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Launch issues with Node 25.6 #985

@dombarnes

Description

@dombarnes

Before filing this issue, please ensure you're using the latest CLI by running swa --version and comparing to the latest version on npm.

Are you accessing the CLI from the default port :4280 ?

  • No, I am using a different port number (--port) and accessing the CLI from that port
  • Yes, I am accessing the CLI from port :4280

Make sure you are accessing the URL printed in the console when running swa start!

ℹ️ NOTE: Make sure to enable debug logs when running any swa commands using --verbose=silly

Describe the bug
A clear and concise description of what the bug is.
swa fails to load under Node 25.6.0 due it compatibility issue with buffer-equa-constant-time and jwa package

yarn az:deploy
/Users/<user>/projects/myproject/node_modules/buffer-equal-constant-time/index.js:37
var origSlowBufEqual = SlowBuffer.prototype.equal;
                                  ^

TypeError: Cannot read properties of undefined (reading 'prototype')
    at Object.<anonymous> (/Users/<user>/projects/myproject/node_modules/buffer-equal-constant-time/index.js:37:35)
    at Module._compile (node:internal/modules/cjs/loader:1809:14)
    at Object..js (node:internal/modules/cjs/loader:1940:10)
    at Module.load (node:internal/modules/cjs/loader:1530:32)
    at Module._load (node:internal/modules/cjs/loader:1332:12)
    at wrapModuleLoad (node:internal/modules/cjs/loader:255:19)
    at Module.require (node:internal/modules/cjs/loader:1553:12)
    at require (node:internal/modules/helpers:152:16)
    at Object.<anonymous> (/Users/<user>/projects/myproject/node_modules/jws/node_modules/jwa/index.js:1:19)
    at Module._compile (node:internal/modules/cjs/loader:1809:14)

Note: yarn az:deploy is an alias for swa build && swa deploy --env production

Related: auth0/node-jsonwebtoken#992

To Reproduce
Steps to reproduce the behavior:

  1. Install Node 25.6.0 (I used mise)
  2. yarn swa -h
  3. Error thrown

Expected behavior
swa tool does whatever you asked it to

Screenshots
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N/A

Desktop (please complete the following information):

  • OS: [e.g. iOS] macOS 26.2
  • Version [e.g. 22] Node 25.6.0, "@azure/static-web-apps-cli": "^2.0.8"

Additional context
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