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fix: performance improvement #53

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merged 4 commits into from
Sep 29, 2021
Merged

fix: performance improvement #53

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99ced23
fix: performance improvement
Trott Sep 28, 2021
3abecee
fixup! fix: performance improvement
Trott Sep 29, 2021
03e1b1f
Update package.json
phated Sep 29, 2021
5e59da5
fixup
phated Sep 29, 2021
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16 changes: 14 additions & 2 deletions index.js
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Original file line number Diff line number Diff line change
Expand Up @@ -6,7 +6,6 @@ var isWin32 = require('os').platform() === 'win32';

var slash = '/';
var backslash = /\\/g;
var globby = /(^|[^\\])([{[]|\([^)]+$)/;
var escaped = /\\([!*?|[\](){}])/g;

/**
Expand All @@ -33,7 +32,7 @@ module.exports = function globParent(str, opts) {
// remove path parts that are globby
do {
str = pathPosixDirname(str);
} while (isGlob(str) || globby.test(str));
} while (isGlobby(str));

// remove escape chars and return result
return str.replace(escaped, '$1');
Expand Down Expand Up @@ -61,3 +60,16 @@ function isEnclosure(str) {

return str.slice(foundIndex + 1, -1).includes(slash);
}

function isGlobby(str) {
if (/\([^()]+$/.test(str)) {
return true;
}
if (str[0] === '{' || str[0] === '[') {
return true;
}
if (/[^\\][{[]/.test(str)) {
return true;
}
return isGlob(str);
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Is there anything weird (different?) by changing the order of the isGlob check and "globby" regexp test?

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Because they were OR'ed, I don't think it makes any difference logically. I'm happy to flip it back assuming that doesn't introduce performance regressions.

}
6 changes: 6 additions & 0 deletions test/index.test.js
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Expand Up @@ -242,6 +242,12 @@ describe('glob2base test patterns', function () {
gp('('.repeat(500000));
done();
});

it("should finish in reasonable time for '/('.repeat(n) + ')'", function (done) {
this.timeout(1000);
gp('/('.repeat(500000) + ')');
done();
});
});

if (isWin32) {
Expand Down