fix: node 6 compatibility, take 2 (#353)

ricokahler · Feb 23, 2021 · c3bf3b0 · c3bf3b0
1 parent edb2e01
commit c3bf3b0
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Showing 2 changed files with 13 additions and 2 deletions.
diff --git a/src/parseToRgba.ts b/src/parseToRgba.ts
@@ -73,7 +73,7 @@ const compressedColorMap = '1q29ehhb 1n09sgk7 1kl1ekf_ _yl4zsno 16z9eiv3 1p29lhp
     const key = colorToInt(next.substring(0, 3));
     const hex = colorToInt(next.substring(3)).toString(16);
 
-    // NOTE: pad start could be used here but it breaks Node 6 compat
+    // NOTE: padStart could be used here but it breaks Node 6 compat
     // https://github.com/ricokahler/color2k/issues/351
     let prefix = '';
     for (let i = 0; i < 6 - hex.length; i++) {

diff --git a/src/toHex.ts b/src/toHex.ts
@@ -6,7 +6,18 @@ import guard from './guard';
  */
 function toHex(color: string): string {
   const [r, g, b, a] = parseToRgba(color);
-  const hex = (x: number) => guard(0, 255, x).toString(16).padStart(2, '0');
+
+  let hex = (x: number) => {
+    const h = guard(0, 255, x).toString(16).padStart(2, '0');
+    // NOTE: padStart could be used here but it breaks Node 6 compat
+    // https://github.com/ricokahler/color2k/issues/351
+    let prefix = '';
+    for (let i = 0; i < 2 - h.length; i++) {
+      prefix += '0';
+    }
+    return `${prefix}${h}`;
+  };
+
   return `#${hex(r)}${hex(g)}${hex(b)}${a < 1 ? hex(Math.round(a * 255)) : ''}`;
 }