diff --git a/packages/workbox-precaching/src/lib/controllers/base-cache-manager.js b/packages/workbox-precaching/src/lib/controllers/base-cache-manager.js
index 13520224c..5b80bc797 100644
--- a/packages/workbox-precaching/src/lib/controllers/base-cache-manager.js
+++ b/packages/workbox-precaching/src/lib/controllers/base-cache-manager.js
@@ -280,7 +280,7 @@ class BaseCacheManager {
    * @return {Promise} Returns a Promise that resolves once the work is done.
    */
   _onEntryDeleted(url) {
-    throw ErrorFactory.createError('should-override');
+    throw new WorkboxError('requires-overriding');
   }
 }
 
diff --git a/packages/workbox-sw/src/lib/error-factory.js b/packages/workbox-sw/src/lib/error-factory.js
index c1b6dc91c..3ae179bdf 100644
--- a/packages/workbox-sw/src/lib/error-factory.js
+++ b/packages/workbox-sw/src/lib/error-factory.js
@@ -17,8 +17,8 @@ import ErrorFactory from '../../../../lib/error-factory';
 
 const errors = {
   'not-in-sw': 'workbox-sw must be loaded in your service worker file.',
-  'unsupported-route-type': 'Routes must be either a express style route ' +
-    'string, a Regex to capture request URLs or a Route instance.',
+  'unsupported-route-type': 'The first parameter to registerRoute() should be' +
+    ' either an Express-style path string, a RegExp, or a function.',
   'empty-express-string': 'The Express style route string must have some ' +
     'characters, an empty string is invalid.',
   'bad-revisioned-cache-list': `The 'precache()' method expects` +
diff --git a/packages/workbox-sw/src/lib/router.js b/packages/workbox-sw/src/lib/router.js
index 1f30671cf..b5ecd6836 100644
--- a/packages/workbox-sw/src/lib/router.js
+++ b/packages/workbox-sw/src/lib/router.js
@@ -70,22 +70,26 @@ class Router extends SWRoutingRouter {
   }
 
   /**
-   * @param {String|RegExp|Route} capture The capture for a route can be one
-   * of three types.
-   * 1. It can be an Express style route, like `'/path/to/:anything'` for
+   * @param {String|RegExp|module:workbox-routing.matchCallback} capture
+   * The capture for a route can be one of three types:
+   * 1. An Express-style route, like `'/path/to/:anything'` for
    *    same-origin or `'https://cross-origin.com/path/to/:anything'` for
    *    cross-origin routes.
    * 1. A regular expression that will be tested against request URLs. For
    *    cross-origin routes, you must use a RegExp that matches the start of the
    *    full URL, like `new RegExp('https://cross-origin\.com/')`.
-   * 1. A [Route]{@link module:workbox-routing.Route} instance.
+   * 1. A [function]{@link module:workbox-routing.matchCallback} which is
+   *    passed the URL and `FetchEvent`, and should returns a truthy value if
+   *    the route matches.
    * @param {function|module:workbox-runtime-caching.Handler} handler The
    * handler to use to provide a response if the route matches. The handler
    * argument is ignored if you pass in a Route object, otherwise it's required.
+   * @param {String} [method] Only match requests that use this HTTP method.
+   + Defaults to `'GET'`.
    * @return {module:workbox-routing.Route} The Route object that was
    * registered.
    */
-  registerRoute(capture, handler) {
+  registerRoute(capture, handler, method = 'GET') {
     if (typeof handler === 'function') {
       handler = {
         handle: handler,
@@ -97,11 +101,11 @@ class Router extends SWRoutingRouter {
       if (capture.length === 0) {
         throw ErrorFactory.createError('empty-express-string');
       }
-      route = new ExpressRoute({path: capture, handler});
+      route = new ExpressRoute({path: capture, handler, method});
     } else if (capture instanceof RegExp) {
-      route = new RegExpRoute({regExp: capture, handler});
-    } else if (capture instanceof Route) {
-      route = capture;
+      route = new RegExpRoute({regExp: capture, handler, method});
+    } else if (typeof capture === 'function') {
+      route = new Route({match: capture, handler, method});
     } else {
       throw ErrorFactory.createError('unsupported-route-type');
     }
diff --git a/packages/workbox-sw/src/lib/workbox-sw.js b/packages/workbox-sw/src/lib/workbox-sw.js
index 61081ad12..a655b772f 100644
--- a/packages/workbox-sw/src/lib/workbox-sw.js
+++ b/packages/workbox-sw/src/lib/workbox-sw.js
@@ -24,7 +24,6 @@ import logHelper from '../../../../lib/log-helper';
 import {BroadcastCacheUpdatePlugin} from
   '../../../workbox-broadcast-cache-update/src/index.js';
 import {RevisionedCacheManager} from '../../../workbox-precaching/src/index.js';
-import {Route} from '../../../workbox-routing/src/index.js';
 import {
   getDefaultCacheName} from '../../../workbox-runtime-caching/src/index.js';
 
@@ -303,29 +302,27 @@ class WorkboxSW {
       plugins,
     });
 
-    const route = new Route({
-      match: ({url}) => {
-        const cachedUrls = this._revisionedCacheManager.getCachedUrls();
-        if (cachedUrls.indexOf(url.href) !== -1) {
-          return true;
-        }
+    const capture = ({url}) => {
+      const cachedUrls = this._revisionedCacheManager.getCachedUrls();
+      if (cachedUrls.indexOf(url.href) !== -1) {
+        return true;
+      }
 
-        let strippedUrl =
-          this._removeIgnoreUrlParams(url.href, ignoreUrlParametersMatching);
-        if (cachedUrls.indexOf(strippedUrl.href) !== -1) {
-          return true;
-        }
+      let strippedUrl =
+        this._removeIgnoreUrlParams(url.href, ignoreUrlParametersMatching);
+      if (cachedUrls.indexOf(strippedUrl.href) !== -1) {
+        return true;
+      }
 
-        if (directoryIndex && strippedUrl.pathname.endsWith('/')) {
-          url.pathname += directoryIndex;
-          return cachedUrls.indexOf(url.href) !== -1;
-        }
+      if (directoryIndex && strippedUrl.pathname.endsWith('/')) {
+        url.pathname += directoryIndex;
+        return cachedUrls.indexOf(url.href) !== -1;
+      }
 
-        return false;
-      },
-      handler: cacheFirstHandler,
-    });
-    this.router.registerRoute(route);
+      return false;
+    };
+
+    this.router.registerRoute(capture, cacheFirstHandler);
   }
 
   /**
diff --git a/packages/workbox-sw/test/sw/router.js b/packages/workbox-sw/test/sw/router.js
index d4750b3f2..d598417ae 100644
--- a/packages/workbox-sw/test/sw/router.js
+++ b/packages/workbox-sw/test/sw/router.js
@@ -119,4 +119,28 @@ describe('Test workboxSW.router', function() {
     expect(thrownError).to.exist;
     expect(thrownError.name).to.equal('navigation-route-url-string');
   });
+
+  it(`should throw when the method passed in to registerRoute() isn't valid`, function() {
+    const workboxSW = new WorkboxSW();
+    try {
+      workboxSW.router.registerRoute(/123/, () => {}, 'INVALID_METHOD');
+      throw new Error();
+    } catch(error) {
+      expect(error.name).to.eql('assertion-failed',
+        `The expected assertion-failed error wasn't thrown.`);
+    }
+  });
+
+  it(`should use the valid method passed in to registerRoute()`, function() {
+    const workboxSW = new WorkboxSW();
+    const method = 'POST';
+    const route = workboxSW.router.registerRoute(/123/, () => {}, method);
+    expect(route.method).to.eql(method);
+  });
+
+  it(`should support calling registerRoute() with a function as the capture parameter`, function() {
+    const workboxSW = new WorkboxSW();
+    const route = workboxSW.router.registerRoute(() => {}, () => {});
+    expect(route).to.exist;
+  });
 });