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test-esm-preserve-symlinks-main.js
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test-esm-preserve-symlinks-main.js
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'use strict';
const { spawnPromisified, skip } = require('../common');
const tmpdir = require('../common/tmpdir');
// Invoke the main file via a symlink. In this case --preserve-symlinks-main
// dictates that it'll resolve relative imports in the main file relative to
// the symlink, and not relative to the symlink target; the file structure set
// up below requires this to not crash when loading ./submodule_link.js
const assert = require('node:assert');
const fs = require('node:fs');
const path = require('node:path');
const { execPath } = require('node:process');
const { describe, it } = require('node:test');
tmpdir.refresh();
const tmpDir = tmpdir.path;
fs.mkdirSync(path.join(tmpDir, 'nested'));
fs.mkdirSync(path.join(tmpDir, 'nested2'));
const entry = path.join(tmpDir, 'nested', 'entry.js');
const entry_link_absolute_path = path.join(tmpDir, 'index.js');
const submodule = path.join(tmpDir, 'nested2', 'submodule.js');
const submodule_link_absolute_path = path.join(tmpDir, 'submodule_link.js');
fs.writeFileSync(entry, `
const assert = require('assert');
// this import only resolves with --preserve-symlinks-main set
require('./submodule_link.js');
`);
fs.writeFileSync(submodule, '');
try {
fs.symlinkSync(entry, entry_link_absolute_path);
fs.symlinkSync(submodule, submodule_link_absolute_path);
} catch (err) {
if (err.code !== 'EPERM') throw err;
skip('insufficient privileges for symlinks');
}
describe('Invoke the main file via a symlink.', { concurrency: !process.env.TEST_PARALLEL }, () => {
it('should resolve relative imports in the main file', async () => {
const { code } = await spawnPromisified(execPath, [
'--preserve-symlinks',
'--preserve-symlinks-main',
entry_link_absolute_path,
]);
assert.strictEqual(code, 0);
});
it('should resolve relative imports in the main file when file extension is omitted', async () => {
const entry_link_absolute_path_without_ext = path.join(tmpDir, 'index');
const { code } = await spawnPromisified(execPath, [
'--preserve-symlinks',
'--preserve-symlinks-main',
entry_link_absolute_path_without_ext,
]);
assert.strictEqual(code, 0);
});
it('should resolve relative imports in the main file when filename(index.js) is omitted', async () => {
const { code } = await spawnPromisified(execPath, [
'--preserve-symlinks',
'--preserve-symlinks-main',
tmpDir,
]);
assert.strictEqual(code, 0);
});
});