Add a @cubing/icons/js entry point, transpiled via TypeScript.

For a discussion of tradeoffs, see: #146

js/index.d.ts

@@ -0,0 +1 @@
+import "../dist/lib/@cubing/icons/js/ts/index.d.ts";

js/index.js

@@ -0,0 +1 @@
+import "../dist/lib/@cubing/icons/js/ts/index.js";

package.json

@@ -19,7 +19,8 @@
 		"@types/bun": "^1.1.14",
 		"@types/jsdom": "^21.1.7",
 		"fantasticon": "^3.0.0",
-		"jsdom": "^25.0.1"
+		"jsdom": "^25.0.1",
+		"typescript": "^5.7.3"
 	},
 	"exports": {
 		".": {
@@ -28,6 +29,10 @@
 		"./css": {
 			"default": "./dist/lib/@cubing/icons/cubing-icons.css"
 		},
+		"./js": {
+			"types": "./dist/lib/@cubing/icons/js/ts/index.d.ts",
+			"default": "./dist/lib/@cubing/icons/js/ts/index.js"
+		},
 		"./ts": {
 			"default": "./ts/index.ts"
 		}

script/build-lib.ts

@@ -1,5 +1,6 @@
 import { mkdir, readFile, writeFile } from "node:fs/promises";
 import { join } from "node:path";
+import { $ } from "bun";
 import { FontAssetType, OtherAssetType, generateFonts } from "fantasticon";
 
 const LIB_OUTPUT_DIR = "dist/lib/@cubing/icons";
@@ -29,4 +30,14 @@ await writeFile(
     ),
 );
 
+// This places output files in an awkward directory structure, but it keeps our
+// transpilation setup as simple as possible. The alternatives come with
+// potentially heavy tradeoffs: https://github.com/cubing/icons/issues/146
+await $`bun x tsc \
+  --skipLibCheck \
+  --declaration \
+  --target es2022 \
+  --outdir ./dist/lib/@cubing/icons/js \
+  ./ts/index.ts`;
+
 console.log(`The library has been built at: ${LIB_OUTPUT_DIR}`);