Deno.inspect

inspect

• inspect(value: unknown, options?: InspectOptions): string

• • 定义在 lib.deno.ns.d.ts:2877

  不稳定：字符串输出的确切形式仍在考虑，可能会更改。

  UNSTABLE*: The exact form of the string output is under consideration and may change.

  将输入转换为与 console.log() 打印格式相同的字符串。

  Converts the input into a string that has the same format as printed by console.log().

   const obj = {};
   obj.propA = 10;
   obj.propB = "hello"
   const objAsString = Deno.inspect(obj); //{ propA: 10, propB: "hello" }
   console.log(obj);  // 输出与 objAsString 相同的值，例如: { propA: 10, propB: "hello" }
  

  你还可以通过对象上的 Deno.symbols.customInspect 函数 注册自定义的 inspect function，以控制和自定义输出。

  You can also register custom inspect functions, via the customInspect Deno symbol on objects, to control and customize the output.

   class A {
     x = 10;
     y = "hello";
     [Deno.symbols.customInspect](): string {
       return "x=" + this.x + ", y=" + this.y;
     }
   }
  

   const inStringFormat = Deno.inspect(new A()); //"x=10, y=hello"
   console.log(inStringFormat);  // 输出 "x=10, y=hello"
  

  同时还提供了一些输出选项。

  Finally, a number of output options are also available.

   const out = Deno.inspect(obj, {showHidden: true, depth: 4, colors: true, indentLevel: 2});
  

参数

-   ##### value: unknown

-   ##### Optional options: [InspectOptions](interfaces/deno.inspectoptions.html)

返回 string