node-stdlib-browser

Node standard library for browser.

Features:

• Based on node-libs-browser for Webpack
• Maintained with newer versions and modern implementations
• Works with Webpack, Rollup, esbuild and Browserify, but should also work with other bundlers
• Exports implementation with node: protocol which allows for builtin modules to be referenced by valid absolute URL strings

Check example to see how modules work in browser environment.

Install

npm install node-stdlib-browser --save-dev

Usage

Webpack

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Rollup

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esbuild

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Browserify

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Package contents

Module Browser implementation Mock implementation Notes

assert assert

buffer buffer buffer buffer@5 for IE 11 support

child_process

cluster

console console-browserify console

constants constants-browserify

crypto crypto-browserify

dgram

dns

dns

domain domain-browser

events events

fs

Mocking fs

http stream-http

https https-browserify

module

net

net

os os-browserify

path path-browserify

process process process

punycode punycode

punycode@1 for browser support

querystring querystring-es3

Contains additional exports from newer Node versions

readline

repl

stream stream-browserify

string_decoder string_decoder

sys util

timers timers-browserify

timers/promises isomorphic-timers-promises

tls

tls

tty tty-browserify tty

url node-url

Contains additional exports from newer Node versions (URL and URLSearchParams are not polyfilled)

util util

vm vm-browserify

zlib browserify-zlib

_stream_duplex readable-stream

_stream_passthrough readable-stream

_stream_readable readable-stream

_stream_transform readable-stream

_stream_writable readable-stream

packages

Returns: object

Exports absolute paths to each module directory (where package.json is located), keyed by module names. Modules without browser replacements return module with default export null.

Some modules have mocks in the mock directory. These are replacements with minimal functionality.

Mocking fs

fs package doesn’t return anything since there are many different ways you can implement file system functionality in browser.

Examples of implementations:

Node support

Minimum supported version should be Node 10.

If you’re using ESM in Node < 12.20, note that subpath patterns are not supported so mocks can’t be handled. In that case, it’s recommended to use CommonJS implementation.

Browser support

Minimum supported version should be Internet Explorer 11, but most modules support even Internet Explorer 9.

Types

You can use default @types/node types.

License

MIT © Ivan Nikolić