@master/css-devtools-hook/dist/index.mjs

Devtools hook for Master CSS

const devToolsHook = {
    listeners: new Map(),
    on (event, callback) {
        if (!this.listeners.has(event)) {
            this.listeners.set(event, new Set());
        }
        this.listeners.get(event)?.add(callback);
    },
    off (event, callback) {
        this.listeners.get(event)?.delete(callback);
    },
    emit (event, ...args) {
        this.listeners.get(event)?.forEach((listener)=>listener(...args));
    }
};

function installHook(global = globalThis) {
    const hook = global.__MASTER_CSS_DEVTOOLS_HOOK__;
    if (hook) return hook;
    return global.__MASTER_CSS_DEVTOOLS_HOOK__ = devToolsHook;
}

export { devToolsHook as default, devToolsHook, installHook };