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>
19 lines
509 B
JavaScript
19 lines
509 B
JavaScript
// Flags: --experimental-vfs
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'use strict';
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// writeSync in append mode must append, not overwrite.
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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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const myVfs = vfs.create();
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myVfs.writeFileSync('/append.txt', 'init');
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const fd = myVfs.openSync('/append.txt', 'a');
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const buf = Buffer.from(' more');
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myVfs.writeSync(fd, buf, 0, buf.length);
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myVfs.closeSync(fd);
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const content = myVfs.readFileSync('/append.txt', 'utf8');
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assert.strictEqual(content, 'init more');
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