import * as esbuild from 'esbuild';
import { dirname, join } from 'path';
import { fileURLToPath } from 'url';
const __dirname = dirname(fileURLToPath(import.meta.url));
const isDev = process.argv.includes('--dev');
const result = await esbuild.build({
entryPoints: [join(__dirname, 'd3-modules.js')],
bundle: true,
minify: !isDev,
platform: 'browser',
target: ['es2020'],
format: 'iife',
globalName: 'd3', // Exposes as window.d3
outfile: join(__dirname, '..', 'static', 'd3.bundle.js'),
sourcemap: isDev ? 'inline' : false,
treeShaking: true,
metafile: true,
});
// Report bundle size
const outputSize = Object.values(result.metafile.outputs)[0].bytes;
console.log(`D3 bundle created: ${(outputSize / 1024).toFixed(1)} KB`);
if (isDev) {
console.log('Development build with sourcemaps');
}
