[web-client] simple theme: vite plugins plg_svg2png & plg_svg2svg

Signed-off-by: Markus Heiser <markus.heiser@darmarit.de>

client/simple/tools/plg.js

@@ -0,0 +1,41 @@
+/**
+ * Custom vite plugins to build the web-client components of the simple theme.
+ *
+ * HINT:
+ *
+ *   This is an inital implementation for the migration of the build process
+ *   from grunt to vite.  For fully support (vite: build & serve) more work is
+ *   needed.
+ */
+
+import { svg2png } from "./img.js";
+import { svg2svg } from "./img.js";
+
+/**
+ * Vite plugin to convert a list of SVG files to PNG.
+ *
+ * @param {import('./img.js').Src2Dest} items - Array of SVG files (src: SVG, dest:PNG) to convert.
+ */
+function plg_svg2png(items) {
+  return {
+    name: 'searxng-simple-svg2png',
+    apply: 'build', // or 'serve'
+    async writeBundle() { svg2png(items); },
+  };
+}
+
+/**
+ * Vite plugin to optimize SVG images for WEB.
+ *
+ * @param {import('svgo').Config} svgo_opts - Options passed to svgo.
+ * @param {import('./img.js').Src2Dest} items - Array of SVG files (src:SVG, dest:SVG) to optimize.
+ */
+function plg_svg2svg(svgo_opts, items) {
+  return {
+    name: 'searxng-simple-svg2png',
+    apply: 'build', // or 'serve'
+    async writeBundle() { svg2svg(items, svgo_opts); },
+  };
+}
+
+export { plg_svg2png, plg_svg2svg };