Module build failed: BrowserslistError: Unknown browser query `op_mini all`

Hello Guys, I am receiving this error during webpack command for production build: “rimraf dist/* && webpack -p --bail --config ./etc/webpack.config.prod.js”

var path = require('path');
var webpack = require('webpack');
var ExtractTextPlugin = require('extract-text-webpack-plugin');

module.exports = {

    entry: {
        styles: ['./Client/styles.js'],
        jquery: ['./Client/jquery.js'],
        vendor: ['./Client/vendor.js'],
        app: [
            './CommonResources/Common/sharedModule.js',
            './Client/app.ts'
        ]
    },

    output: {
        path: path.resolve(__dirname + '/../dist'),
        filename: '[name].bundle.js',
        publicPath: '/dist/'
    },

    resolve: {
        alias: {
            cdn: path.resolve(__dirname + '/../CommonResources')
        }
    },

    plugins: [
        new ExtractTextPlugin({
            filename: '[name].bundle.css',
            allChunks: true
        })
    ],

    module: {
        loaders: [
            {
                test: /\.tsx?$/,
                loaders: ['awesome-typescript-loader'],
                exclude: /node_modules/
            },
            {
                test: /\.js$/,
                exclude: /node_modules|modernizr.custom.js|kendo.all.min.js|ipreo.common.docViewer.min.js|jszip.min.js|pdf.js|pdf.worker.js/,
                loader: 'babel-loader',
                query: {
                    presets: ['es2015']
                }
            },
            {
              test: /\.html$/,
              loader: 'html-loader'
            },
            {
                test: /\.less$/,
                loader: ExtractTextPlugin.extract({
                    fallback: 'style-loader',
                    use: ['css-loader?importLoaders=1', 'postcss-loader', 'less-loader']
                })
            },
            {
                test: /\.css$/,
                loader: ExtractTextPlugin.extract({
                    fallback: 'style-loader',
                    use: ['css-loader?importLoaders=1!', 'postcss-loader']
                })
            }
        ]
    }
};

ERROR in .//css-loader?importLoaders=1!.//postcss-loader!./~/less-loader!./Client/myComponent.less Module build failed: BrowserslistError: Unknown browser query op_mini all at error (C:\Web\node_modules\browserslist\index.js:23:15) at C:\Web\node_modules\browserslist\index.js:123:13 at Array.forEach (native) at browserslist (C:\Web\node_modules\browserslist\index.js:95:16) at isSupported (C:\Web\node_modules\caniuse-api\dist\index.js:66:37) at C:\Web\node_modules\postcss-merge-rules\dist\lib\ensureCompatibility.js:95:66 at C:\Web\node_modules\postcss-selector-parser\dist\selectors\container.js:170:26 at Selector.each (C:\Web\node_modules\postcss-selector-parser\dist\selectors\container.js:153:22) at Selector.walk (C:\Web\node_modules\postcss-selector-parser\dist\selectors\container.js:169:21) at C:\Web\node_modules\postcss-selector-parser\dist\selectors\container.js:173:31 at Root.each (C:\Web\node_modules\postcss-selector-parser\dist\selectors\container.js:153:22) at Root.walk (C:\Web\node_modules\postcss-selector-parser\dist\selectors\container.js:169:21) at Processor.func (C:\Web\node_modules\postcss-merge-rules\dist\lib\ensureCompatibility.js:88:17) at Processor.process (C:\Web\node_modules\postcss-selector-parser\dist\processor.js:34:14) at C:\Web\node_modules\postcss-merge-rules\dist\lib\ensureCompatibility.js:134:12 at Array.every (native) at ensureCompatibility (C:\Web\node_modules\postcss-merge-rules\dist\lib\ensureCompatibility.js:79:22) at canMerge (C:\Web\node_modules\postcss-merge-rules\dist\index.js:72:44) at C:\Web\node_modules\postcss-merge-rules\dist\index.js:220:24 at C:\Web\node_modules\postcss\lib\container.es6:199:28 at C:\Web\node_modules\postcss\lib\container.es6:110:26 at Root.each (C:\Web\node_modules\postcss\lib\container.es6:78:22) at Root.walk (C:\Web\node_modules\postcss\lib\container.es6:109:21) at Root.walkRules (C:\Web\node_modules\postcss\lib\container.es6:197:25) at C:\Web\node_modules\postcss-merge-rules\dist\index.js:267:13 at LazyResult.run (C:\Web\node_modules\postcss\lib\lazy-result.es6:321:20) at LazyResult.asyncTick (C:\Web\node_modules\postcss\lib\lazy-result.es6:248:32) at LazyResult.asyncTick (C:\Web\node_modules\postcss\lib\lazy-result.es6:260:22) at LazyResult.asyncTick (C:\Web\node_modules\postcss\lib\lazy-result.es6:260:22) at LazyResult.asyncTick (C:\Web\node_modules\postcss\lib\lazy-result.es6:260:22)

and it works fine when running webpack without “-p” key

[ai]

Also I highly recommend to move browsers lost to browserslist key in package.json. In Autoprefixer twitter I show many cases, when browsers option will not work.

[kolesnik]

You are right it was old “babel-plugin-react-autoprefix” dependency. Now I am good. Thank you a lot!