vite.config.ts

import { defineConfig } from 'vite';
import vue from '@vitejs/plugin-vue';
import dts from 'vite-plugin-dts';
import * as path from 'path';

// https://vitejs.dev/config/
export default defineConfig({
	resolve: {
		alias: [
			{
				find       : '@',
				replacement: path.resolve(__dirname, 'src')
			}
		]
	},
	plugins: [ vue(), dts({ insertTypesEntry: true }) ],
	build  : {
		sourcemap    : true,
		lib          : {
			entry   : path.resolve(__dirname, 'src/index.ts'),
			name    : 'CalendarHeatmap',
			fileName: format => `vue3-calendar-heatmap.${format}.js`
		},
		rollupOptions: {
			// make sure to externalize deps that shouldn't be bundled
			// into your library
			external: [ 'vue', 'tippy.js' ],
			output  : {
				// Provide global variables to use in the UMD build
				// for externalized deps
				globals: {
					vue       : 'Vue',
					'tippy.js': 'tippy'
				}
			}
		}
	}
});