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mirror of https://github.com/kremalicious/metamask-extension.git synced 2024-12-23 09:52:26 +01:00

remove unused events-proxy, was replaced with module swappable-obj-proxy

This commit is contained in:
kumavis 2018-05-16 21:10:41 -07:00
parent b6eff15bd2
commit 3e04840a71
2 changed files with 0 additions and 43 deletions

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@ -10,7 +10,6 @@ const createMetamaskMiddleware = require('./createMetamaskMiddleware')
const createInfuraClient = require('./createInfuraClient')
const createJsonRpcClient = require('./createJsonRpcClient')
const createLocalhostClient = require('./createLocalhostClient')
// const createEventEmitterProxy = require('../../lib/events-proxy.js')
const { createSwappableProxy, createEventEmitterProxy } = require('swappable-obj-proxy')
const {

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@ -1,42 +0,0 @@
/**
* Returns an EventEmitter that proxies events from the given event emitter
* @param {any} eventEmitter
* @param {object} listeners - The listeners to proxy to
* @returns {any}
*/
module.exports = function createEventEmitterProxy (eventEmitter, listeners) {
let target = eventEmitter
const eventHandlers = listeners || {}
const proxy = /** @type {any} */ (new Proxy({}, {
get: (_, name) => {
// intercept listeners
if (name === 'on') return addListener
if (name === 'setTarget') return setTarget
if (name === 'proxyEventHandlers') return eventHandlers
return (/** @type {any} */ (target))[name]
},
set: (_, name, value) => {
target[name] = value
return true
},
}))
function setTarget (/** @type {EventEmitter} */ eventEmitter) {
target = eventEmitter
// migrate listeners
Object.keys(eventHandlers).forEach((name) => {
/** @type {Array<Function>} */ (eventHandlers[name]).forEach((handler) => target.on(name, handler))
})
}
/**
* Attaches a function to be called whenever the specified event is emitted
* @param {string} name
* @param {Function} handler
*/
function addListener (name, handler) {
if (!eventHandlers[name]) eventHandlers[name] = []
eventHandlers[name].push(handler)
target.on(name, handler)
}
if (listeners) proxy.setTarget(eventEmitter)
return proxy
}