in polymer/lib/utils/require_shim.js [16:36]
function polyfillGoogRequire() {
// For code that doesn't compile or use the goog debug loader, we need to stub
// out goog.require
if (!window.goog) {
window.goog = {
require(id) {
if (id === 'webcomponentsjs.custom_elements.auto_es5_shim') {
// we're in a (deprecated) uncompiled configuration, that file is
// unnecessary
return;
}
throw new Error(
`Called goog.require without loading //javascript/closure:base`);
}
};
// For uncompiled tests that want to only do a goog.require if it's a
// real implementation of goog.require.
window.goog.require['isDevModeNoOpImpl'] = true;
}
}