Update build property by targetname (#106)

* feature: update build property by target name
* fix update build property by target name
* Add tests for 'updateBuildProperty' with multiple targets

Co-authored-by: Erisu <ellis.bryan@gmail.com>

lib/pbxProject.js

@@ -1124,11 +1124,36 @@ pbxProject.prototype.removeBuildProperty = function(prop, build_name) {
  * @param prop {String}
  * @param value {String|Array|Object|Number|Boolean}
  * @param build {String} Release or Debug
+ * @param targetName {String} the target which will be updated
  */
-pbxProject.prototype.updateBuildProperty = function(prop, value, build) {
+pbxProject.prototype.updateBuildProperty = function(prop, value, build, targetName) {
+    let validConfigs = [];
+
+    if(targetName) {
+        const target = this.pbxTargetByName(targetName);
+        const targetBuildConfigs = target && target.buildConfigurationList;
+
+        const xcConfigList = this.pbxXCConfigurationList();
+
+        // Collect the UUID's from the configuration of our target
+        for (const configName in xcConfigList) {
+            if (!COMMENT_KEY.test(configName) && targetBuildConfigs === configName) {
+                const buildVariants = xcConfigList[configName].buildConfigurations;
+
+                for (const item of buildVariants) {
+                    validConfigs.push(item.value);
+                }
+
+                break;
+            }
+        }
+    }
+
     var configs = this.pbxXCBuildConfigurationSection();
     for (var configName in configs) {
         if (!COMMENT_KEY.test(configName)) {
+            if (targetName && !validConfigs.includes(configName)) continue;
+
             var config = configs[configName];
             if ( (build && config.name === build) || (!build) ) {
                 config.buildSettings[prop] = value;