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✏️ Editing: exception.js

const errorProps = ['description', 'fileName', 'lineNumber', 'endLineNumber', 'message', 'name', 'number', 'stack'];

function Exception(message, node) {
  let loc = node && node.loc,
      line,
      endLineNumber,
      column,
      endColumn;

if (loc) {
    line = loc.start.line;
    endLineNumber = loc.end.line;
    column = loc.start.column;
    endColumn = loc.end.column;

message += ' - ' + line + ':' + column;
  }

let tmp = Error.prototype.constructor.call(this, message);

// Unfortunately errors are not enumerable in Chrome (at least), so `for prop in tmp` doesn't work.
  for (let idx = 0; idx < errorProps.length; idx++) {
    this[errorProps[idx]] = tmp[errorProps[idx]];
  }

/* istanbul ignore else */
  if (Error.captureStackTrace) {
    Error.captureStackTrace(this, Exception);
  }

try {
    if (loc) {
      this.lineNumber = line;
      this.endLineNumber = endLineNumber;

// Work around issue under safari where we can't directly set the column value
      /* istanbul ignore next */
      if (Object.defineProperty) {
        Object.defineProperty(this, 'column', {
          value: column,
          enumerable: true
        });
        Object.defineProperty(this, 'endColumn', {
          value: endColumn,
          enumerable: true
        });
      } else {
        this.column = column;
        this.endColumn = endColumn;
      }
    }
  } catch (nop) {
    /* Ignore if the browser is very particular */
  }
}

Exception.prototype = new Error();

export default Exception;

MR SKB