added unit testing, and started implementing unit tests...phew

node_modules/logform/json.js

@@ -0,0 +1,26 @@
+'use strict';
+
+const format = require('./format');
+const { MESSAGE } = require('triple-beam');
+const jsonStringify = require('fast-safe-stringify');
+
+/*
+ * function replacer (key, value)
+ * Handles proper stringification of Buffer output.
+ */
+function replacer(key, value) {
+  return value instanceof Buffer
+    ? value.toString('base64')
+    : value;
+}
+
+/*
+ * function json (info)
+ * Returns a new instance of the JSON format that turns a log `info`
+ * object into pure JSON. This was previously exposed as { json: true }
+ * to transports in `winston < 3.0.0`.
+ */
+module.exports = format((info, opts = {}) => {
+  info[MESSAGE] = jsonStringify(info, opts.replacer || replacer, opts.space);
+  return info;
+});