chore(typescript): Use tsutils isValidIdentifier

Author: sschw

plugins/typescript/src/core/schemaToEnumDeclaration.ts

@@ -1,33 +1,10 @@
 import { pascal } from "case";
 import { SchemaObject } from "openapi3-ts/oas30";
 import ts, { factory as f } from "typescript";
+import { isValidIdentifier } from "tsutils";
 import { convertNumberToWord } from "../utils/getEnumProperties";
 import { Context, getJSDocComment } from "./schemaToTypeAliasDeclaration";
 
-/**
- * Function to check if a string is a valid TypeScript identifier
- *
- * @param name Name to check
- */
-function isValidIdentifier(name: string): boolean {
-  if (name.length === 0) {
-    return false;
-  }
-
-  const firstChar = name.charCodeAt(0);
-  if (!ts.isIdentifierStart(firstChar, ts.ScriptTarget.Latest)) {
-    return false;
-  }
-
-  for (let i = 1; i < name.length; i++) {
-    if (!ts.isIdentifierPart(name.charCodeAt(i), ts.ScriptTarget.Latest)) {
-      return false;
-    }
-  }
-
-  return true;
-}
-
 /**
  * Add Enum support when transforming an OpenAPI Schema Object to Typescript Nodes.
  *