diff --git a/packages/offix-offline/jest.config.js b/packages/offix-offline/jest.config.js
new file mode 100644
index 000000000..c453abf34
--- /dev/null
+++ b/packages/offix-offline/jest.config.js
@@ -0,0 +1,191 @@
+// For a detailed explanation regarding each configuration property, visit:
+// https://jestjs.io/docs/en/configuration.html
+
+module.exports = {
+  // All imported modules in your tests should be mocked automatically
+  // automock: false,
+
+  // Stop running tests after `n` failures
+  // bail: 0,
+
+  // Respect "browser" field in package.json when resolving modules
+  // browser: false,
+
+  // The directory where Jest should store its cached dependency information
+  // cacheDirectory: "/private/var/folders/c8/74v_fpqj761ccp_mq0s4hs8h0000gn/T/jest_dx",
+
+  // Automatically clear mock calls and instances between every test
+  clearMocks: true,
+
+  // Indicates whether the coverage information should be collected while executing the test
+  // collectCoverage: false,
+
+  // An array of glob patterns indicating a set of files for which coverage information should be collected
+  // collectCoverageFrom: null,
+
+  // The directory where Jest should output its coverage files
+  coverageDirectory: "coverage",
+
+  // An array of regexp pattern strings used to skip coverage collection
+  // coveragePathIgnorePatterns: [
+  //   "/node_modules/"
+  // ],
+
+  // A list of reporter names that Jest uses when writing coverage reports
+  // coverageReporters: [
+  //   "json",
+  //   "text",
+  //   "lcov",
+  //   "clover"
+  // ],
+
+  // An object that configures minimum threshold enforcement for coverage results
+  // coverageThreshold: null,
+
+  // A path to a custom dependency extractor
+  // dependencyExtractor: null,
+
+  // Make calling deprecated APIs throw helpful error messages
+  // errorOnDeprecated: false,
+
+  // Force coverage collection from ignored files using an array of glob patterns
+  // forceCoverageMatch: [],
+
+  // A path to a module which exports an async function that is triggered once before all test suites
+  // globalSetup: null,
+
+  // A path to a module which exports an async function that is triggered once after all test suites
+  // globalTeardown: null,
+
+  // A set of global variables that need to be available in all test environments
+  // globals: {},
+
+  // The maximum amount of workers used to run your tests. Can be specified as % or a number. E.g. maxWorkers: 10% will use 10% of your CPU amount + 1 as the maximum worker number. maxWorkers: 2 will use a maximum of 2 workers.
+  // maxWorkers: "50%",
+
+  // An array of directory names to be searched recursively up from the requiring module's location
+  // moduleDirectories: [
+  //   "node_modules"
+  // ],
+
+  // An array of file extensions your modules use
+  moduleFileExtensions: [
+    "ts",
+    "js",
+    "json",
+    "jsx",
+    "tsx",
+    "node"
+  ],
+
+  // A map from regular expressions to module names that allow to stub out resources with a single module
+  // moduleNameMapper: {},
+
+  // An array of regexp pattern strings, matched against all module paths before considered 'visible' to the module loader
+  // modulePathIgnorePatterns: [],
+
+  // Activates notifications for test results
+  // notify: false,
+
+  // An enum that specifies notification mode. Requires { notify: true }
+  // notifyMode: "failure-change",
+
+  // A preset that is used as a base for Jest's configuration
+  // preset: null,
+
+  // Run tests from one or more projects
+  // projects: null,
+
+  // Use this configuration option to add custom reporters to Jest
+  // reporters: undefined,
+
+  // Automatically reset mock state between every test
+  // resetMocks: false,
+
+  // Reset the module registry before running each individual test
+  // resetModules: false,
+
+  // A path to a custom resolver
+  // resolver: null,
+
+  // Automatically restore mock state between every test
+  // restoreMocks: false,
+
+  // The root directory that Jest should scan for tests and modules within
+  // rootDir: null,
+
+  // A list of paths to directories that Jest should use to search for files in
+  // roots: [
+  //   "<rootDir>"
+  // ],
+
+  // Allows you to use a custom runner instead of Jest's default test runner
+  // runner: "jest-runner",
+
+  // The paths to modules that run some code to configure or set up the testing environment before each test
+  // setupFiles: [],
+
+  // A list of paths to modules that run some code to configure or set up the testing framework before each test
+  // setupFilesAfterEnv: [],
+
+  // A list of paths to snapshot serializer modules Jest should use for snapshot testing
+  // snapshotSerializers: [],
+
+  // The test environment that will be used for testing
+  // testEnvironment: "jest-environment-jsdom",
+
+  // Options that will be passed to the testEnvironment
+  // testEnvironmentOptions: {},
+
+  // Adds a location field to test results
+  // testLocationInResults: false,
+
+  // The glob patterns Jest uses to detect test files
+  testMatch: [
+    "**/test/*.test.ts"
+    // "**/__tests__/**/*.[jt]s?(x)",
+    // "**/?(*.)+(spec|test).[tj]s?(x)"
+  ],
+
+  // An array of regexp pattern strings that are matched against all test paths, matched tests are skipped
+  // testPathIgnorePatterns: [
+  //   "/node_modules/"
+  // ],
+
+  // The regexp pattern or array of patterns that Jest uses to detect test files
+  // testRegex: [],
+
+  // This option allows the use of a custom results processor
+  // testResultsProcessor: null,
+
+  // This option allows use of a custom test runner
+  // testRunner: "jasmine2",
+
+  // This option sets the URL for the jsdom environment. It is reflected in properties such as location.href
+  // testURL: "http://localhost",
+
+  // Setting this value to "fake" allows the use of fake timers for functions such as "setTimeout"
+  // timers: "real",
+
+  // A map from regular expressions to paths to transformers
+  transform: {
+    '^.+\\.tsx?$': 'ts-jest',
+  },
+
+  // An array of regexp pattern strings that are matched against all source file paths, matched files will skip transformation
+  // transformIgnorePatterns: [
+  //   "/node_modules/"
+  // ],
+
+  // An array of regexp pattern strings that are matched against all modules before the module loader will automatically return a mock for them
+  // unmockedModulePathPatterns: undefined,
+
+  // Indicates whether each individual test should be reported during the run
+  // verbose: null,
+
+  // An array of regexp patterns that are matched against all source file paths before re-running tests in watch mode
+  // watchPathIgnorePatterns: [],
+
+  // Whether to use watchman for file crawling
+  // watchman: true,
+};
diff --git a/packages/offix-offline/package.json b/packages/offix-offline/package.json
index e431c0d35..f82993b0c 100644
--- a/packages/offix-offline/package.json
+++ b/packages/offix-offline/package.json
@@ -8,7 +8,7 @@
     "clean": "del coverage src/**/*.js src/**/*.map test/**/*.js test/**/*.map dist types",
     "build": "tsc",
     "watch": "tsc --watch",
-    "test": "mocha",
+    "test": "jest",
     "preintegration-test": "cd integration_test && npm install",
     "integration-test": "cd integration_test && npm test"
   },
@@ -21,17 +21,13 @@
     "access": "public"
   },
   "devDependencies": {
-    "@types/chai": "4.2.3",
     "@types/debug": "4.1.5",
-    "@types/fetch-mock": "7.3.1",
     "@types/graphql": "14.2.3",
-    "@types/mocha": "5.2.7",
-    "chai": "4.2.0",
     "del": "5.1.0",
-    "fetch-mock": "7.5.1",
     "graphql": "14.5.8",
     "graphql-tag": "2.10.1",
-    "mocha": "6.2.1",
+    "jest": "^24.9.0",
+    "ts-jest": "^24.1.0",
     "ts-node": "8.4.1",
     "typescript": "3.6.3"
   },
diff --git a/packages/offix-offline/test/ConflictHandler.test.ts b/packages/offix-offline/test/ConflictHandler.test.ts
new file mode 100644
index 000000000..00e8551f5
--- /dev/null
+++ b/packages/offix-offline/test/ConflictHandler.test.ts
@@ -0,0 +1,93 @@
+import { ConflictHandler } from "../src/conflicts/handler/ConflictHandler";
+import { ConflictListener, ConflictResolutionStrategy, UseClient } from "../src";
+import { VersionedState } from "../src/conflicts/state/VersionedState";
+
+const listener: ConflictListener = {
+  conflictOccurred(listenerBase: any, listenerClient: any, listenerServer: any) {
+    return "conflictOccurred";
+  },
+  mergeOccurred(listenerBase: any, listenerClient: any, listenerServer: any) {
+    return "mergeOccurred";
+  }
+};
+const strategy: ConflictResolutionStrategy = UseClient;
+
+const objectState = new VersionedState();
+const nonConflictedSet = {
+  base: {
+    title: "a title",
+    description: "a description"
+  },
+  client: {
+    title: "client updated title",
+    description: "a description"
+  },
+  server: {
+    title: "a title",
+    description: "server updated description"
+  }
+};
+
+const conflictedTitle = {
+  base: {
+    title: "a title",
+    description: "a description"
+  },
+  client: {
+    title: "client updated title",
+    description: "a description"
+  },
+  server: {
+    title: "server updated title",
+    description: "server updated description"
+  }
+};
+
+const conflictedSet = {
+  base: {
+    title: "a title",
+    description: "a description"
+  },
+  client: {
+    title: "client updated title",
+    description: "client updated description"
+  },
+  server: {
+    title: "server updated title",
+    description: "server updated description"
+  }
+};
+
+it("ensure conflicted is set to false", () => {
+  const handler = new ConflictHandler({...nonConflictedSet, strategy, listener, objectState, operationName: "test"});
+  expect(handler.conflicted).toBe(false);
+});
+
+it("ensure conflicted is set to true", () => {
+  const handler = new ConflictHandler({...conflictedSet, strategy, listener, objectState, operationName: "test"});
+  expect(handler.conflicted).toBe(true);
+});
+
+it("ensure data is merged", () => {
+  const handler = new ConflictHandler({...nonConflictedSet, strategy, listener, objectState, operationName: "test"});
+  const mergedData = handler.executeStrategy();
+  expect(handler.conflicted).toBe(false);
+  expect(mergedData.title).toBe("client updated title");
+  expect(mergedData.description).toBe("server updated description");
+});
+
+it("ensure strategy is called", () => {
+  const handler = new ConflictHandler({...conflictedSet, strategy, listener, objectState, operationName: "test"});
+  const mergedData = handler.executeStrategy();
+  expect(handler.conflicted).toBe(true);
+  expect(mergedData.title).toBe("client updated title");
+  expect(mergedData.description).toBe("client updated description");
+});
+
+it("ensure client data is persisted properly", () => {
+  const handler = new ConflictHandler({...conflictedTitle, strategy, listener, objectState, operationName: "test"});
+  const mergedData = handler.executeStrategy();
+  expect(handler.conflicted).toBe(true);
+  expect(mergedData.title).toBe("client updated title");
+  expect(mergedData.description).toBe("server updated description");
+});
\ No newline at end of file
diff --git a/packages/offix-offline/test/ConflictHandlerTest.ts b/packages/offix-offline/test/ConflictHandlerTest.ts
deleted file mode 100644
index 646af6421..000000000
--- a/packages/offix-offline/test/ConflictHandlerTest.ts
+++ /dev/null
@@ -1,102 +0,0 @@
-import { expect } from "chai";
-import { ConflictHandler } from "../src/conflicts/handler/ConflictHandler";
-import { ConflictListener, ConflictResolutionStrategy, UseClient } from "../src";
-import { VersionedState } from "../src/conflicts/state/VersionedState";
-
-const listener: ConflictListener = {
-  conflictOccurred(listenerBase: any, listenerClient: any, listenerServer: any) {
-    return "conflictOccurred";
-  },
-  mergeOccurred(listenerBase: any, listenerClient: any, listenerServer: any) {
-    return "mergeOccurred";
-  }
-};
-const strategy: ConflictResolutionStrategy = UseClient;
-
-const objectState = new VersionedState();
-const nonConflictedSet = {
-  base: {
-    title: "a title",
-    description: "a description"
-  },
-  client: {
-    title: "client updated title",
-    description: "a description"
-  },
-  server: {
-    title: "a title",
-    description: "server updated description"
-  }
-};
-
-const conflictedTitle = {
-  base: {
-    title: "a title",
-    description: "a description"
-  },
-  client: {
-    title: "client updated title",
-    description: "a description"
-  },
-  server: {
-    title: "server updated title",
-    description: "server updated description"
-  }
-};
-
-const conflictedSet = {
-  base: {
-    title: "a title",
-    description: "a description"
-  },
-  client: {
-    title: "client updated title",
-    description: "client updated description"
-  },
-  server: {
-    title: "server updated title",
-    description: "server updated description"
-  }
-};
-describe("ConflictHandler", () => {
-
-  it("ensure conflicted is set to false", () => {
-
-    const handler = new ConflictHandler({...nonConflictedSet, strategy, listener, objectState, operationName: "test"});
-    expect(handler.conflicted).equal(false);
-  });
-
-  it("ensure conflicted is set to true", () => {
-
-    const handler = new ConflictHandler({...conflictedSet, strategy, listener, objectState, operationName: "test"});
-    expect(handler.conflicted).equal(true);
-  });
-
-  it("ensure data is merged", () => {
-
-    const handler = new ConflictHandler({...nonConflictedSet, strategy, listener, objectState, operationName: "test"});
-    const mergedData = handler.executeStrategy();
-    expect(handler.conflicted).equal(false);
-    expect(mergedData.title).equal("client updated title");
-    expect(mergedData.description).equal("server updated description");
-  });
-
-  it("ensure strategy is called", () => {
-
-    const handler = new ConflictHandler({...conflictedSet, strategy, listener, objectState, operationName: "test"});
-    const mergedData = handler.executeStrategy();
-    expect(handler.conflicted).equal(true);
-    expect(mergedData.title).equal("client updated title");
-    expect(mergedData.description).equal("client updated description");
-  });
-
-  it("ensure client data is persisted properly", () => {
-
-    const handler = new ConflictHandler({...conflictedTitle, strategy, listener, objectState, operationName: "test"});
-    const mergedData = handler.executeStrategy();
-    expect(handler.conflicted).equal(true);
-    expect(mergedData.title).equal("client updated title");
-    expect(mergedData.description).equal("server updated description");
-  });
-
-});
diff --git a/packages/offix-offline/test/IDProcessor.test.ts b/packages/offix-offline/test/IDProcessor.test.ts
new file mode 100644
index 000000000..a6a4f725a
--- /dev/null
+++ b/packages/offix-offline/test/IDProcessor.test.ts
@@ -0,0 +1,51 @@
+import { IDProcessor } from "../src/offline/processors/IDProcessor";
+import { DocumentNode } from "graphql";
+
+it("Process id without change", () => {
+    const idProcessor = new IDProcessor();
+    const finalId = "test:1";
+    const exampleOperation = {
+        mutation: {} as DocumentNode,
+        variables: {
+            id: finalId
+        },
+        optimisticResponse: { test: { id: finalId } },
+        context: {
+            operationName: "test"
+        }
+    };
+    const entry = {
+        operation: {
+            op: exampleOperation,
+            qid: "someId"
+        }
+    };
+    const queue = [entry];
+    idProcessor.execute(queue, entry, { data: { test: { id: "notApplied:1" } } });
+    expect(exampleOperation.variables.id).toBe(finalId);
+});
+
+it("Process with change", () => {
+    const idProcessor = new IDProcessor();
+
+    const finalId = `client:`;
+    const exampleOperation = {
+        mutation: {} as DocumentNode,
+        variables: {
+            id: finalId
+        },
+        optimisticResponse: { test: { id: finalId } },
+        context: {
+            operationName: "test"
+        }
+    };
+    const entry = {
+        operation: {
+            op: exampleOperation,
+            qid: "someId"
+        }
+    };
+    const queue = [entry];
+    idProcessor.execute(queue, entry, { data: { test: { id: "applied:1" } } });
+    expect(exampleOperation.variables.id).toBe("applied:1");
+});
\ No newline at end of file
diff --git a/packages/offix-offline/test/IDProcessorTest.ts b/packages/offix-offline/test/IDProcessorTest.ts
deleted file mode 100644
index a562e3a56..000000000
--- a/packages/offix-offline/test/IDProcessorTest.ts
+++ /dev/null
@@ -1,54 +0,0 @@
-import { IDProcessor } from "../src/offline/processors/IDProcessor";
-import { expect } from "chai";
-import { DocumentNode } from "graphql";
-
-describe("IdProcessor", () => {
-    const idProcessor = new IDProcessor();
-
-    it("Process id without change", () => {
-        const finalId = "test:1";
-        const exampleOperation = {
-            mutation: {} as DocumentNode,
-            variables: {
-                id: finalId
-            },
-            optimisticResponse: { test: { id: finalId } },
-            context: {
-                operationName: "test"
-            }
-        };
-        const entry = {
-            operation: {
-                op: exampleOperation,
-                qid: "someId"
-            }
-        };
-        const queue = [entry];
-        idProcessor.execute(queue, entry, { data: { test: { id: "notApplied:1" } } });
-        expect(exampleOperation.variables.id).equal(finalId);
-    });
-
-    it("Process with change", () => {
-        const finalId = `client:`;
-        const exampleOperation = {
-            mutation: {} as DocumentNode,
-            variables: {
-                id: finalId
-            },
-            optimisticResponse: { test: { id: finalId } },
-            context: {
-                operationName: "test"
-            }
-        };
-        const entry = {
-            operation: {
-                op: exampleOperation,
-                qid: "someId"
-            }
-        };
-        const queue = [entry];
-        idProcessor.execute(queue, entry, { data: { test: { id: "applied:1" } } });
-        expect(exampleOperation.variables.id).equal("applied:1");
-    });
-
-});
diff --git a/packages/offix-offline/test/mocha.opts b/packages/offix-offline/test/mocha.opts
deleted file mode 100644
index 46bc91f0f..000000000
--- a/packages/offix-offline/test/mocha.opts
+++ /dev/null
@@ -1,3 +0,0 @@
---require ts-node/register
---require source-map-support/register
-test/**/**.ts