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test-cjs-esm-warn.js
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test-cjs-esm-warn.js
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'use strict';
const common = require('../common');
const fixtures = require('../common/fixtures');
const { spawn } = require('child_process');
const assert = require('assert');
const path = require('path');
const requiringCjsAsEsm = path.resolve(fixtures.path('/es-modules/cjs-esm.js'));
const requiringEsm = path.resolve(fixtures.path('/es-modules/cjs-esm-esm.js'));
const pjson = path.resolve(
fixtures.path('/es-modules/package-type-module/package.json')
);
{
const required = path.resolve(
fixtures.path('/es-modules/package-type-module/cjs.js')
);
const basename = 'cjs.js';
const child = spawn(process.execPath, [requiringCjsAsEsm]);
let stderr = '';
child.stderr.setEncoding('utf8');
child.stderr.on('data', (data) => {
stderr += data;
});
child.on('close', common.mustCall((code, signal) => {
assert.strictEqual(code, 1);
assert.strictEqual(signal, null);
assert.ok(stderr.replaceAll('\r', '').includes(
`Error [ERR_REQUIRE_ESM]: require() of ES Module ${required} from ${
requiringCjsAsEsm} not supported.\n`));
assert.ok(stderr.replaceAll('\r', '').includes(
`Instead rename ${basename} to end in .cjs, change the requiring ` +
'code to use dynamic import() which is available in all CommonJS ' +
`modules, or change "type": "module" to "type": "commonjs" in ${pjson} to ` +
'treat all .js files as CommonJS (using .mjs for all ES modules ' +
'instead).\n'));
}));
}
{
const required = path.resolve(
fixtures.path('/es-modules/package-type-module/esm.js')
);
const basename = 'esm.js';
const child = spawn(process.execPath, [requiringEsm]);
let stderr = '';
child.stderr.setEncoding('utf8');
child.stderr.on('data', (data) => {
stderr += data;
});
child.on('close', common.mustCall((code, signal) => {
assert.strictEqual(code, 1);
assert.strictEqual(signal, null);
assert.ok(stderr.replace(/\r/g, '').includes(
`Error [ERR_REQUIRE_ESM]: require() of ES Module ${required} from ${
requiringEsm} not supported.\n`));
assert.ok(stderr.replace(/\r/g, '').includes(
`Instead change the require of ${basename} in ${requiringEsm} to` +
' a dynamic import() which is available in all CommonJS modules.\n'));
}));
}