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'use strict';
var path = require('path');
var pathKey = require('path-key');
module.exports = function (opts) {
opts = opts || {};
var prev;
var pth = path.resolve(opts.cwd || '.');
var ret = [];
while (prev !== pth) {
ret.push(path.join(pth, 'node_modules/.bin'));
prev = pth;
pth = path.resolve(pth, '..');
}
// ensure the running `node` binary is used
ret.push(path.dirname(process.execPath));
return ret.concat(opts.path || process.env[pathKey()]).join(path.delimiter);
};
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