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18 changes: 18 additions & 0 deletions test/parallel/test-module-builtin-experimental.js
Original file line number Diff line number Diff line change
Expand Up @@ -22,6 +22,24 @@ for (const [id, flag] of experimentalBuiltins) {
], { status: 0 });
}

const schemelessExperimentalBuiltins = [
['stream/iter', '--experimental-stream-iter'],
['zlib/iter', '--experimental-stream-iter'],
];

for (const [id, flag] of schemelessExperimentalBuiltins) {
const nodeBuiltin = `node:${id}`;

spawnSyncAndAssert(process.execPath, [
'-e', `const assert = require('node:assert'); const { builtinModules } = require('node:module'); assert(!builtinModules.includes('${id}')); assert(!builtinModules.includes('${nodeBuiltin}')); assert.throws(() => require('${id}'), { code: 'MODULE_NOT_FOUND' }); assert.throws(() => require('${nodeBuiltin}'), { code: 'ERR_UNKNOWN_BUILTIN_MODULE' });`,
], { status: 0 });

spawnSyncAndAssert(process.execPath, [
flag,
'-e', `const assert = require('node:assert'); const { builtinModules } = require('node:module'); assert(builtinModules.includes('${id}')); assert(!builtinModules.includes('${nodeBuiltin}')); require('${id}'); require('${nodeBuiltin}');`,
], { status: 0 });
}

// node:ffi is enabled by default in builds with FFI support and can be
// disabled with --no-experimental-ffi.
if (common.hasFFI) {
Expand Down
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