feat: read just the first line

package.json

@@ -3,13 +3,15 @@
  "version": "0.0.0",
  "description": "Create mocks servers with its schemas",
  "main": "src/index.js",
+ "type": "module",
  "scripts": {
  "test": "echo \"Error: no test specified\" && exit 1",
  "start": "node ."
  },
  "author": "",
  "license": "MPL-2.0",
  "dependencies": {
+ "n-readlines": "^1.0.1",
  "open-api-mocker": "github:adantoscano/open-api-mocker"
  }
 }

src/services/find-oas-from-dir.js

@@ -1,10 +1,12 @@
 import path from 'path';
 import * as fs from 'fs';
+import nReadlines from 'n-readlines'
 
 function isOas(filePath) {
- const fileString = fs.readFileSync(filePath, 'utf8')
+ const line = new nReadlines(filePath);
+ const firstLine = line.next().toString();
  const oasRegEx = /^openapi/i
- return oasRegEx.test(fileString);
+ return oasRegEx.test(firstLine);
 }
 
 export default function findOasFromDir(startPath) {
@@ -18,7 +20,7 @@ export default function findOasFromDir(startPath) {
  const filePath = path.join(startPath, file);
  const stat = fs.lstatSync(filePath);
  if (stat.isDirectory()) {
- return [...acc, ...findOasFromDir(filePath)]; //recurse
+ return [...acc, ...findOasFromDir(filePath)];
  } 
  if (file.endsWith('.yaml') && isOas(filePath)) {
  console.log('-- found: ', filePath);