monorepo

Script Commands

Reference Repositories

• jsrepo — Package distribution for monorepos
• WXT — Browser extension framework (used by tab-manager app)

The monorepo uses consistent script naming conventions:

When to Apply This Skill

Use this pattern when you need to:

• Run formatting, linting, or type-check scripts in this monorepo.
• Choose between auto-fix commands and :check CI-only variants.
• Verify final changes with the repo-standard bun typecheck workflow.
• Scaffold a new package in packages/.

Command	Purpose	When to use
bun format	Fix formatting (biome)	Development
bun format:check	Check formatting	CI
bun lint	Fix lint issues (biome)	Development
bun lint:check	Check lint issues	CI
bun typecheck	Type checking (tsc, svelte-check, astro check)	Both

Convention

• No suffix = fix (modifies files)
• :check suffix = check only (for CI, no modifications)
• typecheck alone = type checking (separate concern, cannot auto-fix)

After Completing Code Changes

Run type checking to verify:

bun typecheck

This runs turbo run typecheck which executes the typecheck script in each package (e.g., tsc --noEmit, svelte-check).

New Package Boilerplate

When creating a new package in packages/, follow this exact structure.

package.json

{
  "name": "@epicenter/<package-name>",
  "version": "0.0.1",
  "main": "./src/index.ts",
  "types": "./src/index.ts",
  "exports": {
    ".": "./src/index.ts"
  },
  "license": "MIT",
  "scripts": {
    "typecheck": "tsc --noEmit"
  },
  "dependencies": {},
  "devDependencies": {
    "@types/bun": "catalog:",
    "typescript": "catalog:"
  }
}

Key conventions:

• main and types both point to ./src/index.ts (no build step—consumers import source directly).
• Use "workspace:*" for internal deps (e.g., "@epicenter/workspace": "workspace:*").
• Use "catalog:" for shared versions managed in the root package.json catalogs.
• peerDependencies for packages consumers must also install (e.g., yjs).

tsconfig.json

{
  "extends": "../../tsconfig.base.json",
  "compilerOptions": {
    "module": "preserve",
    "noUnusedLocals": true,
    "noUnusedParameters": true,
    "noPropertyAccessFromIndexSignature": false
  }
}

After creating the package, run bun install from the repo root to register it in the workspace.