resolver.js

"use strict";
var Resolver = require("enhanced-resolve/lib/Resolver");
var SyncNodeJsInputFileSystem = require("enhanced-resolve/lib/SyncNodeJsInputFileSystem");
var CachedInputFileSystem = require("enhanced-resolve/lib/CachedInputFileSystem");
var UnsafeCachePlugin = require("enhanced-resolve/lib/UnsafeCachePlugin");
var ModulesInDirectoriesPlugin = require("enhanced-resolve/lib/ModulesInDirectoriesPlugin");
var ModulesInRootPlugin = require("enhanced-resolve/lib/ModulesInRootPlugin");
var ModuleAsFilePlugin = require("enhanced-resolve/lib/ModuleAsFilePlugin");
var ModuleAsDirectoryPlugin = require("enhanced-resolve/lib/ModuleAsDirectoryPlugin");
var ModuleAliasPlugin = require("enhanced-resolve/lib/ModuleAliasPlugin");
var DirectoryDefaultFilePlugin = require("enhanced-resolve/lib/DirectoryDefaultFilePlugin");
var DirectoryDescriptionFilePlugin = require("enhanced-resolve/lib/DirectoryDescriptionFilePlugin");
var DirectoryDescriptionFileFieldAliasPlugin = require("enhanced-resolve/lib/DirectoryDescriptionFileFieldAliasPlugin");
var FileAppendPlugin = require("enhanced-resolve/lib/FileAppendPlugin");
var ResultSymlinkPlugin = require("enhanced-resolve/lib/ResultSymlinkPlugin");
function makeRootPlugin(name, root) {
    if (typeof root === "string")
        return new ModulesInRootPlugin(name, root);
    else if (Array.isArray(root)) {
        return function () {
            root.forEach(function (root) {
                this.apply(new ModulesInRootPlugin(name, root));
            }, this);
        };
    }
    return function () { };
}
function makeResolver(options) {
    var fileSystem = new CachedInputFileSystem(new SyncNodeJsInputFileSystem(), 60000);
    var resolver = new Resolver(fileSystem);
    resolver.apply(new UnsafeCachePlugin(options.resolve.unsafeCache), options.resolve.packageAlias ? new DirectoryDescriptionFileFieldAliasPlugin("package.json", options.resolve.packageAlias) : function () { }, new ModuleAliasPlugin(options.resolve.alias), makeRootPlugin("module", options.resolve.root), new ModulesInDirectoriesPlugin("module", options.resolve.modulesDirectories), makeRootPlugin("module", options.resolve.fallback), new ModuleAsFilePlugin("module"), new ModuleAsDirectoryPlugin("module"), new DirectoryDescriptionFilePlugin("package.json", options.resolve.packageMains), new DirectoryDefaultFilePlugin(["index"]), new FileAppendPlugin(options.resolve.extensions), new ResultSymlinkPlugin());
    return resolver;
}
module.exports = makeResolver;