https://github.com/tidwall/sjson/blob/b279807a1bad9fa155988667d97a3d2fff4061b5/sjson.go#L470 go.mod refers to go1.14 errors.Is was added in 1.13 https://pkg.go.dev/errors#Is
sjson/sjson.go
Line 470 in b279807
go.mod refers to go1.14
errors.Is was added in 1.13
https://pkg.go.dev/errors#Is