1 files changed, 0 insertions, 67 deletions
diff --git a/app/scripts/lib/createErrorMiddleware.js b/app/scripts/lib/createErrorMiddleware.js
deleted file mode 100644
index 7f6a4bd73..000000000
--- a/app/scripts/lib/createErrorMiddleware.js
+++ /dev/null
@@ -1,67 +0,0 @@
-const log = require('loglevel')
-
-/**
- * JSON-RPC error object
- *
- * @typedef {Object} RpcError
- * @property {number} code - Indicates the error type that occurred
- * @property {Object} [data] - Contains additional information about the error
- * @property {string} [message] - Short description of the error
- */
-
-/**
- * Middleware configuration object
- *
- * @typedef {Object} MiddlewareConfig
- * @property {boolean} [override] - Use RPC_ERRORS message in place of provider message
- */
-
-/**
- * Map of standard and non-standard RPC error codes to messages
- */
-const RPC_ERRORS = {
-  1: 'An unauthorized action was attempted.',
-  2: 'A disallowed action was attempted.',
-  3: 'An execution error occurred.',
-  [-32600]: 'The JSON sent is not a valid Request object.',
-  [-32601]: 'The method does not exist / is not available.',
-  [-32602]: 'Invalid method parameter(s).',
-  [-32603]: 'Internal JSON-RPC error.',
-  [-32700]: 'Invalid JSON was received by the server. An error occurred on the server while parsing the JSON text.',
-  internal: 'Internal server error.',
-  unknown: 'Unknown JSON-RPC error.',
-}
-
-/**
- * Modifies a JSON-RPC error object in-place to add a human-readable message,
- * optionally overriding any provider-supplied message
- *
- * @param {RpcError} error - JSON-RPC error object
- * @param {boolean} override - Use RPC_ERRORS message in place of provider message
- */
-function sanitizeRPCError (error, override) {
-  if (error.message && !override) { return error }
-  const message = error.code > -31099 && error.code < -32100 ? RPC_ERRORS.internal : RPC_ERRORS[error.code]
-  error.message = message || RPC_ERRORS.unknown
-}
-
-/**
- * json-rpc-engine middleware that both logs standard and non-standard error
- * messages and ends middleware stack traversal if an error is encountered
- *
- * @param {MiddlewareConfig} [config={override:true}] - Middleware configuration
- * @returns {Function} json-rpc-engine middleware function
- */
-function createErrorMiddleware ({ override = true } = {}) {
-  return (req, res, next) => {
-    next(done => {
-      const { error } = res
-      if (!error) { return done() }
-      sanitizeRPCError(error)
-      log.error(`MetaMask - RPC Error: ${error.message}`, error)
-      done()
-    })
-  }
-}
-
-module.exports = createErrorMiddleware