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@lerna/package-graph

Lerna's internal representation of a package graph

  • 6.4.1
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457K
decreased by-9.33%
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2
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What is @lerna/package-graph?

@lerna/package-graph is a utility for managing and analyzing the dependency graph of packages within a monorepo. It helps in understanding the relationships between different packages and can be used to perform operations like finding dependencies, dependents, and traversing the graph.

What are @lerna/package-graph's main functionalities?

Creating a Package Graph

This feature allows you to create a graph of packages from an array of package objects. The graph can then be used to analyze the relationships between the packages.

const { PackageGraph } = require('@lerna/package-graph');
const packages = [
  { name: 'package-a', version: '1.0.0', dependencies: { 'package-b': '^1.0.0' } },
  { name: 'package-b', version: '1.0.0', dependencies: {} }
];
const graph = new PackageGraph(packages);
console.log(graph);

Finding Package Dependencies

This feature allows you to find the dependencies of a specific package within the graph. In this example, it retrieves the dependencies of 'package-a'.

const { PackageGraph } = require('@lerna/package-graph');
const packages = [
  { name: 'package-a', version: '1.0.0', dependencies: { 'package-b': '^1.0.0' } },
  { name: 'package-b', version: '1.0.0', dependencies: {} }
];
const graph = new PackageGraph(packages);
const packageA = graph.get('package-a');
console.log(packageA.localDependencies);

Finding Package Dependents

This feature allows you to find the dependents of a specific package within the graph. In this example, it retrieves the dependents of 'package-b'.

const { PackageGraph } = require('@lerna/package-graph');
const packages = [
  { name: 'package-a', version: '1.0.0', dependencies: { 'package-b': '^1.0.0' } },
  { name: 'package-b', version: '1.0.0', dependencies: {} }
];
const graph = new PackageGraph(packages);
const packageB = graph.get('package-b');
console.log(packageB.localDependents);

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Package last updated on 12 Jan 2023

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