esbuild_plugin_importmap

esbuild-plugin-importmaps

Esbuild plugin for utilizing import maps and url imports during bundling. This plugin is for cases where you want to use esbuild from your go project.

Usage

package main

import (
	"os"
	
    "github.com/evanw/esbuild/pkg/api"
	"github.com/pushrbx/esbuild-plugin-importmap"
	"github.com/pushrbx/esbuild-plugin-importmap/importmap"
	
)

func main() {
	myImportMapData := importmap.Data{
		Imports: importmap.Imports{
			"preact-progressive-enhancement": "https://esm.sh/preact-progressive-enhancement@1.0.5",
        },
    }
	
	plugin, err := esbuild_plugin_importmap.NewPlugin(esbuild_plugin_importmap.WithMap(myImportMapData))
	
	if err != nil {
		panic(err)
    }

	result := api.Build(api.BuildOptions{
		EntryPoints: []string{"input.js"},
		Outfile:     "output.js",
		Bundle:      true,
		Write:       true,
		LogLevel:    api.LogLevelInfo,
		Plugins: []api.Plugin{
			plugin,
		},
	})

	if len(result.Errors) > 0 {
		os.Exit(1)
	}
}

It's also possible to load an importmap file:

package main

import (
	"os"

	"github.com/evanw/esbuild/pkg/api"
	"github.com/pushrbx/esbuild-plugin-importmap"
	"github.com/pushrbx/esbuild-plugin-importmap/importmap"

)

func main() {
	m, err := importmap.LoadFromFile("./importmap.json")
	if err != nil {
		panic(err)
	}

	plugin, err := esbuild_plugin_importmap.NewPlugin(esbuild_plugin_importmap.WithImportMapPath("./importmap.json"))

	if err != nil {
		panic(err)
	}

	result := api.Build(api.BuildOptions{
		EntryPoints: []string{"input.js"},
		Outfile:     "output.js",
		Bundle:      true,
		Write:       true,
		LogLevel:    api.LogLevelInfo,
		Plugins: []api.Plugin{
			plugin,
		},
	})

	if len(result.Errors) > 0 {
		os.Exit(1)
	}
}