fix: allow positional value placeholders

This check is unsafe: it will break if query contains “?” as a member of a string, e.g. SELECT “?”.

src/utilities/normalizeAnonymousValuePlaceholders.js

@@ -15,6 +15,15 @@ export default (
   sql: string,
   values: AnonymouseValuePlaceholderValuesType = []
 ): NormalizedQueryType => {
+  if (!anonymousePlaceholdersRegex.test(sql)) {
+    return {
+      sql,
+      values
+    };
+  }
+
+  anonymousePlaceholdersRegex.lastIndex = 0;
+
   let chunkIndex = 0;
   let result = '';
   let match;

test/utilities/normalizeAnonymousValuePlaceholders.js

@@ -15,6 +15,20 @@ test('does not error when placeholders are absent', (t) => {
   t.deepEqual(values, []);
 });
 
+test('does not error when passed values without anonymous placeholders', (t) => {
+  const {
+    sql,
+    values
+  } = normalizeAnonymousValuePlaceholders('SELECT $1', [
+    'foo'
+  ]);
+
+  t.true(sql === 'SELECT $1');
+  t.deepEqual(values, [
+    'foo'
+  ]);
+});
+
 test('interpolates a value placeholder', (t) => {
   const {
     sql,