Merge pull request #43 from hexagonhexagon/number-formatting

Better big number formatting

src/js/core/utils.js

@@ -24,9 +24,7 @@ export const BOTTOM = new Vector(0, 1);
 export const LEFT = new Vector(-1, 0);
 export const ALL_DIRECTIONS = [TOP, RIGHT, BOTTOM, LEFT];
 
-export const thousand = 1000;
-export const million = 1000 * 1000;
-export const billion = 1000 * 1000 * 1000;
+const bigNumberSuffixTranslationKeys = ["thousands", "millions", "billions", "trillions"];
 
 /**
  * Returns the build id
@@ -435,21 +433,20 @@ export function formatBigNumber(num, divider = ".") {
 
     if (num < 1000) {
         return sign + "" + num;
+    } else {
+        let leadingDigits = num;
+        let suffix = "";
+        for (let suffixIndex = 0; suffixIndex < bigNumberSuffixTranslationKeys.length; ++suffixIndex) {
+            leadingDigits = leadingDigits / 1000;
+            suffix = T.global.suffix[bigNumberSuffixTranslationKeys[suffixIndex]];
+            if (leadingDigits < 1000) {
+                break;
             }
-    if (num > 10000) {
-        return Math_floor(num / 1000.0) + "k";
         }
-
-    let rest = num;
-    let out = "";
-
-    while (rest >= 1000) {
-        out = (rest % 1000).toString().padStart(3, "0") + (out !== "" ? divider : "") + out;
-        rest = Math_floor(rest / 1000);
+        const leadingDigitsRounded = round1Digit(leadingDigits);
+        const leadingDigitsNoTrailingDecimal = leadingDigitsRounded.toString().replace(".0", "");
+        return sign + leadingDigitsNoTrailingDecimal + suffix;
     }
-
-    out = rest + divider + out;
-    return sign + out;
 }
 
 /**

translations/base-en.yaml

@@ -26,6 +26,13 @@ global:
     # How big numbers are rendered, e.g. "10,000"
     thousandsDivider: ","
 
+    # The suffix for large numbers, e.g. 1.3k, 400.2M, etc.
+    suffix:
+        thousands: k
+        millions: M
+        billions: B
+        trillions: T
+
     # Shown for infinitely big numbers
     infinite: inf