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wip(menu): perf menu

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vben
2020-12-15 00:13:23 +08:00
parent ec7efcf0f0
commit a65ad9edd5
80 changed files with 1338 additions and 972 deletions
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10
src/utils/mitt.ts
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@@ -6,13 +6,13 @@
* @returns {Function} The function's instance
*/
export default class Mitt {
private cache: Map<string, Array<(data: any) => void>>;
private cache: Map<string | Symbol, Array<(...data: any) => void>>;
constructor(all = []) {
// A Map of event names to registered handler functions.
this.cache = new Map(all);
}
once(type: string, handler: Fn) {
once(type: string | Symbol, handler: Fn) {
const decor = (...args: any[]) => {
handler && handler.apply(this, args);
this.off(type, decor);
@@ -27,7 +27,7 @@ export default class Mitt {
* @param {string|symbol} type Type of event to listen for, or `"*"` for all events
* @param {Function} handler Function to call in response to given event
*/
on(type: string, handler: Fn) {
on(type: string | Symbol, handler: Fn) {
const handlers = this.cache.get(type);
const added = handlers && handlers.push(handler);
if (!added) {
@@ -41,7 +41,7 @@ export default class Mitt {
* @param {string|symbol} type Type of event to unregister `handler` from, or `"*"`
* @param {Function} handler Handler function to remove
*/
off(type: string, handler: Fn) {
off(type: string | Symbol, handler: Fn) {
const handlers = this.cache.get(type);
if (handlers) {
handlers.splice(handlers.indexOf(handler) >>> 0, 1);
@@ -57,7 +57,7 @@ export default class Mitt {
* @param {string|symbol} type The event type to invoke
* @param {*} [evt] Any value (object is recommended and powerful), passed to each handler
*/
emit(type: string, evt: any) {
emit(type: string | Symbol, evt: any) {
for (const handler of (this.cache.get(type) || []).slice()) handler(evt);
for (const handler of (this.cache.get('*') || []).slice()) handler(type, evt);
}