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project.ts
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project.ts
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import { minify } from 'https://esm.sh/terser'
import { EventEmitter } from './events.ts'
import { createHtml } from './html.ts'
import log from './log.ts'
import route from './route.ts'
import { colors, ensureDir, path, Sha1, walk } from './std.ts'
import { compile } from './tsc/compile.ts'
import type { APIHandle, Config, Location, RouterURL } from './types.ts'
import util, { hashShort } from './util.ts'
import './vendor/clean-css-builds/v4.2.2.js'
import { Document } from './vendor/deno-dom/document.ts'
import less from './vendor/less/less.js'
const reHttp = /^https?:\/\//i
const reModuleExt = /\.(js|jsx|mjs|ts|tsx)$/i
const reStyleModuleExt = /\.(css|less|sass|scss)$/i
const reHashJs = new RegExp(`\\.[0-9a-fx]{${hashShort}}\\.js$`, 'i')
const { CleanCSS } = window as any
const cleanCSS = new CleanCSS({ compatibility: '*' /* Internet Explorer 10+ */ })
interface Module {
id: string
url: string
isRemote: boolean
deps: { url: string, hash: string }[]
sourceFilePath: string
sourceType: string
sourceHash: string
jsFile: string
jsContent: string
jsSourceMap: string
hash: string
}
interface RenderResult {
code: number
head: string[]
body: string
}
export default class Project {
readonly mode: 'development' | 'production'
readonly rootDir: string
readonly config: Config
readonly ready: Promise<void>
#modules: Map<string, Module> = new Map()
#pageModules: Map<string, { moduleId: string, rendered: Map<string, RenderResult> }> = new Map()
#fsWatchListeners: Array<EventEmitter> = []
constructor(dir: string, mode: 'development' | 'production') {
this.mode = mode
this.rootDir = path.resolve(dir)
this.config = {
srcDir: '/',
outputDir: '/dist',
baseUrl: '/',
defaultLocale: 'en',
ssr: {
fallback: '404.html'
},
buildTarget: mode === 'development' ? 'es2018' : 'es2015',
sourceMap: false,
importMap: {
imports: {}
}
}
this.ready = (async () => {
const t = performance.now()
await this._loadConfig()
await this._init()
log.debug('initialize project token ' + Math.round(performance.now() - t) + 'ms')
})()
}
get isDev() {
return this.mode === 'development'
}
get srcDir() {
return path.join(this.rootDir, this.config.srcDir)
}
get buildDir() {
return path.join(this.rootDir, '.aleph', this.mode + '.' + this.config.buildTarget)
}
get apiPaths() {
return Array.from(this.#modules.keys())
.filter(p => p.startsWith('./api/'))
.map(p => p.slice(1).replace(reModuleExt, ''))
}
isHMRable(moduleId: string) {
return !reHttp.test(moduleId) && (
moduleId === './404.js' ||
moduleId === './app.js' ||
moduleId === './data.js' ||
(moduleId === './data/index.js' && !this.#modules.has('./data.js')) ||
moduleId.startsWith('./pages/') ||
moduleId.startsWith('./components/') ||
reStyleModuleExt.test(moduleId)
)
}
getModule(id: string): Module | null {
if (this.#modules.has(id)) {
return this.#modules.get(id)!
}
return null
}
getModuleByPath(pathname: string): Module | null {
const { baseUrl } = this.config
let modId = pathname
if (baseUrl !== '/') {
modId = util.trimPrefix(modId, baseUrl)
}
if (modId.startsWith('/_aleph/')) {
modId = util.trimPrefix(modId, '/_aleph')
}
if (modId.startsWith('/-/')) {
modId = '//' + util.trimSuffix(util.trimPrefix(modId, '/-/'), '.js')
if (!reStyleModuleExt.test(modId)) {
modId = modId + '.js'
}
} else {
modId = '.' + modId
if (reHashJs.test(modId)) {
const id = modId.slice(0, modId.length - (hashShort + 4))
if (reStyleModuleExt.test(id)) {
modId = id
} else {
modId = id + '.js'
}
}
}
if (!this.#modules.has(modId) && modId == './data.js') {
modId = './data/index.js'
}
if (!this.#modules.has(modId)) {
console.warn(`can't get the module by path '${pathname}(${modId})'`)
}
return this.getModule(modId)
}
createFSWatcher(): EventEmitter {
const e = new EventEmitter()
this.#fsWatchListeners.push(e)
return e
}
removeFSWatcher(e: EventEmitter) {
e.removeAllListeners()
const index = this.#fsWatchListeners.indexOf(e)
if (index > -1) {
this.#fsWatchListeners.splice(index, 1)
}
}
async getAPIHandle(path: string): Promise<APIHandle | null> {
if (path) {
const importPath = '.' + path + '.js'
if (this.#modules.has(importPath)) {
try {
const { default: handle } = await import("file://" + this.#modules.get(importPath)!.jsFile)
return handle
} catch (error) {
log.error(error)
}
}
}
return null
}
async getPageHtml(location: Location): Promise<[number, string]> {
const { baseUrl, defaultLocale } = this.config
const url = route(
baseUrl,
Array.from(this.#pageModules.keys()),
{
location,
defaultLocale
}
)
if (url.pagePath === '') {
return [200, this.getDefaultIndexHtml()]
}
const mainModule = this.#modules.get('./main.js')!
const { code, head, body } = await this._renderPage(url)
const html = createHtml({
lang: url.locale,
head: head,
scripts: [
{ type: 'application/json', id: 'ssr-data', innerText: JSON.stringify({ url }) },
{ src: path.join(baseUrl, `/_aleph/main.${mainModule.hash.slice(0, hashShort)}.js`), type: 'module' },
],
body,
minify: !this.isDev
})
return [code, html]
}
getDefaultIndexHtml(): string {
const { baseUrl, defaultLocale } = this.config
const mainModule = this.#modules.get('./main.js')!
const html = createHtml({
lang: defaultLocale,
scripts: [
{ src: path.join(baseUrl, `/_aleph/main.${mainModule.hash.slice(0, hashShort)}.js`), type: 'module' },
],
body: `<main></main>`,
minify: !this.isDev
})
return html
}
async getData() {
const mod = this.#modules.get('./data.js') || this.#modules.get('./data/index.js')
if (mod) {
try {
const { default: Data } = await import("file://" + mod.jsFile)
let data: any = Data
if (util.isFunction(Data)) {
data = await Data()
}
if (util.isPlainObject(data)) {
return data
} else {
log.warn(`module '${mod.url}' should return a plain object as default`)
}
} catch (error) {
log.error(error)
}
}
return {}
}
async build() {
const start = performance.now()
const outputDir = path.join(this.srcDir, this.config.outputDir)
const distDir = path.join(outputDir, '_aleph')
const outputModules = new Set<string>()
const lookup = async (moduleId: string) => {
if (this.#modules.has(moduleId) && !outputModules.has(moduleId)) {
outputModules.add(moduleId)
const { deps } = this.#modules.get(moduleId)!
deps.forEach(({ url }) => {
const { id } = this._newModule(url)
lookup(id)
})
}
}
// wait project ready
await this.ready
// lookup output modules
lookup('./main.js')
// ensure ouput directory ready
if (util.existsDir(outputDir)) {
await Deno.remove(outputDir, { recursive: true })
}
await Promise.all([outputDir, distDir].map(dir => ensureDir(dir)))
// copy public files
const publicDir = path.join(this.rootDir, 'public')
if (util.existsDir(publicDir)) {
for await (const { path: p } of walk(publicDir, { includeDirs: false })) {
const rp = path.resolve(util.trimPrefix(p, publicDir))
await Deno.copyFile(p, path.join(outputDir, rp))
}
}
// write modules
const { sourceMap } = this.config
await Promise.all(Array.from(outputModules).map((moduleId) => {
const { sourceFilePath, isRemote, jsContent, jsSourceMap, hash } = this.#modules.get(moduleId)!
const saveDir = path.join(distDir, path.dirname(sourceFilePath))
const name = path.basename(sourceFilePath).replace(reModuleExt, '')
const jsFile = path.join(saveDir, name + (isRemote ? '' : '.' + hash.slice(0, hashShort))) + '.js'
return Promise.all([
writeTextFile(jsFile, jsContent),
sourceMap ? writeTextFile(jsFile + '.map', jsSourceMap) : Promise.resolve(),
])
}))
// write static data
if (this.#modules.has('./data.js') || this.#modules.has('./data/index.js')) {
const { hash } = this.#modules.get('./data.js') || this.#modules.get('./data/index.js')!
const data = this.getData()
await writeTextFile(path.join(distDir, `data.${hash.slice(0, hashShort)}.js`), `export default ${JSON.stringify(data)}`)
}
const { ssr } = this.config
if (ssr) {
for (const pathname of this.#pageModules.keys()) {
const [_, html] = await this.getPageHtml({ pathname })
const htmlFile = path.join(outputDir, pathname, 'index.html')
await writeTextFile(htmlFile, html)
}
const fallback = path.join(outputDir, util.isPlainObject(ssr) && ssr.fallback ? ssr.fallback : '404.html')
await writeTextFile(fallback, this.getDefaultIndexHtml())
} else {
await writeTextFile(path.join(outputDir, 'index.html'), this.getDefaultIndexHtml())
}
log.info(`Done in ${Math.round(performance.now() - start)}ms`)
}
private async _loadConfig() {
const { ALEPH_IMPORT_MAP } = globalThis as any
if (ALEPH_IMPORT_MAP) {
const { imports } = ALEPH_IMPORT_MAP
Object.assign(this.config.importMap, { imports: Object.assign({}, this.config.importMap.imports, imports) })
}
const importMapFile = path.join(this.rootDir, 'import_map.json')
if (util.existsFile(importMapFile)) {
const { imports } = JSON.parse(await Deno.readTextFile(importMapFile))
Object.assign(this.config.importMap, { imports: Object.assign({}, this.config.importMap.imports, imports) })
}
const config: Record<string, any> = {}
for await (const { path: p } of walk(this.srcDir, { includeDirs: false, exts: ['.js', '.mjs', '.ts', '.json'], skip: [/\.d\.ts$/i], maxDepth: 1 })) {
const name = path.basename(p)
if (name.split('.')[0] === 'config') {
if (name.endsWith('.json')) {
try {
const conf = JSON.parse(await Deno.readTextFile(p))
Object.assign(config, conf)
log.debug(name, config)
} catch (e) {
log.fatal('parse config.json:', e.message)
}
} else {
const { default: conf } = await import("file://" + p)
if (util.isPlainObject(conf)) {
Object.assign(config, conf)
log.debug(name, config)
}
}
}
}
const {
srcDir,
ouputDir,
baseUrl,
ssr,
buildTarget,
sourceMap,
defaultLocale
} = config
if (util.isNEString(srcDir)) {
Object.assign(this.config, { srcDir: util.cleanPath(srcDir) })
}
if (util.isNEString(ouputDir)) {
Object.assign(this.config, { ouputDir: util.cleanPath(ouputDir) })
}
if (util.isNEString(baseUrl)) {
Object.assign(this.config, { baseUrl: util.cleanPath(encodeURI(baseUrl)) })
}
if (util.isNEString(defaultLocale)) {
Object.assign(this.config, { defaultLocale })
}
if (typeof ssr === 'boolean') {
Object.assign(this.config, { ssr })
} else if (util.isPlainObject(ssr)) {
const fallback = util.isNEString(ssr.fallback) ? ssr.fallback : '404.html'
const include = util.isArray(ssr.include) ? ssr.include : []
const exclude = util.isArray(ssr.exclude) ? ssr.exclude : []
Object.assign(this.config, { ssr: { fallback, include, exclude } })
}
if (/^es(20\d{2}|next)$/i.test(buildTarget)) {
Object.assign(this.config, { buildTarget: buildTarget.toLowerCase() })
}
if (typeof sourceMap === 'boolean') {
Object.assign(this.config, { sourceMap })
}
}
private async _init() {
const walkOptions = { includeDirs: false, exts: ['.js', '.jsx', '.mjs', '.ts', '.tsx'], skip: [/\.d\.ts$/i] }
const dataDir = path.join(this.srcDir, 'data')
const apiDir = path.join(this.srcDir, 'api')
const pagesDir = path.join(this.srcDir, 'pages')
if (!(util.existsDir(pagesDir))) {
log.fatal(`'pages' directory not found.`)
}
Object.assign(globalThis, {
ALEPH_ENV: {
appDir: this.rootDir,
},
document: new Document(),
innerWidth: 1920,
innerHeight: 1080,
devicePixelRatio: 1,
$RefreshReg$: () => { },
$RefreshSig$: () => (type: any) => type,
})
for await (const { path: p, isDirectory, isFile } of walk(this.srcDir, { maxDepth: 1 })) {
const name = path.basename(p)
if (isDirectory && p !== this.srcDir) {
switch (name) {
case 'api':
for await (const { path: p } of walk(apiDir, walkOptions)) {
const rp = path.resolve(util.trimPrefix(p, apiDir))
await this._compile('./api/' + rp)
}
break
case 'data':
for await (const { path: p } of walk(dataDir, { ...walkOptions, maxDepth: 1 })) {
const name = path.basename(p)
if (name.replace(reModuleExt, '') === 'index') {
await this._compile('./data/' + name)
}
}
break
}
} else if (isFile && reModuleExt.test(name)) {
switch (name.replace(reModuleExt, '')) {
case 'app':
case 'data':
case '404':
await this._compile('./' + name)
break
}
}
}
for await (const { path: p } of walk(pagesDir, walkOptions)) {
const rp = path.resolve(util.trimPrefix(p, pagesDir)) || '/'
const pagePath = rp.replace(reModuleExt, '').replace(/\s+/g, '-').replace(/\/?index$/i, '/')
this.#pageModules.set(pagePath, {
moduleId: './pages' + rp.replace(reModuleExt, '') + '.js',
rendered: new Map()
})
await this._compile('./pages' + rp)
}
const preCompileUrls = [
'https://deno.land/x/aleph/bootstrap.ts',
'https://deno.land/x/aleph/renderer.ts',
'https://deno.land/x/aleph/vendor/tslib/tslib.js',
]
if (this.isDev) {
preCompileUrls.push('https://deno.land/x/aleph/hmr.ts')
}
for (const url of preCompileUrls) {
await this._compile(url)
}
await this._createMainModule()
log.info(colors.bold('Pages'))
for (const path of this.#pageModules.keys()) {
const isIndex = path == '/'
log.info('○', path, isIndex ? colors.dim('(index)') : '')
}
for (const path of this.apiPaths) {
log.info('λ', path)
}
if (this.isDev) {
this._watch()
}
}
private async _watch() {
const w = Deno.watchFs(this.srcDir, { recursive: true })
log.info('Start watching code changes...')
for await (const event of w) {
for (const p of event.paths) {
const path = util.trimPrefix(util.trimPrefix(p, this.rootDir), '/')
const validated = (() => {
if (!reModuleExt.test(path) && !reStyleModuleExt.test(path)) {
return false
}
// ignore '.aleph' and outputDir directories
if (path.startsWith('.aleph/') || path.startsWith(this.config.outputDir.slice(1))) {
return false
}
const moduleId = './' + path.replace(reModuleExt, '.js')
switch (moduleId) {
case './404.js':
case './app.js':
case './data.js':
case './data/index.js': {
return true
}
default: {
if ((moduleId.startsWith('./pages/') || moduleId.startsWith('./api/')) && moduleId.endsWith('.js')) {
return true
}
let isDep = false
for (const { deps } of this.#modules.values()) {
if (deps.findIndex(dep => dep.url === './' + path) > -1) {
isDep = true
break
}
}
return isDep
}
}
})()
if (validated) {
const moduleId = './' + path.replace(reModuleExt, '.js')
util.debounceX(moduleId, () => {
const removed = !util.existsFile(p)
const cleanup = () => {
if (moduleId === './app.js' || moduleId === './data.js' || moduleId === './data/index.js') {
this._clearPageRenderCache()
} else if (moduleId.startsWith('./pages/')) {
if (removed) {
this._removePageModule(moduleId)
} else {
this._clearPageRenderCache(moduleId)
}
}
this._createMainModule()
}
if (!removed) {
let type = 'modify'
if (!this.#modules.has(moduleId)) {
type = 'add'
}
log.info(type, './' + path)
this._compile('./' + path, { forceCompile: true }).then(({ hash }) => {
const hmrable = this.isHMRable(moduleId)
if (hmrable) {
if (type === 'add') {
this.#fsWatchListeners.forEach(e => e.emit('add', moduleId, hash))
} else {
this.#fsWatchListeners.forEach(e => e.emit('modify-' + moduleId, hash))
}
}
cleanup()
this._updateDependency('./' + path, hash, mod => {
if (!hmrable && this.isHMRable(mod.id)) {
this.#fsWatchListeners.forEach(e => e.emit(mod.id, 'modify', mod.hash))
}
if (mod.id.startsWith('./pages/')) {
this._clearPageRenderCache(mod.id)
}
})
})
} else if (this.#modules.has(moduleId)) {
this.#modules.delete(moduleId)
cleanup()
if (this.isHMRable(moduleId)) {
this.#fsWatchListeners.forEach(e => e.emit('remove', moduleId))
}
log.info('remove', './' + path)
}
}, 150)
}
}
}
}
private _removePageModule(moduleId: string) {
let pagePath = ''
for (const [p, pm] of this.#pageModules.entries()) {
if (pm.moduleId === moduleId) {
pagePath = p
break
}
}
if (pagePath !== '') {
this.#pageModules.delete(pagePath)
}
}
private _clearPageRenderCache(moduleId?: string) {
for (const [_, p] of this.#pageModules.entries()) {
if (moduleId === undefined || p.moduleId === moduleId) {
p.rendered.clear()
break
}
}
}
private _newModule(url: string): Module {
const { importMap } = this.config
const isRemote = reHttp.test(url) || (url in importMap.imports && reHttp.test(importMap.imports[url]))
const sourceFilePath = renameImportUrl(url)
const id = (isRemote ? '//' + util.trimPrefix(sourceFilePath, '/-/') : '.' + sourceFilePath).replace(reModuleExt, '.js')
return {
id,
url,
isRemote,
sourceFilePath,
sourceType: path.extname(sourceFilePath).slice(1).replace('mjs', 'js') || 'js',
sourceHash: '',
deps: [],
jsFile: '',
jsContent: '',
jsSourceMap: '',
hash: '',
} as Module
}
private async _createMainModule(): Promise<Module> {
const { baseUrl, defaultLocale } = this.config
const config: Record<string, any> = {
baseUrl,
defaultLocale,
locales: {},
keyModules: {},
pageModules: {}
}
const module = this._newModule('./main.js')
const deps = [
'https://deno.land/x/aleph/vendor/tslib/tslib.js',
'https://deno.land/x/aleph/app.ts',
this.isDev && 'https://deno.land/x/aleph/hmr.ts'
].filter(Boolean).map(url => ({
url: String(url),
hash: this.#modules.get(String(url).replace(reHttp, '//').replace(reModuleExt, '.js'))?.hash || ''
}))
if (this.#modules.has('./data.js') || this.#modules.has('./data/index.js')) {
const { id, url, hash } = this.#modules.get('./data.js') || this.#modules.get('./data/index.js')!
config.keyModules.data = {
moduleId: id,
hash
}
deps.push({ url, hash })
}
if (this.#modules.has('./app.js')) {
const { url, hash } = this.#modules.get('./app.js')!
config.keyModules.app = {
moduleId: './app.js',
hash
}
deps.push({ url, hash })
}
if (this.#modules.has('./404.js')) {
const { url, hash } = this.#modules.get('./404.js')!
config.keyModules['404'] = {
moduleId: './404.js',
hash
}
deps.push({ url, hash })
}
this.#pageModules.forEach(({ moduleId }, pagePath) => {
const { url, hash } = this.#modules.get(moduleId)!
const mod = { moduleId, hash }
config.pageModules[pagePath] = mod
deps.push({ url, hash })
})
module.jsContent = [
this.isDev && 'import "./-/deno.land/x/aleph/hmr.js";',
'import "./-/deno.land/x/aleph/vendor/tslib/tslib.js";',
'import bootstrap from "./-/deno.land/x/aleph/bootstrap.js";',
`bootstrap(${JSON.stringify(config, undefined, this.isDev ? 4 : undefined)});`
].filter(Boolean).join(this.isDev ? '\n' : '')
module.hash = (new Sha1()).update(module.jsContent).hex()
module.jsFile = path.join(this.buildDir, `main.${module.hash.slice(0, hashShort)}.js`)
module.deps = deps
await Promise.all([
writeTextFile(module.jsFile, module.jsContent),
writeTextFile(path.join(this.buildDir, 'main.meta.json'), JSON.stringify({
url: './main.js',
sourceHash: module.hash,
hash: module.hash,
deps: module.deps,
}, undefined, 4))
])
this.#modules.set(module.id, module)
return module
}
private async _compile(url: string, options?: { sourceCode?: string, implicitDeps?: { url: string, hash: string }[], forceCompile?: boolean }) {
const mod = this._newModule(url)
if (this.#modules.has(mod.id) && !options?.forceCompile) {
return this.#modules.get(mod.id)!
}
const { importMap } = this.config
const name = path.basename(mod.sourceFilePath).replace(reModuleExt, '')
const saveDir = path.join(this.buildDir, path.dirname(mod.sourceFilePath))
const metaFile = path.join(saveDir, `${name}.meta.json`)
if (util.existsFile(metaFile)) {
const { sourceHash, hash, deps } = JSON.parse(await Deno.readTextFile(metaFile))
const jsFile = path.join(saveDir, name + (mod.isRemote ? '' : '.' + hash.slice(0, hashShort))) + '.js'
if (util.isNEString(sourceHash) && util.isNEString(hash) && util.isArray(deps) && util.existsFile(jsFile)) {
try {
mod.jsContent = await Deno.readTextFile(jsFile)
if (util.existsFile(jsFile + '.map')) {
mod.jsSourceMap = await Deno.readTextFile(jsFile + '.map')
}
mod.jsFile = jsFile
mod.hash = hash
mod.deps = deps
mod.sourceHash = sourceHash
} catch (e) { }
}
}
let sourceContent = ''
let emptyContent = false
if (options?.sourceCode) {
const sourceHash = (new Sha1()).update(options.sourceCode).hex()
if (mod.sourceHash === '' || mod.sourceHash !== sourceHash) {
sourceContent = options.sourceCode
mod.sourceHash = sourceHash
}
} else if (mod.isRemote) {
let dlUrl = url
for (const importPath in importMap.imports) {
const alias = importMap.imports[importPath]
if (importPath === url) {
dlUrl = alias
break
} else if (importPath.endsWith('/') && url.startsWith(importPath)) {
dlUrl = util.trimSuffix(alias, '/') + '/' + util.trimPrefix(url, importPath)
break
}
}
if (dlUrl.startsWith('https://esm.sh/[')) {
dlUrl.replace(/\[([^\]]+)\]/, (_, s: string) => {
const list = s.split(',').map(s => s.trim())
if (list.length > 0) {
const mod = util.trimPrefix(url, 'https://esm.sh/').replace(/\/+$/, '')
if (!list.includes(mod)) {
dlUrl = url
}
}
return _
})
}
if (url.startsWith('https://esm.sh/')) {
const u = new URL(dlUrl)
u.searchParams.set('target', this.config.buildTarget)
if (this.isDev && !u.searchParams.has('dev')) {
u.searchParams.set('dev', '')
}
dlUrl = u.toString().replace(/=(&|$)/, '$1')
}
if (mod.sourceHash === '') {
log.info('Download', url, dlUrl != url ? colors.dim(`• ${dlUrl}`) : '')
try {
const resp = await fetch(dlUrl)
if (resp.status != 200) {
throw new Error(`${resp.status} - ${resp.statusText}`)
}
sourceContent = await resp.text()
mod.sourceHash = (new Sha1()).update(sourceContent).hex()
if (mod.sourceType === 'js') {
const t = resp.headers.get('Content-Type')
if (t?.startsWith('text/typescript')) {
mod.sourceType = 'ts'
} else if (t?.startsWith('text/jsx')) {
mod.sourceType = 'jsx'
}
}
} catch (err) {
throw new Error(`Download ${url}: ${err.message}`)
}
} else if (/^https?:\/\/(localhost|127.0.0.1)(:\d+)?\//.test(dlUrl)) {
try {
const resp = await fetch(dlUrl)
if (resp.status != 200) {
throw new Error(`${resp.status} - ${resp.statusText}`)
}
const text = await resp.text()
const sourceHash = (new Sha1()).update(text).hex()
if (mod.sourceHash !== sourceHash) {
sourceContent = text
mod.sourceHash = sourceHash
}
} catch (err) {
throw new Error(`Download ${url}: ${err.message}`)
}
}
} else {
const filepath = path.join(this.srcDir, url)
try {
const fileinfo = await Deno.stat(filepath)
// 10mb limit
if (fileinfo.size > 10 * (1 << 20)) {
throw new Error(`ignored module '${url}': too large(${(fileinfo.size / (1 << 20)).toFixed(2)}mb)`)
}
} catch (err) {
if (err instanceof Deno.errors.NotFound) {
throw new Error(`module '${url}' not found`)
}
}
const text = await Deno.readTextFile(filepath)
const sourceHash = (new Sha1()).update(text).hex()
if (mod.sourceHash === '' || mod.sourceHash !== sourceHash) {
sourceContent = text
emptyContent = text === ''
mod.sourceHash = sourceHash
}
}
let fsync = false
// compile source code
if (sourceContent != '' || emptyContent) {
const t = performance.now()
mod.deps = options?.implicitDeps || []
if (mod.sourceType === 'css' || mod.sourceType === 'less') {
let css: string = sourceContent
if (mod.sourceType === 'less') {
try {
// todo: sourceMap
const output = await less.render(sourceContent || '/* empty content */')
css = output.css
} catch (error) {
throw new Error(`less: ${error}`);
}
}
if (this.isDev) {
css = String(css).trim()
} else {
const output = cleanCSS.minify(css)
css = output.styles
}
const hash = (new Sha1).update(css).hex()
const filepath = path.join(
path.dirname(mod.sourceFilePath),
util.trimSuffix(path.basename(mod.sourceFilePath), '.css') + '.' + hash.slice(0, hashShort) + '.css'
)
const asLink = css.length > 1024
if (asLink) {
await writeTextFile(path.join(this.buildDir, filepath), css)
}
mod.jsContent = [
`import { applyCSS } from ${JSON.stringify(relativePath(
path.dirname(path.resolve('/', mod.url)),
'/-/deno.land/x/aleph/head.js'
))};`,
`applyCSS(${JSON.stringify(url)}, ${asLink ? JSON.stringify(path.join(this.config.baseUrl, '_aleph', filepath)) + ', true' : JSON.stringify(this.isDev ? `\n${css}\n` : css)});`,
].join(this.isDev ? '\n' : '')
mod.hash = hash
mod.jsSourceMap = ''
} else {
const compileOptions = {
target: this.config.buildTarget,
mode: this.mode,
reactRefresh: this.isDev && !mod.isRemote && (mod.id === './404.js' || mod.id === './app.js' || mod.id.startsWith('./pages/') || mod.id.startsWith('./components/')),
rewriteImportPath: (path: string) => this._rewriteImportPath(mod, path),
}
const { diagnostics, outputText, sourceMapText } = compile(mod.sourceFilePath, sourceContent, compileOptions)
if (diagnostics && diagnostics.length > 0) {
throw new Error(`compile ${url}: ${diagnostics.map(d => d.messageText).join(' ')}`)
}
const jsContent = outputText.replace(/import([^'"]*)("|')tslib("|')(\)|;)?/g, 'import$1' + JSON.stringify(relativePath(
path.dirname(mod.sourceFilePath),
'/-/deno.land/x/aleph/vendor/tslib/tslib.js'
)) + '$4')
if (this.isDev) {
mod.jsContent = jsContent
mod.jsSourceMap = sourceMapText!
} else {
const { code, map } = await minify(jsContent, {
compress: false,
mangle: true,
sourceMap: {
content: sourceMapText!,
}
})
if (code) {
mod.jsContent = code
} else {
mod.jsContent = jsContent
}
if (util.isNEString(map)) {
mod.jsSourceMap = map
}
}
mod.hash = (new Sha1).update(mod.jsContent).hex()
}
log.debug(`${url} compiled in ${(performance.now() - t).toFixed(3)}ms`)
if (!fsync) {
fsync = true
}
}
this.#modules.set(mod.id, mod)
// compile deps
for (const dep of mod.deps) {
const depMod = await this._compile(dep.url)
if (dep.hash !== depMod.hash) {
dep.hash = depMod.hash
if (!reHttp.test(dep.url)) {
const depImportPath = relativePath(
path.dirname(path.resolve('/', url)),
path.resolve('/', dep.url.replace(reModuleExt, ''))
)
mod.jsContent = mod.jsContent.replace(/(import|export)([^'"]*)("|')([^'"]+)("|')(\)|;)?/g, (s, key, from, ql, importPath, qr, end) => {
if (
reHashJs.test(importPath) &&
importPath.slice(0, importPath.length - (hashShort + 4)) === depImportPath
) {
return `${key}${from}${ql}${depImportPath}.${dep.hash.slice(0, hashShort)}.js${qr}${end}`
}
return s
})
mod.hash = (new Sha1).update(mod.jsContent).hex()
}
if (!fsync) {
fsync = true
}
}
}
if (fsync) {
mod.jsFile = path.join(saveDir, name + (mod.isRemote ? '' : `.${mod.hash.slice(0, hashShort)}`)) + '.js'
await Promise.all([
writeTextFile(metaFile, JSON.stringify({
url,
sourceHash: mod.sourceHash,
hash: mod.hash,
deps: mod.deps,
}, undefined, 4)),
writeTextFile(mod.jsFile, mod.jsContent),
mod.jsSourceMap !== '' ? writeTextFile(mod.jsFile + '.map', mod.jsSourceMap) : Promise.resolve()
])
}
return mod
}
private _updateDependency(depPath: string, depHash: string, callback: (mod: Module) => void, trace?: Set<string>) {
trace = trace || new Set()
this.#modules.forEach(mod => {
mod.deps.forEach(dep => {
if (dep.url === depPath && dep.hash !== depHash && !trace?.has(mod.id)) {
const depImportPath = relativePath(
path.dirname(path.resolve('/', mod.url)),
path.resolve('/', dep.url.replace(reModuleExt, ''))
)
dep.hash = depHash
if (mod.id === './main.js') {
this._createMainModule()
} else {
mod.jsContent = mod.jsContent.replace(/(import|export)([^'"]*)("|')([^'"]+)("|')(\)|;)?/g, (s, key, from, ql, importPath, qr, end) => {
if (
reHashJs.test(importPath) &&
importPath.slice(0, importPath.length - (hashShort + 4)) === depImportPath
) {
return `${key}${from}${ql}${depImportPath}.${dep.hash.slice(0, hashShort)}.js${qr}${end}`
}
return s
})
mod.hash = (new Sha1).update(mod.jsContent).hex()
mod.jsFile = `${mod.jsFile.replace(reHashJs, '')}.${mod.hash.slice(0, hashShort)}.js`
Promise.all([
writeTextFile(mod.jsFile.replace(reHashJs, '') + '.meta.json', JSON.stringify({
sourceFile: mod.url,
sourceHash: mod.sourceHash,
hash: mod.hash,
deps: mod.deps,
}, undefined, 4)),
writeTextFile(mod.jsFile, mod.jsContent),
mod.jsSourceMap !== '' ? writeTextFile(mod.jsFile + '.map', mod.jsSourceMap) : Promise.resolve()
])
}
callback(mod)
trace?.add(mod.id)
this._updateDependency(mod.url, mod.hash, callback, trace)
log.debug('update dependency:', depPath, '->', mod.url)
}
})
})
}
private _rewriteImportPath(mod: Module, importPath: string): string {
const { importMap } = this.config
let rewrittenPath: string
if (importPath in importMap.imports) {
importPath = importMap.imports[importPath]
}
if (reHttp.test(importPath)) {
if (mod.isRemote) {
rewrittenPath = relativePath(
path.dirname(path.resolve('/', mod.url.replace(reHttp, '-/').replace(/:(\d+)/, '/$1'))),
renameImportUrl(importPath)
)
} else {
rewrittenPath = relativePath(
path.dirname(path.resolve('/', mod.url)),
renameImportUrl(importPath)