Create separate callbackify function

1 files changed, 9 insertions, 5 deletions

diff --git a/lib/browser.js b/lib/browser.js
index a7f0039..bd34c13 100644
--- a/lib/browser.js
+++ b/lib/browser.js
@@ -7,11 +7,15 @@ exports.readFileInputOnChange = readFileInputOnChange;
 exports.standardOptions = mammoth.standardOptions;
 exports.htmlPaths = mammoth.htmlPaths;
 
-exports.convertDocumentToHtml = function() {
-    var args = Array.slice(arguments, 0, arguments.length - 1);
-    var callback = arguments[arguments.length - 1];
-    satisfyCallback(mammoth.convertDocumentToHtml.apply(this, arguments), callback);
-};
+exports.convertDocumentToHtml = callbackify(mammoth.convertDocumentToHtml);
+
+function callbackify(func) {
+    return function() {
+        var args = Array.prototype.slice.call(arguments, 0, arguments.length - 1);
+        var callback = arguments[arguments.length - 1];
+        satisfyCallback(func.apply(this, args), callback);
+    };
+}
 
 function readFileInputOnChange(inputElement, callback) {
     function handleFileSelect(event) {