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'use strict'; var path = require('path'); var which = require('which'); var LRU = require('lru-cache'); var commandCache = new LRU({ max: 50, maxAge: 30 * 1000 }); // Cache just for 30sec function resolveCommand(command, noExtension) { var resolved; noExtension = !!noExtension; resolved = commandCache.get(command + '!' + noExtension); // Check if its resolved in the cache if (commandCache.has(command)) { return commandCache.get(command); } try { resolved = !noExtension ? which.sync(command) : which.sync(command, { pathExt: path.delimiter + (process.env.PATHEXT \|\| '') }); } catch (e) { /* empty */ } commandCache.set(command + '!' + noExtension, resolved); return resolved; } module.exports = resolveCommand;