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Matteo Collina
c9562ddb82
Adds the node:vfs builtin module with VirtualFileSystem and provider classes. No integration with fs, modules, or SEA. Assisted-by: Claude-Opus4.7 Signed-off-by: Matteo Collina <hello@matteocollina.com> PR-URL: https://github.com/nodejs/node/pull/63115 Reviewed-By: James M Snell <jasnell@gmail.com> Reviewed-By: Paolo Insogna <paolo@cowtech.it> Reviewed-By: Robert Nagy <ronagy@icloud.com> Reviewed-By: Stephen Belanger <admin@stephenbelanger.com>
60 lines
1.6 KiB
JavaScript
60 lines
1.6 KiB
JavaScript
'use strict';
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// node:vfs is gated behind --experimental-vfs. Without the flag the
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// module is not exposed; bare `vfs` (without the node: scheme) is also
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// blocked.
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require('../common');
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const { spawnSyncAndAssert } = require('../common/child_process');
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// Without the flag, requiring node:vfs throws ERR_UNKNOWN_BUILTIN_MODULE.
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{
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spawnSyncAndAssert(process.execPath, [
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'-e', 'require("node:vfs")',
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], { status: 1, stderr: /ERR_UNKNOWN_BUILTIN_MODULE/ });
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}
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// Without the flag, importing node:vfs throws ERR_UNKNOWN_BUILTIN_MODULE.
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{
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spawnSyncAndAssert(process.execPath, [
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'--input-type=module',
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'-e', 'import("node:vfs").catch((e) => { console.error(e.code); process.exit(1); });',
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], {
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status: 1,
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stderr: /ERR_UNKNOWN_BUILTIN_MODULE/,
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});
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}
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// With the flag, node:vfs loads and works.
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{
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const script =
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'const v = require("node:vfs");' +
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'const x = v.create();' +
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'x.writeFileSync("/x", "hi");' +
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'console.log(x.readFileSync("/x", "utf8"));';
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spawnSyncAndAssert(process.execPath, ['--experimental-vfs', '-e', script], {
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stdout: 'hi',
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trim: true,
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});
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}
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// Bare `vfs` (no node: scheme) is always blocked.
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{
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spawnSyncAndAssert(process.execPath, [
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'--experimental-vfs',
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'-e', "require('vfs')",
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], { status: 1, stderr: /Cannot find module 'vfs'/ });
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}
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// Module.builtinModules reflects whether --experimental-vfs is active.
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for (const [flag, expected] of [
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['--experimental-vfs', 'true\n'],
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['--no-experimental-vfs', 'false\n'],
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]) {
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spawnSyncAndAssert(process.execPath, [
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flag,
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'-p',
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'require("node:module").builtinModules.includes("node:vfs")',
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], { stdout: expected, stderr: '' });
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}
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