Initial Save

node_modules/graphql/jsutils/didYouMean.js.flow

@@ -0,0 +1,39 @@
+// @flow strict
+
+const MAX_SUGGESTIONS = 5;
+
+/**
+ * Given [ A, B, C ] return ' Did you mean A, B, or C?'.
+ */
+declare function didYouMean(suggestions: $ReadOnlyArray<string>): string;
+// eslint-disable-next-line no-redeclare
+declare function didYouMean(
+  subMessage: string,
+  suggestions: $ReadOnlyArray<string>,
+): string;
+
+// eslint-disable-next-line no-redeclare
+export default function didYouMean(firstArg, secondArg) {
+  const [subMessage, suggestions] =
+    typeof firstArg === 'string'
+      ? [firstArg, secondArg]
+      : [undefined, firstArg];
+
+  let message = ' Did you mean ';
+  if (subMessage) {
+    message += subMessage + ' ';
+  }
+
+  switch (suggestions.length) {
+    case 0:
+      return '';
+    case 1:
+      return message + suggestions[0] + '?';
+    case 2:
+      return message + suggestions[0] + ' or ' + suggestions[1] + '?';
+  }
+
+  const selected = suggestions.slice(0, MAX_SUGGESTIONS);
+  const lastItem = selected.pop();
+  return message + selected.join(', ') + ', or ' + lastItem + '?';
+}