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@smartrent/html-webpack-preconnect-plugin

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@smartrent/html-webpack-preconnect-plugin

Embed <link rel="preconnect"> into HtmlWebpackPlugin pages

1.1.0
latest
Source
npm

Version published: 2 years ago

Weekly downloads: 0; decreased by-100%

Maintainers: 9

Weekly downloads

Created: 2 years ago

Source

Html Webpack Preconnect Plugin

This extension plugin embeds <link rel="preconnect"> tags into HTML files generated by the HtmlWebpackPlugin. Supported in Webpack 3/4

Introduction

The preconnect can be pre-connected api server without having to wait for javascript loading and execute request, save a little time for users.

image source: keycdn

Document

The preconnect link relation type is used to indicate an origin that will be used to fetch required resources. Initiating an early connection, which includes the DNS lookup, TCP handshake, and optional TLS negotiation, allows the user agent to mask the high latency costs of establishing a connection.

https://www.w3.org/TR/resource-hints/#preconnect

blog: Eliminating Roundtrips with Preconnect

Browser compatibility

Chrome/Firefox/Android have been supported, IE/Edge/Safari not yet.

https://caniuse.com/#feat=link-rel-preconnect

Install

npm install html-webpack-preconnect-plugin --save-dev

Usage

Add the plugin to your webpack config:

var HtmlWebpackPlugin = require('html-webpack-plugin')
var HtmlWebpackPreconnectPlugin = require('html-webpack-preconnect-plugin')

// webpack config
{
  ...
  plugins: [
    new HtmlWebpackPlugin({
      filename: 'index.html',

      // set the preconnect origins
      preconnect: [
        'https://api1.example.com',
        'http://api2.example.com',
      ]
    }),

    // another HTML entry
    new HtmlWebpackPlugin({
      filename: 'index2.html',
      preconnect: [
        'http://api2.example.com',
      ]
    }),

    // enabled preconnect plugin
    new HtmlWebpackPreconnectPlugin(),
  ]
}

Then the dist/index.html will contain:

<head>
  ...
  <link rel="preconnect" href="https://api1.example.com">
  <link rel="preconnect" href="http://api2.example.com">
</head>

HOW TO TEST

https://www.webpagetest.org

Run your page through webpagetest.org. Requests to the domains you specified in your dns-prefetch or preconnect tags should begin sooner because the initial connection will have been established. stackoverflow

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Package last updated on 28 Feb 2023

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