if err != nil snippet

go.json

{
  // Each snippet must have a name and body, but the prefix and description are optional.
  // The prefix is used to trigger the snippet, but when omitted then the name is used.
  // Use placeholders like $1, $2 or ${1:defaultValue} to define tab stops.
  // The $0 determines the final cursor position.
  // Placeholders with the same value are linked.
  "err check": {
    "prefix": "err",
    "body": ["if err != nil {", "$1", "}", "$0"],
    "description": "Checks for error"
  }
}