enhance non-primitive depolorizer methods to handle null wire (#19)

.gitignore

@@ -5,4 +5,6 @@ node_modules/
 package-lock.json
 
 # Test coverage directory
-coverage/
+coverage/
+
+docs/build

dist/depolorizer.js

@@ -213,20 +213,28 @@ class Depolorizer {
         // Peek the wire type of the next element
         const data = this.read();
         if (schema.fields && schema.fields.values && schema.fields.values.kind) {
-            const arr = [];
-            // Get the next element as a pack
-            // depolorizer with the slice elements
-            const pack = this.newLoadDepolorizer(data);
-            // Iterate until loadreader is done
-            while (!pack.isDone()) {
-                // Depolorize the element into the element type
-                const element = pack.depolorize(schema.fields.values);
-                if (element) {
-                    // const ele = pack.unpack(schema.fields.values, element);
-                    arr.push(element);
+            switch (data.wire) {
+                case wiretype_1.WireType.WIRE_PACK: {
+                    // Get the next element as a pack
+                    // depolorizer with the slice elements
+                    const pack = this.newLoadDepolorizer(data);
+                    const arr = [];
+                    // Iterate until loadreader is done
+                    while (!pack.isDone()) {
+                        // Depolorize the element into the element type
+                        const element = pack.depolorize(schema.fields.values);
+                        if (element) {
+                            // const ele = pack.unpack(schema.fields.values, element);
+                            arr.push(element);
+                        }
+                    }
+                    return arr;
                 }
+                case wiretype_1.WireType.WIRE_NULL:
+                    return [];
+                default:
+                    throw new Error('Incompatible wire type');
             }
-            return arr;
         }
         throw new Error('Invalid kind');
     }
@@ -291,11 +299,11 @@ class Depolorizer {
         const data = this.read();
         if (schema.fields && schema.fields.keys && schema.fields.values &&
             schema.fields.keys.kind && schema.fields.values.kind) {
-            // Get the next element as a pack
-            // depolorizer with the slice elements
-            const pack = this.newLoadDepolorizer(data);
             switch (data.wire) {
                 case wiretype_1.WireType.WIRE_PACK: {
+                    // Get the next element as a pack
+                    // depolorizer with the slice elements
+                    const pack = this.newLoadDepolorizer(data);
                     const map = new Map();
                     // Iterate until loadreader is done
                     while (!pack.isDone()) {
@@ -306,6 +314,8 @@ class Depolorizer {
                     }
                     return map;
                 }
+                case wiretype_1.WireType.WIRE_NULL:
+                    return new Map();
                 default:
                     throw new Error('Incompatible wire type');
             }
@@ -323,13 +333,13 @@ class Depolorizer {
     depolorizeStruct(schema) {
         // Peek the wire type of the next element
         const data = this.read();
-        // Get the next element as a pack
-        // depolorizer with the slice elements
-        const pack = this.newLoadDepolorizer(data);
         switch (data.wire) {
             case wiretype_1.WireType.WIRE_PACK: {
-                const obj = {};
+                // Get the next element as a pack
+                // depolorizer with the slice elements
+                const pack = this.newLoadDepolorizer(data);
                 const entries = Object.entries(schema.fields);
+                const obj = {};
                 let index = 0;
                 // Iterate until loadreader is done
                 while (!pack.isDone()) {
@@ -350,6 +360,8 @@ class Depolorizer {
                 });
                 return obj;
             }
+            case wiretype_1.WireType.WIRE_NULL:
+                return {};
             default:
                 throw new Error('Incompatible wire type');
         }