Using --project switch incorrectly outputs to include base folder name

[bbugh]

Given this tsconfig.json

{
  "compilerOptions": {
    "outDir": "./dist",
  },
  "include": ["src/**/*.ts"]
}

When running npx sucrase -p ., it incorrectly outputs to dist/src instead of treating src as a base directory.

# ❌ it should not be this
/path/src/main.ts -> /path/dist/src/main.js

# ✅ it should be this
/path/src/main.ts -> /path/dist/main.js

Adding the rootDir configuration setting does not affect this

// No change
{
  "compilerOptions": {
    "rootDir": "./src",
    "outDir": "./dist",
  },
  "include": ["src/**/*.ts"]
}

And if I exclude "include", sucrase doesn't output anything.

{
  "compilerOptions": {
    "rootDir": "./src", // with or without this, doesn't matter
    "outDir": "./dist",
  },
  //"include": ["src/**/*.ts"]
}