corrade-nucleus-nucleons – Blame information for rev 36

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36 office 1 'use strict';
2  
3 var path = require('path');
4 var which = require('which');
5 var LRU = require('lru-cache');
6  
7 var commandCache = new LRU({ max: 50, maxAge: 30 * 1000 }); // Cache just for 30sec
8  
9 function resolveCommand(command, noExtension) {
10 var resolved;
11  
12 noExtension = !!noExtension;
13 resolved = commandCache.get(command + '!' + noExtension);
14  
15 // Check if its resolved in the cache
16 if (commandCache.has(command)) {
17 return commandCache.get(command);
18 }
19  
20 try {
21 resolved = !noExtension ?
22 which.sync(command) :
23 which.sync(command, { pathExt: path.delimiter + (process.env.PATHEXT || '') });
24 } catch (e) { /* empty */ }
25  
26 commandCache.set(command + '!' + noExtension, resolved);
27  
28 return resolved;
29 }
30  
31 module.exports = resolveCommand;