fix: make plugin usable on Windows

- replace usage of mkdir CLI with equivalent Node API
- replace usage of unzip CLI with node-stream-zip lib
- use os.tempdir() for getting a cross-platform temp directory
- replace path concatenation with join/normalize otherwise fileName.includes(handlerPath)
  never succeeds because of path separator mismatch

Closes #7

package.json

@@ -29,7 +29,8 @@
   "bugs": "https://github.com/adriencaccia/serverless-analyze-bundle-plugin/issues",
   "dependencies": {
     "@babel/runtime": "^7.18.6",
-    "check-node-version": "^4.2.1"
+    "check-node-version": "^4.2.1",
+    "node-stream-zip": "^1.15.0"
   },
   "devDependencies": {
     "@babel/cli": "^7.18.6",

plugin/bundleVisualizer.ts

@@ -1,8 +1,11 @@
 import check from 'check-node-version';
 import { exec } from 'child_process';
 import { readdirSync, statSync } from 'fs';
-import { join, parse } from 'path';
+import { tmpdir } from 'os';
+import { mkdir } from 'fs/promises';
+import { join, normalize, parse } from 'path';
 import { FunctionDefinitionHandler } from 'serverless';
+import StreamZip from 'node-stream-zip';
 
 import type { ServerlessAnalyzeBundlePlugin } from './serverlessAnalyzeBundle';
 
@@ -28,17 +31,18 @@ const getAllFiles = function (dirPath: string, arrayOfFilesInput: string[] = [])
   let arrayOfFiles = arrayOfFilesInput;
 
   files.forEach(function (file) {
-    if (statSync(dirPath + '/' + file).isDirectory()) {
-      arrayOfFiles = getAllFiles(dirPath + '/' + file, arrayOfFiles);
+    const filePath = join(dirPath, file);
+    if (statSync(filePath).isDirectory()) {
+      arrayOfFiles = getAllFiles(filePath, arrayOfFiles);
     } else {
-      arrayOfFiles.push(join(dirPath, '/', file));
+      arrayOfFiles.push(filePath);
     }
   });
 
   return arrayOfFiles;
 };
 
-const TMP_FOLDER = '/tmp/serverless-esbuild-bundle-analyzer';
+const TMP_FOLDER = join(tmpdir(), 'serverless-esbuild-bundle-analyzer');
 
 async function bundleVisualizer(this: ServerlessAnalyzeBundlePlugin): Promise<void> {
   const { analyze: functionName } = this.options;
@@ -61,13 +65,14 @@ async function bundleVisualizer(this: ServerlessAnalyzeBundlePlugin): Promise<vo
 
   this.serverless.cli.log(`⏳ Analyzing function ${functionName}`, 'ServerlessAnalyzeBundlePlugin');
 
-  const TEMP_DIR_LOCATION = `${TMP_FOLDER}/${functionZipName}/${new Date().getTime()}`;
-  await pExec(`mkdir -p ${TEMP_DIR_LOCATION}`);
+  const TEMP_DIR_LOCATION = join(TMP_FOLDER, functionZipName, new Date().getTime().toString());
+  await mkdir(TEMP_DIR_LOCATION, { recursive: true });
 
-  await pExec(`unzip .serverless/${functionZipName} -d ${TEMP_DIR_LOCATION}`);
+  const functionZip = new StreamZip.async({ file: `.serverless/${functionZipName}` });
+  await functionZip.extract(null, TEMP_DIR_LOCATION);
 
   const allFiles = getAllFiles(`${TEMP_DIR_LOCATION}`);
-  const handlerPath = (slsFunction as FunctionDefinitionHandler).handler.split('.')[0];
+  const handlerPath = normalize((slsFunction as FunctionDefinitionHandler).handler.split('.')[0]);
   const metafileName = allFiles.filter(
     fileName => fileName.includes(handlerPath) && fileName.endsWith('-meta.json'),
   )[0];

yarn.lock

@@ -6713,6 +6713,13 @@ __metadata:
   languageName: node
   linkType: hard
 
+"node-stream-zip@npm:^1.15.0":
+  version: 1.15.0
+  resolution: "node-stream-zip@npm:1.15.0"
+  checksum: 0b73ffbb09490e479c8f47038d7cba803e6242618fbc1b71c26782009d388742ed6fb5ce6e9d31f528b410249e7eb1c6e7534e9d3792a0cafd99813ac5a35107
+  languageName: node
+  linkType: hard
+
 "nopt@npm:^5.0.0":
   version: 5.0.0
   resolution: "nopt@npm:5.0.0"
@@ -7878,6 +7885,7 @@ __metadata:
     eslint-plugin-prettier: ^4.2.1
     husky: ^8.0.1
     lint-staged: ^12.5.0
+    node-stream-zip: ^1.15.0
     prettier: ^2.7.1
     serverless: ^3.21.0
     standard-version: ^9.5.0