FluentRead/userscript/context.ts at main · FluentRead/FluentRead · GitHub

26 lines (25 loc) · 807 Bytes

export interface UserscriptContentContext {

readonly isInvalid: boolean;

onInvalidated(callback: () => void): void;

invalidate(): void;

}

/** 用显式失效回调模拟 WXT 内容脚本上下文，统一驱动共享功能在离页时清理资源。 */

export function createUserscriptContentContext(): UserscriptContentContext {

const callbacks = new Set<() => void>();

let invalid = false;

return {

get isInvalid() {

return invalid;

onInvalidated(callback) {

if (invalid) callback();

else callbacks.add(callback);

invalidate() {

if (invalid) return;

invalid = true;

callbacks.forEach((callback) => callback());

callbacks.clear();

};

}

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