Plugin producing `*.d.ts` with in-line imports

What happens and why it is wrong

rollup-plugin-typescript2 is generating *.d.ts file that is not valid TypeScript:

export declare function deferredAction<T extends StdOut>(saga: Saga<T, Action>, io: T): (action: DeferredAction) => IterableIterator<SetContextEffect<any> | etc..| import("../node_modules/redux-saga/effects").Effect[]>;

Notice the import("../node_modules/redux-saga/effects").Effect[] that is trying to be used as a type parameter.

I’ve run tsc directly, which behaves as expected (aside from dumping all the built files in the wrong spot).

This is for a library I’m working on, so the source (and the branch) is here

Environment

Versions

• typescript: ^2.9.1
• rollup: ^0.59.4
• rollup-plugin-typescript2: ^0.14.0

rollup.config.js

import typescript from 'rollup-plugin-typescript2'

const baseConfig = {
  plugins: [ typescript() ],

  input: 'src/index.ts',

  external: [
    'redux',
    'redux-saga',
    'redux-saga/effects'
  ]
}

const esConfig = Object.assign(
  {},
  baseConfig,
  {
    output: {
      exports: 'named',
      file: 'dist/es/index.js',
      format: 'es'
    }
  }
)

const cjsConfig = Object.assign(
  {},
  baseConfig,
  {
    output: {
      exports: 'named',
      file: 'dist/cjs/index.js',
      format: 'cjs'
    }
  }
)

export default [
  cjsConfig,
  esConfig
]

tsconfig.json

{
  "exclude": [
    "**/*.test.ts",
    "node_modules"
  ],

  "include": [ "src/**/*.ts" ],

  "compilerOptions": {
    "baseUrl": "./",
    "declaration": true,
    "downlevelIteration": true,
    "jsx": "react",
    "module": "esnext",
    "moduleResolution": "node",
    "noUnusedParameters": true,
    "removeComments": false,
    "sourceMap": true,
    "strict": true,
    "target": "es5",

    "lib": [
      "dom",
      "esnext"
    ],

    "paths": {
      "@/*": ["src/*"]
    },

    "plugins": [
      { "name": "tslint-language-service"}
    ]
  }
}

package.json

{
  "scripts": { "build": "rm -rf dist && npx rollup -c" }
}

plugin output with verbosity 3

I don’t see anything that looks relevant, though I can amend this.

[killtheliterate]

@ezolenko took your advice and ran ./node_modules/.bin/tsc, which does reproduce the problem—hmm, something got weird in TypeScript 2.9.1 — the global tsc is 2.8.1.

I factored out those typings, as they were kind of borked, but still weird.

[ezolenko]

And check that you use the same typescript version when running tsc as when using rollup or webpack plugins (global vs local install)