Less.js: 3.11.0 version ,gulp-less not work

[bigmeow]

// installed gulp-less last version
require("gulp-less")

C:\project\com\JK724.XCX.WechatShopping\node_modules\accord\lib\adapter_base.js:105
        throw new Error("'tried to require: " + this.supportedEngines + "'.\nNone found. Make sure one has been installed!");
        ^

Error: 'tried to require: less'.
None found. Make sure one has been installed!
    at Less.Adapter (C:\project\com\JK724.XCX.WechatShopping\node_modules\accord\lib\adapter_base.js:105:15)
    at new Less (C:\project\com\JK724.XCX.WechatShopping\node_modules\accord\lib\adapters\less\2.x - 3.x.js:17:41)
    at Object.exports.load (C:\project\com\JK724.XCX.WechatShopping\node_modules\accord\lib\index.js:31:12)
    at Object.<anonymous> (C:\project\com\JK724.XCX.WechatShopping\node_modules\gulp-less\index.js:9:29)
    at Module._compile (internal/modules/cjs/loader.js:778:30)
    at Object.Module._extensions..js (internal/modules/cjs/loader.js:789:10)
    at Module.load (internal/modules/cjs/loader.js:653:32)
    at tryModuleLoad (internal/modules/cjs/loader.js:593:12)
    at Function.Module._load (internal/modules/cjs/loader.js:585:3)
    at Module.require (internal/modules/cjs/loader.js:692:17)

in package.json of gulp-less:

    "less": "2.6.x || ^3.7.1",

[Dimitar-Goshev]

We are experiencing the same issue as of today:
"less": "^3.8.1"

[dgavril]

Also reproducible with grunt-contrib-less ("grunt-contrib-less": "2.0.0") which uses "less": "^3.0.4".

[bigmeow]

My current solution is to lock the less version number in the project's package.json file:

"less": "3.10.3"

[jmwolfe]

@bigmeow any idea why my CI build is still failing?

I run:

 call npm install --no-optional

but it doesn't seem to be getting the right version even with package.json above.

[jmwolfe]

In case any one else has this issue, the problem was I was interpreting someone's comment on the gulp-less project as applying to grunt/bower.. however it was the package.json option for yarn (resolutions:).

This little trick worked for me to peg the dependent less version to 3.10.3:

https://stackoverflow.com/questions/52416312/npm-equivalent-of-yarn-resolutions

only thing is you have to get the right directory in your CI path so it can find npx. HTH.

[jmwolfe]

My current solution is to lock the less version number in the project's package.json file:

"less": "3.10.3"

this doesn't seem to work if less is a dependent package to an installed package, like gulp-less. See my post above about implementing a resolutions tag in package.json for npm.

[matthew-dean]

Closing as duplicate of https://github.com/less/less.js/issues/3469