Drop gzip-size dependency

Author: dcsaszar

package-lock.json

@@ -37,7 +37,6 @@
     "acorn-walk": "^8.0.0",
     "chalk": "^4.1.0",
     "commander": "^6.2.0",
-    "gzip-size": "^6.0.0",
     "lodash": "^4.17.20",
     "opener": "^1.5.2",
     "sirv": "^1.0.7",

package.json

@@ -2,12 +2,12 @@ const fs = require('fs');
 const path = require('path');
 
 const _ = require('lodash');
-const gzipSize = require('gzip-size');
 
 const Logger = require('./Logger');
 const Folder = require('./tree/Folder').default;
 const {parseBundle} = require('./parseUtils');
 const {createAssetsFilter} = require('./utils');
+const {gzipSize} = require('./sizeUtils');
 
 const FILENAME_QUERY_REGEXP = /\?.*$/u;
 const FILENAME_EXTENSIONS = /\.(js|mjs)$/iu;
@@ -102,7 +102,7 @@ function getViewerData(bundleStats, bundleDir, opts) {
 
     if (assetSources) {
       asset.parsedSize = Buffer.byteLength(assetSources.src);
-      asset.gzipSize = gzipSize.sync(assetSources.src);
+      asset.gzipSize = gzipSize(assetSources.src);
     }
 
     // Picking modules from current bundle script

src/analyzer.js

@@ -0,0 +1,5 @@
+const zlib = require('zlib');
+
+export function gzipSize(input) {
+  return zlib.gzipSync(input, {level: 9}).length;
+}

src/sizeUtils.js

@@ -1,5 +1,5 @@
 import _ from 'lodash';
-import gzipSize from 'gzip-size';
+import {gzipSize} from '../sizeUtils';
 
 import Module from './Module';
 import BaseFolder from './BaseFolder';
@@ -14,7 +14,7 @@ export default class Folder extends BaseFolder {
 
   get gzipSize() {
     if (!_.has(this, '_gzipSize')) {
-      this._gzipSize = this.src ? gzipSize.sync(this.src) : 0;
+      this._gzipSize = this.src ? gzipSize(this.src) : 0;
     }
 
     return this._gzipSize;

src/tree/Folder.js

@@ -1,5 +1,5 @@
 import _ from 'lodash';
-import gzipSize from 'gzip-size';
+import {gzipSize} from '../sizeUtils';
 
 import Node from './Node';
 
@@ -33,7 +33,7 @@ export default class Module extends Node {
 
   get gzipSize() {
     if (!_.has(this, '_gzipSize')) {
-      this._gzipSize = this.src ? gzipSize.sync(this.src) : undefined;
+      this._gzipSize = this.src ? gzipSize(this.src) : undefined;
     }
 
     return this._gzipSize;