How to stop ReSharper removing spaces in object initializer

For R# 7, I can get this to vary by going to¹

ReSharper | Options | Code Editing | C# | Formatting Style | Spaces

and toggling

Other | Within single-line initializer braces

the example for which is

int[] x = new int[] {0, 1, 2};

versus

int[] x = new int[] { 0, 1, 2 };

Although the example is of array initialization, it also appears to control object initialization.

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¹_{In R# 5, "Code Editing" was "Languages".}

If you are using an .editorconfig file, you can control this behaviour by adding:

space_within_single_line_array_initializer_braces = true

See also the official resharper documentation on supported .editorconfig entries. These typically let you customize everything you could customize from the formatting styles menu for all of Jetbrains' IDEs.