suppress warnings in test cases

Author: JakobJingleheimer

test/es-module/test-esm-loader-not-found.mjs

@@ -8,6 +8,7 @@ import { describe, it } from 'node:test';
 describe('ESM: nonexistent loader', () => {
   it('should throw', async () => {
     const { code, stderr } = await spawnPromisified(execPath, [
+      '--no-warnings',
       '--experimental-loader',
       'i-dont-exist',
       fixtures.path('print-error-message.js'),

test/es-module/test-esm-loader-side-effect.mjs

@@ -1,4 +1,4 @@
-// Flags: --experimental-loader ./test/fixtures/es-module-loaders/loader-side-effect.mjs --require ./test/fixtures/es-module-loaders/loader-side-effect-require-preload.js
+// Flags: --no-warnings --experimental-loader ./test/fixtures/es-module-loaders/loader-side-effect.mjs --require ./test/fixtures/es-module-loaders/loader-side-effect-require-preload.js
 import { allowGlobals, mustCall } from '../common/index.mjs';
 import assert from 'assert';
 import { fileURLToPath } from 'url';

test/es-module/test-esm-loader-with-syntax-error.mjs

@@ -8,6 +8,7 @@ import { describe, it } from 'node:test';
 describe('ESM: loader with syntax error', { concurrency: true }, () => {
   it('should crash the node process', async () => {
     const { code, stderr } = await spawnPromisified(execPath, [
+      '--no-warnings',
       '--experimental-loader',
       fileURL('es-module-loaders', 'syntax-error.mjs').href,
       path('print-error-message.js'),

test/es-module/test-esm-named-exports.js

@@ -1,4 +1,4 @@
-// Flags: --experimental-loader ./test/fixtures/es-module-loaders/builtin-named-exports-loader.mjs
+// Flags: --no-warnings --experimental-loader ./test/fixtures/es-module-loaders/builtin-named-exports-loader.mjs
 'use strict';
 
 require('../common');