Patch for jest-chain which fixes several outstanding issues including Promise support and error propagation

jest-chain+1.1.5.patch

diff --git a/node_modules/jest-chain/dist/chain.js b/node_modules/jest-chain/dist/chain.js
index 4a7b85b..cf756ba 100644
--- a/node_modules/jest-chain/dist/chain.js
+++ b/node_modules/jest-chain/dist/chain.js
@@ -17,18 +17,20 @@ class JestAssertionError extends Error {
 
 }
 
-const chainMatchers = (matchers, originalMatchers = matchers) => {
+const chainMatchers = (matchers, originalMatchers = matchers, value = undefined) => {
   const mappedMatchers = Object.keys(matchers).map(name => {
     const matcher = matchers[name];
 
     if (typeof matcher === 'function') {
       const newMatcher = (...args) => {
         try {
-          matcher(...args); // run matcher
-
-          return chainMatchers(originalMatchers); // chain the original matchers again
+          return chainMatchers(originalMatchers, originalMatchers, matcher(...args)); // chain the original matchers again
         } catch (error) {
-          throw new JestAssertionError(error.matcherResult, newMatcher);
+          if (error.matcherResult) {
+            throw new JestAssertionError(error.matcherResult, newMatcher);
+          }
+
+          throw error;
         }
       };
 
@@ -42,7 +44,7 @@ const chainMatchers = (matchers, originalMatchers = matchers) => {
 
     };
   });
-  return Object.assign({}, ...mappedMatchers);
+  return Object.assign(Promise.resolve(value), ...mappedMatchers);
 };
 
 var _default = expect => {
diff --git a/node_modules/jest-chain/types/index.d.ts b/node_modules/jest-chain/types/index.d.ts
index a952678..4ff766e 100644
--- a/node_modules/jest-chain/types/index.d.ts
+++ b/node_modules/jest-chain/types/index.d.ts
@@ -4,7 +4,7 @@ declare namespace jest {
   interface ChainedMatchers<T>
     extends jest.JestMatchersShape<
       Matchers<ChainedMatchers<T>, T>,
-      Matchers<Promise<ChainedMatchers<T>>, T>
+      Matchers<Promise<ChainedMatchers<T>> & ChainedMatchers<T>, T>
     > {}
 
   interface Expect {

Patch for jest-chain which fixes several outstanding issues including Promise support and error propagation

$ git apply -p2 --directory="node_modules" --unsafe-paths "jest-chain+1.1.5.patch"