Function identifierName

packages/compiler/src/parse_util.ts:209–233

(
  compileIdentifier: CompileIdentifierMetadata | null | undefined,
)

let _anonymousTypeIndex = 0;

export function identifierName(
  compileIdentifier: CompileIdentifierMetadata | null | undefined,
): string | null {
  if (!compileIdentifier || !compileIdentifier.reference) {
    return null;
  }
  const ref = compileIdentifier.reference;
  if (ref['__anonymousType']) {
    return ref['__anonymousType'];
  }
  if (ref['__forward_ref__']) {
    // We do not want to try to stringify a `forwardRef()` function because that would cause the
    // inner function to be evaluated too early, defeating the whole point of the `forwardRef`.
    return '__forward_ref__';
  }
  let identifier = stringify(ref);
  if (identifier.indexOf('(') >= 0) {
    // case: anonymous functions!
    identifier = `anonymous_${_anonymousTypeIndex++}`;
    ref['__anonymousType'] = identifier;
  } else {
    identifier = sanitizeIdentifier(identifier);
  }
  return identifier;
}

export interface CompileIdentifierMetadata {
  reference: any;