🎨 Stylistic: this is a stylistic rule used by the formatting feature.

Enforce spacing around equal signs in entity selectors.

• (object) Root.
  • before: (number) the number of spaces before the equal sign.
  • after: (number) the number of spaces after the equal sign.

{
    "selectorEqualSpacing": { "before": 0, "after": 0 }
}

kill @e[type=!minecraft:player]

kill @e[type= !minecraft:player]
kill @e[type = !minecraft:player]

{
    "selectorEqualSpacing": { "before": 1, "after": 1 }
}

kill @e[type = !minecraft:player]

kill @e[type=!minecraft:player]
kill @e[type= !minecraft:player]

This rule was introduced in DHP 2.0.0.