Format deletes spaces before preincrement

[mjbvz]

Copied from microsoft/vscode#85068

TypeScript Version: ^3.8.0-dev.20191116

Search Terms:

• format
• increment
• preincrement

repo

1. With following TS:

let a = 0;
if (a>0) ++a;

2. format

Expected

let a = 0;
if (a > 0) ++a;

Actual
Missing space:

let a = 0;
if (a > 0)++a;

[DanielRosenwasser]

Thanks @a-tarasyuk!