function Deno.inspect
inspect(value: unknown,options?: InspectOptions,): string
Converts the input into a string that has the same format as printed by
console.log().
const obj = {
a: 10,
b: "hello",
};
const objAsString = Deno.inspect(obj); // { a: 10, b: "hello" }
console.log(obj); // prints same value as objAsString, e.g. { a: 10, b: "hello" }
A custom inspect functions can be registered on objects, via the symbol
Symbol.for("Deno.customInspect"), to control and customize the output
of inspect() or when using console logging:
class A {
x = 10;
y = "hello";
[Symbol.for("Deno.customInspect")]() {
return `x=${this.x}, y=${this.y}`;
}
}
const inStringFormat = Deno.inspect(new A()); // "x=10, y=hello"
console.log(inStringFormat); // prints "x=10, y=hello"
A depth can be specified by using the depth option:
Deno.inspect({a: {b: {c: {d: 'hello'}}}}, {depth: 2}); // { a: { b: [Object] } }
optional
options: InspectOptions
string