Add utility methods

whyyn0tt · Nov 8, 2023 · 34a5c77 · 34a5c77
1 parent 8caa8a5
commit 34a5c77
Show file tree

Hide file tree

Showing 2 changed files with 16 additions and 0 deletions.
diff --git a/src/utils/array.js b/src/utils/array.js
@@ -0,0 +1,10 @@
+const groupBy = (array, keyGetter) => {
+	return array.reduce((map, item) => {
+		const key = keyGetter(item)
+		map[key] = map[key] || []
+		map[key].push(item)
+		return map
+	}, {})
+}
+
+export { groupBy }
diff --git a/src/utils/number.js b/src/utils/number.js
@@ -0,0 +1,6 @@
+const round = (number, precision) => {
+	const factor = Math.pow(10, precision)
+	return Math.round(number * factor) / factor
+}
+
+export { round }