From 7c38dae658cb92a8b30600ec3a0caccc1875b0fe Mon Sep 17 00:00:00 2001
From: KoroLion <korolion31@yandex.ru>
Date: Fri, 28 May 2021 17:34:57 +0300
Subject: [PATCH] now

---
 src/now.js | 44 ++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 44 insertions(+)
 create mode 100644 src/now.js

diff --git a/src/now.js b/src/now.js
new file mode 100644
index 0000000..f449dbd
--- /dev/null
+++ b/src/now.js
@@ -0,0 +1,44 @@
+// Реализовать метод `now`:
+//  - now() — вернет текущий timestamp
+//  - now('+min'); — `сейчас + 1 минута`
+//  - now('-3.5h'); — или `сейчас - 3.5 часа`
+//
+// Поддерживаемые форматы:
+//   `ms`, `s`, `sec`, `m`, `min`, `h`, `hours` & etc.
+
+const typeToMultDict = {
+    'ms':    1,
+    's':     1000,
+    'sec':   1000,
+    'm':     1000 * 60,
+    'min':   1000 * 60,
+    'h':     1000 * 60 * 60,
+    'hours': 1000 * 60 * 60,
+    'etc':   1 // if you need more - extend this dict =)
+}
+
+function typeToMult(type) {
+    let mult = typeToMultDict[type];
+    if (!mult) {
+        mult = 1;
+    }
+    return mult;
+}
+
+function now(v) {
+    let amount = 0;
+    let mult = 1;
+    if (v) {
+        v = v.trim();
+        amount = parseFloat(v)
+        let len = amount.toString().length;
+        if (amount >= 0) {
+            len++;
+        }
+        const type = v.slice(len).trim();
+        mult = typeToMult(type);
+    }
+	return Date.now() + amount * mult;
+}
+
+console.log(now('+30min')); // Date.now() + 30 * 60 * 1000