fediversity.eu/node_modules/resolve/lib/node-modules-paths.js
2024-03-26 16:28:28 +01:00

43 lines
1.3 KiB
JavaScript

var path = require('path');
var parse = path.parse || require('path-parse'); // eslint-disable-line global-require
var getNodeModulesDirs = function getNodeModulesDirs(absoluteStart, modules) {
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);
}
return paths.reduce(function (dirs, aPath) {
return dirs.concat(modules.map(function (moduleDir) {
return path.resolve(prefix, aPath, moduleDir);
}));
}, []);
};
module.exports = function nodeModulesPaths(start, opts, request) {
var modules = opts && opts.moduleDirectory
? [].concat(opts.moduleDirectory)
: ['node_modules'];
if (opts && typeof opts.paths === 'function') {
return opts.paths(
request,
start,
function () { return getNodeModulesDirs(start, modules); },
opts
);
}
var dirs = getNodeModulesDirs(start, modules);
return opts && opts.paths ? dirs.concat(opts.paths) : dirs;
};