builders: fix webpack and improve yarn

resources/[system]/[builders]/webpack/.gitignore

@@ -1,2 +1,2 @@
-yarn.lock
+.yarn.installed
 node_modules/

resources/[system]/[builders]/webpack/webpack_builder.js

@@ -4,7 +4,11 @@ const workerFarm = require('worker-farm');
 const async = require('async');
 let buildingInProgress = false;
 let currentBuildingModule = '';
-let currentBuildingScript = '';
+
+// some modules will not like the custom stack trace logic
+const ops = Error.prepareStackTrace;
+Error.prepareStackTrace = undefined;
+
 const webpackBuildTask = {
     shouldBuild(resourceName) {
         const numMetaData = GetNumResourceMetadata(resourceName, 'webpack_config');
@@ -71,11 +75,13 @@ const webpackBuildTask = {
         let buildWebpack = async () => {
             let error = null;
             const configs = [];
+            const promises = [];
             const numMetaData = GetNumResourceMetadata(resourceName, 'webpack_config');
 
             for (let i = 0; i < numMetaData; i++) {
                 configs.push(GetResourceMetadata(resourceName, 'webpack_config', i));
             }
+
             for (const configName of configs) {
                 const configPath = GetResourcePath(resourceName) + '/' + configName;
 
@@ -94,12 +100,14 @@ const webpackBuildTask = {
                     const resourcePath = path.resolve(GetResourcePath(resourceName));
 
                     while (buildingInProgress) {
-                        console.log(`webpack is busy by another process: we are waiting to compile  ${resourceName} (${configName})`);
+                        console.log(`webpack is busy: we are waiting to compile ${resourceName} (${configName})`);
                         await sleep(3000);
                     }
+
                     buildingInProgress = true;
                     currentBuildingModule = resourceName;
-                    currentBuildingScript = configName;
+
+                    promises.push(new Promise((resolve, reject) => {
                         workers({
                             configPath,
                             resourcePath,
@@ -116,8 +124,7 @@ const webpackBuildTask = {
                                 buildingInProgress = false;
                                 currentBuildingModule = '';
                                 currentBuildingScript = '';
-                            error = "worker farm webpack errored out";
+                                reject("worker farm webpack errored out");
-                            console.error("worker farm webpack errored out");
                                 return;
                             }
 
@@ -128,19 +135,27 @@ const webpackBuildTask = {
                                 buildingInProgress = false;
                                 currentBuildingModule = '';
                                 currentBuildingScript = '';
-                            error = "webpack got an error";
+                                reject("webpack got an error");
-                            console.error("webpack got an error");
                                 return;
                             }
 
                             console.log(`${resourceName}: built ${configName}`);
 
+                            resolve();
+                        });
+                    }));
+                }
+            }
+
+            try {
+                await Promise.all(promises);
+            } catch (e) {
+                error = e.toString();
+            }
+
             buildingInProgress = false;
             currentBuildingModule = '';
-                        currentBuildingScript = '';
+
-                    });
-                }
-            }
             if (error) {
                 cb(false, error);
             } else cb(true);

resources/[system]/[builders]/yarn/yarn_builder.js

@@ -12,7 +12,7 @@ const yarnBuildTask = {
 			const resourcePath = GetResourcePath(resourceName);
 			
 			const packageJson = path.resolve(resourcePath, 'package.json');
-			const yarnLock = path.resolve(resourcePath, 'yarn.lock');
+			const yarnLock = path.resolve(resourcePath, '.yarn.installed');
 			
 			const packageStat = fs.statSync(packageJson);
 			
@@ -23,7 +23,7 @@ const yarnBuildTask = {
 					return true;
 				}
 			} catch (e) {
-				// no yarn.lock, but package.json - install time!
+				// no yarn.installed, but package.json - install time!
 				return true;
 			}
 		} catch (e) {
@@ -57,13 +57,8 @@ const yarnBuildTask = {
 					}
 
 					const resourcePath = GetResourcePath(resourceName);
-					const yarnLock = path.resolve(resourcePath, 'yarn.lock');
+					const yarnLock = path.resolve(resourcePath, '.yarn.installed');
-
+					fs.writeFileSync(yarnLock, '');
-					try {
-						fs.utimesSync(yarnLock, new Date(), new Date());
-					} catch (e) {
-
-					}
 
 					buildingInProgress = false;
 					currentBuildingModule = '';