diff --git a/.github/workflows/ci-pull-requests.yml b/.github/workflows/ci-pull-requests.yml
index d467189d76..f6e9d8a7d5 100644
--- a/.github/workflows/ci-pull-requests.yml
+++ b/.github/workflows/ci-pull-requests.yml
@@ -24,6 +24,9 @@ jobs:
       - name: Build
         run: pnpm build
 
+      - name: Run typecheck
+        run: pnpm typecheck
+
       - name: Cache build artifacts
         uses: actions/cache/save@v4.0.0
         with:
diff --git a/package.json b/package.json
index f87f698170..ecb2e74ba1 100644
--- a/package.json
+++ b/package.json
@@ -13,7 +13,7 @@
     "build": "turbo run build",
     "build:backend": "pnpm --filter=!@n8n/chat --filter=!@n8n/codemirror-lang --filter=!n8n-design-system --filter=!n8n-editor-ui build",
     "build:frontend": "pnpm --filter=@n8n/chat --filter=@n8n/codemirror-lang --filter=n8n-design-system --filter=n8n-editor-ui build",
-    "typecheck": "turbo run typecheck",
+    "typecheck": "pnpm --filter=!@n8n/chat --filter=!@n8n/storybook --filter=!n8n-core --filter=!n8n-editor-ui --filter=!n8n-workflow --filter=!n8n typecheck",
     "dev": "turbo run dev --parallel --filter=!n8n-design-system --filter=!@n8n/chat",
     "dev:ai": "turbo run dev --parallel --filter=@n8n/nodes-langchain --filter=n8n --filter=n8n-core",
     "clean": "turbo run clean --parallel",
@@ -26,7 +26,7 @@
     "start:tunnel": "./packages/cli/bin/n8n start --tunnel",
     "start:windows": "cd packages/cli/bin && n8n",
     "test": "turbo run test",
-    "test:backend": "pnpm --filter=!@n8n/chat --filter=!@n8n/codemirror-lang --filter=!n8n-design-system --filter=!n8n-editor-ui  --filter=!n8n-nodes-base test --filter=!@n8n/n8n-nodes-langchain test",
+    "test:backend": "pnpm --filter=!@n8n/chat --filter=!@n8n/codemirror-lang --filter=!n8n-design-system --filter=!n8n-editor-ui --filter=!n8n-nodes-base --filter=!@n8n/n8n-nodes-langchain test",
     "test:nodes": "pnpm --filter=n8n-nodes-base --filter=@n8n/n8n-nodes-langchain test",
     "test:frontend": "pnpm --filter=@n8n/chat --filter=@n8n/codemirror-lang --filter=n8n-design-system --filter=n8n-editor-ui test",
     "watch": "turbo run watch --parallel",
diff --git a/packages/@n8n/client-oauth2/package.json b/packages/@n8n/client-oauth2/package.json
index 96f568f060..6182d6314c 100644
--- a/packages/@n8n/client-oauth2/package.json
+++ b/packages/@n8n/client-oauth2/package.json
@@ -4,7 +4,7 @@
   "scripts": {
     "clean": "rimraf dist .turbo",
     "dev": "pnpm watch",
-    "typecheck": "tsc",
+    "typecheck": "tsc --noEmit",
     "build": "tsc -p tsconfig.build.json",
     "format": "prettier --write . --ignore-path ../../../.prettierignore",
     "lint": "eslint . --quiet",
diff --git a/packages/@n8n/client-oauth2/tsconfig.build.json b/packages/@n8n/client-oauth2/tsconfig.build.json
index 30910a3bf1..82375d5e15 100644
--- a/packages/@n8n/client-oauth2/tsconfig.build.json
+++ b/packages/@n8n/client-oauth2/tsconfig.build.json
@@ -1,6 +1,7 @@
 {
 	"extends": ["./tsconfig.json", "../../../tsconfig.build.json"],
 	"compilerOptions": {
+		"composite": true,
 		"rootDir": "src",
 		"outDir": "dist",
 		"tsBuildInfoFile": "dist/build.tsbuildinfo"
diff --git a/packages/@n8n/client-oauth2/tsconfig.json b/packages/@n8n/client-oauth2/tsconfig.json
index a693815582..8b5a78cf75 100644
--- a/packages/@n8n/client-oauth2/tsconfig.json
+++ b/packages/@n8n/client-oauth2/tsconfig.json
@@ -3,8 +3,6 @@
 	"compilerOptions": {
 		"rootDir": ".",
 		"types": ["node", "jest"],
-		"composite": true,
-		"noEmit": true,
 		"baseUrl": "src",
 		"paths": {
 			"@/*": ["./*"]
diff --git a/packages/@n8n/codemirror-lang/tsconfig.json b/packages/@n8n/codemirror-lang/tsconfig.json
index 77ff04eab7..04a4944207 100644
--- a/packages/@n8n/codemirror-lang/tsconfig.json
+++ b/packages/@n8n/codemirror-lang/tsconfig.json
@@ -2,8 +2,7 @@
 	"extends": "../../../tsconfig.json",
 	"compilerOptions": {
 		"rootDir": ".",
-		"tsBuildInfoFile": "dist/typecheck.tsbuildinfo",
-		"strict": true
+		"tsBuildInfoFile": "dist/typecheck.tsbuildinfo"
 	},
 	"include": ["src/**/*.ts", "test/**/*.ts"]
 }
diff --git a/packages/@n8n/imap/package.json b/packages/@n8n/imap/package.json
index b0c1947730..f8ffd762ca 100644
--- a/packages/@n8n/imap/package.json
+++ b/packages/@n8n/imap/package.json
@@ -4,7 +4,7 @@
   "scripts": {
     "clean": "rimraf dist .turbo",
     "dev": "pnpm watch",
-    "typecheck": "tsc",
+    "typecheck": "tsc --noEmit",
     "build": "tsc -p tsconfig.build.json",
     "format": "prettier --write . --ignore-path ../../../.prettierignore",
     "lint": "eslint . --quiet",
diff --git a/packages/@n8n/imap/tsconfig.build.json b/packages/@n8n/imap/tsconfig.build.json
index 30910a3bf1..82375d5e15 100644
--- a/packages/@n8n/imap/tsconfig.build.json
+++ b/packages/@n8n/imap/tsconfig.build.json
@@ -1,6 +1,7 @@
 {
 	"extends": ["./tsconfig.json", "../../../tsconfig.build.json"],
 	"compilerOptions": {
+		"composite": true,
 		"rootDir": "src",
 		"outDir": "dist",
 		"tsBuildInfoFile": "dist/build.tsbuildinfo"
diff --git a/packages/@n8n/imap/tsconfig.json b/packages/@n8n/imap/tsconfig.json
index ca1ca3154c..9c32bd67a1 100644
--- a/packages/@n8n/imap/tsconfig.json
+++ b/packages/@n8n/imap/tsconfig.json
@@ -3,8 +3,6 @@
 	"compilerOptions": {
 		"rootDir": ".",
 		"types": ["node", "jest"],
-		"composite": true,
-		"noEmit": true,
 		"baseUrl": "src",
 		"tsBuildInfoFile": "dist/typecheck.tsbuildinfo"
 	},
diff --git a/packages/@n8n/nodes-langchain/package.json b/packages/@n8n/nodes-langchain/package.json
index 0dc7d50ac8..0f640ac34e 100644
--- a/packages/@n8n/nodes-langchain/package.json
+++ b/packages/@n8n/nodes-langchain/package.json
@@ -12,7 +12,7 @@
   "scripts": {
     "clean": "rimraf dist .turbo",
     "dev": "pnpm run watch",
-    "typecheck": "tsc",
+    "typecheck": "tsc --noEmit",
     "build": "tsc -p tsconfig.build.json && pnpm n8n-copy-icons && pnpm build:metadata",
     "build:metadata": "pnpm n8n-generate-known && pnpm n8n-generate-ui-types",
     "format": "prettier nodes credentials --write",
diff --git a/packages/@n8n/nodes-langchain/tsconfig.build.json b/packages/@n8n/nodes-langchain/tsconfig.build.json
index a3b8ff9a40..66ebb20b17 100644
--- a/packages/@n8n/nodes-langchain/tsconfig.build.json
+++ b/packages/@n8n/nodes-langchain/tsconfig.build.json
@@ -1,9 +1,6 @@
 {
-	"extends": ["./tsconfig.json"],
+	"extends": ["./tsconfig.json", "../../../tsconfig.build.json"],
 	"compilerOptions": {
-		"types": ["node"],
-		"noEmit": false,
-		"declaration": true,
 		"outDir": "dist",
 		"tsBuildInfoFile": "dist/build.tsbuildinfo"
 	},
diff --git a/packages/@n8n/nodes-langchain/tsconfig.json b/packages/@n8n/nodes-langchain/tsconfig.json
index 734160344c..f210bbc5b3 100644
--- a/packages/@n8n/nodes-langchain/tsconfig.json
+++ b/packages/@n8n/nodes-langchain/tsconfig.json
@@ -1,24 +1,14 @@
 {
+	"extends": ["../../../tsconfig.json", "../../../tsconfig.backend.json"],
 	"compilerOptions": {
-		"strict": true,
-		"module": "commonjs",
-		"moduleResolution": "node",
-		"target": "es2019",
-		"lib": ["es2019", "es2020", "es2022.error"],
-		"removeComments": true,
-		"useUnknownInCatchVariables": false,
-		"forceConsistentCasingInFileNames": true,
-		"noImplicitAny": true,
-		"noImplicitReturns": true,
-		"strictNullChecks": true,
-		"preserveConstEnums": true,
-		"esModuleInterop": true,
-		"resolveJsonModule": true,
-		"incremental": true,
-		"declaration": true,
-		"sourceMap": true,
-		"skipLibCheck": true,
-		"outDir": "./dist/"
+		"lib": ["es2020", "es2022.error"],
+		"tsBuildInfoFile": "dist/typecheck.tsbuildinfo",
+		// TODO: remove all options below this line
+		"useUnknownInCatchVariables": false
 	},
-	"include": ["credentials/**/*", "nodes/**/*", "utils/**/*.ts", "nodes/**/*.json", "types/*.ts"]
+	"include": ["credentials/**/*", "nodes/**/*", "utils/**/*.ts", "nodes/**/*.json", "types/*.ts"],
+	"references": [
+		{ "path": "../../workflow/tsconfig.build.json" },
+		{ "path": "../../core/tsconfig.build.json" }
+	]
 }
diff --git a/packages/@n8n/permissions/package.json b/packages/@n8n/permissions/package.json
index be47774169..e39b333c84 100644
--- a/packages/@n8n/permissions/package.json
+++ b/packages/@n8n/permissions/package.json
@@ -4,7 +4,7 @@
   "scripts": {
     "clean": "rimraf dist .turbo",
     "dev": "pnpm watch",
-    "typecheck": "tsc",
+    "typecheck": "tsc --noEmit",
     "build": "tsc -p tsconfig.build.json",
     "format": "prettier --write . --ignore-path ../../../.prettierignore",
     "lint": "eslint . --quiet",
diff --git a/packages/@n8n/permissions/tsconfig.build.json b/packages/@n8n/permissions/tsconfig.build.json
index 30910a3bf1..82375d5e15 100644
--- a/packages/@n8n/permissions/tsconfig.build.json
+++ b/packages/@n8n/permissions/tsconfig.build.json
@@ -1,6 +1,7 @@
 {
 	"extends": ["./tsconfig.json", "../../../tsconfig.build.json"],
 	"compilerOptions": {
+		"composite": true,
 		"rootDir": "src",
 		"outDir": "dist",
 		"tsBuildInfoFile": "dist/build.tsbuildinfo"
diff --git a/packages/@n8n/permissions/tsconfig.json b/packages/@n8n/permissions/tsconfig.json
index a693815582..8b5a78cf75 100644
--- a/packages/@n8n/permissions/tsconfig.json
+++ b/packages/@n8n/permissions/tsconfig.json
@@ -3,8 +3,6 @@
 	"compilerOptions": {
 		"rootDir": ".",
 		"types": ["node", "jest"],
-		"composite": true,
-		"noEmit": true,
 		"baseUrl": "src",
 		"paths": {
 			"@/*": ["./*"]
diff --git a/packages/cli/package.json b/packages/cli/package.json
index 48c4c46993..18424d013c 100644
--- a/packages/cli/package.json
+++ b/packages/cli/package.json
@@ -21,7 +21,7 @@
   },
   "scripts": {
     "clean": "rimraf dist .turbo",
-    "typecheck": "tsc",
+    "typecheck": "tsc --noEmit",
     "build": "tsc -p tsconfig.build.json && tsc-alias -p tsconfig.build.json && node scripts/build.mjs",
     "buildAndDev": "pnpm run build && pnpm run dev",
     "dev": "concurrently -k -n \"TypeScript,Node\" -c \"yellow.bold,cyan.bold\" \"npm run watch\" \"nodemon\"",
diff --git a/packages/core/package.json b/packages/core/package.json
index 2e130e39fc..5f27545419 100644
--- a/packages/core/package.json
+++ b/packages/core/package.json
@@ -22,7 +22,7 @@
   },
   "scripts": {
     "clean": "rimraf dist .turbo",
-    "typecheck": "tsc",
+    "typecheck": "tsc --noEmit",
     "build": "tsc -p tsconfig.build.json",
     "dev": "pnpm watch",
     "format": "prettier --write . --ignore-path ../../.prettierignore",
diff --git a/packages/core/tsconfig.build.json b/packages/core/tsconfig.build.json
index 1e8a2ff7fa..1b9ea8720b 100644
--- a/packages/core/tsconfig.build.json
+++ b/packages/core/tsconfig.build.json
@@ -1,6 +1,7 @@
 {
 	"extends": ["./tsconfig.json", "../../tsconfig.build.json"],
 	"compilerOptions": {
+		"composite": true,
 		"rootDir": "src",
 		"outDir": "dist",
 		"tsBuildInfoFile": "dist/build.tsbuildinfo"
diff --git a/packages/core/tsconfig.json b/packages/core/tsconfig.json
index cf60622e2b..401bb177c4 100644
--- a/packages/core/tsconfig.json
+++ b/packages/core/tsconfig.json
@@ -2,7 +2,6 @@
 	"extends": ["../../tsconfig.json", "../../tsconfig.backend.json"],
 	"compilerOptions": {
 		"rootDir": ".",
-		"composite": true,
 		"baseUrl": "src",
 		"paths": {
 			"@/*": ["./*"]
diff --git a/packages/design-system/src/mixins/locale.ts b/packages/design-system/src/mixins/locale.ts
index a695c0ca55..7c4ab37a6b 100644
--- a/packages/design-system/src/mixins/locale.ts
+++ b/packages/design-system/src/mixins/locale.ts
@@ -2,8 +2,8 @@ import { t } from '../locale';
 
 export default {
 	methods: {
-		t(path: string, ...args: string[]) {
-			return t.call(this, path, ...args);
+		t(path: string, options: object) {
+			return t.call(this, path, options);
 		},
 	},
 };
diff --git a/packages/design-system/tsconfig.json b/packages/design-system/tsconfig.json
index afd462cb8f..fd2232a2be 100644
--- a/packages/design-system/tsconfig.json
+++ b/packages/design-system/tsconfig.json
@@ -17,7 +17,6 @@
 		},
 		"lib": ["esnext", "dom", "dom.iterable", "scripthost"],
 		// TODO: remove all options below this line
-		"strict": false,
 		"noImplicitAny": false,
 		"noImplicitReturns": false
 	},
diff --git a/packages/nodes-base/nodes/Peekalink/test/Peekalink.node.test.ts b/packages/nodes-base/nodes/Peekalink/test/Peekalink.node.test.ts
index a51dc545fe..1abfe7b995 100644
--- a/packages/nodes-base/nodes/Peekalink/test/Peekalink.node.test.ts
+++ b/packages/nodes-base/nodes/Peekalink/test/Peekalink.node.test.ts
@@ -2,6 +2,7 @@ import { apiUrl } from '../Peekalink.node';
 import type { WorkflowTestData } from '@test/nodes/types';
 import { executeWorkflow } from '@test/nodes/ExecuteWorkflow';
 import * as Helpers from '@test/nodes/Helpers';
+import { NodeConnectionType } from 'n8n-workflow';
 
 describe('Peekalink Node', () => {
 	const exampleComPreview = {
@@ -57,7 +58,7 @@ describe('Peekalink Node', () => {
 								[
 									{
 										node: 'Peekalink',
-										type: 'main',
+										type: NodeConnectionType.Main,
 										index: 0,
 									},
 								],
@@ -129,7 +130,7 @@ describe('Peekalink Node', () => {
 								[
 									{
 										node: 'Peekalink',
-										type: 'main',
+										type: NodeConnectionType.Main,
 										index: 0,
 									},
 								],
diff --git a/packages/nodes-base/nodes/StopAndError/test/node/StopAndError.test.ts b/packages/nodes-base/nodes/StopAndError/test/node/StopAndError.test.ts
index dc0c630de6..4cc003fa7f 100644
--- a/packages/nodes-base/nodes/StopAndError/test/node/StopAndError.test.ts
+++ b/packages/nodes-base/nodes/StopAndError/test/node/StopAndError.test.ts
@@ -1,5 +1,5 @@
 /* eslint-disable @typescript-eslint/no-loop-func */
-import type { IDataObject } from 'n8n-workflow';
+import { NodeConnectionType, type IDataObject } from 'n8n-workflow';
 import type { WorkflowTestData } from '@test/nodes/types';
 import { executeWorkflow } from '@test/nodes/ExecuteWorkflow';
 import * as Helpers from '@test/nodes/Helpers';
@@ -49,12 +49,12 @@ describe('Execute Stop and Error Node', () => {
 								[
 									{
 										node: 'Stop and Error1',
-										type: 'main',
+										type: NodeConnectionType.Main,
 										index: 0,
 									},
 									{
 										node: 'Stop and Error',
-										type: 'main',
+										type: NodeConnectionType.Main,
 										index: 0,
 									},
 								],
diff --git a/packages/nodes-base/package.json b/packages/nodes-base/package.json
index 904a1753da..ee93ae804d 100644
--- a/packages/nodes-base/package.json
+++ b/packages/nodes-base/package.json
@@ -16,7 +16,7 @@
   "scripts": {
     "clean": "rimraf dist .turbo",
     "dev": "pnpm watch",
-    "typecheck": "tsc",
+    "typecheck": "tsc --noEmit",
     "build": "tsc -p tsconfig.build.json && tsc-alias -p tsconfig.build.json && pnpm n8n-copy-icons && pnpm n8n-generate-translations && pnpm build:metadata",
     "build:metadata": "pnpm n8n-generate-known && pnpm n8n-generate-ui-types",
     "format": "prettier --write . --ignore-path ../../.prettierignore",
diff --git a/packages/workflow/package.json b/packages/workflow/package.json
index 67618d22da..93df4dbc7e 100644
--- a/packages/workflow/package.json
+++ b/packages/workflow/package.json
@@ -26,7 +26,7 @@
   "scripts": {
     "clean": "rimraf dist .turbo",
     "dev": "pnpm watch",
-    "typecheck": "tsc",
+    "typecheck": "tsc --noEmit",
     "build": "tsc -p tsconfig.build.json",
     "format": "prettier --write . --ignore-path ../../.prettierignore",
     "lint": "eslint . --quiet",
diff --git a/packages/workflow/tsconfig.build.json b/packages/workflow/tsconfig.build.json
index 1e8a2ff7fa..1b9ea8720b 100644
--- a/packages/workflow/tsconfig.build.json
+++ b/packages/workflow/tsconfig.build.json
@@ -1,6 +1,7 @@
 {
 	"extends": ["./tsconfig.json", "../../tsconfig.build.json"],
 	"compilerOptions": {
+		"composite": true,
 		"rootDir": "src",
 		"outDir": "dist",
 		"tsBuildInfoFile": "dist/build.tsbuildinfo"
diff --git a/packages/workflow/tsconfig.json b/packages/workflow/tsconfig.json
index cf7874454e..2f0507b565 100644
--- a/packages/workflow/tsconfig.json
+++ b/packages/workflow/tsconfig.json
@@ -2,7 +2,6 @@
 	"extends": "../../tsconfig.json",
 	"compilerOptions": {
 		"rootDir": ".",
-		"composite": true,
 		"baseUrl": "src",
 		"paths": {
 			"@/*": ["./*"]
diff --git a/tsconfig.backend.json b/tsconfig.backend.json
index 438fc8851b..34876f426e 100644
--- a/tsconfig.backend.json
+++ b/tsconfig.backend.json
@@ -1,6 +1,5 @@
 {
 	"compilerOptions": {
-		"types": ["node", "jest"],
-		"noEmit": true
+		"types": ["node", "jest"]
 	}
 }
diff --git a/tsconfig.build.json b/tsconfig.build.json
index 8a1a0105e3..a0401dca2b 100644
--- a/tsconfig.build.json
+++ b/tsconfig.build.json
@@ -1,7 +1,6 @@
 {
 	"compilerOptions": {
 		"types": ["node"],
-		"noEmit": false,
 		"noUnusedLocals": false,
 		"noUnusedParameters": false,
 		"declaration": true