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perf(cd): only run stat once

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This commit is contained in:
Ari Porad 2016-02-20 15:13:46 -08:00
parent 0da963b51f
commit 1c2ef49f8e
1 changed files with 14 additions and 8 deletions
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22
src/cd.js
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@ -16,13 +16,19 @@ function _cd(options, dir) {
dir = common.state.previousDir;
}
if (!fs.existsSync(dir))
common.error('no such file or directory: ' + dir);
if (!fs.statSync(dir).isDirectory())
common.error('not a directory: ' + dir);
common.state.previousDir = process.cwd();
process.chdir(dir);
// This complexity is so that we only stat once.
var error = null;
try {
var stat = fs.statSync(dir);
if(stat.isDirectory()) {
common.state.previousDir = process.cwd();
process.chdir(dir);
} else {
error = 'not a directory: ' + dir;
}
} catch (e) {
error = 'no such file or directory: ' + dir;
}
if (error) common.error(error);
}
module.exports = _cd;