fix(console): correct the parseCssColor algorithm (#19645)

This is a fix for issue #19644, concerning the `parseCssColor` function
in the file `ext/console/01_console.js`. Changes made on lines
2756-2758. To sum it up:

> The internal `parseCssColor` function currently parses 3/4-digit hex
colors incorrectly. For example, it parses the string `#FFFFFF` as
`[255, 255, 255]` (as expected), but returns `[240, 240, 240]` for
`#FFF`, when it should return the same triplet as the former.

While it's not going to cause a fatal runtime error, it did bug me
enough to fix it real quick.

1 files changed, 6 insertions, 3 deletions

diff --git a/cli/tests/unit/console_test.ts b/cli/tests/unit/console_test.ts
index 8543541af..7dac7ca77 100644
--- a/cli/tests/unit/console_test.ts
+++ b/cli/tests/unit/console_test.ts
@@ -1152,9 +1152,12 @@ Deno.test(function consoleParseCssColor() {
   assertEquals(parseCssColor("darkmagenta"), [139, 0, 139]);
   assertEquals(parseCssColor("slateblue"), [106, 90, 205]);
   assertEquals(parseCssColor("#ffaa00"), [255, 170, 0]);
-  assertEquals(parseCssColor("#ffaa00"), [255, 170, 0]);
-  assertEquals(parseCssColor("#18d"), [16, 128, 208]);
-  assertEquals(parseCssColor("#18D"), [16, 128, 208]);
+  assertEquals(parseCssColor("#ffAA00"), [255, 170, 0]);
+  assertEquals(parseCssColor("#fa0"), [255, 170, 0]);
+  assertEquals(parseCssColor("#FA0"), [255, 170, 0]);
+  assertEquals(parseCssColor("#18d"), [17, 136, 221]);
+  assertEquals(parseCssColor("#18D"), [17, 136, 221]);
+  assertEquals(parseCssColor("#1188DD"), [17, 136, 221]);
   assertEquals(parseCssColor("rgb(100, 200, 50)"), [100, 200, 50]);
   assertEquals(parseCssColor("rgb(+100.3, -200, .5)"), [100, 0, 1]);
   assertEquals(parseCssColor("hsl(75, 60%, 40%)"), [133, 163, 41]);