web-ext : How do I deal with deprecated/removed packages?

Following firefox Addon tutorial, it says to use web-ext . I can't install it.I tried:$ npm install --global web-ext errors:npm WARN deprecated js-select@0.6.0: Package no longer supported. Contact support@npmjs.com for more info. npm WARN deprecated circular-json@0.3.3: CircularJSON is in maintenance only, flatted is its successor. npm WARN deprecated nomnom@1.8.1: Package no longer supported. Contact support@npmjs.com for more info. C:\Users\name\AppData\Roaming\npm\web-ext -> C:\Users\name\AppData\Roaming\npm\node_modules\web-ext\bin\web-ext C:\Users\name\AppData\Roaming\npm `-- web-ext@3.0.0 npm WARN optional SKIPPING OPTIONAL DEPENDENCY: fsevents@2.0.1 (node_modules\web-ext\node_modules\addons-linter\node_modules\fsevents): npm WARN notsup SKIPPING OPTIONAL DEPENDENCY: Unsupported platform ... etc ... My versions:$ node --version && npm --version v7.0.0 3.10.8 I'm not sure where to go?Update node? I'm finding it says to use nvmSo, install nvm? It doesn't appear to be in the bin: /jodejs/use older version of the libraries?

Submitted April 23, 2019 at 09:08PM by MonkeyNin