From 3f606d8c75a45a2869527f70e1cd6e1397df3b0d Mon Sep 17 00:00:00 2001
From: ansuz <ansuz@transitiontech.ca>
Date: Fri, 14 Feb 2020 16:45:53 -0500
Subject: [PATCH] remove some duplicated code

---
 lib/deduplicate.js | 11 -----------
 lib/hk-util.js     |  4 ++--
 lib/metadata.js    |  2 +-
 lib/once.js        |  7 -------
 4 files changed, 3 insertions(+), 21 deletions(-)
 delete mode 100644 lib/deduplicate.js
 delete mode 100644 lib/once.js

diff --git a/lib/deduplicate.js b/lib/deduplicate.js
deleted file mode 100644
index 3ad62e6b0..000000000
--- a/lib/deduplicate.js
+++ /dev/null
@@ -1,11 +0,0 @@
-// remove duplicate elements in an array
-module.exports = function (O) {
-    // make a copy of the original array
-    var A = O.slice();
-    for (var i = 0; i < A.length; i++) {
-        for (var j = i + 1; j < A.length; j++) {
-            if (A[i] === A[j]) { A.splice(j--, 1); }
-        }
-    }
-    return A;
-};
diff --git a/lib/hk-util.js b/lib/hk-util.js
index 0a661c6c8..3221d50a2 100644
--- a/lib/hk-util.js
+++ b/lib/hk-util.js
@@ -3,7 +3,7 @@
 var HK = module.exports;
 
 const nThen = require('nthen');
-const Once = require("./once");
+const Util = require("./common-util");
 const Meta = require("./metadata");
 const Nacl = require('tweetnacl/nacl-fast');
 
@@ -182,7 +182,7 @@ const computeIndex = function (Env, channelName, cb) {
 
     const ref = {};
 
-    const CB = Once(cb);
+    const CB = Util.once(cb);
 
     const offsetByHash = {};
     let size = 0;
diff --git a/lib/metadata.js b/lib/metadata.js
index 2b3a0b737..220327456 100644
--- a/lib/metadata.js
+++ b/lib/metadata.js
@@ -1,6 +1,6 @@
 var Meta = module.exports;
 
-var deduplicate = require("./deduplicate");
+var deduplicate = require("./common-util").deduplicateString;
 
 /*  Metadata fields:
 
diff --git a/lib/once.js b/lib/once.js
deleted file mode 100644
index a851af259..000000000
--- a/lib/once.js
+++ /dev/null
@@ -1,7 +0,0 @@
-module.exports = function (f, g) {
-    return function () {
-        if (!f) { return; }
-        f.apply(this, Array.prototype.slice.call(arguments));
-        f = g;
-    };
-};