mock-violentmonkey/dist/src/violentmonkey-context.js

Mock violentmonkey's globals for testing userscripts

// https://nodejs.org/api/async_context.html
import { AsyncLocalStorage } from 'node:async_hooks';
/* Ideally using empty arrays allows for garbage collection
    in combination with (Better-)WeakMap
 */
const asyncLocalStorage = new AsyncLocalStorage();
/* Abstract away AsyncLocalStorage#getStore to allow for error handling directly */
/**
 * Get the id of the current context
 * @internal
 * @returns The id
 */
const getUserscriptId = () => {
    const store = asyncLocalStorage.getStore();
    if (store === undefined) {
        throw new Error('Could not get context id. Did you call the test with violentMonkeyContext?');
    }
    return store;
};
/**
 * Create a seperate context for seperated storages for each test
 *
 * @param cb The callback to wrap
 * @returns Returns the callback, mainly useful if the function is async
 */
const violentMonkeyContext = (callback) => (...arguments_) => asyncLocalStorage.run(Symbol('mock-violentmonkey/context'), callback, ...arguments_);
export { violentMonkeyContext, getUserscriptId };
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