[fix] defer webpack partial config loading

packages/xarc-webpack/src/partials/index.ts

@@ -6,7 +6,6 @@ import * as Fs from "fs";
 const assert = require("assert");
 const Partial = require("webpack-config-composer/lib/partial");
 
-
 //
 // This specifies a general order of partials to be applied.
 // Any new partial need to be added here.  Name is the filename
@@ -57,7 +56,7 @@ const files = Fs.readdirSync(__dirname)
 const partials = files.reduce((a, p) => {
   const k = `_${p}`;
   assert(orders.indexOf(k) >= 0, `No default order specified for partial ${p}`);
-  a[k] = new Partial(k, { config: require(`./${p}`) });
+  a[k] = new Partial(k, { config: () => require(`./${p}`) });
   a[k].options.order = (orders.indexOf(k) + 1) * 100;
   return a;
 }, {});

packages/xarc-webpack/src/util/generate-config.ts

@@ -6,7 +6,6 @@ import * as _ from "lodash";
 import * as Path from "path";
 
 const xsh = require("xsh");
-const partials = require("../partials");
 const WebpackConfigComposer = require("webpack-config-composer");
 const optionalRequire = require("optional-require")(require);
 import { logger } from "@xarc/dev-base";
@@ -66,6 +65,8 @@ function searchUserCustomConfig(options) {
 // returns a new options copy
 //
 export function initWebpackConfigComposer(options) {
+  const partials = require("../partials");
+
   options = Object.assign({ profileNames: [] }, options);
 
   if (!options.composer) {