44 lines
754 B
JavaScript
44 lines
754 B
JavaScript
class Speaker {
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#callbacks = new Set()
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#immediate
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#scheduled = []
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#current
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constructor(immediate, current=[]) {
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this.#immediate = immediate
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this.#current = current
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}
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listen(callback) {
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this.#callbacks.add(callback)
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return this.#current
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}
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speak(...args) {
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this.#current = args
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if (this.#immediate) {
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for (let callback of this.#callbacks) {
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callback(...args)
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}
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} else {
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if (!this.#scheduled.length) {
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queueMicrotask(() => {
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for (let args of this.#scheduled) {
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for (let callback of this.#callbacks) {
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callback(...args)
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}
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}
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this.#scheduled = []
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})
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}
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this.#scheduled.push(args)
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}
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}
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silence(callback) {
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this.#callbacks.delete(callbacks)
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}
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}
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export default Speaker
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