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import {elementExists} from 'select-dom';
import delegate, {DelegateEventHandler} from 'delegate-it';
type DelegateFieldEvent = DelegateEventHandler<KeyboardEvent, HTMLTextAreaElement>;
function onFieldKeydown(selector: string, callback: DelegateFieldEvent, signal: AbortSignal): void {
delegate(selector as 'textarea', 'keydown', event => {
const field = event.delegateTarget;
// The suggester is GitHub’s autocomplete dropdown
if (elementExists('.suggester', field.form!) || event.isComposing) {
return;
}
callback(event);
}, {
// Adds support for `esc` key; GitHub seems to use `stopPropagation` on it
capture: true,
signal,
});
}
export function onCommentFieldKeydown(callback: DelegateFieldEvent, signal: AbortSignal): void {
onFieldKeydown('.js-comment-field, #commit-description-textarea, #merge_message_field', callback, signal);
}
export function onConversationTitleFieldKeydown(callback: DelegateFieldEvent, signal: AbortSignal): void {
onFieldKeydown('#issue_title, #pull_request_title', callback, signal);
}
export function onCommitTitleFieldKeydown(callback: DelegateFieldEvent, signal: AbortSignal): void {
onFieldKeydown('#commit-summary-input', callback, signal);
}
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