Install

Requirements

• Node.js ≥ 20
• pnpm (recommended) or npm/yarn for installing the package
• A git repo with a TypeScript SDK barrel (index.ts re-exports)

npm package names

npm package	Role
@expgov/cli	CLI binary (expgov command) + @expgov/cli/core config types
@expgov/core	SDK only — runExports* APIs without the CLI binary

The command is always expgov (from the bin field). Only the npm package name is scoped.

Why not unscoped expgov?

npm rejected publishing the unscoped name expgov as too similar to the existing package expo (React Native tooling). That is a registry policy — not a permissions issue. Owning the @expgov org does not reserve the global unscoped name.

We publish under the org scope instead:

• @expgov/core@1.0.0 — SDK engine
• @expgov/cli@1.0.0 — CLI (this is what you install for terminal use)

The CLI binary name stays expgov — only the install package name is @expgov/cli.

Add to a project

Install the CLI as a devDependency:

pnpm add -D @expgov/cli
# or: npm install -D @expgov/cli

Why -D?

expgov runs at dev/CI time to inventory, validate, and diff your barrel. It does not ship to npm consumers of your package.

The same tarball also exposes @expgov/cli/core — types and defineConfig for expgov.config.ts. You do not need a separate @expgov/core install just to author config.

Optional but recommended in expgov.config.ts:

import { defineConfig, type ExpgovConfig } from '@expgov/cli/core';

export default defineConfig({
  // ...
} satisfies ExpgovConfig);

defineConfig and ExpgovConfig are optional — a plain object export works at runtime. See Configuration.

Global CLI (optional)

pnpm add -g @expgov/cli
# or: npx expgov --help

SDK package (@expgov/core)

For scripts, CI, and libraries that call runExports* APIs directly — not needed for config or terminal use:

pnpm add -D @expgov/core

Install	Best for
@expgov/cli (devDep)	CLI + @expgov/cli/core config types
@expgov/core (devDep)	Programmatic governance without the CLI binary

See SDK overview for the host contract.

Try the example SDK (in this repo):

pnpm build
cd examples/sdk
expgov validate

See examples/sdk/README.md.

Scaffold config

From your SDK repo root:

expgov init

Creates expgov.config.ts with conservative tier defaults. expgov init scaffolds imports from @expgov/cli/core by default.

Flag	Role
-y, --yes	Write without prompts (CI / non-TTY)
-f, --force	Overwrite existing config
-r, --rich	Commented cache block and tiers.* exact/prefix examples to opt into

Run commands

expgov validate
expgov inventory
expgov diff HEAD

Point at another project root:

expgov -C /path/to/sdk validate

Override config path:

expgov --config ./tools/expgov.config.ts validate

Local development (this repo)

pnpm install
pnpm build
pnpm typecheck
node dist/cli.js validate
pnpm cli:dev -- validate

Cache

Snapshots are written to .expgov/cache/ (configurable via cache.dir). Add it to .gitignore — expgov prints a one-time tip when it detects a git repo without that entry.