Code cleanup

1 files changed, 46 insertions, 29 deletions

diff --git a/esbuild.config.js b/esbuild.config.js
index cb83e51..3d01486 100644
--- a/esbuild.config.js
+++ b/esbuild.config.js
@@ -1,24 +1,43 @@
 import esbuild from 'esbuild';
 import fs from 'fs-extra';
 
-const production = process.env.NODE_ENV === 'production';
+const isProduction = process.env.NODE_ENV === 'production';
 
-async function buildJS() {
-    await esbuild.build({
-        entryPoints: ['src/ts/script.ts'],
+const paths = {
+    distDir: 'dist',
+    assetsDir: 'src/assets',
+    jsEntry: 'src/ts/script.ts',
+    cssEntry: 'src/css/style.css',
+    componentsHtml: 'src/index.html',
+    demoHtml: '.demo/index.html',
+    outJs: 'dist/bundle.js',
+    outCss: 'dist/bundle.css',
+    outComponentsHtml: 'dist/index.html',
+    outDemoHtml: 'dist/demo.html',
+};
+
+async function cleanDist() {
+    await fs.remove(paths.distDir);
+    await fs.ensureDir(paths.distDir);
+}
+
+function buildJavaScript() {
+    return esbuild.build({
+        entryPoints: [paths.jsEntry],
         bundle: true,
-        minify: production,
+        minify: isProduction,
         sourcemap: true,
         target: 'es2020',
-        outfile: 'dist/bundle.js',
+        outfile: paths.outJs,
+        logLevel: 'info',
     });
 }
 
-async function buildCSS() {
-    await esbuild.build({
-        entryPoints: ['src/css/style.css'],
+function buildCss() {
+    return esbuild.build({
+        entryPoints: [paths.cssEntry],
         bundle: true,
-        minify: production,
+        minify: isProduction,
         sourcemap: true,
         loader: {
             '.css': 'css',
@@ -26,34 +45,32 @@ async function buildCSS() {
             '.png': 'file',
             '.svg': 'file',
         },
-        outfile: 'dist/bundle.css',
+        outfile: paths.outCss,
+        logLevel: 'info',
     });
 }
 
 async function copyAssets() {
-    await fs.copy('src/assets', 'dist', {
-        overwrite: true,
-    });
+    // Copy into dist root so URLs like /img/* keep working.
+    await fs.copy(paths.assetsDir, paths.distDir, { overwrite: true });
 }
 
-async function processHTML() {
-    let html = await fs.readFile('src/index.html', 'utf8');
-    await fs.writeFile('dist/index.html', html);
-}
+async function copyHtml() {
+    await fs.copyFile(paths.componentsHtml, paths.outComponentsHtml);
 
-async function clean() {
-    await fs.remove('dist');
-    await fs.ensureDir('dist');
+    // Optional demo page.
+    if (await fs.pathExists(paths.demoHtml)) {
+        await fs.copyFile(paths.demoHtml, paths.outDemoHtml);
+    }
 }
 
 async function build() {
-    try {
-        await clean();
-        await Promise.all([buildJS(), buildCSS(), copyAssets()]);
-        await processHTML();
-    } catch (err) {
-        process.exit(1);
-    }
+    await cleanDist();
+    await Promise.all([buildJavaScript(), buildCss(), copyAssets()]);
+    await copyHtml();
 }
 
-build();
+build().catch((error) => {
+    console.error(error);
+    process.exit(1);
+});