Passing environment-dependent variables in webpack

Question

I\'m trying to convert an angular app from gulp to webpack. in gulp I use gulp-preprocess to replace some variables in the html page (e.g. database name) depending on the NO

Answer 1

now 2020, i am face to same question, but for this old question, there are so many new answer, just list some of it:

• this is webpack.config.js

plugins: [
        new HtmlWebpackPlugin({
            // 1. title is the parameter, you can use in ejs template
            templateParameters:{
                title: JSON.stringify(someting: 'something'),
            },
        }), 


        //2. BUILT_AT is a parameter too. can use it.
        new webpack.DefinePlugin({
            BUILT_AT: webpack.DefinePlugin.runtimeValue(Date.now,"some"),

        }),

        //3. for webpack5, you can use global variable: __webpack_hash__
        //new webpack.ExtendedAPIPlugin()
    ],
    //4. this is not variable, this is module, so use 'import tt' to use it.
    externals: { 
        'ex_title': JSON.stringify({
            tt: 'eitentitle',
        })
    },

the 4 ways only basic, there are even more ways that i believe. but i think maybe this 4ways is the most simple.