merge staging and do a little lint compliance

lib/metadata.js

@@ -21,16 +21,49 @@ var isValidOwner = function (owner) {
 
 // ["RESTRICT_ACCESS", [true], 1561623438989]
 // ["RESTRICT_ACCESS", [false], 1561623438989]
-// commands.RESTRICT_ACCESS = function (meta, args) {};
+commands.RESTRICT_ACCESS = function (meta, args) {
+    if (!Array.isArray(args) || typeof(args[0]) !== 'boolean') {
+        throw new Error('INVALID_STATE');
+    }
+
+    var bool = args[0];
+
+    // reject the proposed command if there is no change in state
+    if (meta.restricted === bool) { return false; }
+
+    // apply the new state
+    meta.restricted = args[0];
+
+    // if you're disabling access restrictions then you can assume
+    // then there is nothing more to do. Leave the existing list as-is
+    if (!bool) { return true; }
+
+    // you're all set if an allow list already exists
+    if (Array.isArray(meta.allowed)) { return true; }
+
+    // otherwise define it
+    meta.allowed = [];
+
+    return true;
+};
 
 // ["ADD_ALLOWED", ["7eEqelGso3EBr5jHlei6av4r9w2B9XZiGGwA1EgZ-5I=", ...], 1561623438989]
-// commands.ADD_ALLOWED = function (meta, args) {};
+commands.ADD_ALLOWED = function (meta, args) {
+    args = args;
+    throw new Error('NOT_IMPLEMENTED');
+};
 
 // ["RM_ALLOWED", ["7eEqelGso3EBr5jHlei6av4r9w2B9XZiGGwA1EgZ-5I=", ...], 1561623438989]
-// commands.RM_ALLOWED = function (meta, args) {};
+commands.RM_ALLOWED = function (meta, args) {
+    args = args;
+    throw new Error('NOT_IMPLEMENTED');
+};
 
 // ["RESET_ALLOWED", ["7eEqelGso3EBr5jHlei6av4r9w2B9XZiGGwA1EgZ-5I=", ...], 1561623438989]
-// commands.RESET_ALLOWED = function (meta, args) {};
+commands.RESET_ALLOWED = function (meta, args) {
+    args = args;
+    throw new Error('NOT_IMPLEMENTED');
+};
 
 // ["ADD_OWNERS", ["7eEqelGso3EBr5jHlei6av4r9w2B9XZiGGwA1EgZ-5I="], 1561623438989]
 commands.ADD_OWNERS = function (meta, args) {