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snippets/js/s/expand-tabs.md

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+---
+title: Expand tabs into spaces
+type: snippet
+language: javascript
+tags: [string,regexp]
+author: chalarangelo
+cover: houses-rock-sea
+dateModified: 2020-09-15T16:28:04+03:00
+---
+
+Convert tabs to spaces, where each tab corresponds to `count` spaces.
+
+- Use `String.prototype.replace()` with a regular expression and `String.prototype.repeat()` to replace each tab character with `count` spaces.
+
+```js
+const expandTabs = (str, count) => str.replace(/\t/g, ' '.repeat(count));
+```
+
+```js
+expandTabs('\t\tlorem', 3); // '      lorem'
+```