Improve module support

contain-element-module.js

@@ -1,4 +1,4 @@
-function ContainElement(options) {
+module.exports = function(options) {
     var scaleFactor = 1,
         element = options.element || document.getElementById(options.id),
         elementWidth = options.width || element.offsetWidth,
@@ -144,6 +144,4 @@ function ContainElement(options) {
 
     // External function to return the current scale factor
     this.getScale = function() { return scaleFactor; };
-}
+};
-
-export default ContainElement;

gulpfile.js

@@ -1,9 +1,15 @@
 const gulp = require("gulp"),
     ugly = require("gulp-uglify"),
-    concat = require("gulp-concat");
+    concat = require("gulp-concat"),
+    insert = require("gulp-insert");
 
 gulp.task("module", function() {
-    return gulp.src([ "contain-element.js", "module-template.js" ])
+    return gulp.src([ "contain-element.js" ])
+        .pipe(insert.transform(function(contents) {
+            return contents
+                .replace(/^function ContainElement/, "module.exports = function")
+                .replace(/\n\}/, "\n};");
+        }))
         .pipe(concat("contain-element-module.js"))
         .pipe(gulp.dest("./"));
 });

module-template.js

@@ -1 +0,0 @@
-export default ContainElement;

package-lock.json

@@ -1,6 +1,6 @@
 {
   "name": "contain-element",
-  "version": "1.6.2",
+  "version": "1.6.3",
   "lockfileVersion": 1,
   "requires": true,
   "dependencies": {
@@ -617,6 +617,16 @@
         }
       }
     },
+    "gulp-insert": {
+      "version": "0.5.0",
+      "resolved": "https://registry.npmjs.org/gulp-insert/-/gulp-insert-0.5.0.tgz",
+      "integrity": "sha1-MjE/E+SiPPWsylzl8MCAkjx3hgI=",
+      "dev": true,
+      "requires": {
+        "readable-stream": "1.1.14",
+        "streamqueue": "0.0.6"
+      }
+    },
     "gulp-uglify": {
       "version": "3.0.0",
       "resolved": "https://registry.npmjs.org/gulp-uglify/-/gulp-uglify-3.0.0.tgz",
@@ -1463,6 +1473,15 @@
       "integrity": "sha1-pB6tGm1ggc63n2WwYZAbbY89HQ8=",
       "dev": true
     },
+    "streamqueue": {
+      "version": "0.0.6",
+      "resolved": "https://registry.npmjs.org/streamqueue/-/streamqueue-0.0.6.tgz",
+      "integrity": "sha1-ZvX17JTpuK8knkrsLdH3Qb/pTeM=",
+      "dev": true,
+      "requires": {
+        "readable-stream": "1.1.14"
+      }
+    },
     "string_decoder": {
       "version": "0.10.31",
       "resolved": "https://registry.npmjs.org/string_decoder/-/string_decoder-0.10.31.tgz",

package.json

@@ -1,7 +1,7 @@
 {
   "name": "contain-element",
   "description": "A JavaScript plugin to contain an element within its parent element.",
-  "version": "1.6.3",
+  "version": "1.6.4",
   "license": "MIT",
   "main": "contain-element.min.js",
   "homepage": "https://github.com/WilliamsNY/contain-element",
@@ -40,6 +40,7 @@
   "devDependencies": {
     "gulp": "^3.9.1",
     "gulp-concat": "^2.6.1",
+    "gulp-insert": "^0.5.0",
     "gulp-uglify": "^3.0.0"
   },
   "scripts": {