Widgets are compiled before modules are loaded, leading to compile error

At compile time, in the tiddlyclip plugin, js user functions are load dynamically with a filter, this is broken in 5.4.0. I have produced a minimum test case at https://startup540err.tiddlyhost.com/ and see this on the console: Error executing boot module $:/bj/modules/widgets/broken.js: TypeError: can't access property "measure", $tw.perf is undefined anonymous/</exports.compileFilter@$:/core/modules/filters.js:378:19 anonymous/</exports.filterTiddlers@$:/core/modules/filters.js:236:16 anonymous/</<@$:/bj/modules/widgets/broken.js:31:19 The same works with 5.3.8 - see https://startup38working.tiddlyhost.com/ I think this is caused by moving ` var widget = require("$:/core/modules/widgets/widget.js");` into `$:/core/modules/startup/load-modules.js`