Factor data-to-JSON-string construction out of stitches.

This is a recurring and nameable operation; let's give it a name before we use it further.

1 files changed, 7 insertions, 0 deletions

diff --git a/ui/lib/swatch/json.js b/ui/lib/swatch/json.js
new file mode 100644
index 0000000..3ebbc0d
--- /dev/null
+++ b/ui/lib/swatch/json.js
@@ -0,0 +1,7 @@
+import { makeDeriver } from '$lib/swatch/derive.js';
+
+export const decode = makeDeriver(JSON.parse);
+
+export function encode(value) {
+  return JSON.stringify(value, /* replacer */ null, /* space */ 2);
+}