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script with type=importmap must not have async Web Standard

Description

A script element with type=importmap must not have an async attribute.

Applicable standards

Change history

  • 2026.60 Apr 2026 Added.

This page describes a web site issue detected in HTML documents by SortSite Desktop and OnDemand Suite.

Rule ID: W3cHtml5ScriptForbidden-importmap–async