prettier

318bf2cb - Partial support for TypeScript 3.8 (private fields, import/export type modifier) (#7631)

Partial support for TypeScript 3.8 (private fields, import/export type modifier) (#7631) * support TypeScript 3.8 * Update standard_private_fields.ts * improve tests for import/export type modifier * temporary hacks for private fields * comment out some tests, update snapshots * add changelog entry