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- {"version":3,"file":"get-write-flag.js","sourceRoot":"","sources":["../../src/get-write-flag.ts"],"names":[],"mappings":";AAAA,qDAAqD;AACrD,uDAAuD;AACvD,wDAAwD;AACxD,wDAAwD;AACxD,qDAAqD;AACrD,uDAAuD;AACvD,8CAA8C;;;;;;AAE9C,4CAAmB;AAEnB,MAAM,QAAQ,GAAG,OAAO,CAAC,GAAG,CAAC,iBAAiB,IAAI,OAAO,CAAC,QAAQ,CAAA;AAClE,MAAM,SAAS,GAAG,QAAQ,KAAK,OAAO,CAAA;AAEtC,qBAAqB;AACrB,MAAM,EAAE,OAAO,EAAE,OAAO,EAAE,QAAQ,EAAE,GAAG,YAAE,CAAC,SAAS,CAAA;AACnD,MAAM,eAAe,GACnB,MAAM,CAAC,OAAO,CAAC,GAAG,CAAC,sBAAsB,CAAC;IAC1C,YAAE,CAAC,SAAS,CAAC,eAAe;IAC5B,CAAC,CAAA;AACH,oBAAoB;AAEpB,MAAM,WAAW,GAAG,SAAS,IAAI,CAAC,CAAC,eAAe,CAAA;AAClD,MAAM,SAAS,GAAG,GAAG,GAAG,IAAI,CAAA;AAC5B,MAAM,QAAQ,GAAG,eAAe,GAAG,OAAO,GAAG,OAAO,GAAG,QAAQ,CAAA;AAClD,QAAA,YAAY,GACvB,CAAC,WAAW,CAAC,CAAC;IACZ,GAAG,EAAE,CAAC,GAAG;IACX,CAAC,CAAC,CAAC,IAAY,EAAE,EAAE,CAAC,CAAC,IAAI,GAAG,SAAS,CAAC,CAAC,CAAC,QAAQ,CAAC,CAAC,CAAC,GAAG,CAAC,CAAA","sourcesContent":["// Get the appropriate flag to use for creating files\n// We use fmap on Windows platforms for files less than\n// 512kb. This is a fairly low limit, but avoids making\n// things slower in some cases. Since most of what this\n// library is used for is extracting tarballs of many\n// relatively small files in npm packages and the like,\n// it can be a big boost on Windows platforms.\n\nimport fs from 'fs'\n\nconst platform = process.env.__FAKE_PLATFORM__ || process.platform\nconst isWindows = platform === 'win32'\n\n/* c8 ignore start */\nconst { O_CREAT, O_TRUNC, O_WRONLY } = fs.constants\nconst UV_FS_O_FILEMAP =\n Number(process.env.__FAKE_FS_O_FILENAME__) ||\n fs.constants.UV_FS_O_FILEMAP ||\n 0\n/* c8 ignore stop */\n\nconst fMapEnabled = isWindows && !!UV_FS_O_FILEMAP\nconst fMapLimit = 512 * 1024\nconst fMapFlag = UV_FS_O_FILEMAP | O_TRUNC | O_CREAT | O_WRONLY\nexport const getWriteFlag =\n !fMapEnabled ?\n () => 'w'\n : (size: number) => (size < fMapLimit ? fMapFlag : 'w')\n"]}
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