pkg-entry-points

Get all entry-points for an npm package. Supports the exports field to expand subpaths and condition combinations.

Install

npm install pkg-entry-points

Usage

To get all entry-points for a package located at ./node_modules/my-package:

import { getPackageEntryPoints } from 'pkg-entry-points'

const packageExports = await getPackageEntryPoints('./node_modules/my-package')

console.log(packageExports)

/*
{
    '.': [
        [conditions, internalPath],
    ],
    './entry-file': [
        [['types'], './dist/entry-file.d.ts'],
        [['import'], './dist/entry-file.mjs'],
        [['require'], './dist/entry-file.js'],
    ],
    ...,
}
*/

Example: vue - using exports conditions

Entry-points evaluated from the vue package:

{
    ".": [
        [["types"], "./dist/vue.d.ts"],
        [["require"], "./index.js"],
        [["import", "node"], "./index.mjs"],
        [["default", "import"], "./dist/vue.runtime.esm-bundler.js"]
    ],
    "./server-renderer": [
        [["types"], "./server-renderer/index.d.ts"],
        [["import"], "./server-renderer/index.mjs"],
        [["require"], "./server-renderer/index.js"]
    ],
    "./compiler-sfc": [
        [["types"], "./compiler-sfc/index.d.ts"],
        [["import"], "./compiler-sfc/index.mjs"],
        [["require"], "./compiler-sfc/index.js"]
    ],
    "./dist/vue.cjs.js": [
        [["default"], "./dist/vue.cjs.js"]
    ],
    "./dist/vue.cjs.prod.js": [
        [["default"], "./dist/vue.cjs.prod.js"]
    ],
    "./dist/vue.d.ts": [
        [["default"], "./dist/vue.d.ts"]
    ],
    "./dist/vue.esm-browser.js": [
        [["default"], "./dist/vue.esm-browser.js"]
    ],
    "./dist/vue.esm-browser.prod.js": [
        [["default"], "./dist/vue.esm-browser.prod.js"]
    ],
    "./dist/vue.esm-bundler.js": [
        [["default"], "./dist/vue.esm-bundler.js"]
    ],
    "./dist/vue.global.js": [
        [["default"], "./dist/vue.global.js"]
    ],
    "./dist/vue.global.prod.js": [
        [["default"], "./dist/vue.global.prod.js"]
    ],
    "./dist/vue.runtime.esm-browser.js": [
        [["default"], "./dist/vue.runtime.esm-browser.js"]
    ],
    "./dist/vue.runtime.esm-browser.prod.js": [
        [["default"], "./dist/vue.runtime.esm-browser.prod.js"]
    ],
    "./dist/vue.runtime.esm-bundler.js": [
        [["default"], "./dist/vue.runtime.esm-bundler.js"]
    ],
    "./dist/vue.runtime.global.js": [
        [["default"], "./dist/vue.runtime.global.js"]
    ],
    "./dist/vue.runtime.global.prod.js": [
        [["default"], "./dist/vue.runtime.global.prod.js"]
    ],
    "./package.json": [
        [["default"], "./package.json"]
    ],
    "./macros": [
        [["default"], "./macros.d.ts"]
    ],
    "./macros-global": [
        [["default"], "./macros-global.d.ts"]
    ],
    "./ref-macros": [
        [["default"], "./ref-macros.d.ts"]
    ]
}

Example: typescript - no exports (legacy main field, etc.)

Entry-points evaluated from the typescript package:

{
    "./lib/cancellationToken.js": [
        [["default"], "./lib/cancellationToken.js"]
    ],
    "./lib/cs/diagnosticMessages.generated.json": [
        [["default"], "./lib/cs/diagnosticMessages.generated.json"]
    ],
    "./lib/de/diagnosticMessages.generated.json": [
        [["default"], "./lib/de/diagnosticMessages.generated.json"]
    ],
    "./lib/es/diagnosticMessages.generated.json": [
        [["default"], "./lib/es/diagnosticMessages.generated.json"]
    ],
    "./lib/fr/diagnosticMessages.generated.json": [
        [["default"], "./lib/fr/diagnosticMessages.generated.json"]
    ],
    "./lib/it/diagnosticMessages.generated.json": [
        [["default"], "./lib/it/diagnosticMessages.generated.json"]
    ],
    "./lib/ja/diagnosticMessages.generated.json": [
        [["default"], "./lib/ja/diagnosticMessages.generated.json"]
    ],
    "./lib/ko/diagnosticMessages.generated.json": [
        [["default"], "./lib/ko/diagnosticMessages.generated.json"]
    ],
    "./lib/pl/diagnosticMessages.generated.json": [
        [["default"], "./lib/pl/diagnosticMessages.generated.json"]
    ],
    "./lib/pt-br/diagnosticMessages.generated.json": [
        [["default"], "./lib/pt-br/diagnosticMessages.generated.json"]
    ],
    "./lib/ru/diagnosticMessages.generated.json": [
        [["default"], "./lib/ru/diagnosticMessages.generated.json"]
    ],
    "./lib/tr/diagnosticMessages.generated.json": [
        [["default"], "./lib/tr/diagnosticMessages.generated.json"]
    ],
    "./lib/tsc.js": [
        [["default"], "./lib/tsc.js"]
    ],
    "./lib/tsserver.js": [
        [["default"], "./lib/tsserver.js"]
    ],
    "./lib/tsserverlibrary.js": [
        [["default"], "./lib/tsserverlibrary.js"]
    ],
    "./lib/typesMap.json": [
        [["default"], "./lib/typesMap.json"]
    ],
    "./lib/typescript.js": [
        [["default"], "./lib/typescript.js"]
    ],
    "./lib/typingsInstaller.js": [
        [["default"], "./lib/typingsInstaller.js"]
    ],
    "./lib/watchGuard.js": [
        [["default"], "./lib/watchGuard.js"]
    ],
    "./lib/zh-cn/diagnosticMessages.generated.json": [
        [["default"], "./lib/zh-cn/diagnosticMessages.generated.json"]
    ],
    "./lib/zh-tw/diagnosticMessages.generated.json": [
        [["default"], "./lib/zh-tw/diagnosticMessages.generated.json"]
    ],
    "./package.json": [
        [["default"], "./package.json"]
    ],
    ".": [
        [["default"], "./lib/typescript.js"]
    ]
}

API

getPackageEntryPoints(packagePath, fs?)

Returns: Promise<PackageEntryPoints>

Type definitions:

type PackageEntryPoints = {
    [subpath: string]: ConditionToPath[]
}

type ConditionToPath = [conditions: string[], internalPath: string]

Description

Returns all possible entry-points of an npm package.

If the package has a package.json#exports property, it will return an object where the keys are expanded subpaths and the values are arrays of tuples containing an array of possible import combinations paired with the internal file path it resolves to.

If the package does not have an exports property, it will return an object where the keys are the internal file paths, mapping to arrays of possible import combinations.

Parameters

• packagePath

  Type: string

  Required

  The path to the package to get the exports for.

• fs

  Type: typeof import('fs/promises')

  Optional

  Default: fs.promises

  The file-system to use. Defaults to Node.js's fs/promises module.

Sponsors

Related

resolve-pkg-maps

Utils to resolve package.json subpath & conditional exports/imports maps in resolvers.