TypeScript relative path does not resolve to index file

I’m working on a project and I set up absolute path imports in my project. But, it doesn’t resolve to the index file if I put only up to the folder name.

src
 |--modules
      |--search
           |--utils.ts
           |--index.ts

When I import,
import { something } from 'modules/search/index'
it works fine.

But, I when I import like
import { something } from 'modules/search'
It says, src/modules/search.ts not found.

Following is my tsconfig.json.

{
  "compileOnSave": false,
  "compilerOptions": {
    "rootDir": ".",
    "strict": true,
    "sourceMap": true,
    "declaration": false,
    "moduleResolution": "node",
    "emitDecoratorMetadata": true,
    "experimentalDecorators": true,
    "importHelpers": true,
    "target": "es2015",
    "module": "esnext",
    "lib": ["es2017", "dom"],
    "skipLibCheck": true,
    "skipDefaultLibCheck": true,
    "baseUrl": "src",
  },
  "exclude": ["node_modules", "tmp"]
}

How can I solve this problem?

The expected behavior is,
import { something } from 'modules/search' should resolve to src/modules/search/index.ts

import { something } from 'modules/search/utils' should resolve to src/modules/search/utils.ts