Replace tinycolor2 with colord (#36673)

[`colord`](https://github.com/omgovich/colord) is significantly smaller
than [`tinycolor2`](https://github.com/bgrins/TinyColor) (~4KB vs ~29KB
minified) and ships its own TypeScript types, removing the need for
`@types/tinycolor2`.

Behaviour is exactly the same for our use cases. By using `.alpha(1)` we
force the function to always output 6-digit hex format (it would output
8-digit for non-opaque colors).

---------

Signed-off-by: silverwind <me@silverwind.io>
Co-authored-by: Claude Opus 4.6 <noreply@anthropic.com>

Author: silverwind

package.json

@@ -52,7 +52,7 @@
     "swagger-ui-dist": "5.31.1",
     "tailwindcss": "3.4.17",
     "throttle-debounce": "5.0.2",
-    "tinycolor2": "1.6.0",
+    "colord": "2.9.3",
     "tippy.js": "6.3.7",
     "toastify-js": "1.12.0",
     "tributejs": "5.1.3",
@@ -82,7 +82,6 @@
     "@types/sortablejs": "1.15.9",
     "@types/swagger-ui-dist": "3.30.6",
     "@types/throttle-debounce": "5.0.2",
-    "@types/tinycolor2": "1.4.6",
     "@types/toastify-js": "1.12.4",
     "@typescript-eslint/parser": "8.56.0",
     "@vitejs/plugin-vue": "6.0.4",

pnpm-lock.yaml

@@ -1,4 +1,4 @@
-import tinycolor from 'tinycolor2';
+import {colord} from 'colord';
 import {basename, extname, isObject, isDarkTheme} from '../utils.ts';
 import {onInputDebounce} from '../utils/dom.ts';
 import type MonacoNamespace from 'monaco-editor';
@@ -94,7 +94,7 @@ function updateTheme(monaco: Monaco): void {
   // https://github.com/microsoft/monaco-editor/issues/2427
   // also, monaco can only parse 6-digit hex colors, so we convert the colors to that format
   const styles = window.getComputedStyle(document.documentElement);
-  const getColor = (name: string) => tinycolor(styles.getPropertyValue(name).trim()).toString('hex6');
+  const getColor = (name: string) => colord(styles.getPropertyValue(name).trim()).alpha(1).toHex();
 
   monaco.editor.defineTheme('gitea', {
     base: isDarkTheme() ? 'vs-dark' : 'vs',

web_src/js/features/codeeditor.ts

@@ -1,22 +1,21 @@
-import tinycolor from 'tinycolor2';
-import type {ColorInput} from 'tinycolor2';
+import {colord} from 'colord';
+import type {AnyColor} from 'colord';
 
 /** Returns relative luminance for a SRGB color - https://en.wikipedia.org/wiki/Relative_luminance */
 // Keep this in sync with modules/util/color.go
-function getRelativeLuminance(color: ColorInput): number {
-  const {r, g, b} = tinycolor(color).toRgb();
+function getRelativeLuminance(color: AnyColor): number {
+  const {r, g, b} = colord(color).toRgb();
   return (0.2126729 * r + 0.7151522 * g + 0.072175 * b) / 255;
 }
 
-function useLightText(backgroundColor: ColorInput): boolean {
+function useLightText(backgroundColor: AnyColor): boolean {
   return getRelativeLuminance(backgroundColor) < 0.453;
 }
 
-/** Given a background color, returns a black or white foreground color that the highest
- *  contrast ratio. */
+/** Given a background color, returns a black or white foreground color with the highest contrast ratio. */
 // In the future, the APCA contrast function, or CSS `contrast-color` will be better.
 // https://github.com/color-js/color.js/blob/eb7b53f7a13bb716ec8b28c7a56f052cd599acd9/src/contrast/APCA.js#L42
-export function contrastColor(backgroundColor: ColorInput): string {
+export function contrastColor(backgroundColor: AnyColor): string {
   return useLightText(backgroundColor) ? '#fff' : '#000';
 }