aborter/dist/signal.js

A minimal reimplementation of AbortController and AbortSignal.

/* IMPORT */
/* MAIN */
class AbortSignal {
    constructor() {
        /* VARIABLES */
        this.aborted = false;
        this.listeners = new Set();
    }
    /* EVENTS API */
    addEventListener(event, listener) {
        if (event !== 'abort')
            return;
        this.listeners.add(listener);
    }
    removeEventListener(event, listener) {
        if (event !== 'abort')
            return;
        this.listeners.delete(listener);
    }
    dispatchEvent(event) {
        if (event !== 'abort')
            return false;
        [...this.listeners].forEach(listener => listener());
        return true;
    }
}
/* EXPORT */
export default AbortSignal;