mirror of
https://github.com/kevin-DL/sapper.git
synced 2026-01-12 03:05:12 +00:00
395 lines
8.6 KiB
TypeScript
395 lines
8.6 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 format_messages from 'webpack-format-messages';
|
|
import prettyMs from 'pretty-ms';
|
|
import { locations } from '../config';
|
|
import { EventEmitter } from 'events';
|
|
import { create_routes, create_main_manifests, create_compilers, create_serviceworker_manifest } from '../core';
|
|
import * as events from '../interfaces';
|
|
|
|
export function dev(opts) {
|
|
return new Watcher(opts);
|
|
}
|
|
|
|
class Watcher extends EventEmitter {
|
|
dirs: {
|
|
app: string;
|
|
dest: string;
|
|
routes: string;
|
|
webpack: string;
|
|
}
|
|
port: number;
|
|
closed: boolean;
|
|
|
|
dev_server: DevServer;
|
|
proc: child_process.ChildProcess;
|
|
filewatchers: Array<{ close: () => void }>;
|
|
deferreds: {
|
|
client: Deferred;
|
|
server: Deferred;
|
|
};
|
|
|
|
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(),
|
|
webpack = 'webpack',
|
|
port = +process.env.PORT
|
|
}: {
|
|
app: string,
|
|
dest: string,
|
|
routes: string,
|
|
webpack: string,
|
|
port: number
|
|
}) {
|
|
super();
|
|
|
|
this.dirs = { app, dest, routes, webpack };
|
|
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>{
|
|
error: new Error(`Port ${this.port} is unavailable`)
|
|
});
|
|
return;
|
|
}
|
|
} else {
|
|
this.port = await ports.find(3000);
|
|
}
|
|
|
|
const { dest } = this.dirs;
|
|
rimraf.sync(dest);
|
|
mkdirp.sync(dest);
|
|
|
|
const dev_port = await ports.find(10000);
|
|
|
|
const routes = create_routes();
|
|
create_main_manifests({ routes, dev_port });
|
|
|
|
this.dev_server = new DevServer(dev_port);
|
|
|
|
this.filewatchers.push(
|
|
watch_files(locations.routes(), ['add', 'unlink'], () => {
|
|
const routes = create_routes();
|
|
create_main_manifests({ routes, dev_port });
|
|
}),
|
|
|
|
watch_files(`${locations.app()}/template.html`, ['change'], () => {
|
|
this.dev_server.send({
|
|
action: 'reload'
|
|
});
|
|
})
|
|
);
|
|
|
|
this.deferreds = {
|
|
server: new Deferred(),
|
|
client: new Deferred()
|
|
};
|
|
|
|
// TODO watch the configs themselves?
|
|
const compilers = create_compilers({ webpack: this.dirs.webpack });
|
|
|
|
this.watch(compilers.server, {
|
|
name: 'server',
|
|
|
|
invalid: filename => {
|
|
this.restart(filename, 'server');
|
|
this.deferreds.server = new Deferred();
|
|
},
|
|
|
|
result: info => {
|
|
fs.writeFileSync(path.join(dest, 'server_info.json'), JSON.stringify(info, null, ' '));
|
|
|
|
this.deferreds.client.promise.then(() => {
|
|
const restart = () => {
|
|
ports.wait(this.port).then(this.deferreds.server.fulfil);
|
|
};
|
|
|
|
if (this.proc) {
|
|
this.proc.kill();
|
|
this.proc.on('exit', restart);
|
|
} else {
|
|
restart();
|
|
}
|
|
|
|
this.proc = child_process.fork(`${dest}/server.js`, [], {
|
|
cwd: process.cwd(),
|
|
env: Object.assign({
|
|
PORT: this.port
|
|
}, process.env)
|
|
});
|
|
});
|
|
}
|
|
});
|
|
|
|
let first = true;
|
|
|
|
this.watch(compilers.client, {
|
|
name: 'client',
|
|
|
|
invalid: filename => {
|
|
this.restart(filename, 'client');
|
|
this.deferreds.client = new Deferred();
|
|
|
|
// TODO we should delete old assets. due to a webpack bug
|
|
// i don't even begin to comprehend, this is apparently
|
|
// quite difficult
|
|
},
|
|
|
|
result: info => {
|
|
fs.writeFileSync(path.join(dest, 'client_info.json'), JSON.stringify({
|
|
assets: info.assetsByChunkName
|
|
}, null, ' '));
|
|
this.deferreds.client.fulfil();
|
|
|
|
const client_files = info.assets.map((chunk: { name: string }) => `client/${chunk.name}`);
|
|
|
|
this.deferreds.server.promise.then(() => {
|
|
this.dev_server.send({
|
|
status: 'completed'
|
|
});
|
|
|
|
this.emit('ready', <events.ReadyEvent>{
|
|
port: this.port
|
|
});
|
|
});
|
|
|
|
create_serviceworker_manifest({
|
|
routes: create_routes(),
|
|
client_files
|
|
});
|
|
|
|
watch_serviceworker();
|
|
}
|
|
});
|
|
|
|
let watch_serviceworker = compilers.serviceworker
|
|
? () => {
|
|
watch_serviceworker = noop;
|
|
|
|
this.watch(compilers.serviceworker, {
|
|
name: 'service worker',
|
|
|
|
result: info => {
|
|
fs.writeFileSync(path.join(dest, 'serviceworker_info.json'), JSON.stringify(info, null, ' '));
|
|
}
|
|
});
|
|
}
|
|
: noop;
|
|
}
|
|
|
|
close() {
|
|
if (this.closed) return;
|
|
this.closed = true;
|
|
|
|
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(),
|
|
rebuilding: new Set(),
|
|
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: any, { name, invalid = noop, result }: {
|
|
name: string,
|
|
invalid?: (filename: string) => void;
|
|
result: (stats: any) => void;
|
|
}) {
|
|
compiler.hooks.invalid.tap('sapper', (filename: string) => {
|
|
invalid(filename);
|
|
});
|
|
|
|
compiler.watch({}, (err: Error, stats: any) => {
|
|
if (err) {
|
|
this.emit('error', <events.ErrorEvent>{
|
|
type: name,
|
|
error: err
|
|
});
|
|
} else {
|
|
const messages = format_messages(stats);
|
|
const info = stats.toJson();
|
|
|
|
this.emit('build', {
|
|
type: name,
|
|
|
|
duration: info.time,
|
|
|
|
errors: messages.errors.map((message: string) => {
|
|
const duplicate = this.current_build.unique_errors.has(message);
|
|
this.current_build.unique_errors.add(message);
|
|
|
|
return {
|
|
message,
|
|
duplicate
|
|
}
|
|
}),
|
|
|
|
warnings: messages.warnings.map((message: string) => {
|
|
const duplicate = this.current_build.unique_warnings.has(message);
|
|
this.current_build.unique_warnings.add(message);
|
|
|
|
return {
|
|
message,
|
|
duplicate
|
|
}
|
|
}),
|
|
});
|
|
|
|
result(info);
|
|
}
|
|
});
|
|
}
|
|
}
|
|
|
|
class Deferred {
|
|
promise: Promise<any>;
|
|
fulfil: (value?: any) => void;
|
|
reject: (error: Error) => void;
|
|
|
|
constructor() {
|
|
this.promise = new Promise((fulfil, reject) => {
|
|
this.fulfil = fulfil;
|
|
this.reject = reject;
|
|
});
|
|
}
|
|
}
|
|
|
|
class DevServer {
|
|
clients: Set<http.ServerResponse>;
|
|
_: 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);
|
|
|
|
setInterval(() => {
|
|
this.send(null);
|
|
});
|
|
}
|
|
|
|
close() {
|
|
this._.close();
|
|
}
|
|
|
|
send(data: any) {
|
|
this.clients.forEach(client => {
|
|
client.write(`data: ${JSON.stringify(data)}\n\n`);
|
|
});
|
|
}
|
|
}
|
|
|
|
function noop() {}
|
|
|
|
function watch_files(pattern: string, events: string[], callback: () => void) {
|
|
const chokidar = require('chokidar');
|
|
|
|
const watcher = chokidar.watch(pattern, {
|
|
persistent: true,
|
|
ignoreInitial: true,
|
|
disableGlobbing: true
|
|
});
|
|
|
|
events.forEach(event => {
|
|
watcher.on(event, callback);
|
|
});
|
|
|
|
return {
|
|
close: () => watcher.close()
|
|
};
|
|
}
|