Not really the same js in 9.0 ...

mis_builder/static/src/js/mis_builder.js

@@ -1,8 +1,18 @@
-openerp.mis_builder = function(instance) {
+odoo.define('mis.builder', function (require) {
+"use strict";
 
-    instance.mis_builder.MisReport = instance.web.form.FormWidget.extend({
-        template: "mis_builder.MisReport",
+var core = require('web.core');
+var form_common = require('web.form_common');
+var Model = require('web.DataModel');
+var data = require('web.data');
 
+var MisReport = form_common.FormWidget.extend({
+    /**
+     * @constructs instance.mis_builder.MisReport
+     * @extends instance.web.form.FormWidget
+     * 
+     */
+    template: "mis_builder.MisReport",
     init: function() {
         this._super.apply(this, arguments);
         this.mis_report_data = null;
@@ -11,10 +21,10 @@ openerp.mis_builder = function(instance) {
     start: function() {
         this._super.apply(this, arguments);
         var self = this;
-            new instance.web.Model("mis.report.instance").call(
+        new Model("mis.report.instance").call(
             "compute", 
             [self.getParent().dataset.context.active_id], 
-                {'context': new instance.web.CompoundContext()}
+            {'context': new data.CompoundContext()}
         ).then(function(result){
             self.mis_report_data = result;
             self.renderElement();
@@ -31,10 +41,10 @@ openerp.mis_builder = function(instance) {
         if (drilldown) {
             var period_id = JSON.parse($(event.target).data("period-id"));
             var val_c = JSON.parse($(event.target).data("expr"));
-                new instance.web.Model("mis.report.instance.period").call(
+            new Model("mis.report.instance.period").call(
                 "drilldown",
                 [period_id, val_c],
-                    {'context': new instance.web.CompoundContext()}
+                {'context': new data.CompoundContext()}
             ).then(function(result) {
                 if (result) {
                     self.do_action(result);
@@ -44,5 +54,6 @@ openerp.mis_builder = function(instance) {
     },
 });
 
-    instance.web.form.custom_widgets.add('mis_report', 'instance.mis_builder.MisReport');
-}
+core.form_custom_registry.add('mis_report', MisReport);
+
+});