Encountered issue during installation of uglify.js on Windows 7 operating system

I'm currently working on updating Bootstrap to the latest version on my Windows 7 system. I am following instructions provided at . NodeJS and NPM have been successfully installed on my machine. However, when attempting to execute the following command:

npm install uglify-js -g

An error message is returned:

$ npm -g install uglify-js
npm http GET https://registry.npmjs.org/uglify-js
npm http 304 https://registry.npmjs.org/uglify-js
npm http GET https://registry.npmjs.org/optimist
npm http GET https://registry.npmjs.org/source-map
npm http 304 https://registry.npmjs.org/optimist
npm http GET https://registry.npmjs.org/optimist/-/optimist-0.3.7.tgz
npm http 304 https://registry.npmjs.org/source-map
npm ERR! error installing <a href="/cdn-cgi/l/email-protection" class="__cf_email__" data-cfemail="483d2f24212e3165223b087a667a667d">[email protected]</a>    

npm ERR! Error: No compatible version found: source-map@'>=0.1.7- <0.2.0-'
npm ERR! Valid install targets:
npm ERR! ["0.0.0","0.1.0","0.1.1","0.1.2","0.1.3"]
npm ERR!     at installTargetsError (c:\Program Files (x86)\nodejs\node_modules\
npm\lib\cache.js:488:10)
npm ERR!     at next_ (c:\Program Files (x86)\nodejs\node_modules\npm\lib\cache.
js:438:17)
npm ERR!     at next (c:\Program Files (x86)\nodejs\node_modules\npm\lib\cache.j
s:415:44)

Seeking advice on how to proceed from this point.

Appreciate any assistance,

Bill

node.jswindows-7npmuglifyjs

Answer №1

Check out UglifyJS on GitHub

To get UglifyJS through NPM, simply run npm install uglify-js@1.

Please note that the NPM package has been updated to UglifyJS2. If you still require version 1.x,
you can specify it by adding `@1` to the command like shown above. It is recommended to upgrade
to version 2, although this may pose some challenges as it features a different AST structure and API.

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