From 423084cc8b7a4b790ca5acce157f6615b6cc4fc3 Mon Sep 17 00:00:00 2001
From: Vincent <dvincdt@gmail.com>
Date: Sun, 4 Oct 2020 08:45:43 +0200
Subject: [PATCH 1/3] feat: add `slugify` and use const in `yesterday`

---
 snippets/slugify.md   | 27 +++++++++++++++++++++++++++
 snippets/yesterday.md |  2 +-
 2 files changed, 28 insertions(+), 1 deletion(-)
 create mode 100644 snippets/slugify.md

diff --git a/snippets/slugify.md b/snippets/slugify.md
new file mode 100644
index 000000000..4bd803463
--- /dev/null
+++ b/snippets/slugify.md
@@ -0,0 +1,27 @@
+---
+title: slugify
+tags: function,intermediate
+---
+
+Convert a string to a URL-friendly slug.
+
+- Make the string lowercase and remove leading or trailing whitespace.
+- Remove all characters that are not words, whitespace or hyphens.
+- Replace whitespace with a single hyphen (`-`).
+- Remove any leading or trailing hyphens.
+
+```js
+const slugify = (string) => {
+  const slug = string
+    .toLowerCase()
+    .trim()
+    .replace(/[^\w\s-]/g, '')
+    .replace(/[\s_-]+/g, '-')
+    .replace(/^-+|-+$/g, '');
+  return slug;
+};
+```
+
+```js
+slugify('Hello World!'); // 'hello-world'
+```
diff --git a/snippets/yesterday.md b/snippets/yesterday.md
index b343d4cb7..8fd6d3088 100644
--- a/snippets/yesterday.md
+++ b/snippets/yesterday.md
@@ -10,7 +10,7 @@ Results in a string representation of yesterday's date.
 
 ```js
 const yesterday = () => {
-  let t = new Date();
+  const t = new Date();
   t.setDate(t.getDate() - 1);
   return t.toISOString().split('T')[0];
 };

From 0c705c1936bec47cf274ff1efed080304d08126c Mon Sep 17 00:00:00 2001
From: Angelos Chalaris <chalarangelo@gmail.com>
Date: Sun, 4 Oct 2020 10:30:14 +0300
Subject: [PATCH 2/3] Update yesterday.md

---
 snippets/yesterday.md | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/snippets/yesterday.md b/snippets/yesterday.md
index 8fd6d3088..b343d4cb7 100644
--- a/snippets/yesterday.md
+++ b/snippets/yesterday.md
@@ -10,7 +10,7 @@ Results in a string representation of yesterday's date.
 
 ```js
 const yesterday = () => {
-  const t = new Date();
+  let t = new Date();
   t.setDate(t.getDate() - 1);
   return t.toISOString().split('T')[0];
 };

From 68dd9e2966d427ea8d34fbac291f6d60d254216d Mon Sep 17 00:00:00 2001
From: Angelos Chalaris <chalarangelo@gmail.com>
Date: Sun, 4 Oct 2020 10:36:38 +0300
Subject: [PATCH 3/3] Update slugify.md

---
 snippets/slugify.md | 16 ++++++----------
 1 file changed, 6 insertions(+), 10 deletions(-)

diff --git a/snippets/slugify.md b/snippets/slugify.md
index 4bd803463..75b6962d2 100644
--- a/snippets/slugify.md
+++ b/snippets/slugify.md
@@ -1,25 +1,21 @@
 ---
 title: slugify
-tags: function,intermediate
+tags: string,regexp,intermediate
 ---
 
-Convert a string to a URL-friendly slug.
+Converts a string to a URL-friendly slug.
 
-- Make the string lowercase and remove leading or trailing whitespace.
-- Remove all characters that are not words, whitespace or hyphens.
-- Replace whitespace with a single hyphen (`-`).
-- Remove any leading or trailing hyphens.
+- Use `String.prototype.toLowerCase()` and `String.prototype.trim()` to normalize the string.
+- Use `String.prototype.replace()` to replace spaces, dashes and underscores with `-` and remove special characters.
 
 ```js
-const slugify = (string) => {
-  const slug = string
+const slugify = str =>
+  str
     .toLowerCase()
     .trim()
     .replace(/[^\w\s-]/g, '')
     .replace(/[\s_-]+/g, '-')
     .replace(/^-+|-+$/g, '');
-  return slug;
-};
 ```
 
 ```js