From 26105034da4fcce7ac883c899d781f016559310d Mon Sep 17 00:00:00 2001 From: ruki Date: Thu, 8 Nov 2018 00:38:48 +0800 Subject: switch to vuepress --- .../cross-spawn/lib/util/resolveCommand.js | 31 ++++++++++++++++++++++ 1 file changed, 31 insertions(+) create mode 100644 node_modules/cross-spawn/lib/util/resolveCommand.js (limited to 'node_modules/cross-spawn/lib/util/resolveCommand.js') diff --git a/node_modules/cross-spawn/lib/util/resolveCommand.js b/node_modules/cross-spawn/lib/util/resolveCommand.js new file mode 100644 index 00000000..b7a94909 --- /dev/null +++ b/node_modules/cross-spawn/lib/util/resolveCommand.js @@ -0,0 +1,31 @@ +'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; -- cgit v1.2.3