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import { assertStrictEquals } from 'https://deno.land/std@0.121.0/testing/asserts.ts';import * as path from 'https://deno.land/std@0.121.0/path/mod.ts';import * as fs from 'https://deno.land/std@0.121.0/fs/mod.ts';
/** * Setup snapshot directory and file and dynamically import as ES Module. * * The imported module can have a number of named exports to compare. * If not, it will write the string version of `actual` to it. * * _**PLEASE REVIEW TO THE CHANGES CAREFULLY.**_ * * @param file The current test file, it should always be `import.meta.url`. * @returns (actual, name) function * - `actual` should be the actual object to stringify. * - `name` to use as the named export in the snapshot module. * * ```ts * import { setupSnapshot } from 'https://deno.land/x/sunappu/mod.ts'; * * const assertSnapshot = await setupSnapshot(import.meta.url); * * test('...', () => { *    assertSnapshot(actual, 'named export') *  }) * ``` */export async function setupSnapshot(file: string) {  file = path.fromFileUrl(path.normalize(file));  file = path.join(    path.dirname(file),    '__snapshots__',    path.basename(file) + '.txt',  );  await fs.ensureFile(file);  const exported = await import(path.toFileUrl(file).href);
  return (actual: unknown, name: string) => {    name = name.trim().replace(/([^a-zA-Z])/g, '_');    const expected = exported[name];    actual = typeof actual === 'string'      ? actual      : JSON.stringify(actual, null, 2);    if (expected) {      assertStrictEquals(actual, expected, 'Snapshot mismatched.');    } else {      const data = `export const ${name} = \`${actual}\`;\n\n`;      Deno.writeTextFileSync(file, data, { append: true });    }  };}