mirror of
https://github.com/kremalicious/metamask-extension.git
synced 2024-11-27 04:46:10 +01:00
102 lines
2.6 KiB
JavaScript
102 lines
2.6 KiB
JavaScript
/*global Web3*/
|
|
|
|
// need to make sure we aren't affected by overlapping namespaces
|
|
// and that we dont affect the app with our namespace
|
|
// mostly a fix for web3's BigNumber if AMD's "define" is defined...
|
|
let __define
|
|
|
|
/**
|
|
* Caches reference to global define object and deletes it to
|
|
* avoid conflicts with other global define objects, such as
|
|
* AMD's define function
|
|
*/
|
|
const cleanContextForImports = () => {
|
|
__define = global.define
|
|
try {
|
|
global.define = undefined
|
|
} catch (_) {
|
|
console.warn('MetaMask - global.define could not be deleted.')
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Restores global define object from cached reference
|
|
*/
|
|
const restoreContextAfterImports = () => {
|
|
try {
|
|
global.define = __define
|
|
} catch (_) {
|
|
console.warn('MetaMask - global.define could not be overwritten.')
|
|
}
|
|
}
|
|
|
|
cleanContextForImports()
|
|
|
|
import log from 'loglevel'
|
|
import LocalMessageDuplexStream from 'post-message-stream'
|
|
import MetamaskInpageProvider from 'metamask-inpage-provider'
|
|
|
|
// TODO:deprecate:Q1-2020
|
|
import 'web3/dist/web3.min.js'
|
|
|
|
import setupDappAutoReload from './lib/auto-reload.js'
|
|
|
|
restoreContextAfterImports()
|
|
|
|
log.setDefaultLevel(process.env.METAMASK_DEBUG ? 'debug' : 'warn')
|
|
|
|
//
|
|
// setup plugin communication
|
|
//
|
|
|
|
// setup background connection
|
|
const metamaskStream = new LocalMessageDuplexStream({
|
|
name: 'inpage',
|
|
target: 'contentscript',
|
|
})
|
|
|
|
// compose the inpage provider
|
|
const inpageProvider = new MetamaskInpageProvider(metamaskStream)
|
|
|
|
// set a high max listener count to avoid unnecesary warnings
|
|
inpageProvider.setMaxListeners(100)
|
|
|
|
// Work around for web3@1.0 deleting the bound `sendAsync` but not the unbound
|
|
// `sendAsync` method on the prototype, causing `this` reference issues
|
|
const proxiedInpageProvider = new Proxy(inpageProvider, {
|
|
// straight up lie that we deleted the property so that it doesnt
|
|
// throw an error in strict mode
|
|
deleteProperty: () => true,
|
|
})
|
|
|
|
//
|
|
// TODO:deprecate:Q1-2020
|
|
//
|
|
|
|
// setup web3
|
|
|
|
if (typeof window.web3 !== 'undefined') {
|
|
throw new Error(`MetaMask detected another web3.
|
|
MetaMask will not work reliably with another web3 extension.
|
|
This usually happens if you have two MetaMasks installed,
|
|
or MetaMask and another web3 extension. Please remove one
|
|
and try again.`)
|
|
}
|
|
|
|
const web3 = new Web3(proxiedInpageProvider)
|
|
web3.setProvider = function () {
|
|
log.debug('MetaMask - overrode web3.setProvider')
|
|
}
|
|
log.debug('MetaMask - injected web3')
|
|
|
|
proxiedInpageProvider._web3Ref = web3.eth
|
|
|
|
// setup dapp auto reload AND proxy web3
|
|
setupDappAutoReload(web3, inpageProvider._publicConfigStore)
|
|
|
|
//
|
|
// end deprecate:Q1-2020
|
|
//
|
|
|
|
window.ethereum = proxiedInpageProvider
|