Method error

lib/node.js:146–157

(message, opts = {})

  }

  error(message, opts = {}) {
    if (this.source) {
      let { end, start } = this.rangeBy(opts)
      return this.source.input.error(
        message,
        { column: start.column, line: start.line },
        { column: end.column, line: end.line },
        opts
      )
    }
    return new CssSyntaxError(message)
  }

  getProxyProcessor() {
    return {