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check case sensitivity of host file system. #11332

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Merged
vladima merged 4 commits into from
Oct 3, 2016
Merged

check case sensitivity of host file system. #11332

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85d5894
Added detection for case sensitive file systems
Sep 9, 2016
33a2c0b
Merge branch 'master' into bug-mac-osx-case-sensitive
Sep 13, 2016
0c000e8
Merge remote-tracking branch 'tf/bug-mac-osx-case-sensitive' into vla…
vladima Oct 3, 2016
5cdbe77
guard against cases when current file name is already in uppercase
vladima Oct 3, 2016
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13 changes: 11 additions & 2 deletions src/compiler/sys.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -311,9 +311,18 @@ namespace ts {
return parseInt(process.version.charAt(1)) >= 4;
}

function isFileSystemCaseSensitive(): boolean {
// win32\win64 are case insensitive platforms
if (platform === "win32" || platform === "win64") {
return false;
}
// convert current file name to upper case / lower case and check if file exists
// (guards against cases when name is already all uppercase or lowercase)
return !fileExists(__filename.toUpperCase()) || !fileExists(__filename.toLowerCase());
}

const platform: string = _os.platform();
// win32\win64 are case insensitive platforms, MacOS (darwin) by default is also case insensitive
const useCaseSensitiveFileNames = platform !== "win32" && platform !== "win64" && platform !== "darwin";
const useCaseSensitiveFileNames = isFileSystemCaseSensitive();

function readFile(fileName: string, encoding?: string): string {
if (!fileExists(fileName)) {
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