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'use strict'
// turn tar(1) style args like `C` into the more verbose things like `cwd`
const argmap = new Map([
['C', 'cwd'],
['f', 'file'],
['z', 'gzip'],
['P', 'preservePaths'],
['U', 'unlink'],
['strip-components', 'strip'],
['stripComponents', 'strip'],
['keep-newer', 'newer'],
['keepNewer', 'newer'],
['keep-newer-files', 'newer'],
['keepNewerFiles', 'newer'],
['k', 'keep'],
['keep-existing', 'keep'],
['keepExisting', 'keep'],
['m', 'noMtime'],
['no-mtime', 'noMtime'],
['p', 'preserveOwner'],
['L', 'follow'],
['h', 'follow']
])
const parse = module.exports = opt => opt ? Object.keys(opt).map(k => [
argmap.has(k) ? argmap.get(k) : k, opt[k]
]).reduce((set, kv) => (set[kv[0]] = kv[1], set), Object.create(null)) : {}
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