Feat: Add test templates and write performance data (#5)

* Feat: Add test templates and write performance data

Author: luckrnx09

README.md

@@ -95,11 +95,14 @@ const options = {
 
 
 ## Performance
-*TODO: Find some emails, add them to a the project, then minify and list here. Welcome to submit a PR*
 
-| Email                         | Original Size     | Minified Size | Elapsed time |
-|--------------------------------|-----------------|---------|------|
-|[Example 1](examples/emails/example1.txt)| 0kb | 0kb | 0ms |
+The following table shows the statistics in the Node.js environment
+| Email                         | Original Size | Minified Size | Elapsed time |
+| ----------------------------- | ------------- | ------------- | ------------ |
+|[Holiday Cheer]("examples%2Ftemplates%2FHoliday%20Cheer")|33.09kb|32.36kb|532.77ms|
+|[Membership Discount]("examples%2Ftemplates%2FMembership%20Discount")|104.00kb|37.97kb|94.75ms|
+|[Movies for Christmas]("examples%2Ftemplates%2FMovies%20for%20Christmas")|289.47kb|58.30kb|138.87ms|
+> The emails above are generated from [unlayer](https://dashboard.unlayer.com).
 
 ## License
 See [LICENSE](./LICENSE)

examples/templates/Holiday Cheer

@@ -1,6 +1,6 @@
 {
   "name": "email-minifier",
-  "version": "1.0.2",
+  "version": "1.0.3",
   "keywords": [
     "compress",
     "compressor",
@@ -40,6 +40,7 @@
     }
   },
   "scripts": {
+    "performance": "ts-node ./scripts/performance.ts",
     "lint": "npx eslint . --fix",
     "build": "npm run lint && rm -rf dist && rollup --config --bundleConfigAsCjs",
     "test": "npm run lint && jest",

examples/templates/Membership Discount

@@ -0,0 +1,62 @@
+import fs from 'fs';
+import path from 'path';
+import { EmailMinifier } from '../lib/email-minifier';
+import { performance } from 'perf_hooks';
+
+const source = 'https://dashboard.unlayer.com';
+const dir = 'examples/templates';
+
+(async () => {
+  const examples = [];
+  const filenames = fs.readdirSync(dir);
+  for (const filename of filenames) {
+    const file = path.join(dir, filename);
+    if (fs.statSync(file).isFile()) {
+      const html = fs.readFileSync(file, 'utf-8');
+      const t1 = performance.now();
+      const { original, minified } = await new EmailMinifier(html).minify();
+      const t2 = performance.now();
+      examples.push({
+        filename,
+        url: file,
+        originalSize: original.length / 1024,
+        minifiedSize: minified.length / 1024,
+        elapsed: t2 - t1,
+      });
+    }
+  }
+  const content = examples
+    .sort((a, b) => a.originalSize - b.originalSize)
+    .map(
+      (example) =>
+        `|[${example.filename}]("${encodeURIComponent(
+          example.url,
+        )}")|${example.originalSize.toFixed(
+          2,
+        )}kb|${example.minifiedSize.toFixed(2)}kb|${example.elapsed.toFixed(
+          2,
+        )}ms|`,
+    )
+    .join(`\n`);
+  const sectionContent = [
+    'The following table shows the statistics in the Node.js environment',
+    '| Email                         | Original Size | Minified Size | Elapsed time |',
+    '| ----------------------------- | ------------- | ------------- | ------------ |',
+    content,
+    `> The emails above are generated from [unlayer](${source}).`,
+  ].join('\n');
+
+  const readMe = fs.readFileSync('README.md', 'utf-8');
+  const startMark = '## Performance';
+  const endMark = '## License';
+  const start = readMe.indexOf(startMark);
+  const end = readMe.indexOf(endMark);
+  const newReadMe =
+    readMe.substring(0, start + startMark.length) +
+    '\n\n' +
+    sectionContent +
+    '\n\n' +
+    readMe.substring(end);
+  readMe.substring(end);
+  fs.writeFileSync('README.md', newReadMe, 'utf-8');
+})();

examples/templates/Movies for Christmas

@@ -0,0 +1,8 @@
+{
+    "compilerOptions": {
+        "esModuleInterop": true,
+        "lib": [
+            "ESNext"
+        ]
+    }
+}