codemirror-shadow-1/src/edit/utils.js

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import { clearCaches } from "../measurement/position_measurement.js"

export function themeChanged(cm) {
  cm.display.wrapper.className = cm.display.wrapper.className.replace(/\s*cm-s-\S+/g, "") +
    cm.options.theme.replace(/(^|\s)\s*/g, " cm-s-")
  clearCaches(cm)
}