overleaf/services/web/frontend/js/features/source-editor/utils/effects.ts

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import { StateEffectType, Transaction } from '@codemirror/state'
import { ViewUpdate } from '@codemirror/view'
export const hasEffect =
<T>(effectType: StateEffectType<T>) =>
(tr: Transaction) =>
tr.effects.some(effect => effect.is(effectType))
export const updateHasEffect =
<T>(effectType: StateEffectType<T>) =>
(update: ViewUpdate) =>
update.transactions.some(tr =>
tr.effects.some(effect => effect.is(effectType))
)
export const findEffect =
<T>(effectType: StateEffectType<T>) =>
(tr: Transaction) =>
tr.effects.find(effect => effect.is(effectType))