initial project setup

src/util/pluralism.ts

@@ -0,0 +1,37 @@
+// Copyright (c) Microsoft Corporation
+// Licensed under the MIT license.
+
+/**
+ * Provides an alternative name for anonymous TypeSpec.Array elements.
+ * @param typeName
+ * @returns
+ */
+export function getArrayElementName(typeName: string): string {
+  return typeName + "Element";
+}
+
+/**
+ * Provides an alternative name for anonymous TypeSpec.Record values.
+ * @param typeName
+ * @returns
+ */
+export function getRecordValueName(typeName: string): string {
+  return typeName + "Value";
+}
+
+/**
+ * Produces the name of an array type for a given base type.
+ *
+ * If the type name is a simple identifier, this will use the `[]` syntax,
+ * otherwise it will use the `Array<>` type constructor.
+ *
+ * @param typeName - the base type to make an array of
+ * @returns a good representation of an array of the base type
+ */
+export function asArrayType(typeName: string): string {
+  if (/^[a-zA-Z_]+$/.test(typeName)) {
+    return typeName + "[]";
+  } else {
+    return `Array<${typeName}>`;
+  }
+}