refactor: replace config dot notation in npm lookup

lib/manager/npm/package.js

@@ -9,28 +9,27 @@ module.exports = {
 
 async function getPackageUpdates(config) {
   logger.trace({ config }, `npm.getPackageUpdates()`);
-  if (config.depType === 'engines') {
-    if (config.depName !== 'node') {
+  const { depType, depName, currentVersion } = config;
+  if (depType === 'engines') {
+    if (depName !== 'node') {
       logger.debug('Skipping non-node engine');
       return [];
     }
     return nodeManager.getPackageUpdates(config);
   }
   let results = [];
-  if (config.currentVersion.startsWith('file:')) {
+  if (currentVersion.startsWith('file:')) {
     logger.debug(
-      { dependency: config.depName, currentVersion: config.currentVersion },
+      { dependency: depName, currentVersion },
       'Skipping file: dependency'
     );
     return [];
   }
-  if (!isValidSemver(config.currentVersion)) {
+  if (!isValidSemver(currentVersion)) {
     results.push({
-      depName: config.depName,
+      depName,
       type: 'warning',
-      message: `Dependency uses tag "\`${
-        config.currentVersion
-      }\`" as its version so that will never be changed by Renovate`,
+      message: `Dependency uses tag "\`${currentVersion}\`" as its version so that will never be changed by Renovate`,
     });
     logger.debug(results[0].message);
     return results;
@@ -39,12 +38,12 @@ async function getPackageUpdates(config) {
     config.npmrc,
     config.global ? config.global.exposeEnv : false
   );
-  const npmDep = await npmApi.getDependency(config.depName);
+  const npmDep = await npmApi.getDependency(depName);
   if (npmDep) {
     results = await versions.determineUpgrades(npmDep, config);
     if (results.length > 0) {
       logger.info(
-        { dependency: config.depName },
+        { dependency: depName },
         `${results.length} result(s): ${results.map(
           upgrade => upgrade.newVersion
         )}`
@@ -54,11 +53,11 @@ async function getPackageUpdates(config) {
     // If dependency lookup fails then warn and return
     const result = {
       type: 'warning',
-      message: `Failed to look up dependency ${config.depName}`,
+      message: `Failed to look up dependency ${depName}`,
     };
     results = [result];
     logger.info(
-      { dependency: config.depName, packageFile: config.packageFile },
+      { dependency: depName, packageFile: config.packageFile },
       result.message
     );
   }
@@ -67,9 +66,9 @@ async function getPackageUpdates(config) {
       npmDep && npmDep.repositoryUrl && npmDep.repositoryUrl.length
         ? npmDep.repositoryUrl
         : null;
-    if (!result.repositoryUrl && config.depName.startsWith('@types/')) {
+    if (!result.repositoryUrl && depName.startsWith('@types/')) {
       logger.debug('Setting @types url manually');
-      result.repositoryUrl = `https://github.com/DefinitelyTyped/DefinitelyTyped/tree/master/${config.depName.replace(
+      result.repositoryUrl = `https://github.com/DefinitelyTyped/DefinitelyTyped/tree/master/${depName.replace(
         '@',
         ''
       )}`;