Introduction

For more than a decade, npm has been the default package manager for JavaScript projects. Almost every frontend or backend project—React, Angular, Node.js, or even tooling scripts—started with npm install. It became so common that many developers never questioned it.

But things are changing.

In 2025, more teams are asking a serious question:

Is npm still the right choice for modern applications, or is it time to move on?

Two strong alternatives have gained massive adoption:

This article explains:

This is not hype-driven content. It is based on real-world usage, CI pipelines, enterprise Angular apps, and long-term maintenance concerns.

Why Package Managers Matter More Than Ever

In the early days, package managers were just tools to download libraries. Today, they are core infrastructure.

A package manager affects:

For large Angular applications with:

…the choice of package manager can easily save or waste hours every week.

npm: The Default That Became a Bottleneck

npm deserves respect. It solved a massive problem and enabled the JavaScript ecosystem to grow. But over time, some serious limitations became visible.

1. Slow Install Times

Even today, many teams face:

For Angular enterprise apps, this pain multiplies because:

2. Massive node_modules Size

npm installs duplicate dependencies across projects.

Example:

On a developer machine, this quickly becomes:

3. Flat Dependency Hoisting Problems

npm flattens dependencies aggressively. This leads to:

Angular apps are especially sensitive because:

4. Lockfile Instability (Historically)

Although npm has improved, many teams still remember:

Enter pnpm: A Smarter Package Manager

pnpm is not a new tool, but in recent years it has gone from “interesting alternative” to enterprise-ready standard.

Core Idea of pnpm

pnpm uses a content-addressable store.

Instead of copying dependencies into every project:

This single idea changes everything.

How pnpm Works Internally

Global Store

pnpm keeps a global store like:

~/.pnpm-store/

Each package version exists only once.

If 20 Angular projects depend on:

@angular/[email protected]

It is stored once and shared.

Strict Dependency Resolution

pnpm enforces true dependency isolation.

A package can only access:

This prevents accidental imports.

For Angular, this is extremely valuable because:

pnpm vs npm: Real Angular Project Comparison

Let’s consider a real Angular enterprise app:

npm Experience

pnpm Experience

This is not theoretical. Many teams report similar numbers.

Using pnpm with Angular (Step-by-Step)

1. Install pnpm

npm install -g pnpm

2. Create Angular App with pnpm

pnpm create @angular/app my-app
cd my-app
pnpm install

Angular CLI works without issues.

3. pnpm Configuration for Angular

Add .npmrc:

strict-peer-dependencies=trueauto-install-peers=true

This ensures:

4. Using pnpm in Monorepos

pnpm shines in monorepos.

Example pnpm-workspace.yaml:

packages:- apps/*- libs/*

Angular + Nx + pnpm is now a common enterprise stack.

pnpm in CI/CD Pipelines

pnpm dramatically improves CI performance.

Example GitHub Actions step:

- uses: pnpm/action-setup@v3with:
    version: 9

- run: pnpm install --frozen-lockfile

Benefits:

Bun: More Than a Package Manager

Bun is not just competing with npm or pnpm.
It is trying to replace Node.js tooling entirely.

Bun includes:

All in one binary.

Why Bun Exists

The JavaScript ecosystem has become complex:

Bun’s goal is simple:

Make JavaScript tooling fast, simple, and integrated.

Bun Package Manager Basics

Using Bun feels familiar:

bun install
bun add rxjs
bun remove lodash

But internally, Bun is written in Zig, not JavaScript.
This gives it huge performance advantages.

Bun Performance: Reality Check

Installation Speed

In many benchmarks:

Disk Usage

Bun uses caching and deduplication but:

Using Bun with Angular (Current State in 2025)

This is where things get interesting.

Can You Use Bun with Angular?

Yes, but with caveats.

bun install
bun run ng serve

Most Angular projects work, but…

Angular CLI Compatibility

Angular CLI:

In real projects:

Bun as a Runtime vs Node.js

Bun is fast, but Node.js is battle-tested.

For Angular:

As of 2025:

Bun in CI/CD: Is It Ready?

Bun can significantly reduce pipeline time.

But enterprises face concerns:

Many teams adopt Bun locally, but keep Node.js in CI.

pnpm vs Bun: Feature Comparison

FeaturepnpmBun
Package ManagerYesYes
RuntimeNoYes
Disk EfficiencyExcellentGood
Angular CompatibilityExcellentPartial
Monorepo SupportExcellentImproving
CI StabilityProvenEmerging
EcosystemMatureGrowing

Is npm Really Ending?

Short answer: No
Practical answer: It is no longer the best default

npm will continue to exist because:

But for new projects, npm is increasingly avoided.

What Senior Developers Are Choosing in 2025

Typical Enterprise Angular Stack

Experimental / High-Performance Teams

Migration Strategy: npm → pnpm

Step 1: Replace Lockfile

rm package-lock.json
pnpm install

Step 2: Fix Hidden Dependencies

pnpm will expose:

Fix them properly.

Step 3: Update CI

Replace npm install with pnpm install.

Migration Strategy: npm → Bun

Proceed carefully.

Recommended only if:

Common Mistakes to Avoid

  1. Blindly switching without CI testing

  2. Mixing npm and pnpm lockfiles

  3. Using Bun in production without fallback

  4. Ignoring peer dependency warnings

Long-Term Outlook (2025–2027)

Angular ecosystem trends strongly favour pnpm.

Final Verdict

So, is this the end of npm?

Not officially—but functionally, yes for many teams.

If you are starting a new Angular project today, pnpm should be your default choice.
If you want to experiment and push performance limits, explore Bun carefully.

The future of JavaScript tooling is faster, stricter, and more intentional—and npm is no longer leading that future.