typescript crashes in watch mode when configuration changes

[SimonSiefke]

TypeScript Version: 3.9.0-dev.20200306

Search Terms: crashes in watch mode, noUnusedParameters, doneWithAffectedFile

Code

// index.ts
const fn = (a: string, b: string) => b

// tsconfig.json
{
  "compilerOptions": {
    "noUnusedParameters": true
  }
}

Expected behavior:
Start tsc in watch-mode (tsc -b -w). When changing noUnusedParameters from true to false in tsconfig.json, it shouldn't crash.

Actual behavior:
When changing noUnusedParameters from true to false, it crashes and the watcher terminates.

/tmp/tsbug/node_modules/typescript/lib/tsc.js:83917
            state.seenAffectedFiles.set(affected.resolvedPath, true);
                                    ^

TypeError: Cannot read property 'set' of undefined
    at doneWithAffectedFile (/tmp/tsbug/node_modules/typescript/lib/tsc.js:83917:37)
    at toAffectedFileEmitResult (/tmp/tsbug/node_modules/typescript/lib/tsc.js:83934:9)
    at emitNextAffectedFile (/tmp/tsbug/node_modules/typescript/lib/tsc.js:84157:20)
    at Object.emit (/tmp/tsbug/node_modules/typescript/lib/tsc.js:84171:49)
    at Object.emitFilesAndReportErrors (/tmp/tsbug/node_modules/typescript/lib/tsc.js:85406:23)
    at emit (/tmp/tsbug/node_modules/typescript/lib/tsc.js:86596:33)
    at executeSteps (/tmp/tsbug/node_modules/typescript/lib/tsc.js:86706:25)
    at Object.done (/tmp/tsbug/node_modules/typescript/lib/tsc.js:86541:13)
    at Timeout.buildNextInvalidatedProject [as _onTimeout] (/tmp/tsbug/node_modules/typescript/lib/tsc.js:87240:32)

Playground Link: None
Related Issues: #30201, #28433