nameAnonymousFunctions() — react Function Reference

Source Code

compiler/packages/babel-plugin-react-compiler/src/Transform/NameAnonymousFunctions.ts lines 15–44

export function nameAnonymousFunctions(fn: HIRFunction): void {
  if (fn.id == null) {
    return;
  }
  const parentName = fn.id;
  const functions = nameAnonymousFunctionsImpl(fn);
  function visit(node: Node, prefix: string): void {
    if (node.generatedName != null && node.fn.nameHint == null) {
      /**
       * Note that we don't generate a name for functions that already had one,
       * so we'll only add the prefix to anonymous functions regardless of
       * nesting depth.
       */
      const name = `${prefix}${node.generatedName}]`;
      node.fn.nameHint = name;
      node.fn.loweredFunc.func.nameHint = name;
    }
    /**
     * Whether or not we generated a name for the function at this node,
     * traverse into its nested functions to assign them names
     */
    const nextPrefix = `${prefix}${node.generatedName ?? node.fn.name ?? '<anonymous>'} > `;
    for (const inner of node.inner) {
      visit(inner, nextPrefix);
    }
  }
  for (const node of functions) {
    visit(node, `${parentName}[`);
  }
}