rename require() to requirejs() on flow.org

Summary:
js_of_ocaml 3.0 assumes that if `require` is in global scope, then the
environment is node and tries to use the `fs` module.
ocsigen/js_of_ocaml#626

as a workaround, rename `require` to `requirejs` using the pattern discussed in
the requirejs docs linked from the comments.

Reviewed By: samwgoldman

Differential Revision: D6140213

fbshipit-source-id: 7818d9a21ccd686b5454a0a2f07933a685526f70

website/_assets/js/flow-loader.js.es6

@@ -59,7 +59,7 @@ export function load(version) {
     `/static/${version}/flowlib/react.js`,
   ];
   const flowLoader = new Promise(function(resolve) {
-    require([`/static/${version}/flow.js`], resolve);
+    requirejs([`/static/${version}/flow.js`], resolve);
   });
   return Promise.all([flowLoader, ...libs.map(get)])
     .then(function([_flow, ...contents]) {

website/_assets/js/tryFlow.js.es6.liquid

@@ -268,7 +268,7 @@ function createEditor(
 ) {
   const defaultFlow = initFlow(flowVersion);
 
-  require([
+  requirejs([
     'codemirror/addon/lint/lint',
     'codemirror/mode/javascript/javascript',
     'codemirror/mode/xml/xml',

website/_assets/js/tryFlowWorker.js

@@ -64,7 +64,7 @@ this.onmessage = function(e) {
 function getFlow(version) {
   if (!(version in versionCache)) {
     versionCache[version] = new Promise(function(resolve) {
-      require(['flow-loader'], function(FlowLoader) {
+      requirejs(['flow-loader'], function(FlowLoader) {
         resolve(FlowLoader.load(version));
       });
     });

website/_layouts/default.html

@@ -29,7 +29,7 @@
     {% endif %}
     <script type="text/javascript" src="{% asset_path 'require_2_3_3.js' %}"></script>
     <script type="text/javascript">
-      require.config({
+      requirejs.config({
         baseUrl: '/assets',
         waitSeconds: 30,
         shim: {
@@ -78,12 +78,12 @@
         return tether;
       });
 
-      require([
+      requirejs([
         'bootstrap',
         {% if page.search or layout.search %}'{% asset_name "search" %}',{% endif %}
       ]);
       {% if page.editor or layout.editor %}
-      require(['{% asset_name "editor" %}'], function(Editor) {
+      requirejs(['{% asset_name "editor" %}'], function(Editor) {
         Editor.init();
       });
       {% endif %}

website/en/docs/install.html

@@ -65,5 +65,5 @@
 </div>
 
 <script type="text/javascript">
-  require(['{% asset_name install %}']);
+  requirejs(['{% asset_name install %}']);
 </script>

website/try.html

@@ -23,7 +23,7 @@
 </div>
 
 <script type="text/javascript">
-  require(['{% asset_name "tryFlow" %}'], function(tryFlow) {
+  requirejs(['{% asset_name "tryFlow" %}'], function(tryFlow) {
     tryFlow.createEditor(
       '{{ site.flow.version }}',
       document.getElementById("code"),