diff --git a/index.js b/index.js
index 79752754..649b2219 100644
--- a/index.js
+++ b/index.js
@@ -7,3 +7,18 @@
  */
 
 module.exports = require('./src/core');
+module.exports.run = require('./src/core').run;
+module.exports.transform = require('./src/core').transform;
+module.exports.defineFixture = require('./src/core').defineFixture;
+module.exports.registerConfig = require('./src/core').registerConfig;
+module.exports.printResults = require('./src/core').printResults;
+module.exports.parseArgs = require('./src/core').parseArgs;
+module.exports.createExtension = require('./src/core').createExtension;
+module.exports.builtinDecorators = require('./src/core').builtinDecorators;
+module.exports.builtinTransforms = require('./src/core').builtinTransforms;
+module.exports.builtinParsers = require('./src/core').builtinParsers;
+module.exports.ParsingSourceError = require('./src/core').ParsingSourceError;
+module.exports.InvalidSourceError = require('./src/core').InvalidSourceError;
+module.exports.SyntaxError = require('./src/core').SyntaxError;
+module.exports.Suite = require('./src/core').Suite;
+module.exports.Test = require('./src/core').Test;
diff --git a/src/core.js b/src/core.js
index 9f51a69d..6fe45836 100644
--- a/src/core.js
+++ b/src/core.js
@@ -180,4 +180,6 @@ function enrichCore(core, parser) {
   return core;
 }
 
-module.exports = enrichCore(core, getParser());
+const enrichedCore = enrichCore(core, getParser());
+enrichedCore.registerMethods = Collection.registerMethods;
+module.exports = enrichedCore;