babel-errors

Nicer error messages for Babel

import createBabelFile from 'babel-file';
import {BabelError, prettyError, buildCodeFrameError} from 'babel-errors';

const file = createBabelFile(...);

let path = file.path;
let {line, column} = path.loc.start;

throw prettyError(createErrorWithLoc('Error at this position', line, column));
throw buildCodeFrameError(path, 'Error with this Path');

createErrorWithLoc(message, line, column)

This lets you add location information to your errors.

wrapErrorWithCodeFrame(err)

You can use this when capturing errors thrown by Babel or constructed using createErrorWithLoc to add a code frame when possible.

buildCodeFrameError(path, message)

You can use this to build a code frame error around a path with a specified message.

Use this instead of path.buildCodeFrameError when you aren't running inside a Babel plugin.

toErrorStack(error)

Creates string with error name, message, stack/code frame.