From 995a05f47ee40c109d2e0e3be8494c729aba346a Mon Sep 17 00:00:00 2001
From: Angelos Chalaris <chalarangelo@gmail.com>
Date: Mon, 1 Jan 2018 18:24:43 +0200
Subject: [PATCH] Add hasFlags

Check if the current process's arguments contain the specified flags.
---
 snippets/hasFlags.md | 21 +++++++++++++++++++++
 tag_database         |  1 +
 2 files changed, 22 insertions(+)
 create mode 100644 snippets/hasFlags.md

diff --git a/snippets/hasFlags.md b/snippets/hasFlags.md
new file mode 100644
index 000000000..124a72aac
--- /dev/null
+++ b/snippets/hasFlags.md
@@ -0,0 +1,21 @@
+### hasFlags
+
+Check if the current process's arguments contain the specified flags.
+
+Use `Array.every()` and `Array.includes()` to check if `process.argv` contains all the specified flags.
+Use a regular expression to test if the specified flags are prefixed with `-` or `--` and prefix them accordingly.
+
+```js
+const hasFlags = (...flags) =>
+  flags.every(flag => process.argv.includes(
+    /^-{1,2}/.test(flag) ? flag : '--' + flag
+  ));
+```
+
+```js
+// node myScript.js -s --test --cool=true
+hasFlags('-s'); // true
+hasFlags('test', 'cool=true'); // true
+hasFlags('--test', 'cool=true', '-s'); // true
+hasFlags('special'); // false
+```
diff --git a/tag_database b/tag_database
index e66052213..c4f3cd421 100644
--- a/tag_database
+++ b/tag_database
@@ -55,6 +55,7 @@ getURLParameters:utility
 groupBy:array
 hammingDistance:math
 hasClass:browser
+hasFlags:node
 head:array
 hexToRGB:utility
 hide:browser