Merge pull request #4603 from MetaMask/v4.8.0

V4.8.0

1 files changed, 22 insertions, 1 deletions

diff --git a/app/scripts/inpage.js b/app/scripts/inpage.js
index 6d16eebd4..7dd7fda02 100644
--- a/app/scripts/inpage.js
+++ b/app/scripts/inpage.js
@@ -38,9 +38,30 @@ web3.setProvider = function () {
   log.debug('MetaMask - overrode web3.setProvider')
 }
 log.debug('MetaMask - injected web3')
-// export global web3, with usage-detection
+
 setupDappAutoReload(web3, inpageProvider.publicConfigStore)
 
+// export global web3, with usage-detection and deprecation warning
+
+/* TODO: Uncomment this area once auto-reload.js has been deprecated:
+let hasBeenWarned = false
+global.web3 = new Proxy(web3, {
+  get: (_web3, key) => {
+    // show warning once on web3 access
+    if (!hasBeenWarned && key !== 'currentProvider') {
+      console.warn('MetaMask: web3 will be deprecated in the near future in favor of the ethereumProvider \nhttps://github.com/MetaMask/faq/blob/master/detecting_metamask.md#web3-deprecation')
+      hasBeenWarned = true
+    }
+    // return value normally
+    return _web3[key]
+  },
+  set: (_web3, key, value) => {
+    // set value normally
+    _web3[key] = value
+  },
+})
+*/
+
 // set web3 defaultAccount
 inpageProvider.publicConfigStore.subscribe(function (state) {
   web3.eth.defaultAccount = state.selectedAddress