JSPM – package-build-stats@7.1.0

Package Exports

package-build-stats

This package does not declare an exports field, so the exports above have been automatically detected and optimized by JSPM instead. If any package subpath is missing, it is recommended to post an issue to the original package (package-build-stats) to support the "exports" field. If that is not possible, create a JSPM override to customize the exports field for this package.

Readme

This is the function that powers the core of building, minifying and gzipping of packages in bundlephobia.

Usage

const { getPackageStats } = require('package-build-stats')

Building packages from npm

Building the latest stable version

const results = await getPackageStats('moment')

Building a specific version / tag

const results = await getPackageStats('moment@2.24.0')

Building local packages (beta)

const results = await getPackageStats('~/dev/my-npm-package') // must have a package.json

Passing options to the build

const results = await getBuiltPackageStats('moment', options)

Options

Option	Values	Default	Description
client	`npm` or `yarn`	`npm`	Which client to use to install package for building
limitConcurrency	`true` or `false`	`false`	When using `yarn` as the client, use the network mutex to limit concurrency
networkConcurrency	`number`	`false`	When using `yarn` as client, limit simultaneous installs to this number.
customImports	`Array<string>`	`null`	By default, the default export is used for calculating sizes. Setting this option allows calculation of package stats based on more granular top-level exports.

Contributing

Clone this repo, run yarn install
To make it easier to test changes when develop, you can start an HTTP server that uses REST APIs to report size of packages.

To start the server, run –

yarn run start

The server runs at port 3000.

To build a package and get its build stats, run a curl request like so -

curl 'localhost:3000/size?p=<package-name>'

eg.

curl 'localhost:3000/size?p=react'

To build a package and get stats about exports that are exposed out of the package –

curl 'localhost:3000/exports?p=<package-name>'

To build a package and get stats about size of various exports that are exposed out of the package –

curl 'localhost:3000/export-sizes?p=<package-name>'