diff --git a/packages/netlify-cms-backend-bitbucket/package.json b/packages/netlify-cms-backend-bitbucket/package.json
index 41c9a286..4f2cb64e 100644
--- a/packages/netlify-cms-backend-bitbucket/package.json
+++ b/packages/netlify-cms-backend-bitbucket/package.json
@@ -20,11 +20,7 @@
     "semaphore": "^1.1.0"
   },
   "devDependencies": {
-    "@babel/cli": "^7.0.0-beta.54",
-    "@babel/core": "^7.0.0-beta.54",
     "cross-env": "^5.2.0",
-    "rollup": "^0.63.2",
-    "rollup-plugin-babel": "^4.0.0-beta.7",
     "webpack": "^4.16.1",
     "webpack-cli": "^3.1.0"
   },
diff --git a/packages/netlify-cms-backend-git-gateway/package.json b/packages/netlify-cms-backend-git-gateway/package.json
index 9ba4170d..75aceda2 100644
--- a/packages/netlify-cms-backend-git-gateway/package.json
+++ b/packages/netlify-cms-backend-git-gateway/package.json
@@ -14,13 +14,14 @@
   "sideEffects": false,
   "scripts": {
     "watch": "webpack -w",
-    "build": "webpack"
+    "build": "cross-env NODE_ENV=production webpack"
   },
   "dependencies": {
     "gotrue-js": "^0.9.22",
     "jwt-decode": "^2.2.0"
   },
   "devDependencies": {
+    "cross-env": "^5.2.0",
     "webpack": "^4.16.1",
     "webpack-cli": "^3.1.0"
   },
diff --git a/packages/netlify-cms-backend-github/package.json b/packages/netlify-cms-backend-github/package.json
index b5a3f8ae..fd63aa26 100644
--- a/packages/netlify-cms-backend-github/package.json
+++ b/packages/netlify-cms-backend-github/package.json
@@ -13,13 +13,14 @@
   "sideEffects": false,
   "scripts": {
     "watch": "webpack -w",
-    "build": "webpack"
+    "build": "cross-env NODE_ENV=production webpack"
   },
   "dependencies": {
     "js-base64": "^2.4.8",
     "semaphore": "^1.1.0"
   },
   "devDependencies": {
+    "cross-env": "^5.2.0",
     "webpack": "^4.16.1",
     "webpack-cli": "^3.1.0"
   },
diff --git a/packages/netlify-cms-backend-gitlab/package.json b/packages/netlify-cms-backend-gitlab/package.json
index 98fef69d..dcdf0da7 100644
--- a/packages/netlify-cms-backend-gitlab/package.json
+++ b/packages/netlify-cms-backend-gitlab/package.json
@@ -13,13 +13,14 @@
   "sideEffects": false,
   "scripts": {
     "watch": "webpack -w",
-    "build": "webpack"
+    "build": "cross-env NODE_ENV=production webpack"
   },
   "dependencies": {
     "js-base64": "^2.4.8",
     "semaphore": "^1.1.0"
   },
   "devDependencies": {
+    "cross-env": "^5.2.0",
     "webpack": "^4.16.1",
     "webpack-cli": "^3.1.0"
   },
diff --git a/packages/netlify-cms-backend-test/package.json b/packages/netlify-cms-backend-test/package.json
index b29eca86..b4e3aa3e 100644
--- a/packages/netlify-cms-backend-test/package.json
+++ b/packages/netlify-cms-backend-test/package.json
@@ -12,12 +12,13 @@
   "sideEffects": false,
   "scripts": {
     "watch": "webpack -w",
-    "build": "webpack"
+    "build": "cross-env NODE_ENV=production webpack"
   },
   "dependencies": {
     "uuid": "^3.3.2"
   },
   "devDependencies": {
+    "cross-env": "^5.2.0",
     "webpack": "^4.16.1",
     "webpack-cli": "^3.1.0"
   },
diff --git a/packages/netlify-cms-core/package.json b/packages/netlify-cms-core/package.json
index 85ef2910..86e3d73a 100644
--- a/packages/netlify-cms-core/package.json
+++ b/packages/netlify-cms-core/package.json
@@ -9,7 +9,7 @@
   ],
   "scripts": {
     "watch": "webpack-dev-server --hot --open",
-    "build": "webpack"
+    "build": "cross-env NODE_ENV=production webpack"
   },
   "keywords": [
     "netlify",
@@ -66,6 +66,7 @@
     "what-input": "^5.0.3"
   },
   "devDependencies": {
+    "cross-env": "^5.2.0",
     "css-loader": "^1.0.0",
     "friendly-errors-webpack-plugin": "^1.7.0",
     "to-string-loader": "^1.1.5",
diff --git a/packages/netlify-cms-editor-component-image/package.json b/packages/netlify-cms-editor-component-image/package.json
index c2fcc173..4d3d2ec9 100644
--- a/packages/netlify-cms-editor-component-image/package.json
+++ b/packages/netlify-cms-editor-component-image/package.json
@@ -13,9 +13,10 @@
   "sideEffects": false,
   "scripts": {
     "watch": "webpack -w",
-    "build": "webpack"
+    "build": "cross-env NODE_ENV=production webpack"
   },
   "devDependencies": {
+    "cross-env": "^5.2.0",
     "webpack": "^4.16.1",
     "webpack-cli": "^3.1.0"
   },
diff --git a/packages/netlify-cms-lib-auth/package.json b/packages/netlify-cms-lib-auth/package.json
index 019e6702..1886b862 100644
--- a/packages/netlify-cms-lib-auth/package.json
+++ b/packages/netlify-cms-lib-auth/package.json
@@ -14,12 +14,13 @@
   "sideEffects": false,
   "scripts": {
     "watch": "webpack -w",
-    "build": "webpack"
+    "build": "cross-env NODE_ENV=production webpack"
   },
   "dependencies": {
     "uuid": "^3.1.0"
   },
   "devDependencies": {
+    "cross-env": "^5.2.0",
     "webpack": "^4.16.1",
     "webpack-cli": "^3.1.0"
   },
diff --git a/packages/netlify-cms-lib-util/package.json b/packages/netlify-cms-lib-util/package.json
index 222d2376..b4820493 100644
--- a/packages/netlify-cms-lib-util/package.json
+++ b/packages/netlify-cms-lib-util/package.json
@@ -10,12 +10,13 @@
   "sideEffects": false,
   "scripts": {
     "watch": "webpack -w",
-    "build": "webpack"
+    "build": "cross-env NODE_ENV=production webpack"
   },
   "dependencies": {
     "localforage": "^1.4.2"
   },
   "devDependencies": {
+    "cross-env": "^5.2.0",
     "webpack": "^4.16.1",
     "webpack-cli": "^3.1.0"
   },
diff --git a/packages/netlify-cms-ui-default/package.json b/packages/netlify-cms-ui-default/package.json
index a56c4e8c..372e3b9b 100644
--- a/packages/netlify-cms-ui-default/package.json
+++ b/packages/netlify-cms-ui-default/package.json
@@ -10,7 +10,7 @@
   "sideEffects": false,
   "scripts": {
     "watch": "webpack -w",
-    "build": "webpack"
+    "build": "cross-env NODE_ENV=production webpack"
   },
   "dependencies": {
     "react-aria-menubutton": "^5.1.0",
@@ -18,6 +18,7 @@
     "react-transition-group": "^2.2.1"
   },
   "devDependencies": {
+    "cross-env": "^5.2.0",
     "webpack": "^4.16.1",
     "webpack-cli": "^3.1.0"
   },
diff --git a/packages/netlify-cms-widget-boolean/package.json b/packages/netlify-cms-widget-boolean/package.json
index a88bbcbd..e1b599e1 100644
--- a/packages/netlify-cms-widget-boolean/package.json
+++ b/packages/netlify-cms-widget-boolean/package.json
@@ -13,9 +13,10 @@
   "sideEffects": false,
   "scripts": {
     "watch": "webpack -w",
-    "build": "webpack"
+    "build": "cross-env NODE_ENV=production webpack"
   },
   "devDependencies": {
+    "cross-env": "^5.2.0",
     "webpack": "^4.16.1",
     "webpack-cli": "^3.1.0"
   },
diff --git a/packages/netlify-cms-widget-date/package.json b/packages/netlify-cms-widget-date/package.json
index adb1a09d..0046ee01 100644
--- a/packages/netlify-cms-widget-date/package.json
+++ b/packages/netlify-cms-widget-date/package.json
@@ -14,12 +14,13 @@
   "sideEffects": false,
   "scripts": {
     "watch": "webpack -w",
-    "build": "webpack"
+    "build": "cross-env NODE_ENV=production webpack"
   },
   "dependencies": {
     "react-datetime": "^2.11.0"
   },
   "devDependencies": {
+    "cross-env": "^5.2.0",
     "css-loader": "^1.0.0",
     "to-string-loader": "^1.1.5",
     "webpack": "^4.16.1",
diff --git a/packages/netlify-cms-widget-datetime/package.json b/packages/netlify-cms-widget-datetime/package.json
index e603653f..a1bfcf56 100644
--- a/packages/netlify-cms-widget-datetime/package.json
+++ b/packages/netlify-cms-widget-datetime/package.json
@@ -15,12 +15,13 @@
   "sideEffects": false,
   "scripts": {
     "watch": "webpack -w",
-    "build": "webpack"
+    "build": "cross-env NODE_ENV=production webpack"
   },
   "dependencies": {
     "netlify-cms-widget-date": "^2.0.0-alpha.0"
   },
   "devDependencies": {
+    "cross-env": "^5.2.0",
     "webpack": "^4.16.1",
     "webpack-cli": "^3.1.0"
   },
diff --git a/packages/netlify-cms-widget-file/package.json b/packages/netlify-cms-widget-file/package.json
index e3bdd466..20aaf0cc 100644
--- a/packages/netlify-cms-widget-file/package.json
+++ b/packages/netlify-cms-widget-file/package.json
@@ -15,12 +15,13 @@
   "sideEffects": false,
   "scripts": {
     "watch": "webpack -w",
-    "build": "webpack"
+    "build": "cross-env NODE_ENV=production webpack"
   },
   "dependencies": {
     "uuid": "^3.3.2"
   },
   "devDependencies": {
+    "cross-env": "^5.2.0",
     "webpack": "^4.16.1",
     "webpack-cli": "^3.1.0"
   },
diff --git a/packages/netlify-cms-widget-image/package.json b/packages/netlify-cms-widget-image/package.json
index 63442799..47524793 100644
--- a/packages/netlify-cms-widget-image/package.json
+++ b/packages/netlify-cms-widget-image/package.json
@@ -15,12 +15,13 @@
   "sideEffects": false,
   "scripts": {
     "watch": "webpack -w",
-    "build": "webpack"
+    "build": "cross-env NODE_ENV=production webpack"
   },
   "dependencies": {
     "netlify-cms-widget-file": "^2.0.0-alpha.0"
   },
   "devDependencies": {
+    "cross-env": "^5.2.0",
     "webpack": "^4.16.1",
     "webpack-cli": "^3.1.0"
   },
diff --git a/packages/netlify-cms-widget-list/package.json b/packages/netlify-cms-widget-list/package.json
index 39fe7574..7904e4a4 100644
--- a/packages/netlify-cms-widget-list/package.json
+++ b/packages/netlify-cms-widget-list/package.json
@@ -14,13 +14,14 @@
   "sideEffects": false,
   "scripts": {
     "watch": "webpack -w",
-    "build": "webpack"
+    "build": "cross-env NODE_ENV=production webpack"
   },
   "dependencies": {
     "netlify-cms-widget-object": "^2.0.0-alpha.0",
     "react-sortable-hoc": "^0.6.8"
   },
   "devDependencies": {
+    "cross-env": "^5.2.0",
     "webpack": "^4.16.1",
     "webpack-cli": "^3.1.0"
   },
diff --git a/packages/netlify-cms-widget-markdown/package.json b/packages/netlify-cms-widget-markdown/package.json
index 0d9b3f75..4febf2e8 100644
--- a/packages/netlify-cms-widget-markdown/package.json
+++ b/packages/netlify-cms-widget-markdown/package.json
@@ -14,7 +14,7 @@
   "sideEffects": false,
   "scripts": {
     "watch": "webpack -w",
-    "build": "webpack"
+    "build": "cross-env NODE_ENV=production webpack"
   },
   "dependencies": {
     "is-hotkey": "^0.1.1",
@@ -37,6 +37,7 @@
     "unist-util-visit-parents": "^1.1.1"
   },
   "devDependencies": {
+    "cross-env": "^5.2.0",
     "webpack": "^4.16.1",
     "webpack-cli": "^3.1.0"
   },
diff --git a/packages/netlify-cms-widget-number/package.json b/packages/netlify-cms-widget-number/package.json
index a1e075bd..b81957d2 100644
--- a/packages/netlify-cms-widget-number/package.json
+++ b/packages/netlify-cms-widget-number/package.json
@@ -13,9 +13,10 @@
   "sideEffects": false,
   "scripts": {
     "watch": "webpack -w",
-    "build": "webpack"
+    "build": "cross-env NODE_ENV=production webpack"
   },
   "devDependencies": {
+    "cross-env": "^5.2.0",
     "webpack": "^4.16.1",
     "webpack-cli": "^3.1.0"
   },
diff --git a/packages/netlify-cms-widget-object/package.json b/packages/netlify-cms-widget-object/package.json
index 50b5b203..becd5d64 100644
--- a/packages/netlify-cms-widget-object/package.json
+++ b/packages/netlify-cms-widget-object/package.json
@@ -15,9 +15,10 @@
   "sideEffects": false,
   "scripts": {
     "watch": "webpack -w",
-    "build": "webpack"
+    "build": "cross-env NODE_ENV=production webpack"
   },
   "devDependencies": {
+    "cross-env": "^5.2.0",
     "webpack": "^4.16.1",
     "webpack-cli": "^3.1.0"
   },
diff --git a/packages/netlify-cms-widget-relation/package.json b/packages/netlify-cms-widget-relation/package.json
index 4ca9813d..f94b0f4f 100644
--- a/packages/netlify-cms-widget-relation/package.json
+++ b/packages/netlify-cms-widget-relation/package.json
@@ -14,12 +14,13 @@
   "sideEffects": false,
   "scripts": {
     "watch": "webpack -w",
-    "build": "webpack"
+    "build": "cross-env NODE_ENV=production webpack"
   },
   "dependencies": {
     "react-autosuggest": "^9.3.2"
   },
   "devDependencies": {
+    "cross-env": "^5.2.0",
     "webpack": "^4.16.1",
     "webpack-cli": "^3.1.0"
   },
diff --git a/packages/netlify-cms-widget-select/package.json b/packages/netlify-cms-widget-select/package.json
index 7b8debc1..4017a855 100644
--- a/packages/netlify-cms-widget-select/package.json
+++ b/packages/netlify-cms-widget-select/package.json
@@ -15,9 +15,10 @@
   "sideEffects": false,
   "scripts": {
     "watch": "webpack -w",
-    "build": "webpack"
+    "build": "cross-env NODE_ENV=production webpack"
   },
   "devDependencies": {
+    "cross-env": "^5.2.0",
     "webpack": "^4.16.1",
     "webpack-cli": "^3.1.0"
   },
diff --git a/packages/netlify-cms-widget-string/package.json b/packages/netlify-cms-widget-string/package.json
index c155d093..1394d3a3 100644
--- a/packages/netlify-cms-widget-string/package.json
+++ b/packages/netlify-cms-widget-string/package.json
@@ -13,9 +13,10 @@
   "sideEffects": false,
   "scripts": {
     "watch": "webpack -w",
-    "build": "webpack"
+    "build": "cross-env NODE_ENV=production webpack"
   },
   "devDependencies": {
+    "cross-env": "^5.2.0",
     "webpack": "^4.16.1",
     "webpack-cli": "^3.1.0"
   },
diff --git a/packages/netlify-cms-widget-text/package.json b/packages/netlify-cms-widget-text/package.json
index ad69352c..9ec8dcff 100644
--- a/packages/netlify-cms-widget-text/package.json
+++ b/packages/netlify-cms-widget-text/package.json
@@ -16,12 +16,13 @@
   "sideEffects": false,
   "scripts": {
     "watch": "webpack -w",
-    "build": "webpack"
+    "build": "cross-env NODE_ENV=production webpack"
   },
   "dependencies": {
     "react-textarea-autosize": "^5.2.0"
   },
   "devDependencies": {
+    "cross-env": "^5.2.0",
     "webpack": "^4.16.1",
     "webpack-cli": "^3.1.0"
   },
diff --git a/packages/netlify-cms/package.json b/packages/netlify-cms/package.json
index 67cee4f8..6f19756b 100644
--- a/packages/netlify-cms/package.json
+++ b/packages/netlify-cms/package.json
@@ -4,7 +4,7 @@
   "version": "2.0.0-alpha.0",
   "main": "dist/netlify-cms.js",
   "scripts": {
-    "build": "webpack"
+    "build": "cross-env NODE_ENV=production webpack"
   },
   "keywords": [
     "netlify",
@@ -38,6 +38,7 @@
     "netlify-cms-widget-text": "2.0.0-alpha.0"
   },
   "devDependencies": {
+    "cross-env": "^5.2.0",
     "webpack": "^4.16.1",
     "webpack-cli": "^3.1.0"
   }
diff --git a/packages/netlify-cms/src/backends.js b/packages/netlify-cms/src/backends.js
index 687bd53e..22dce21d 100644
--- a/packages/netlify-cms/src/backends.js
+++ b/packages/netlify-cms/src/backends.js
@@ -4,7 +4,6 @@ import { GitLabBackend } from 'netlify-cms-backend-gitlab/src';
 import { GitGatewayBackend } from 'netlify-cms-backend-git-gateway/src';
 import { TestBackend } from 'netlify-cms-backend-test/src';
 
-console.log(cms);
 const { registerBackend } = cms;
 
 registerBackend('git-gateway', GitGatewayBackend);
diff --git a/scripts/webpack.js b/scripts/webpack.js
index 234f147e..4f9858da 100644
--- a/scripts/webpack.js
+++ b/scripts/webpack.js
@@ -25,7 +25,12 @@ const rules = () => ({
 
 const plugins = () => {
   return {
-    friendlyErrors: () => new FriendlyErrorsWebpackPlugin()
+    define: () => new webpack.DefinePlugin({
+      NETLIFY_CMS_VERSION: `${pkg.version}${isProduction ? '' : '-dev'}`,
+    }),
+    ignoreEsprima: () => new webpack.IgnorePlugin(/^esprima$/, /js-yaml/),
+    ignoreMomentOptionalDeps: () => new webpack.IgnorePlugin(/^\.\/locale$/, /moment$/),
+    friendlyErrors: () => new FriendlyErrorsWebpackPlugin(),
   };
 };
 
diff --git a/src/backends/bitbucket/API.js b/src/backends/bitbucket/API.js
deleted file mode 100644
index b1c3e9ef..00000000
--- a/src/backends/bitbucket/API.js
+++ /dev/null
@@ -1,150 +0,0 @@
-import { flow } from "lodash";
-import LocalForage from "Lib/LocalForage";
-import unsentRequest from "Lib/unsentRequest";
-import { responseParser } from "Lib/backendHelper";
-import { then } from "Lib/promiseHelper";
-import { basename } from "Lib/pathHelper";
-import AssetProxy from "ValueObjects/AssetProxy";
-import Cursor from "ValueObjects/Cursor";
-import { APIError } from "ValueObjects/errors";
-
-export default class API {
-  constructor(config) {
-    this.api_root = config.api_root || "https://api.bitbucket.org/2.0";
-    this.branch = config.branch || "master";
-    this.repo = config.repo || "";
-    this.requestFunction = config.requestFunction || unsentRequest.performRequest;
-    // Allow overriding this.hasWriteAccess
-    this.hasWriteAccess = config.hasWriteAccess || this.hasWriteAccess;
-    this.repoURL = this.repo ? `/repositories/${ this.repo }` : "";
-  }
-
-  buildRequest = req => flow([
-    unsentRequest.withRoot(this.api_root),
-    unsentRequest.withTimestamp,
-  ])(req);
-
-  request = req => flow([
-    this.buildRequest,
-    this.requestFunction,
-    p => p.catch(err => Promise.reject(new APIError(err.message, null, "BitBucket"))),
-  ])(req);
-
-  requestJSON = req => flow([
-    unsentRequest.withDefaultHeaders({ "Content-Type": "application/json" }),
-    this.request,
-    then(responseParser({ format: "json" })),
-    p => p.catch(err => Promise.reject(new APIError(err.message, null, "BitBucket"))),
-  ])(req);
-  requestText = req => flow([
-    unsentRequest.withDefaultHeaders({ "Content-Type": "text/plain" }),
-    this.request,
-    then(responseParser({ format: "text" })),
-    p => p.catch(err => Promise.reject(new APIError(err.message, null, "BitBucket"))),
-  ])(req);
-
-  user = () => this.request("/user");
-  hasWriteAccess = user => this.request(this.repoURL).then(res => res.ok);
-
-  isFile = ({ type }) => type === "commit_file";
-  processFile = file => ({
-    ...file,
-    name: basename(file.path),
-    download_url: file.links.self.href,
-
-    // BitBucket does not return file SHAs, but it does give us the
-    // commit SHA. Since the commit SHA will change if any files do,
-    // we can construct an ID using the commit SHA and the file path
-    // that will help with caching (though not as well as a normal
-    // SHA, since it will change even if the individual file itself
-    // doesn't.)
-    ...(file.commit && file.commit.hash
-        ? { id: `${ file.commit.hash }/${ file.path }` }
-        : {}),
-  });
-  processFiles = files => files.filter(this.isFile).map(this.processFile);
-
-  readFile = async (path, sha, { ref = this.branch, parseText = true } = {}) => {
-    const cacheKey = parseText ? `bb.${ sha }` : `bb.${ sha }.blob`;
-    const cachedFile = sha ? await LocalForage.getItem(cacheKey) : null;
-    if (cachedFile) { return cachedFile; }
-    const result = await this.request({
-      url: `${ this.repoURL }/src/${ ref }/${ path }`,
-      cache: "no-store",
-    }).then(parseText ? responseParser({ format: "text" }) : responseParser({ format: "blob" }));
-    if (sha) { LocalForage.setItem(cacheKey, result); }
-    return result;
-  }
-
-  getEntriesAndCursor = jsonResponse => {
-    const { size: count, page: index, pagelen: pageSize, next, previous: prev, values: entries } = jsonResponse;
-    const pageCount = (pageSize && count) ? Math.ceil(count / pageSize) : undefined;
-    return {
-      entries,
-      cursor: Cursor.create({
-        actions: [...(next ? ["next"] : []), ...(prev ? ["prev"] : [])],
-        meta: { index, count, pageSize, pageCount },
-        data: { links: { next, prev } },
-      }),
-    };
-  }
-
-  listFiles = async path => {
-    const { entries, cursor } = await flow([
-      // sort files by filename ascending
-      unsentRequest.withParams({ sort: "-path" }),
-      this.requestJSON,
-      then(this.getEntriesAndCursor),
-    ])(`${ this.repoURL }/src/${ this.branch }/${ path }`);
-    return { entries: this.processFiles(entries), cursor };
-  }
-
-  traverseCursor = async (cursor, action) => flow([
-    this.requestJSON,
-    then(this.getEntriesAndCursor),
-    then(({ cursor: newCursor, entries }) => ({ cursor: newCursor, entries: this.processFiles(entries) })),
-  ])(cursor.data.getIn(["links", action]));
-
-  listAllFiles = async path => {
-    const { cursor: initialCursor, entries: initialEntries } = await this.listFiles(path);
-    const entries = [...initialEntries];
-    let currentCursor = initialCursor;
-    while (currentCursor && currentCursor.actions.has("next")) {
-      const { cursor: newCursor, entries: newEntries } = await this.traverseCursor(currentCursor, "next");
-      entries.push(...newEntries);
-      currentCursor = newCursor;
-    }
-    return this.processFiles(entries);
-  };
-
-  uploadBlob = async item => {
-    const contentBase64 = await (item instanceof AssetProxy ? item.toBase64() : Promise.resolve(item.raw));
-    const formData = new FormData();
-    formData.append(item.path, contentBase64);
-
-    return flow([
-      unsentRequest.withMethod("POST"),
-      unsentRequest.withBody(formData),
-      this.request,
-      then(() => ({ ...item, uploaded: true })),
-    ])(`${ this.repoURL }/src`);
-  };
-
-  persistFiles = (files, { commitMessage, newEntry }) => Promise.all(
-    files.filter(({ uploaded }) => !uploaded).map(this.uploadBlob)
-  );
-
-  deleteFile = (path, message, options={}) => {
-    const branch = options.branch || this.branch;
-    const body = new FormData();
-    body.append('files', path);
-    if (message && message !== "") {
-      body.append("message", message);
-    }
-    return flow([
-      unsentRequest.withMethod("POST"),
-      unsentRequest.withBody(body),
-      this.request,
-    ])(`${ this.repoURL }/src`);
-  };
-}
diff --git a/src/backends/bitbucket/AuthenticationPage.js b/src/backends/bitbucket/AuthenticationPage.js
deleted file mode 100644
index bce564a4..00000000
--- a/src/backends/bitbucket/AuthenticationPage.js
+++ /dev/null
@@ -1,50 +0,0 @@
-import React from 'react';
-import PropTypes from 'prop-types';
-import Authenticator from 'Lib/netlify-auth';
-import { Icon } from 'UI';
-
-export default class AuthenticationPage extends React.Component {
-  static propTypes = {
-    onLogin: PropTypes.func.isRequired,
-    inProgress: PropTypes.bool,
-  };
-
-  state = {};
-
-  handleLogin = (e) => {
-    e.preventDefault();
-    const cfg = {
-      base_url: this.props.base_url,
-      site_id: (document.location.host.split(':')[0] === 'localhost') ? 'cms.netlify.com' : this.props.site_id,
-      auth_endpoint: this.props.authEndpoint,
-    };
-    const auth = new Authenticator(cfg);
-
-    auth.authenticate({ provider: 'bitbucket', scope: 'repo' }, (err, data) => {
-      if (err) {
-        this.setState({ loginError: err.toString() });
-        return;
-      }
-      this.props.onLogin(data);
-    });
-  };
-
-  render() {
-    const { loginError } = this.state;
-    const { inProgress } = this.props;
-
-    return (
-      <section className="nc-githubAuthenticationPage-root">
-        <Icon className="nc-githubAuthenticationPage-logo" size="500px" type="netlify-cms"/>
-        {loginError && <p>{loginError}</p>}
-        <button
-          className="nc-githubAuthenticationPage-button"
-          disabled={inProgress}
-          onClick={this.handleLogin}
-        >
-          <Icon type="bitbucket" /> {inProgress ? "Logging in..." : "Login with Bitbucket"}
-        </button>
-      </section>
-    );
-  }
-}
diff --git a/src/backends/bitbucket/implementation.js b/src/backends/bitbucket/implementation.js
deleted file mode 100644
index 6933dbab..00000000
--- a/src/backends/bitbucket/implementation.js
+++ /dev/null
@@ -1,222 +0,0 @@
-import semaphore from "semaphore";
-import { flow, trimStart } from "lodash";
-import { EDITORIAL_WORKFLOW } from "Constants/publishModes";
-import { CURSOR_COMPATIBILITY_SYMBOL } from "ValueObjects/Cursor";
-import { filterByPropExtension } from "Lib/backendHelper";
-import { resolvePromiseProperties, then } from "Lib/promiseHelper";
-import unsentRequest from "Lib/unsentRequest";
-import AuthenticationPage from "./AuthenticationPage";
-import Authenticator from 'Lib/netlify-auth';
-import API from "./API";
-
-const MAX_CONCURRENT_DOWNLOADS = 10;
-
-// Implementation wrapper class
-export default class Bitbucket {
-  constructor(config, options={}) {
-    this.config = config;
-    this.options = {
-      proxied: false,
-      API: null,
-      updateUserCredentials: async () => null,
-      ...options,
-    };
-
-    if (config.getIn(["publish_mode"]) === EDITORIAL_WORKFLOW) {
-      throw new Error("The BitBucket backend does not support the Editorial Workflow.");
-    }
-
-    if (!this.options.proxied && !config.getIn(["backend", "repo"], false)) {
-      throw new Error("The BitBucket backend needs a \"repo\ in the backend configuration.");
-    }
-
-    this.api = this.options.API || null;
-
-    this.updateUserCredentials = this.options.updateUserCredentials;
-
-    this.repo = config.getIn(["backend", "repo"], "");
-    this.branch = config.getIn(["backend", "branch"], "master");
-    this.api_root = config.getIn(["backend", "api_root"], "https://api.bitbucket.org/2.0");
-    this.base_url = config.get("base_url");
-    this.site_id = config.get("site_id");
-    this.token = "";
-  }
-
-  authComponent() {
-    return AuthenticationPage;
-  }
-
-  setUser(user) {
-    this.token = user.token;
-    this.api = new API({ requestFunction: this.apiRequestFunction, branch: this.branch, repo: this.repo });
-  }
-
-  restoreUser(user) {
-    return this.authenticate(user);
-  }
-
-  authenticate(state) {
-    this.token = state.token;
-    this.refreshToken = state.refresh_token;
-    this.api = new API({ requestFunction: this.apiRequestFunction, branch: this.branch, repo: this.repo, api_root: this.api_root });
-
-    return this.api.user().then(user =>
-      this.api.hasWriteAccess(user).then(isCollab => {
-        if (!isCollab) throw new Error("Your BitBucker user account does not have access to this repo.");
-        return Object.assign({}, user, { token: state.token, refresh_token: state.refresh_token });
-      })
-    );
-  }
-
-  getRefreshedAccessToken() {
-    if (this.refreshedTokenPromise) {
-      return this.refreshedTokenPromise;
-    }
-
-    // instantiating a new Authenticator on each refresh isn't ideal,
-    if (!this.auth) {
-      const cfg = {
-        base_url: this.base_url,
-        site_id: this.site_id,
-      };
-      this.authenticator = new Authenticator(cfg);
-    }
-
-    this.refreshedTokenPromise = this.authenticator.refresh({ provider: "bitbucket", refresh_token: this.refreshToken })
-      .then(({ token, refresh_token }) => {
-        this.token = token;
-        this.refreshToken = refresh_token;
-        this.refreshedTokenPromise = undefined;
-        this.updateUserCredentials({ token, refresh_token });
-        return token;
-      });
-
-    return this.refreshedTokenPromise;
-  }
-
-  logout() {
-    this.token = null;
-    return;
-  }
-
-  getToken() {
-    if (this.refreshedTokenPromise) {
-      return this.refreshedTokenPromise;
-    }
-
-    return Promise.resolve(this.token);
-  }
-
-  apiRequestFunction = async req => {
-    const token = this.refreshedTokenPromise ? await this.refreshedTokenPromise : this.token;
-    return flow([
-      unsentRequest.withHeaders({ Authorization: `Bearer ${ token }` }),
-      unsentRequest.performRequest,
-      then(async res => {
-        if (res.status === 401) {
-          const json = (await res.json().catch(() => null));
-          if (json && json.type === "error" && /^access token expired/i.test(json.error.message)) {
-            const newToken = await this.getRefreshedAccessToken();
-            const reqWithNewToken = unsentRequest.withHeaders({ Authorization: `Bearer ${ newToken }` }, req);
-            return unsentRequest.performRequest(reqWithNewToken);
-          }
-        }
-        return res;
-      }),
-    ])(req);
-  };
-
-  entriesByFolder(collection, extension) {
-    const listPromise = this.api.listFiles(collection.get("folder"));
-    return resolvePromiseProperties({
-      files: listPromise
-        .then(({ entries }) => entries)
-        .then(filterByPropExtension(extension, "path"))
-        .then(this.fetchFiles),
-      cursor: listPromise.then(({ cursor }) => cursor),
-    }).then(({ files, cursor }) => {
-      files[CURSOR_COMPATIBILITY_SYMBOL] = cursor;
-      return files;
-    });
-  }
-
-  allEntriesByFolder(collection, extension) {
-    return this.api.listAllFiles(collection.get("folder"))
-      .then(filterByPropExtension(extension, "path"))
-      .then(this.fetchFiles);
-  }
-
-  entriesByFiles(collection) {
-    const files = collection.get("files").map(collectionFile => ({
-      path: collectionFile.get("file"),
-      label: collectionFile.get("label"),
-    }));
-    return this.fetchFiles(files);
-  }
-
-  fetchFiles = (files) => {
-    const sem = semaphore(MAX_CONCURRENT_DOWNLOADS);
-    const promises = [];
-    files.forEach((file) => {
-      promises.push(new Promise((resolve, reject) => (
-        sem.take(() => this.api.readFile(file.path, file.id).then((data) => {
-          resolve({ file, data });
-          sem.leave();
-        }).catch((error = true) => {
-          sem.leave();
-          console.error(`failed to load file from BitBucket: ${ file.path }`);
-          resolve({ error });
-        }))
-      )));
-    });
-    return Promise.all(promises)
-      .then(loadedEntries => loadedEntries.filter(loadedEntry => !loadedEntry.error));
-  }
-
-  getEntry(collection, slug, path) {
-    return this.api.readFile(path).then(data => ({
-      file: { path },
-      data,
-    }));
-  }
-
-  getMedia() {
-    const sem = semaphore(MAX_CONCURRENT_DOWNLOADS);
-
-    return this.api.listAllFiles(this.config.get("media_folder"))
-      .then(files => files.map(({ id, name, download_url, path }) => {
-        const getBlobPromise = () => new Promise((resolve, reject) =>
-          sem.take(() =>
-            this.api.readFile(path, id, { parseText: false })
-              .then(resolve, reject)
-              .finally(() => sem.leave())
-          )
-        );
-
-        return { id, name, getBlobPromise, url: download_url, path };
-      }));
-  }
-
-  persistEntry(entry, mediaFiles, options = {}) {
-    return this.api.persistFiles([entry], options);
-  }
-
-  async persistMedia(mediaFile, options = {}) {
-    await this.api.persistFiles([mediaFile], options);
-    const { value, path, fileObj } = mediaFile;
-    const getBlobPromise = () => Promise.resolve(fileObj);
-    return { name: value, size: fileObj.size, getBlobPromise, path: trimStart(path, '/k') };
-  }
-
-  deleteFile(path, commitMessage, options) {
-    return this.api.deleteFile(path, commitMessage, options);
-  }
-
-  traverseCursor(cursor, action) {
-    return this.api.traverseCursor(cursor, action)
-      .then(async ({ entries, cursor: newCursor }) => ({
-        entries: await Promise.all(entries.map(file => this.api.readFile(file.path, file.id).then(data => ({ file, data })))),
-        cursor: newCursor,
-      }));
-  }
-}