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authorruki <waruqi@gmail.com>2018-11-08 00:38:48 +0800
committerruki <waruqi@gmail.com>2018-11-07 21:53:09 +0800
commit26105034da4fcce7ac883c899d781f016559310d (patch)
treec459a5dc4e3aa0972d9919033ece511ce76dd129 /node_modules/resolve/lib/node-modules-paths.js
parent2c77f00f1a7ecb6c8192f9c16d3b2001b254a107 (diff)
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Diffstat (limited to 'node_modules/resolve/lib/node-modules-paths.js')
-rw-r--r--node_modules/resolve/lib/node-modules-paths.js45
1 files changed, 45 insertions, 0 deletions
diff --git a/node_modules/resolve/lib/node-modules-paths.js b/node_modules/resolve/lib/node-modules-paths.js
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index 00000000..a4bde6a9
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+++ b/node_modules/resolve/lib/node-modules-paths.js
@@ -0,0 +1,45 @@
+var path = require('path');
+var fs = require('fs');
+var parse = path.parse || require('path-parse');
+
+module.exports = function nodeModulesPaths(start, opts) {
+ var modules = opts && opts.moduleDirectory
+ ? [].concat(opts.moduleDirectory)
+ : ['node_modules'];
+
+ // ensure that `start` is an absolute path at this point,
+ // resolving against the process' current working directory
+ var absoluteStart = path.resolve(start);
+
+ if (opts && opts.preserveSymlinks === false) {
+ try {
+ absoluteStart = fs.realpathSync(absoluteStart);
+ } catch (err) {
+ if (err.code !== 'ENOENT') {
+ throw err;
+ }
+ }
+ }
+
+ var prefix = '/';
+ if (/^([A-Za-z]:)/.test(absoluteStart)) {
+ prefix = '';
+ } else if (/^\\\\/.test(absoluteStart)) {
+ prefix = '\\\\';
+ }
+
+ var paths = [absoluteStart];
+ var parsed = parse(absoluteStart);
+ while (parsed.dir !== paths[paths.length - 1]) {
+ paths.push(parsed.dir);
+ parsed = parse(parsed.dir);
+ }
+
+ var dirs = paths.reduce(function (dirs, aPath) {
+ return dirs.concat(modules.map(function (moduleDir) {
+ return path.join(prefix, aPath, moduleDir);
+ }));
+ }, []);
+
+ return opts && opts.paths ? dirs.concat(opts.paths) : dirs;
+};