working rss feed to nostr publish

node_modules/es5-ext/string/#/code-point-at/shim.js

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+// Based on: https://github.com/mathiasbynens/String.prototype.codePointAt
+// Thanks @mathiasbynens !
+
+"use strict";
+
+var toInteger  = require("../../../number/to-integer")
+  , validValue = require("../../../object/valid-value");
+
+module.exports = function (pos) {
+	var str = String(validValue(this)), length = str.length, first, second;
+	pos = toInteger(pos);
+
+	// Account for out-of-bounds indices:
+	if (pos < 0 || pos >= length) return undefined;
+
+	// Get the first code unit
+	first = str.charCodeAt(pos);
+	if (first >= 0xd800 && first <= 0xdbff && length > pos + 1) {
+		second = str.charCodeAt(pos + 1);
+		if (second >= 0xdc00 && second <= 0xdfff) {
+			// http://mathiasbynens.be/notes/javascript-encoding#surrogate-formulae
+			return (first - 0xd800) * 0x400 + second - 0xdc00 + 0x10000;
+		}
+	}
+	return first;
+};