Add xml2js fuzzer

examples/xml2js/fuzz.js

@@ -0,0 +1,34 @@
+const xml2js = require('xml2js')
+
+async function fuzz (bytes) {
+  const string = String.fromCodePoint(...bytes)
+  try {
+    await xml2js.parseStringPromise(string)
+  } catch (error) {
+    if (!acceptable(error)) throw error
+  }
+}
+
+function acceptable (error) {
+  return !!expected
+    .find(message => error.message.startsWith(message))
+}
+
+const expected = [
+  'Non-whitespace before first tag',
+  'Unencoded',
+  'Unexpected end',
+  'Invalid character',
+  'Invalid attribute name',
+  'Invalid tagname',
+  'Unclosed root tag',
+  'Attribute without value',
+  'Forward-slash in opening tag',
+  'Text data outside of root node',
+  'Unquoted attribute value',
+  'Unmatched closing tag',
+  'No whitespace between attributes',
+  'Unexpected close tag'
+]
+
+exports.fuzz = fuzz

examples/xml2js/package.json

@@ -0,0 +1,9 @@
+{
+    "name": "xml2js-fuzz",
+    "version": "1.0.0",
+    "main": "fuzz.js",
+    "license": "ISC",
+    "dependencies": {
+        "xml2js": "^0.4.22"
+    }
+}