Expose libwebp smartSubsample and reductionEffort #1545

lib/constructor.js

@@ -9,6 +9,7 @@ const is = require('./is');
 require('./libvips').hasVendoredLibvips();
 
 let sharp;
+/* istanbul ignore next */
 try {
   sharp = require('../build/Release/sharp.node');
 } catch (err) {
@@ -197,6 +198,8 @@ const Sharp = function (input, options) {
     webpAlphaQuality: 100,
     webpLossless: false,
     webpNearLossless: false,
+    webpSmartSubsample: false,
+    webpReductionEffort: 4,
     tiffQuality: 80,
     tiffCompression: 'jpeg',
     tiffPredictor: 'horizontal',