uri_with_interpolation

URIs can't use string interpolation.

The analyzer produces this diagnostic when the string literal in an import, export, or part directive contains an interpolation. The resolution of the URIs in directives must happen before the declarations are compiled, so expressions can't be evaluated while determining the values of the URIs.

The following code produces this diagnostic because the string in the import directive contains an interpolation:

import 'dart:$m';

const m = 'math';

Remove the interpolation from the URI:

import 'dart:math';

var zero = min(0, 0);

Unless stated otherwise, the documentation on this site reflects Dart 3.8.0. Page last updated on 2025-05-08. View source or report an issue.