Validate typescript, but don't build it

javascript node.js typescript eslint typescript-eslint

You can simply use the option noEmit in your use case to not emit the output.

{  "compilerOptions": {    // ...    "noEmit": true,  }}

I think you can also go for creating the new configuration for testing files to include only your test code extending from the current one.

tsconfig.test.json

{  "extends": "./tsconfig.json",  {   "compilerOptions": {      "noEmit": true,    },   "include": [      "__tests__", // your test file   ],  }}

package.json

{  "scripts": {    "build": "tsc",    "test:typeCheck": "tsc --project tsconfig.test.json"  }}

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