npm

Documentation

Overview

Copyright 2016-2024, Pulumi Corporation.

Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at

http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License.

Index

• Variables
• func FindWorkspaceRoot(startingPath string) (string, error)
• func Install(ctx context.Context, dir string, production bool, stdout, stderr io.Writer) (string, error)
• func Pack(ctx context.Context, dir string, stderr io.Writer) ([]byte, error)
• type PackageManager
  • func ResolvePackageManager(pwd string) (PackageManager, error)

Variables

var ErrNotInWorkspace = errors.New("not in a workspace")

Functions

func FindWorkspaceRoot

func FindWorkspaceRoot(startingPath string) (string, error)

FindWorkspaceRoot determines if we are in a yarn/npm workspace setup and returns the root directory of the workspace. If the startingPath is not in a workspace, it returns ErrNotInWorkspace.

func Install

func Install(ctx context.Context, dir string, production bool, stdout, stderr io.Writer) (string, error)

Install runs `npm install` in the given directory, installing the dependencies for the Node.js app located there. If the `PULUMI_PREFER_YARN` environment variable is set, `yarn install` is used instead of `npm install`. The returned string is the name of the package manager used during installation.

func Pack

func Pack(ctx context.Context, dir string, stderr io.Writer) ([]byte, error)

Pack runs `npm pack` in the given directory, packaging the Node.js app located there into a tarball and returning it as `[]byte`. `stdout` is ignored for the command, as it does not generate useful data. If the `PULUMI_PREFER_YARN` environment variable is set, `yarn pack` is run instead of `npm pack`.

Types

type PackageManager

type PackageManager interface {
	// Install will install dependencies with the given package manager.
	Install(ctx context.Context, dir string, production bool, stdout, stderr io.Writer) error
	Pack(ctx context.Context, dir string, stderr io.Writer) ([]byte, error)
	// Name is the name of the binary executable used to invoke this package manager.
	// e.g. yarn or npm
	Name() string
}

A `PackageManager` is responsible for installing dependencies, packaging Pulumi programs, and executing Node in the context of installed packages. In practice, each implementation of this interface represents one of the package managers in the Node ecosystem e.g. Yarn, NPM, etc. The language host will dynamically dispatch to an instance of PackageManager in response to RPC requests.

func ResolvePackageManager

func ResolvePackageManager(pwd string) (PackageManager, error)

ResolvePackageManager determines which package manager to use. If the `PULUMI_PREFER_YARN` environment variable is set, or if a yarn.lock file exists, then YarnClassic is used. If a pnpm-lock.yaml file exists, then pnpm is used. Otherwise npm is used. The argument pwd is the directory we're checking for the presence of a lockfile.