[enh] change addon path to absolute and autorize node 8

lib/index.js

 "use strict";
 
-const addon = require('../native');
 const path = require('path');
+const binding_path = path.resolve(path.join(__dirname,'../native'));
+const binding = require(binding_path);
 
 module.exports = {
 
@@ -9,9 +10,9 @@ module.exports = {
         const instance = Object.create(WotB)
         if (process.platform == 'win32') {
         let bufferedPath = new Buffer(filePath,'ascii');
-            instance.init(addon.new_file_instance_win_32(bufferedPath, bufferedPath.length, sigStock))
+            instance.init(binding.new_file_instance_win_32(bufferedPath, bufferedPath.length, sigStock))
         } else {
-            instance.init(addon.new_file_instance(filePath, sigStock));
+            instance.init(binding.new_file_instance(filePath, sigStock));
         }
         instance.setFilePath(filePath)
         return instance
@@ -19,7 +20,7 @@ module.exports = {
 
     newMemoryInstance: (sigStock) => {
         const instance = Object.create(WotB)
-        const id = addon.new_memory_instance(sigStock);
+        const id = binding.new_memory_instance(sigStock);
         instance.init(id)
         return instance
     },
@@ -45,53 +46,53 @@ const WotB = {
     },
 
     write: function() {
-        return addon.write_instance_in_file(this.instanceID, this.filePath);
+        return binding.write_instance_in_file(this.instanceID, this.filePath);
     },
 
     memCopy: function() {
         const copy = Object.create(WotB)
-        copy.instanceID = addon.mem_copy(this.instanceID);
+        copy.instanceID = binding.mem_copy(this.instanceID);
         return copy;
     },
 
     getMaxCert: function() {
-        return addon.get_max_links(this.instanceID);
+        return binding.get_max_links(this.instanceID);
     },
 
     getWoTSize: function() {
-        return addon.get_wot_size(this.instanceID);
+        return binding.get_wot_size(this.instanceID);
     },
 
     isEnabled: function(nodeId) {
-        return addon.is_enabled(this.instanceID, nodeId);
+        return binding.is_enabled(this.instanceID, nodeId);
     },
 
     getEnabled: function() {
-        return addon.get_enabled(this.instanceID);
+        return binding.get_enabled(this.instanceID);
     },
 
     getDisabled: function() {
-        return addon.get_disabled(this.instanceID);
+        return binding.get_disabled(this.instanceID);
     },
 
     getSentries: function(sentry_requirement) {
-        return addon.get_sentries(this.instanceID, sentry_requirement);
+        return binding.get_sentries(this.instanceID, sentry_requirement);
     },
 
     getNonSentries: function(sentry_requirement) {
-        return addon.get_non_sentries(this.instanceID, sentry_requirement);
+        return binding.get_non_sentries(this.instanceID, sentry_requirement);
     },
 
     existsLink: function(source, target) {
-        return addon.exist_link(this.instanceID, source, target);
+        return binding.exist_link(this.instanceID, source, target);
     },
 
     setMaxCert: function(maxCert) {
-        return addon.set_max_links(this.instanceID, maxCert);
+        return binding.set_max_links(this.instanceID, maxCert);
     },
 
     addNode: function() {
-        var result = addon.add_node(this.instanceID);
+        var result = binding.add_node(this.instanceID);
         if (this.filePath.length > 0) {
             this.write();
         }
@@ -99,7 +100,7 @@ const WotB = {
     },
 
     removeNode: function() {
-        var result = addon.rem_node(this.instanceID);
+        var result = binding.rem_node(this.instanceID);
         if (this.filePath.length > 0) {
             this.write();
         }
@@ -107,7 +108,7 @@ const WotB = {
     },
 
     setEnabled: function(is_enabled, nodeId) {
-        var result = addon.set_enabled(this.instanceID, is_enabled, nodeId);
+        var result = binding.set_enabled(this.instanceID, is_enabled, nodeId);
         if (this.filePath.length > 0) {
             this.write();
         }
@@ -115,7 +116,7 @@ const WotB = {
     },
 
     addLink: function(source, target) {
-        var result = addon.add_link(this.instanceID, source, target);
+        var result = binding.add_link(this.instanceID, source, target);
         if (this.filePath.length > 0) {
             this.write();
         }
@@ -123,7 +124,7 @@ const WotB = {
     },
 
     removeLink: function(source, target) {
-        var result = addon.rem_link(this.instanceID, source, target);
+        var result = binding.rem_link(this.instanceID, source, target);
         if (this.filePath.length > 0) {
             this.write();
         }
@@ -131,12 +132,12 @@ const WotB = {
     },
 
     isOutdistanced: function(node, sentry_requirement, step_max, x_percent) {
-        var distance_result = addon.compute_distance(this.instanceID, node, sentry_requirement, step_max, x_percent);
+        var distance_result = binding.compute_distance(this.instanceID, node, sentry_requirement, step_max, x_percent);
         return distance_result.outdistanced;
     },
 
     detailedDistance: function(node, sentry_requirement, step_max, x_percent) {
-        var distance_result = addon.compute_distance(this.instanceID, node, sentry_requirement, step_max, x_percent);
+        var distance_result = binding.compute_distance(this.instanceID, node, sentry_requirement, step_max, x_percent);
         return {
             nbReached: distance_result.reached,
             nbSuccess: distance_result.success,
@@ -146,21 +147,21 @@ const WotB = {
     },
 
     detailedDistanceV2: function(node, sentry_requirement, step_max, x_percent) {
-        return addon.compute_distance(this.instanceID, node, sentry_requirement, step_max, x_percent);
+        return binding.compute_distance(this.instanceID, node, sentry_requirement, step_max, x_percent);
     },
 
     getPaths: function(from, to, step_max) {
-        return addon.find_paths(this.instanceID, from, to, step_max);
+        return binding.find_paths(this.instanceID, from, to, step_max);
     },
 
     clear: function() {
-        return addon.remove_wot(this.instanceID);
+        return binding.remove_wot(this.instanceID);
     },
 
     resetWoT: function() {
-        var sigStock = addon.getMaxCert(this.instanceID);
-        addon.remove_wot(this.instanceID);
-        this.instanceID = addon.new_memory_instance(sigStock);
+        var sigStock = binding.getMaxCert(this.instanceID);
+        binding.remove_wot(this.instanceID);
+        this.instanceID = binding.new_memory_instance(sigStock);
         if (filePath.length > 0) {
             this.write();
         }

package-lock.json

 {
   "name": "wotb-rs",
-  "version": "0.1.1",
+  "version": "0.1.2",
   "lockfileVersion": 1,
   "requires": true,
   "dependencies": {

package.json

 {
   "name": "wotb-rs",
-  "version": "0.1.1",
+  "version": "0.1.2",
   "description": "Makes Web of Trust computations for the Duniter project.",
   "main": "lib/index.js",
   "repository": {
@@ -10,7 +10,7 @@
   "author": "librelois <elois@ifee.fr>",
   "license": "AGPL-3.0",
   "engines": {
-    "node": ">=9.4.0",
+    "node": ">=8.11.1",
     "npm": ">=5.6.0"
   },
   "dependencies": {