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snippets/js/s/read-file-lines.md

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+---
+title: Read file lines
+type: snippet
+language: javascript
+tags: [node]
+cover: solitude-beach
+dateModified: 2020-10-22T20:24:04+03:00
+---
+
+Returns an array of lines from the specified file.
+
+- Use `fs.readFileSync()` to create a `Buffer` from a file.
+- Use `Buffer.prototype.toString()` to covert the buffer to a string.
+- Use `String.prototype.split()` to create an array of lines from the contents of the file.
+
+```js
+const fs = require('fs');
+
+const readFileLines = filename =>
+  fs
+    .readFileSync(filename)
+    .toString('UTF8')
+    .split('\n');
+```
+
+```js
+/*
+contents of test.txt :
+  line1
+  line2
+  line3
+  ___________________________
+*/
+let arr = readFileLines('test.txt');
+console.log(arr); // ['line1', 'line2', 'line3']
+```