pkg-types

Node.js utilities and TypeScript definitions for package.json, tsconfig.json, and other configuration files.

Install

# ✨ Auto-detect
npx nypm install pkg-types

# npm
npm install pkg-types

# yarn
yarn add pkg-types

# pnpm
pnpm add pkg-types

# bun
bun install pkg-types

# deno
deno install npm:pkg-types

Usage

Package Configuration

readPackage

Reads any package file format (package.json, package.json5, or package.yaml) with automatic format detection.

import { readPackage } from "pkg-types";
const localPackage = await readPackage();
// or
const pkg = await readPackage("/fully/resolved/path/to/folder");

writePackage

Writes package data with format detection based on file extension.

import { writePackage } from "pkg-types";

await writePackage("path/to/package.json", pkg);
await writePackage("path/to/package.json5", pkg);
await writePackage("path/to/package.yaml", pkg);

findPackage

Finds the nearest package file (package.json, package.json5, or package.yaml).

import { findPackage } from "pkg-types";
const filename = await findPackage();
// or
const filename = await findPackage("/fully/resolved/path/to/folder");

readPackageJSON

import { readPackageJSON } from "pkg-types";
const localPackageJson = await readPackageJSON();
// or
const packageJson = await readPackageJSON("/fully/resolved/path/to/folder");

writePackageJSON

import { writePackageJSON } from "pkg-types";

await writePackageJSON("path/to/package.json", pkg);

resolvePackageJSON

import { resolvePackageJSON } from "pkg-types";
const filename = await resolvePackageJSON();
// or
const packageJson = await resolvePackageJSON("/fully/resolved/path/to/folder");

updatePackage

Reads a package file and passes a proxied PackageJson to a callback (the callback may mutate it in-place or return a new object). The updated package is then written back using the same file format (.json/.json5/.yaml). The proxy auto-creates common map fields (e.g. scripts, dependencies) when accessed.

import { updatePackage } from "pkg-types";

await updatePackage("path/to/package", (pkg) => {
  pkg.version = "1.0.1";
  pkg.dependencies.lodash = "^4.17.21";
});

sortPackage

Returns a new PackageJson that reorders known top-level fields according to the convention and alphabetically sorts certain nested maps (like dependencies, devDependencies, optionalDependencies, peerDependencies and scripts). Unknown top-level keys retain their original relative order. The input object is not mutated.

import { sortPackage } from "pkg-types";

const sorted = sortPackage(pkg);

normalizePackage

Normalizes a PackageJson for stable output: sorts top-level fields and dependency maps, and removes dependency fields (dependencies, devDependencies, optionalDependencies, peerDependencies) if they are not plain objects. Returns a new normalized object.

import { normalizePackage } from "pkg-types";

const normalized = normalizePackage(pkg);

TypeScript Configuration

readTSConfig

import { readTSConfig } from "pkg-types";
const tsconfig = await readTSConfig();
// or
const tsconfig2 = await readTSConfig("/fully/resolved/path/to/folder");

writeTSConfig

import { writeTSConfig } from "pkg-types";

await writeTSConfig("path/to/tsconfig.json", tsconfig);

resolveTSConfig

import { resolveTSConfig } from "pkg-types";
const filename = await resolveTSConfig();
// or
const tsconfig = await resolveTSConfig("/fully/resolved/path/to/folder");

File Resolution

findFile

import { findFile } from "pkg-types";
const filename = await findFile("README.md", {
  startingFrom: id,
  rootPattern: /^node_modules$/,
  test: (filename) => filename.endsWith(".md"),
});

findNearestFile

import { findNearestFile } from "pkg-types";
const filename = await findNearestFile("package.json");

findFarthestFile

import { findFarthestFile } from "pkg-types";
const filename = await findFarthestFile("package.json");

resolveLockfile

Find path to the lock file (yarn.lock, package-lock.json, pnpm-lock.yaml, npm-shrinkwrap.json, bun.lockb, bun.lock, deno.lock) or throws an error.

import { resolveLockfile } from "pkg-types";
const lockfile = await resolveLockfile(".");

findWorkspaceDir

Try to detect workspace dir by in order:

1. Farthest workspace file (pnpm-workspace.yaml, lerna.json, turbo.json, rush.json, deno.json, deno.jsonc)
2. Closest .git/config file
3. Farthest lockfile
4. Farthest package.json file

If fails, throws an error.

import { findWorkspaceDir } from "pkg-types";
const workspaceDir = await findWorkspaceDir(".");

Git Configuration

resolveGitConfig

Finds closest .git/config file.

import { resolveGitConfig } from "pkg-types";

const gitConfig = await resolveGitConfig(".");

readGitConfig

Finds and reads closest .git/config file into a JS object.

import { readGitConfig } from "pkg-types";

const gitConfigObj = await readGitConfig(".");

writeGitConfig

Stringifies git config object into INI text format and writes it to a file.

import { writeGitConfig } from "pkg-types";

await writeGitConfig(".git/config", gitConfigObj);

parseGitConfig

Parses a git config file in INI text format into a JavaScript object.

import { parseGitConfig } from "pkg-types";

const gitConfigObj = parseGitConfig(gitConfigINI);

stringifyGitConfig

Stringifies a git config object into a git config file INI text format.

import { stringifyGitConfig } from "pkg-types";

const gitConfigINI = stringifyGitConfig(gitConfigObj);

Types

• Note: In order to make types work, you need to install typescript as a devDependency.

You can directly use typed interfaces:

import type { TSConfig, PackageJson, GitConfig } from "pkg-types";

Define Utilities

You can use define utilities for type support and auto-completion when working in plain .js files. These functions simply return the input object but provide TypeScript type hints.

definePackageJSON

Provides type safety and auto-completion for package.json objects.

import { definePackageJSON } from "pkg-types";

const pkg = definePackageJSON({
  name: "my-package",
  version: "1.0.0",
  // TypeScript will provide auto-completion here
});

defineTSConfig

Provides type safety and auto-completion for tsconfig.json objects.

import { defineTSConfig } from "pkg-types";

const tsconfig = defineTSConfig({
  compilerOptions: {
    target: "ES2020",
    // TypeScript will provide auto-completion here
  },
});

defineGitConfig

Provides type safety and auto-completion for git config objects.

import { defineGitConfig } from "pkg-types";

const gitConfig = defineGitConfig({
  user: {
    name: "John Doe",
    email: "[email protected]",
  },
  // TypeScript will provide auto-completion here
});

Alternatives

• dominikg/tsconfck

License

Published under the MIT license. Made by @pi0, @danielroe and community 💛