5e952182e7PR-URL: https://github.com/nodejs/node/pull/14417 Reviewed-By: James M Snell <jasnell@gmail.com> Reviewed-By: Colin Ihrig <cjihrig@gmail.com> Reviewed-By: Teddy Katz <teddy.katz@gmail.com> Reviewed-By: Roman Reiss <me@silverwind.io> Reviewed-By: Refael Ackermann <refack@gmail.com>
31 lines
805 B
JavaScript
31 lines
805 B
JavaScript
'use strict';
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var path = require('path');
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var which = require('which');
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var LRU = require('lru-cache');
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var commandCache = new LRU({ max: 50, maxAge: 30 * 1000 }); // Cache just for 30sec
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function resolveCommand(command, noExtension) {
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var resolved;
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noExtension = !!noExtension;
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resolved = commandCache.get(command + '!' + noExtension);
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// Check if its resolved in the cache
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if (commandCache.has(command)) {
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return commandCache.get(command);
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}
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try {
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resolved = !noExtension ?
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which.sync(command) :
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which.sync(command, { pathExt: path.delimiter + (process.env.PATHEXT || '') });
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} catch (e) { /* empty */ }
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commandCache.set(command + '!' + noExtension, resolved);
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return resolved;
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}
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module.exports = resolveCommand;
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