Not creating index.d.ts file -- no tsconfig present

[tamb]

What happens and why it is wrong

This does not output a types declaration even with the config option set

Environment

Windows 10

Versions

• typescript: 3.9.3
• rollup: 2.11.2
• rollup-plugin-typescript2: 0.27.1

rollup.config.js

import { terser } from "rollup-plugin-terser";
import babel from "@rollup/plugin-babel";
import typescript from "rollup-plugin-typescript2";

export default [
  {
    input: "src/polyfill.js",
    output: {
      file: "dist/polyfill.js",
      format: "umd",
    },
    plugins: [
      terser({
        compress: true,
      }),
      babel({
        exclude: "node_modules/**",
      }),
    ],
  },
  {
    input: "src/index.ts",
    output: {
      file: "dist/index.js",
      format: "umd",
      name: "byString",
    },
    plugins: [
      terser({
        compress: true,
      }),
      babel({
        exclude: "node_modules/**",
      }),
      typescript({
        declaration: true,
      }),
    ],
  },
];

tsconfig.json

none

package.json

{
  "name": "object-bystring",
  "version": "4.1.1",
  "description": "Access and alter objects using string literals",
  "main": "dist/index.js",
  "scripts": {
    "test": "node clean && npx rollup -c rollup.config.js && jest && node examples/example.js && node addExports.js",
    "build": "npm run test",
    "safe-publish": "npm test && npm publish"
  },
  "repository": {
    "type": "git",
    "url": "git+https://github.com/tamb/object-bystring.git"
  },
  "keywords": [
    "object",
    "bystring",
    "string",
    "utility",
    "mutable"
  ],
  "author": "tamb <tsaporito@fastmail.com>",
  "license": "MIT",
  "bugs": {
    "url": "https://github.com/tamb/object-bystring/issues"
  },
  "files": [
    "LICENSE",
    "README.md",
    "dist"
  ],
  "types": "dist/index.d.ts",
  "homepage": "https://github.com/tamb/object-bystring#readme",
  "devDependencies": {
    "@rollup/plugin-babel": "^5.0.2",
    "husky": "^4.2.5",
    "jest": "^26.0.1",
    "prettier": "^2.0.5",
    "pretty-quick": "^2.0.1",
    "rimraf": "^3.0.2",
    "rollup": "^2.11.2",
    "rollup-plugin-terser": "^6.1.0",
    "rollup-plugin-typescript2": "^0.27.1",
    "typescript": "^3.9.3"
  },
  "husky": {
    "hooks": {
      "pre-commit": "pretty-quick --staged"
    }
  }
}

plugin output with verbosity 3

[agilgur5]

I'm not totally sure, but it might not work without a tsconfig.json, the TS compiler uses include: or files: to determine what to generate, so there might be an issue there.

[tamb]

I'll definitely try that and update

[hellomrbigshot]

tsconfig.json

{
  "compilerOptions"：{
    // ...
    "declaration": true
  }
}