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- // Get the appropriate flag to use for creating files
- // We use fmap on Windows platforms for files less than
- // 512kb. This is a fairly low limit, but avoids making
- // things slower in some cases. Since most of what this
- // library is used for is extracting tarballs of many
- // relatively small files in npm packages and the like,
- // it can be a big boost on Windows platforms.
- import fs from 'fs';
- const platform = process.env.__FAKE_PLATFORM__ || process.platform;
- const isWindows = platform === 'win32';
- /* c8 ignore start */
- const { O_CREAT, O_TRUNC, O_WRONLY } = fs.constants;
- const UV_FS_O_FILEMAP = Number(process.env.__FAKE_FS_O_FILENAME__) ||
- fs.constants.UV_FS_O_FILEMAP ||
- 0;
- /* c8 ignore stop */
- const fMapEnabled = isWindows && !!UV_FS_O_FILEMAP;
- const fMapLimit = 512 * 1024;
- const fMapFlag = UV_FS_O_FILEMAP | O_TRUNC | O_CREAT | O_WRONLY;
- export const getWriteFlag = !fMapEnabled ?
- () => 'w'
- : (size) => (size < fMapLimit ? fMapFlag : 'w');
- //# sourceMappingURL=get-write-flag.js.map
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