c9562ddb82Adds 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>
65 lines
1.7 KiB
JavaScript
65 lines
1.7 KiB
JavaScript
// Flags: --experimental-vfs
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'use strict';
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// Constructor variants and option validation for vfs.create() and
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// `new VirtualFileSystem(...)`.
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require('../common');
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const assert = require('assert');
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const vfs = require('node:vfs');
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// vfs.create() with no arguments uses the default MemoryProvider
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{
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const myVfs = vfs.create();
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assert.ok(myVfs.provider instanceof vfs.MemoryProvider);
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}
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// vfs.create with first arg as options object (no provider)
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{
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const myVfs = vfs.create({ emitExperimentalWarning: false });
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assert.ok(myVfs);
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assert.ok(myVfs.provider instanceof vfs.MemoryProvider);
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}
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// vfs.create with explicit provider
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{
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const provider = new vfs.MemoryProvider();
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const myVfs = vfs.create(provider);
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assert.strictEqual(myVfs.provider, provider);
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}
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// new VirtualFileSystem(options) directly
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{
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const myVfs = new vfs.VirtualFileSystem({ emitExperimentalWarning: false });
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assert.ok(myVfs);
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}
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// emitExperimentalWarning option must be a boolean
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{
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assert.throws(
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() => new vfs.VirtualFileSystem({ emitExperimentalWarning: 'not-bool' }),
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{ code: 'ERR_INVALID_ARG_TYPE' });
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}
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// existsSync swallows ALL errors from the provider, not just ENOENT
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{
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class ThrowingProvider extends vfs.VirtualProvider {
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existsSync() { throw new Error('boom'); }
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}
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const myVfs = vfs.create(new ThrowingProvider());
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assert.strictEqual(myVfs.existsSync('/anything'), false);
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}
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// Walking a path through a regular-file parent throws ENOTDIR
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{
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const myVfs = vfs.create();
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myVfs.writeFileSync('/file.txt', 'x');
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assert.throws(() => myVfs.writeFileSync('/file.txt/oops', 'y'),
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{ code: 'ENOTDIR' });
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}
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// statSync('/') returns the root directory
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{
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const myVfs = vfs.create();
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assert.ok(myVfs.statSync('/').isDirectory());
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}
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