Reworked support for processing

demo/main/binding.yaml

@@ -0,0 +1,3 @@
+markdownKey: description
+processors:
+  - ./processors/scream.js

demo/main/processors/scream.js

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+export const name = "Scream";
+export function process(binding, opts) {
+  const modifiedEntries = binding.entries.map(entry => {
+    if (binding.markdownKey in entry.data) {
+      entry.data = {
+        ...entry.data,
+        [binding.markdownKey]: entry.data[binding.markdownKey].toUpperCase()
+      }
+    }
+
+    return entry;
+  });
+
+  return {
+    ...binding,
+    entries: modifiedEntries
+  };
+}

demo/main/stats/statistics.toml

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+slamDunks = 100

demo/main/stories/a-neat-story.md

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+---
+published: true
+---
+
+This is a neat story I wrote!