createWatchProgram has import ts from 'typescript' which requires esModuleInterop: true in the tsconfig of any dependent of typescript-estree.

Typescript doesn't actually have a default export, but a commonjs one. One of these syntaxes would work:

import * as ts from 'typescript'
// or
import ts = require('typescript')

Typescript's nightly user test suite exposed this problem, because it compiles prettier with allowJs/checkJs on, but not esModuleInterop.