In @vue/cli 3.x:

• Create a vue.config.js file in the root folder of your project, if you don't already have one.
• Have its contents as follows:

// vue.config.jsmodule.exports = {  devServer: {    proxy: {      "/gists": {        target: "https://api.github.com",        secure: false      }    }  }};

Now any call to (assuming your dev server is at localhost:8080) http://localhost:8080/gists will be redirected to https://api.github.com/gists.

Another example: proxying all calls

Say you have a local backend server that is typically deployed at localhost:5000 and you want to redirect all calls to /api/anything to it. Use:

// vue.config.jsmodule.exports = {    devServer: {        proxy: {            "/api/*": {                target: "http://localhost:5000",                secure: false            }        }    }};

If you use webpack template with vue-cli, then you can find the required information in this reference document:

http://vuejs-templates.github.io/webpack/proxy.html

Or instead of changing your template now, you may copy the relevant config from the webpack template into your local webpack-simple template.

EDIT: more info from my local setup

This is what I have in my config/index.js under module.exports:

dev: {    env: require('./dev.env'),    port: 4200,    assetsSubDirectory: 'static',    assetsPublicPath: '/',    proxyTable: {        '/api': {            target: 'http://localhost:8080',            changeOrigin: true        },        '/images': {            target: 'http://localhost:8080',            changeOrigin: true        },        // and so on...

The above config runs my vue-cli on port 4200, and I run my server on port 8080.

EDIT: Corrected info about CORS after comment #4 and #5

Note:

• The changeOrigin option in dev.proxyTable (in webpack config) ensures that you do not need to serve CORS headers on your server API responses.
• If you decide to omit changeOrigin for any reason, then you need to ensure that your server API includes Access-Control-Allow-Origin: * (or equivalent) in its response headers.

References:

1. https://stackoverflow.com/a/36662307/654825
2. https://github.com/chimurai/http-proxy-middleware

module.exports = {    devServer: {        proxy: {            '/api': {                target: 'http://genius.net',                changeOrigin: true,                pathRewrite: {                    '^/api': ''                }            },            '/auth': {                target: 'http://genius23.net',                changeOrigin: true,                pathRewrite: {                    '^/auth': ''                }            },        }    }};