work.suroh.tk/node_modules/enhanced-resolve/lib/ModulesInHierachicDirectori...

65 lines
1.6 KiB
JavaScript

/*
MIT License http://www.opensource.org/licenses/mit-license.php
Author Tobias Koppers @sokra
*/
"use strict";
const forEachBail = require("./forEachBail");
const getPaths = require("./getPaths");
module.exports = class ModulesInHierachicDirectoriesPlugin {
constructor(source, directories, target) {
this.source = source;
this.directories = [].concat(directories);
this.target = target;
}
apply(resolver) {
const target = resolver.ensureHook(this.target);
resolver
.getHook(this.source)
.tapAsync(
"ModulesInHierachicDirectoriesPlugin",
(request, resolveContext, callback) => {
const fs = resolver.fileSystem;
const addrs = getPaths(request.path)
.paths.map(p => {
return this.directories.map(d => resolver.join(p, d));
})
.reduce((array, p) => {
array.push.apply(array, p);
return array;
}, []);
forEachBail(
addrs,
(addr, callback) => {
fs.stat(addr, (err, stat) => {
if (!err && stat && stat.isDirectory()) {
const obj = Object.assign({}, request, {
path: addr,
request: "./" + request.request
});
const message = "looking for modules in " + addr;
return resolver.doResolve(
target,
obj,
message,
resolveContext,
callback
);
}
if (resolveContext.log)
resolveContext.log(
addr + " doesn't exist or is not a directory"
);
if (resolveContext.missing) resolveContext.missing.add(addr);
return callback();
});
},
callback
);
}
);
}
};