Exact version :明確指定版本,例如 "1.0.1" • Range :指定版本範圍,可⽤用 ">", ">=", "<", "<=" 及 "!=" ,以 "," 分隔 例如 ">= 1.0.1" 或 ">= 1.0, < 2.0" • Wildcard :萬⽤用字元,例如 "1.0.*" , 等同於 ">= 1.0, < 1.1" • Next Significant Release :下⼀一個重要版本; 即版本號倒數第⼆二位數字加 1 ,例如: "~1.2" ,等同於 ">= 1.2, < 2.0" ; "~1.3.1" ,等同於 ">= 1.3.1, < 1.4.0"