createVariableDeclarator() — react Function Reference

Source Code

compiler/packages/babel-plugin-react-compiler/src/ReactiveScopes/CodegenReactiveFunction.ts lines 1550–1573

function createVariableDeclarator(
  id: t.LVal,
  init?: t.Expression | null,
): t.VariableDeclarator {
  const node = t.variableDeclarator(id, init);

  /*
   * The variable declarator location is not preserved in HIR, however, we can use the
   * start location of the id and the end location of the init to recreate the
   * exact original variable declarator location.
   *
   * Or if init is null, we likely have a declaration without an initializer, so we can use the id.loc.end as the end location.
   */
  if (id.loc && (init === null || init?.loc)) {
    node.loc = {
      start: id.loc.start,
      end: init?.loc?.end ?? id.loc.end,
      filename: id.loc.filename,
      identifierName: undefined,
    };
  }

  return node;
}