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14 lines
394 B
JavaScript

// warning: extremely hot code path.
// This has been meticulously optimized for use
// within npm install on large package trees.
// Do not edit without careful benchmarking.
module.exports = str => {
let i = str.length - 1
let slashesStart = -1
while (i > -1 && str.charAt(i) === '/') {
slashesStart = i
i--
}
return slashesStart === -1 ? str : str.slice(0, slashesStart)
}