just use json.Number

internal/common/types.go

@@ -4,7 +4,6 @@ package common
 
 import (
 	"fmt"
-	"strconv"
 	"strings"
 	"time"
 )
@@ -13,17 +12,8 @@ type (
 	// PyTimeStamp is a python-style long nano timestamp
 	PyTimestamp time.Time
 
-	// KeepZero is a special float that keeps the trailing zero on marshal
-	KeepZero float64
 )
 
-func (f KeepZero) MarshalJSON() ([]byte, error) {
-	if float64(f) == float64(int(f)) {
-		return []byte(strconv.FormatFloat(float64(f), 'f', 1, 32)), nil
-	}
-	return []byte(strconv.FormatFloat(float64(f), 'f', -1, 32)), nil
-}
-
 const PytTimeFormat = "2006-01-02T15:04:05.999999-07:00"
 
 func (t *PyTimestamp) MarshalJSON() ([]byte, error) {

pkg/auth/session.go

@@ -25,7 +25,7 @@ type RefreshToken struct {
 	ClientIcon            *string             `json:"client_icon"`
 	TokenType             TokenType           `json:"token_type"`
 	CreatedAt             *common.PyTimestamp `json:"created_at"`
-	AccessTokenExpiration common.KeepZero     `json:"access_token_expiration"`
+	AccessTokenExpiration json.Number         `json:"access_token_expiration"`
 	Token                 string              `json:"token"`
 	JWTKey                string              `json:"jwt_key"`
 	LastUsedAt            *common.PyTimestamp `json:"last_used_at"`