import from work where it works. kinda.

main.mjs

@@ -0,0 +1,52 @@
+import { argv } from 'node:process';
+
+const grades = [
+	{
+		grade: 'A1', min: 91, max: 100
+	},
+	{
+		grade: 'A2', min: 81, max: 90
+	},
+	{
+		grade: 'B1', min: 71, max: 80
+	},
+	{
+		grade: 'B2', min: 61, max: 70
+	},
+	{
+		grade: 'C1', min: 51, max: 60
+	},
+	{
+		grade: 'C2', min: 41, max: 50
+	},
+	{
+		grade: 'D', min: 33, max: 40
+	},
+	{
+		grade: 'E', min: 0, max: 32
+	}
+]
+
+function getGrade(mark){
+	if (typeof(mark) != 'number')
+	for (let i=0;i<=grades.length-1;i++){
+		const {max} = grades[i]
+		console.log({i,max})
+
+		if (max > mark) continue
+
+		for (let j=i;j>0;j--) {
+			const {min,grade} = grades[j]
+		console.log({j,min})
+			if (mark < min) continue
+			return grade
+		}
+	}
+	return 'Ab'
+	//const [{grade}] = grades.filter(({max,min}) => mark <= max && mark >= min)
+	//return grade
+}
+
+
+const grade = getGrade(argv[2])
+console.log(grade)