src/Error/Error.php
public static function createLocatedError($error, $nodes = null, $path = null)
    {
        if ($error instanceof self) {
            if ($error->path && $error->nodes) {
                return $error;
            }

            $nodes = $nodes ?: $error->nodes;
            $path  = $path ?: $error->path;
        }

        $source     = $positions = $originalError = null;
        $extensions = [];

        if ($error instanceof self) {
            $message       = $error->getMessage();
            $originalError = $error;
            $nodes         = $error->nodes ?: $nodes;
            $source        = $error->source;
            $positions     = $error->positions;
            $extensions    = $error->extensions;
        } elseif ($error instanceof Exception || $error instanceof Throwable) {
            $message       = $error->getMessage();
            $originalError = $error;
        } else {
            $message = (string) $error;
        }

        return new static(
            $message ?: 'An unknown error occurred.',
            $nodes,
            $source,
            $positions,
            $path,
            $originalError,
            $extensions
        );
    }
public static function createLocatedError($error, $nodes = null, $path = null)
    {
        if ($error instanceof self) {
            if ($error->path && $error->nodes) {
                return $error;
            }

            $nodes = $nodes ?: $error->nodes;
            $path  = $path ?: $error->path;
        }

        $source     = $positions = $originalError = null;
        $extensions = [];

        if ($error instanceof self) {
            $message       = $error->getMessage();
            $originalError = $error;
            $nodes         = $error->nodes ?: $nodes;
            $source        = $error->source;
            $positions     = $error->positions;
            $extensions    = $error->extensions;
        } elseif ($error instanceof Exception || $error instanceof Throwable) {
            $message       = $error->getMessage();
            $originalError = $error;
        } else {
            $message = (string) $error;
        }

        return new static(
            $message ?: 'An unknown error occurred.',
            $nodes,
            $source,
            $positions,
            $path,
            $originalError,
            $extensions
        );
    }
Given an arbitrary Error, presumably thrown while attempting to execute a
GraphQL operation, produce a new GraphQLError aware of the location in the
document responsible for the original Error.

@param mixed        $error
@param Node[]|null  $nodes
@param mixed[]|null $path

@return Error