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tynd.config.ts

Project config. Validated by valibot  — invalid shape fails fast with a clear error message listing every bad field.

tynd.config.ts
import type { TyndConfig } from "@tynd/cli";
 
export default {
  runtime:     "lite",
  backend:     "backend/main.ts",
  frontendDir: "dist",
  icon:        "public/favicon.svg",
} satisfies TyndConfig;

Window / menu / tray config lives in the backend, not in tynd.config.ts. Each spawned window can configure itself programmatically, so app.start({ window: {...}, menu: [...], tray: {...} }) is the authoritative place. See Backend API.

Top-level fields

FieldDefaultDescription
runtime"full""full" (Bun subprocess) or "lite" (embedded QuickJS)
backend"backend/main.ts"Backend entry file
frontendDir"frontend"Built frontend output directory
frontendEntry—Single TS/JS entry without a framework — auto-bundled
devUrlautoDev server URL override
devCommandautoDev server start command override
iconautoApp icon path (SVG / PNG / ICO)
binaryArgs—Extra args passed to the tynd-full / tynd-lite binary
protocols—Custom URL schemes to register (e.g. ["myapp"])
sidecars—Bundled binaries
bundle—Installer metadata + signing

sidecars

Binaries bundled inside your app.

sidecars: [
  { name: "ffmpeg.exe", path: "bin/ffmpeg.exe" },
  { name: "yt-dlp",     path: "bin/yt-dlp" },
]
  • name — resolved at runtime via sidecar.path(name).
  • path — relative to the project root at build time.

See the Sidecars guide.

protocols

Custom URL schemes registered by the installer.

protocols: ["myapp", "myapp-dev"]

Must match /^[a-zA-Z][a-zA-Z0-9+\-.]*$/. Reserved schemes are rejected at config-validation time:

http, https, file, ftp, mailto, javascript, data, about, blob, tynd, tynd-bin

See the Deep Linking guide.

bundle

Required only when using tynd build --bundle.

bundle: {
  identifier:        string,            // reverse-DNS (e.g. com.example.myapp), required
  displayName?:      string,            // shown in installers / menus
  categories?:       string[],          // XDG / Launch Services
  shortDescription?: string,
  longDescription?:  string,
  copyright?:        string,
 
  deb?: {
    depends?:   string[],
    section?:   string,                 // e.g. "utils"
    priority?:  string,                 // e.g. "optional"
  },
  rpm?: {
    license?:   string,                 // SPDX id, e.g. "MIT"
    requires?:  string[],
  },
  appimage?: { /* reserved — currently empty */ },
  nsis?: {
    installMode?: "currentUser" | "perMachine" | "both",   // default "currentUser"
  },
  msi?: {
    upgradeCode?: string,               // GUID — pin to enable in-place upgrades
  },
  sign?: { /* see below */ },
}

bundle.sign.windows

windows: {
  certificate:   string,     // path to .pfx / .p12, OR "cert:subject=..." for Windows cert store
  password?:     string,     // plain or "env:NAME" (recommended)
  timestampUrl?: string,     // default: http://timestamp.digicert.com
}

bundle.sign.macos

macos: {
  identity:      string,     // "Developer ID Application: Name (TEAMID)" or a SHA-1 hash
  entitlements?: string,     // path to an entitlements.plist
  notarize?: {
    appleId:   string,       // plain or "env:APPLE_ID"
    password:  string,       // app-specific password, plain or "env:NAME"
    teamId:    string,
  },
}

See the Code Signing guide.

env:NAME references

Any string field in bundle.sign.* can use env:NAME to read from process.env.NAME at build time. Missing env vars throw — no silent fallback to unsigned builds.

sign: {
  windows: {
    certificate: "./cert.pfx",
    password:    "env:WIN_CERT_PASSWORD",
  },
  macos: {
    notarize: {
      appleId:  "env:APPLE_ID",
      password: "env:APPLE_APP_PASSWORD",
      teamId:   "env:APPLE_TEAM_ID",
    },
  },
}

Icon

Auto-detected if icon is not set:

  1. public/{favicon,icon,logo}.svg
  2. public/{favicon,icon,logo}.{ico,png}
  3. assets/icon.{svg,png,ico}
  4. icon.{svg,png,ico}

Override via icon: "path/to/source.svg".

Single source renders per-format:

  • Windows ICO (16/32/48/256)
  • macOS ICNS (32/128/256/512/1024)
  • Linux hicolor PNG set (16/32/48/64/128/256/512)

PNG source degrades to single-size. ICO source passes through to Windows only.

See the Bundling guide.

Window / menu / tray

These live in the backend, not the config file:

backend/main.ts
import { app } from "@tynd/core";
 
app.start({
  window: {
    title:  "My App",
    width:  1200,
    height: 800,
    center: true,
  },
  menu: [ /* … */ ],
  tray: { /* … */ },
});

Rationale: each spawned window can define its own settings programmatically; a static config file can’t express that flexibility. See Backend API.

Validation

Run tynd validate to typecheck the config + confirm the Rust host binary is discoverable.

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