit('error', <events.ErrorEvent>{
|
|
type: name,
|
|
message: err.message
|
|
});
|
|
} else {
|
|
this.emit('build', {
|
|
type: name,
|
|
|
|
duration: result.duration,
|
|
errors: result.errors,
|
|
warnings: result.warnings
|
|
});
|
|
|
|
handle_result(result);
|
|
}
|
|
});
|
|
}
|
|
}
|
|
|
|
const INTERVAL = 10000;
|
|
|
|
class DevServer {
|
|
clients: Set<http.ServerResponse>;
|
|
interval: NodeJS.Timer;
|
|
_: http.Server;
|
|
|
|
constructor(port: number, interval = 10000) {
|
|
this.clients = new Set();
|
|
|
|
this._ = http.createServer((req, res) => {
|
|
if (req.url !== '/__sapper__') return;
|
|
|
|
req.socket.setKeepAlive(true);
|
|
res.writeHead(200, {
|
|
'Access-Control-Allow-Origin': '*',
|
|
'Access-Control-Allow-Headers': 'Cache-Control',
|
|
'Content-Type': 'text/event-stream;charset=utf-8',
|
|
'Cache-Control': 'no-cache, no-transform',
|
|
'Connection': 'keep-alive',
|
|
// While behind nginx, event stream should not be buffered:
|
|
// http://nginx.org/docs/http/ngx_http_proxy_module.html#proxy_buffering
|
|
'X-Accel-Buffering': 'no'
|
|
});
|
|
|
|
res.write('\n');
|
|
|
|
this.clients.add(res);
|
|
req.on('close', () => {
|
|
this.clients.delete(res);
|
|
});
|
|
});
|
|
|
|
this._.listen(port);
|
|
|
|
this.interval = setInterval(() => {
|
|
this.send(null);
|
|
}, INTERVAL);
|
|
}
|
|
|
|
close() {
|
|
this._.close();
|
|
clearInterval(this.interval);
|
|
}
|
|
|
|
send(data: any) {
|
|
this.clients.forEach(client => {
|
|
client.write(`data: ${JSON.stringify(data)}\n\n`);
|
|
});
|
|
}
|
|
}
|
|
|
|
function noop() {}
|
|
|
|
function watch_dir(
|
|
dir: string,
|
|
filter: ({ path, stats }: { path: string, stats: fs.Stats }) => boolean,
|
|
callback: () => void
|
|
) {
|
|
let watch;
|
|
let closed = false;
|
|
|
|
import('cheap-watch').then(CheapWatch => {
|
|
if (closed) return;
|
|
|
|
watch = new CheapWatch({ dir, filter, debounce: 50 });
|
|
|
|
watch.on('+', ({ isNew }) => {
|
|
if (isNew) callback();
|
|
});
|
|
|
|
watch.on('-', callback);
|
|
|
|
watch.init();
|
|
});
|
|
|
|
return {
|
|
close: () => {
|
|
if (watch) watch.close();
|
|
closed = true;
|
|
}
|
|
};
|
|
} |