diff --git a/langchain-core/.eslintrc.cjs b/langchain-core/.eslintrc.cjs
index 4adf489ade1c..2d66a327d17b 100644
--- a/langchain-core/.eslintrc.cjs
+++ b/langchain-core/.eslintrc.cjs
@@ -11,7 +11,7 @@ module.exports = {
     project: "./tsconfig.json",
     sourceType: "module",
   },
-  plugins: ["@typescript-eslint", "no-instanceof"],
+  plugins: ["@typescript-eslint", "no-instanceof", "eslint-plugin-jest"],
   ignorePatterns: [
     "src/utils/@cfworker",
     "src/utils/fast-json-patch",
@@ -65,5 +65,6 @@ module.exports = {
     "no-lonely-if": 0,
     "prefer-rest-params": 0,
     "new-cap": ["error", { properties: false, capIsNew: false }],
+    'jest/no-focused-tests': 'error',
   },
 };
diff --git a/langchain-core/package.json b/langchain-core/package.json
index 45ee433c91e0..97a1a9082495 100644
--- a/langchain-core/package.json
+++ b/langchain-core/package.json
@@ -51,6 +51,7 @@
     "eslint-config-airbnb-base": "^15.0.0",
     "eslint-config-prettier": "^8.6.0",
     "eslint-plugin-import": "^2.27.5",
+    "eslint-plugin-jest": "^27.6.0",
     "eslint-plugin-no-instanceof": "^1.0.1",
     "eslint-plugin-prettier": "^4.2.1",
     "jest": "^29.5.0",
diff --git a/langchain/.eslintrc.cjs b/langchain/.eslintrc.cjs
index bab396aedde2..efa72569f323 100644
--- a/langchain/.eslintrc.cjs
+++ b/langchain/.eslintrc.cjs
@@ -11,7 +11,7 @@ module.exports = {
     project: "./tsconfig.json",
     sourceType: "module",
   },
-  plugins: ["@typescript-eslint", "no-instanceof"],
+  plugins: ["@typescript-eslint", "no-instanceof", "eslint-plugin-jest"],
   ignorePatterns: [
     "src/util/@cfworker",
     "src/util/fast-json-patch",
@@ -65,5 +65,6 @@ module.exports = {
     "no-lonely-if": 0,
     "prefer-rest-params": 0,
     "new-cap": ["error", { properties: false, capIsNew: false }],
+    'jest/no-focused-tests': 'error',
   },
 };
diff --git a/langchain/package.json b/langchain/package.json
index 5194d640e0b8..8245271f1741 100644
--- a/langchain/package.json
+++ b/langchain/package.json
@@ -927,6 +927,7 @@
     "eslint-config-airbnb-base": "^15.0.0",
     "eslint-config-prettier": "^8.6.0",
     "eslint-plugin-import": "^2.27.5",
+    "eslint-plugin-jest": "^27.6.0",
     "eslint-plugin-no-instanceof": "^1.0.1",
     "eslint-plugin-prettier": "^4.2.1",
     "faiss-node": "^0.5.1",
diff --git a/langchain/src/document_loaders/tests/gitbook.int.test.ts b/langchain/src/document_loaders/tests/gitbook.int.test.ts
index 8b72dac06f64..04e8b3f26f2f 100644
--- a/langchain/src/document_loaders/tests/gitbook.int.test.ts
+++ b/langchain/src/document_loaders/tests/gitbook.int.test.ts
@@ -10,7 +10,7 @@ test("Test GitbookLoader", async () => {
   console.log("Loaded", docs.length, "Gitbook documents");
 });
 
-test.only("Test GitbookLoader with shouldLoadAllPaths", async () => {
+test("Test GitbookLoader with shouldLoadAllPaths", async () => {
   const loader = new GitbookLoader("https://docs.maildrop.cc", {
     shouldLoadAllPaths: true,
   });
diff --git a/libs/langchain-anthropic/.eslintrc.cjs b/libs/langchain-anthropic/.eslintrc.cjs
index 4adf489ade1c..2d66a327d17b 100644
--- a/libs/langchain-anthropic/.eslintrc.cjs
+++ b/libs/langchain-anthropic/.eslintrc.cjs
@@ -11,7 +11,7 @@ module.exports = {
     project: "./tsconfig.json",
     sourceType: "module",
   },
-  plugins: ["@typescript-eslint", "no-instanceof"],
+  plugins: ["@typescript-eslint", "no-instanceof", "eslint-plugin-jest"],
   ignorePatterns: [
     "src/utils/@cfworker",
     "src/utils/fast-json-patch",
@@ -65,5 +65,6 @@ module.exports = {
     "no-lonely-if": 0,
     "prefer-rest-params": 0,
     "new-cap": ["error", { properties: false, capIsNew: false }],
+    'jest/no-focused-tests': 'error',
   },
 };
diff --git a/libs/langchain-anthropic/package.json b/libs/langchain-anthropic/package.json
index 3dee717d9b20..eaaba4dcbcac 100644
--- a/libs/langchain-anthropic/package.json
+++ b/libs/langchain-anthropic/package.json
@@ -45,6 +45,7 @@
     "eslint-config-airbnb-base": "^15.0.0",
     "eslint-config-prettier": "^8.6.0",
     "eslint-plugin-import": "^2.27.5",
+    "eslint-plugin-jest": "^27.6.0",
     "eslint-plugin-no-instanceof": "^1.0.1",
     "eslint-plugin-prettier": "^4.2.1",
     "jest": "^29.5.0",
diff --git a/libs/langchain-openai/.eslintrc.cjs b/libs/langchain-openai/.eslintrc.cjs
index 4adf489ade1c..2d66a327d17b 100644
--- a/libs/langchain-openai/.eslintrc.cjs
+++ b/libs/langchain-openai/.eslintrc.cjs
@@ -11,7 +11,7 @@ module.exports = {
     project: "./tsconfig.json",
     sourceType: "module",
   },
-  plugins: ["@typescript-eslint", "no-instanceof"],
+  plugins: ["@typescript-eslint", "no-instanceof", "eslint-plugin-jest"],
   ignorePatterns: [
     "src/utils/@cfworker",
     "src/utils/fast-json-patch",
@@ -65,5 +65,6 @@ module.exports = {
     "no-lonely-if": 0,
     "prefer-rest-params": 0,
     "new-cap": ["error", { properties: false, capIsNew: false }],
+    'jest/no-focused-tests': 'error',
   },
 };
diff --git a/libs/langchain-openai/package.json b/libs/langchain-openai/package.json
index 3f348059ec94..0f9a811a068e 100644
--- a/libs/langchain-openai/package.json
+++ b/libs/langchain-openai/package.json
@@ -47,6 +47,7 @@
     "eslint-config-airbnb-base": "^15.0.0",
     "eslint-config-prettier": "^8.6.0",
     "eslint-plugin-import": "^2.27.5",
+    "eslint-plugin-jest": "^27.6.0",
     "eslint-plugin-no-instanceof": "^1.0.1",
     "eslint-plugin-prettier": "^4.2.1",
     "jest": "^29.5.0",
diff --git a/yarn.lock b/yarn.lock
index 7814498c3bb2..495765f84681 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -7970,6 +7970,7 @@ __metadata:
     eslint-config-airbnb-base: ^15.0.0
     eslint-config-prettier: ^8.6.0
     eslint-plugin-import: ^2.27.5
+    eslint-plugin-jest: ^27.6.0
     eslint-plugin-no-instanceof: ^1.0.1
     eslint-plugin-prettier: ^4.2.1
     jest: ^29.5.0
@@ -7996,6 +7997,7 @@ __metadata:
     eslint-config-airbnb-base: ^15.0.0
     eslint-config-prettier: ^8.6.0
     eslint-plugin-import: ^2.27.5
+    eslint-plugin-jest: ^27.6.0
     eslint-plugin-no-instanceof: ^1.0.1
     eslint-plugin-prettier: ^4.2.1
     jest: ^29.5.0
@@ -8026,6 +8028,7 @@ __metadata:
     eslint-config-airbnb-base: ^15.0.0
     eslint-config-prettier: ^8.6.0
     eslint-plugin-import: ^2.27.5
+    eslint-plugin-jest: ^27.6.0
     eslint-plugin-no-instanceof: ^1.0.1
     eslint-plugin-prettier: ^4.2.1
     jest: ^29.5.0
@@ -12150,6 +12153,16 @@ __metadata:
   languageName: node
   linkType: hard
 
+"@typescript-eslint/scope-manager@npm:5.62.0":
+  version: 5.62.0
+  resolution: "@typescript-eslint/scope-manager@npm:5.62.0"
+  dependencies:
+    "@typescript-eslint/types": 5.62.0
+    "@typescript-eslint/visitor-keys": 5.62.0
+  checksum: 6062d6b797fe1ce4d275bb0d17204c827494af59b5eaf09d8a78cdd39dadddb31074dded4297aaf5d0f839016d601032857698b0e4516c86a41207de606e9573
+  languageName: node
+  linkType: hard
+
 "@typescript-eslint/scope-manager@npm:6.9.1":
   version: 6.9.1
   resolution: "@typescript-eslint/scope-manager@npm:6.9.1"
@@ -12208,6 +12221,13 @@ __metadata:
   languageName: node
   linkType: hard
 
+"@typescript-eslint/types@npm:5.62.0":
+  version: 5.62.0
+  resolution: "@typescript-eslint/types@npm:5.62.0"
+  checksum: 48c87117383d1864766486f24de34086155532b070f6264e09d0e6139449270f8a9559cfef3c56d16e3bcfb52d83d42105d61b36743626399c7c2b5e0ac3b670
+  languageName: node
+  linkType: hard
+
 "@typescript-eslint/types@npm:6.9.1":
   version: 6.9.1
   resolution: "@typescript-eslint/types@npm:6.9.1"
@@ -12251,6 +12271,24 @@ __metadata:
   languageName: node
   linkType: hard
 
+"@typescript-eslint/typescript-estree@npm:5.62.0":
+  version: 5.62.0
+  resolution: "@typescript-eslint/typescript-estree@npm:5.62.0"
+  dependencies:
+    "@typescript-eslint/types": 5.62.0
+    "@typescript-eslint/visitor-keys": 5.62.0
+    debug: ^4.3.4
+    globby: ^11.1.0
+    is-glob: ^4.0.3
+    semver: ^7.3.7
+    tsutils: ^3.21.0
+  peerDependenciesMeta:
+    typescript:
+      optional: true
+  checksum: 3624520abb5807ed8f57b1197e61c7b1ed770c56dfcaca66372d584ff50175225798bccb701f7ef129d62c5989070e1ee3a0aa2d84e56d9524dcf011a2bb1a52
+  languageName: node
+  linkType: hard
+
 "@typescript-eslint/typescript-estree@npm:6.9.1":
   version: 6.9.1
   resolution: "@typescript-eslint/typescript-estree@npm:6.9.1"
@@ -12305,6 +12343,24 @@ __metadata:
   languageName: node
   linkType: hard
 
+"@typescript-eslint/utils@npm:^5.10.0":
+  version: 5.62.0
+  resolution: "@typescript-eslint/utils@npm:5.62.0"
+  dependencies:
+    "@eslint-community/eslint-utils": ^4.2.0
+    "@types/json-schema": ^7.0.9
+    "@types/semver": ^7.3.12
+    "@typescript-eslint/scope-manager": 5.62.0
+    "@typescript-eslint/types": 5.62.0
+    "@typescript-eslint/typescript-estree": 5.62.0
+    eslint-scope: ^5.1.1
+    semver: ^7.3.7
+  peerDependencies:
+    eslint: ^6.0.0 || ^7.0.0 || ^8.0.0
+  checksum: ee9398c8c5db6d1da09463ca7bf36ed134361e20131ea354b2da16a5fdb6df9ba70c62a388d19f6eebb421af1786dbbd79ba95ddd6ab287324fc171c3e28d931
+  languageName: node
+  linkType: hard
+
 "@typescript-eslint/visitor-keys@npm:5.54.1":
   version: 5.54.1
   resolution: "@typescript-eslint/visitor-keys@npm:5.54.1"
@@ -12325,6 +12381,16 @@ __metadata:
   languageName: node
   linkType: hard
 
+"@typescript-eslint/visitor-keys@npm:5.62.0":
+  version: 5.62.0
+  resolution: "@typescript-eslint/visitor-keys@npm:5.62.0"
+  dependencies:
+    "@typescript-eslint/types": 5.62.0
+    eslint-visitor-keys: ^3.3.0
+  checksum: 976b05d103fe8335bef5c93ad3f76d781e3ce50329c0243ee0f00c0fcfb186c81df50e64bfdd34970148113f8ade90887f53e3c4938183afba830b4ba8e30a35
+  languageName: node
+  linkType: hard
+
 "@typescript-eslint/visitor-keys@npm:6.9.1":
   version: 6.9.1
   resolution: "@typescript-eslint/visitor-keys@npm:6.9.1"
@@ -17280,6 +17346,24 @@ __metadata:
   languageName: node
   linkType: hard
 
+"eslint-plugin-jest@npm:^27.6.0":
+  version: 27.6.0
+  resolution: "eslint-plugin-jest@npm:27.6.0"
+  dependencies:
+    "@typescript-eslint/utils": ^5.10.0
+  peerDependencies:
+    "@typescript-eslint/eslint-plugin": ^5.0.0 || ^6.0.0
+    eslint: ^7.0.0 || ^8.0.0
+    jest: "*"
+  peerDependenciesMeta:
+    "@typescript-eslint/eslint-plugin":
+      optional: true
+    jest:
+      optional: true
+  checksum: 4c42641f9bf2d597761637028083e20b9f81762308e98baae40eb805d3e81ff8d837f06f4f0c1a2fd249e2be2fb24d33b7aafeaa8942de805c2b8d7c3b6fc4e4
+  languageName: node
+  linkType: hard
+
 "eslint-plugin-jsx-a11y@npm:^6.6.0":
   version: 6.7.1
   resolution: "eslint-plugin-jsx-a11y@npm:6.7.1"
@@ -22397,6 +22481,7 @@ __metadata:
     eslint-config-airbnb-base: ^15.0.0
     eslint-config-prettier: ^8.6.0
     eslint-plugin-import: ^2.27.5
+    eslint-plugin-jest: ^27.6.0
     eslint-plugin-no-instanceof: ^1.0.1
     eslint-plugin-prettier: ^4.2.1
     expr-eval: ^2.0.2