tasks: add uber hacky fix for plotly.min.js in require.js envs

- which is basically what plotly/plotly.py#545
  implemented
- see browserify/webworkify#29 for more info

Author: etpinard

tasks/bundle.js

@@ -7,6 +7,7 @@ var UglifyJS = require('uglify-js');
 var constants = require('./util/constants');
 var common = require('./util/common');
 var compressAttributes = require('./util/compress_attributes');
+var patchMinified = require('./util/patch_minified');
 var doesFileExist = common.doesFileExist;
 
 /*
@@ -83,6 +84,7 @@ function _bundle(pathToIndex, pathToBundle, opts) {
 
         if(outputMinified) {
             var minifiedCode = UglifyJS.minify(buf.toString(), constants.uglifyOptions).code;
+            minifiedCode = patchMinified(minifiedCode);
 
             fs.writeFile(pathToMinBundle, minifiedCode, function(err) {
                 if(err) throw err;

tasks/util/patch_minified.js

@@ -0,0 +1,15 @@
+var STR_TO_REPLACE = 'require("+a(r)+");';
+var STR_NEW = 'require("+ a(r) +");';
+
+/* Uber hacky in-house fix to
+ *
+ * https://github.com/substack/webworkify/issues/29
+ *
+ * so that plotly.min.js loads in Jupyter NBs, more info here:
+ *
+ * https://github.com/plotly/plotly.py/pull/545
+ *
+ */
+module.exports = function patchMinified(minifiedCode) {
+    return minifiedCode.replace(STR_TO_REPLACE, STR_NEW);
+};