Initial commit

node_modules/maplibre-gl/build/check-bundle-size.js

@@ -0,0 +1,77 @@
+#!/usr/bin/env node
+
+import fs from "fs";
+import zlib from "zlib";
+import prettyBytes from "pretty-bytes";
+const beforeSourcemap = JSON.parse(fs.readFileSync('./before.json').toString());
+const afterSourcemap = JSON.parse(fs.readFileSync('./after.json').toString());
+
+function fileSize(file) {
+    const {size} = fs.statSync(file);
+    const gzipped = zlib.gzipSync(fs.readFileSync(file)).length
+    return {
+        size,
+        gzipped
+    };
+}
+
+const beforejs = fileSize('./before/maplibre-gl.js');
+const beforecss = fileSize('./before/maplibre-gl.css');
+const afterjs = fileSize('./after/maplibre-gl.js');
+const aftercss = fileSize('./after/maplibre-gl.css');
+
+console.log('Bundle size report:\n');
+console.log(`**Size Change:** ${prettyBytes(afterjs.gzipped + aftercss.gzipped - (beforejs.gzipped + beforecss.gzipped), { signed: true })}`);
+console.log(`**Total Size Before:** ${prettyBytes(beforejs.gzipped + beforecss.gzipped)}`);
+console.log(`**Total Size After:** ${prettyBytes(afterjs.gzipped + aftercss.gzipped)}`);
+console.log(`
+| Output file | Before | After | Change |
+| :--- | :---: | :---: | :---: |
+| maplibre-gl.js | ${prettyBytes(beforejs.gzipped)} | ${prettyBytes(afterjs.gzipped)} | ${prettyBytes(afterjs.gzipped - beforejs.gzipped, { signed: true })} |
+| maplibre-gl.css | ${prettyBytes(beforecss.gzipped)} | ${prettyBytes(aftercss.gzipped)} | ${prettyBytes(aftercss.gzipped - beforecss.gzipped, { signed: true })} |`);
+
+const before = {};
+beforeSourcemap.results.forEach(result => {
+    Object.keys(result.files).forEach(filename => {
+        const {size} = result.files[filename];
+        before[filename] = size;
+    });
+});
+
+const after = {};
+afterSourcemap.results.forEach(result => {
+    Object.keys(result.files).forEach(filename => {
+        const {size} = result.files[filename];
+        after[filename] = size;
+    });
+});
+
+const diffs = [];
+Object.keys(Object.assign({}, before, after)).forEach(filename => {
+    const beforeSize = before[filename] || 0;
+    const afterSize = after[filename] || 0;
+    if (Math.abs(afterSize - beforeSize) > 0) {
+        diffs.push([
+            afterSize - beforeSize, // for sorting
+            filename.replace(/^[\./]+/, ''), // omit ../
+            prettyBytes(beforeSize),
+            prettyBytes(afterSize),
+            prettyBytes(afterSize - beforeSize, { signed: true })
+        ]);
+    }
+});
+
+diffs.sort((a, b) => b[0] - a[0]);
+
+console.log(`
+<details><summary>ℹ️ <strong>View Details</strong></summary>`);
+if (diffs.length) {
+    console.log(`
+| Source file | Before | After | Change |
+| :--- | :---: | :---: | :---: |
+${diffs.map(diff => '| ' + diff.slice(1).join(' | ') + ' |').join('\n')}
+`);
+} else {
+    console.log('No major changes');
+}
+console.log(`</details>`);