Rollup module resolution should observe tsconfig compilerOptions#paths

[sndrs]

Feature Use Case

We have compilerOptions#paths defined to map package imports in a monorepo to their source code paths, e.g.

{
  "compilerOptions":{
    "paths": {
      "@guardian/src-accordion": ["../src-accordion/index"]
    }
  }
}

Rollup doesn't observe these. We can get round it by using the (nearly) identical config with @rollup/plugin-alias.

Feature Proposal

Convey compilerOptions#paths to rollup's module resolution algorithm.