Ely Office: six offline-first desktop apps in Rust and GPUI

ElyDoc, ElyTable, ElyShow (LibreOfficeKit), ElyPDF (MuPDF), ElyTree (Git),
ElyMark (Milkdown and CodeMirror in CEF). ElyMail and ElyAgent follow.

apps/ely-mark/web/build.mjs

@@ -0,0 +1,89 @@
+// Builds the page into the folder given; no network.
+import { build } from 'esbuild'
+import { copyFile, mkdir, readFile, readdir, rm, writeFile } from 'node:fs/promises'
+import { join } from 'node:path'
+
+const out = process.argv[2]
+if (!out) throw new Error('usage: node build.mjs <output folder>')
+await rm(out, { recursive: true, force: true })
+await mkdir(out, { recursive: true })
+
+const built = await build({
+  entryPoints: ['src/main.js', 'src/diagram.js', 'src/main.css'],
+  outdir: out,
+  bundle: true,
+  minify: true,
+  format: 'iife',
+  target: 'chrome140',
+  loader: { '.woff2': 'file', '.woff': 'file', '.ttf': 'file' },
+  assetNames: 'fonts/[name]-[hash]',
+  legalComments: 'none',
+  metafile: true,
+  logLevel: 'warning',
+})
+// Exports carry one stylesheet: fonts inline, woff2 alone.
+const exported = await build({
+  entryPoints: ['src/export.css'],
+  outdir: out,
+  bundle: true,
+  minify: true,
+  loader: { '.woff2': 'dataurl', '.woff': 'empty', '.ttf': 'empty' },
+  legalComments: 'none',
+  metafile: true,
+  logLevel: 'warning',
+})
+const sheet = join(out, 'export.css')
+// The dropped woff and ttf left empty sources.
+await writeFile(sheet, (await readFile(sheet, 'utf8')).replace(/,url\(\) format\("(?:woff|truetype)"\)/g, ''))
+await copyFile('index.html', join(out, 'index.html'))
+
+/** Each bundled package's folder under node_modules. */
+function packages(inputs) {
+  const found = new Set()
+  for (const input of inputs) {
+    const at = input.lastIndexOf('node_modules/')
+    if (at < 0) continue
+    const parts = input.slice(at + 13).split('/')
+    const name = parts[0].startsWith('@') ? `${parts[0]}/${parts[1]}` : parts[0]
+    found.add(input.slice(0, at + 13) + name)
+  }
+  return [...found].sort()
+}
+
+/** Name, version and license; the file, else the manifest's. */
+async function notice(folder) {
+  const manifest = JSON.parse(await readFile(join(folder, 'package.json'), 'utf8'))
+  const head = `${manifest.name} ${manifest.version} (${manifest.license})`
+  const file = (await readdir(folder)).find((name) => /^(licen[cs]e|copying)/i.test(name))
+  if (file) return `${head}\n\n${(await readFile(join(folder, file), 'utf8')).trim()}\n`
+  const author = manifest.author?.name ?? manifest.author
+  if (manifest.license !== 'MIT' || !author) throw new Error(`${manifest.name}: no license file`)
+  console.log(`${manifest.name} ships no license file; MIT from its manifest`)
+  return `${head}\n\nCopyright (c) ${author}\n\n${MIT}\n`
+}
+
+const MIT = `Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.`
+
+const folders = packages([
+  ...Object.keys(built.metafile.inputs),
+  ...Object.keys(exported.metafile.inputs),
+])
+const notices = await Promise.all(folders.map(notice))
+await writeFile(join(out, 'THIRD-PARTY-NOTICES.txt'), notices.join('\n' + '-'.repeat(72) + '\n\n'))
+console.log(`built ${folders.length} packages into ${out}`)