node/test/es-module/test-esm-import-assertion-errors.mjs

import { expectWarning } from '../common/index.mjs';
import { rejects } from 'assert';

const jsModuleDataUrl = 'data:text/javascript,export{}';
const jsonModuleDataUrl = 'data:application/json,""';

expectWarning(
  'ExperimentalWarning',
  'Import assertions are not a stable feature of the JavaScript language. ' +
  'Avoid relying on their current behavior and syntax as those might change ' +
  'in a future version of Node.js.'
);


await rejects(
  // This rejects because of the unsupported MIME type, not because of the
  // unsupported assertion.
  import('data:text/css,', { assert: { type: 'css' } }),
  { code: 'ERR_UNKNOWN_MODULE_FORMAT' }
);

await rejects(
  import(`data:text/javascript,import${JSON.stringify(jsModuleDataUrl)}assert{type:"json"}`),
  { code: 'ERR_IMPORT_ASSERTION_TYPE_FAILED' }
);

await rejects(
  import(jsModuleDataUrl, { assert: { type: 'json' } }),
  { code: 'ERR_IMPORT_ASSERTION_TYPE_FAILED' }
);

await rejects(
  import(import.meta.url, { assert: { type: 'unsupported' } }),
  { code: 'ERR_IMPORT_ASSERTION_TYPE_UNSUPPORTED' }
);

await rejects(
  import(jsonModuleDataUrl),
  { code: 'ERR_IMPORT_ASSERTION_TYPE_MISSING' }
);

await rejects(
  import(jsonModuleDataUrl, { assert: {} }),
  { code: 'ERR_IMPORT_ASSERTION_TYPE_MISSING' }
);

await rejects(
  import(jsonModuleDataUrl, { assert: { foo: 'bar' } }),
  { code: 'ERR_IMPORT_ASSERTION_TYPE_MISSING' }
);

await rejects(
  import(jsonModuleDataUrl, { assert: { type: 'unsupported' }}),
  { code: 'ERR_IMPORT_ASSERTION_TYPE_UNSUPPORTED' }
);