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'use strict';
const common = require('../common');
const assert = require('assert');
const { URL } = require('url');
const relativePath = '../fixtures/es-modules/test-esm-ok.mjs';
const absolutePath = require.resolve('../fixtures/es-modules/test-esm-ok.mjs');
const targetURL = new URL('file:///');
targetURL.pathname = absolutePath;
function expectErrorProperty(result, propertyKey, value) {
Promise.resolve(result)
.catch(common.mustCall((error) => {
assert.strictEqual(error[propertyKey], value);
}));
}
function expectMissingModuleError(result) {
expectErrorProperty(result, 'code', 'ERR_MODULE_NOT_FOUND');
}
function expectOkNamespace(result) {
Promise.resolve(result)
.then(common.mustCall((ns) => {
const expected = { default: true };
Object.defineProperty(expected, Symbol.toStringTag, {
value: 'Module'
});
Object.setPrototypeOf(expected, Object.getPrototypeOf(ns));
assert.deepStrictEqual(ns, expected);
}));
}
function expectFsNamespace(result) {
Promise.resolve(result)
.then(common.mustCall((ns) => {
assert.strictEqual(typeof ns.default.writeFile, 'function');
assert.strictEqual(typeof ns.writeFile, 'function');
}));
}
// For direct use of import expressions inside of CJS or ES modules, including
// via eval, all kinds of specifiers should work without issue.
(function testScriptOrModuleImport() {
common.expectWarning('ExperimentalWarning',
'The ESM module loader is experimental.');
// Importing another file, both direct & via eval
// expectOkNamespace(import(relativePath));
expectOkNamespace(eval(`import("${relativePath}")`));
expectOkNamespace(eval(`import("${relativePath}")`));
expectOkNamespace(eval(`import("${targetURL}")`));
// Importing a built-in, both direct & via eval
expectFsNamespace(import('fs'));
expectFsNamespace(eval('import("fs")'));
expectFsNamespace(eval('import("fs")'));
expectMissingModuleError(import('./not-an-existing-module.mjs'));
// TODO(jkrems): Right now this doesn't hit a protocol error because the
// module resolution step already rejects it. These arguably should be
// protocol errors.
expectMissingModuleError(import('node:fs'));
expectMissingModuleError(import('http://example.com/foo.js'));
})();
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