1 files changed, 64 insertions, 0 deletions
diff --git a/tools/minify.js b/tools/minify.js
new file mode 100755
index 0000000..105c4eb
--- /dev/null
+++ b/tools/minify.js
@@ -0,0 +1,64 @@
+#!/usr/bin/env node
+
+const {minify: minifyJs} = require('terser')
+const {minify: minifyHtml} = require('html-minifier-terser')
+const CleanCSS = require('clean-css');
+const parseArgs = require('minimist')
+const {promises: fs} = require('fs')
+
+const argv = process.argv.slice(2)
+if (!argv.length) {
+    console.log(`usage: ${process.argv[1]} --type js|css|html filename`)
+    process.exit(1)
+}
+
+async function read() {
+    const chunks = []
+    for await (const chunk of process.stdin)
+        chunks.push(chunk)
+    return Buffer.concat(chunks).toString('utf-8')
+}
+
+const args = parseArgs(argv, {
+    string: ['type'],
+})
+
+;(async () => {
+    if (!['js', 'css', 'html'].includes(args.type))
+        throw new Error('invalid type')
+
+    const content = await read()
+
+    switch (args.type) {
+        case 'html':
+            console.log(await minifyHtml(content, {
+                collapseBooleanAttributes: true,
+                collapseInlineTagWhitespace: true,
+                collapseWhitespace: true,
+                conservativeCollapse: true,
+                html5: true,
+                includeAutoGeneratedTags: true,
+                keepClosingSlash: false,
+                minifyCSS: true,
+                minifyJS: true,
+                minifyURLs: false,
+                preserveLineBreaks: true,
+                removeComments: true,
+                removeAttributeQuotes: false,
+                sortAttributes: false,
+                sortClassName: false,
+                useShortDoctype: true,
+            }))
+            break
+
+        case 'css':
+            console.log(new CleanCSS({level:2}).minify(content).styles)
+            break
+
+        case 'js':
+            console.log((await minifyJs(content, {
+                ecma: 5
+            })).code)
+            break
+    }
+})()