Add toSentenceCase

snippets/toSentenceCase.md

@@ -0,0 +1,34 @@
+---
+title: Sentencecase string
+tags: string,regexp
+cover: sofia-tram
+author: chalarangelo
+firstSeen: 2023-03-27T05:00:00-04:00
+---
+
+Converts a string to sentence case.
+
+- Use `String.prototype.match()` to break the string into words using an appropriate regexp.
+- Use `Array.prototype.slice()`, `Array.prototype.join()` and `String.prototype.toUpperCase()` to combine them, capitalizing the first letter of the first word and adding a whitespace between them.
+
+```js
+const toSentenceCase = str => {
+  const s =
+    str &&
+    str
+      .match(
+        /[A-Z]{2,}(?=[A-Z][a-z]+[0-9]*|\b)|[A-Z]?[a-z]+[0-9]*|[A-Z]|[0-9]+/g
+      )
+      .join(' ');
+  return s.slice(0, 1).toUpperCase() + s.slice(1);
+};
+```
+
+```js
+toSentenceCase('some_database_field_name'); // 'Some database field name'
+toSentenceCase('Some label that needs to be title-cased');
+// 'Some label that needs to be title cased'
+toSentenceCase('some-package-name'); // 'Some package name'
+toSentenceCase('some-mixed_string with spaces_underscores-and-hyphens');
+// 'Some mixed string with spaces underscores and hyphens'
+```