2a09d1a4
 liuqimichale
添加宜春 天水 宣化
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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;
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