Fix ResourceQuotaDetails quotas display bugs (#5909)

src/common/utils/convertCpu.ts

@@ -3,18 +3,38 @@
  * Licensed under MIT License. See LICENSE in root directory for more information.
  */
 
+import { TypedRegEx } from "typed-regex";
+
 // Helper to convert CPU K8S units to numbers
 
-const thousand = 1000;
-const million = thousand * thousand;
-const shortBillion = thousand * million;
+const unitConverters = new Map([
+  ["n", 1000 ** -3],
+  ["u", 1000 ** -2],
+  ["m", 1000 ** -1], // milli
+  ["", 1000 ** 0], // no units
+  ["k", 1000 ** 1],
+  ["M", 1000 ** 2],
+  ["G", 1000 ** 3],
+  ["P", 1000 ** 4],
+  ["T", 1000 ** 5],
+  ["E", 1000 ** 6],
+]);
 
-export function cpuUnitsToNumber(cpu: string) {
-  const cpuNum = parseInt(cpu);
+const cpuUnitsRegex = TypedRegEx("^(?<digits>[+-]?[0-9.]+(e[-+]?[0-9]+)?)(?<unit>[EinumkKMGTP]*)$");
 
-  if (cpu.includes("m")) return cpuNum / thousand;
-  if (cpu.includes("u")) return cpuNum / million;
-  if (cpu.includes("n")) return cpuNum / shortBillion;
+export function cpuUnitsToNumber(value: string) {
+  const match = cpuUnitsRegex.captures(value);
 
-  return parseFloat(cpu);
+  if (!match) {
+    return undefined;
+  }
+
+  const { digits = "", unit } = match;
+  const conversion = unitConverters.get(unit);
+
+  if (conversion === undefined) {
+    return undefined;
+  }
+
+  return parseFloat(digits) * conversion;
 }