prettier

c1937cb1 - feat: add new parser `babel-ts` to parse TypeScript syntaxes via Babel (#6400)

feat: add new parser `babel-ts` to parse TypeScript syntaxes via Babel (#6400) * feat: add new parser `babel-ts` to parse TypeScript syntaxes via Babel * docs: document parser babel-ts * chore: enable babel-ts in markdown and worker.js * verify all TS tests against babel-ts except disabled by disableBabelTS * support for TSDeclareMethod; fix abstract properties and methods * fix embedded angular templates and styles * fix TSImportType * simplify babel options combinations * fix method decorators * fix ranges * work around loc inconsistencies for SequenceExpression * don't print trailing comma in type parameters (unsupported in TS < 3.3) * preserve quotes for class properties * align printing of single-parameter functions * fix comments in degenerate single-element unions and intersections * fix comments for methods * fix comments for mapped types * edit docs, change 'since' to 2.0.0 * add changelog * fix code sample on playground * update snapshots after rebase Co-authored-by: Georgii Dolzhykov <thorn.mailbox@gmail.com>