Extract proxy to its own file

src/object.js

@@ -2,6 +2,7 @@ import _ from './wrap/lodash'
 import log from './log'
 import tdFunction from './function'
 import imitate from './imitate'
+import proxy from './object/proxy'
 
 const DEFAULT_OPTIONS = { excludeMethods: ['then'] }
 
@@ -17,7 +18,7 @@ var fakeObject = function (nameOrType, config, argCount) {
   } else if (_.isObjectLike(nameOrType)) {
     return imitate(nameOrType)
   } else if (_.isString(nameOrType) || argCount === 0) {
-    return createTestDoubleViaProxy(nameOrType, withDefaults(config))
+    return proxy(nameOrType, withDefaults(config))
   } else if (_.isFunction(nameOrType)) {
     ensureFunctionIsNotPassed()
   } else {
@@ -30,38 +31,6 @@ var createTestDoublesForFunctionNames = (names) =>
     acc[funcName] = tdFunction(`.${String(funcName)}`)
   })
 
-var createTestDoubleViaProxy = (name, config) => {
-  ensureProxySupport(name)
-
-  const generateHandler = (internalName) => ({
-    get: (target, propKey) => generateGet(target, propKey, internalName)
-  })
-
-  const generateGet = (target, propKey, internalName) => {
-    if (!target.hasOwnProperty(propKey) && !_.includes(config.excludeMethods, propKey)) {
-      const nameWithProp = `${nameOf(internalName)}.${String(propKey)}`
-      target[propKey] = new Proxy(tdFunction(nameWithProp), generateHandler(nameWithProp))
-    }
-    return target[propKey]
-  }
-
-  return new Proxy({}, generateHandler(name))
-}
-
-var ensureProxySupport = (name) => {
-  if (typeof Proxy === 'undefined') {
-    log.error('td.object', `\
-The current runtime does not have Proxy support, which is what
-testdouble.js depends on when a string name is passed to \`td.object()\`.
-
-More details here:
-  https://github.com/testdouble/testdouble.js/blob/master/docs/4-creating-test-doubles.md#objectobjectname
-
-Did you mean \`td.object(['${name}'])\`?\
-`)
-  }
-}
-
 var ensureFunctionIsNotPassed = () =>
   log.error('td.object', `Functions are not valid arguments to \`td.object\` (as of testdouble@2.0.0). Please use \`td.function()\` or \`td.constructor()\` instead for creating fake functions.`)
 

src/object/proxy.ts

@@ -0,0 +1,37 @@
+import * as theredoc from 'theredoc'
+import _ from '../wrap/lodash'
+import log from '../log'
+import tdFunction from '../function'
+
+export default function proxy (name, { excludeMethods }) {
+  ensureProxySupport(name)
+  return new Proxy({}, generateHandler(name, excludeMethods))
+}
+
+const ensureProxySupport = (name) => {
+  if (typeof Proxy === 'undefined') {
+    log.error('td.object', theredoc`\
+      The current runtime does not have Proxy support, which is what
+      testdouble.js depends on when a string name is passed to \`td.object()\`.
+
+      More details here:
+        https://github.com/testdouble/testdouble.js/blob/master/docs/4-creating-test-doubles.md#objectobjectname
+
+      Did you mean \`td.object(['${name}'])\`?
+    `)
+  }
+}
+
+const generateHandler = (internalName, excludeMethods) => ({
+  get (target, propKey) {
+    return generateGet(target, propKey, internalName, excludeMethods)
+  }
+})
+
+const generateGet = (target, propKey, internalName, excludeMethods) => {
+  if (!target.hasOwnProperty(propKey) && !_.includes(excludeMethods, propKey)) {
+    const nameWithProp = `${internalName || ''}.${String(propKey)}`
+    target[propKey] = new Proxy(tdFunction(nameWithProp), generateHandler(nameWithProp, excludeMethods))
+  }
+  return target[propKey]
+}