Hooks like `useEffect` or `useLayoutEffect` will _never_ have names, so if a the only hooks for a given source file are these "unnamed" built-in hooks, we should skip loading the source code.
}
    const locationKey = getHookSourceLocationKey(hookSource);
    const hookSourceData = locationKeyToHookSourceData.get(locationKey);
    if (!hookSourceData) {
      return null; 
    }
    const {lineNumber, columnNumber} = hookSource;
    if (!lineNumber || !columnNumber) {
      return null; 
    }
    const sourceConsumer = hookSourceData.sourceConsumer;
    let originalSourceColumnNumber;
    let originalSourceLineNumber;
    if (areSourceMapsAppliedToErrors() || !sourceConsumer) {
      
      
      
      originalSourceColumnNumber = columnNumber;
      originalSourceLineNumber = lineNumber;
    } else {
      const position = sourceConsumer.originalPositionFor({
        line: lineNumber,
        
        
        column: columnNumber - 1,
      });
      originalSourceColumnNumber = position.column;
      originalSourceLineNumber = position.line;
    }
    if (__DEBUG__) {