alertでconsoleの内容が見たい

/* alertでconsoleの内容が見たい */
const main = () => {
  let buf: string = "";

  const p = (arg: any) => {
    if ("object" === typeof arg) {
      arg = JSON.stringify(arg);
    }
    buf += arg += "\n";
    console.log(arg);
  };

  const disp = () => {
    alert(buf);
  };

  const sub = () => {
    const a = { あ: "a", い: "i" };

    p('"hello" : ' + "hello");
    p("123 : " + 123);
    p("typeof a : " + typeof a);
    p("a : " + a);
    p(a);
  };

  sub();
  disp();
};
main();

/* alertでconsoleの内容が見たい */

const main = () => {

let buf: string = "";

const p = (arg: any) => {

if ("object" === typeof arg) {

arg = JSON.stringify(arg);

}

buf += arg += "\n";

console.log(arg);

};

const disp = () => {

alert(buf);

};

const sub = () => {

const a = { あ: "a", い: "i" };

p('"hello" : ' + "hello");

p("123 : " + 123);

p("typeof a : " + typeof a);

p("a : " + a);

p(a);

};

sub();

disp();

};

main();

"hello" : hello
123 : 123
typeof a : object
a : [object Object]
{"あ":"a","い":"i"}

"hello" : hello

123 : 123

typeof a : object

a : [object Object]

{"あ":"a","い":"i"}

https://www.typescriptlang.org/play/#code/PQKgBAhgNgpgTgF0OYMBjA9gOwM5toOwZBQxUE7tQGQZBoyMH0GQEQYwRgAodbBMAWwgEsMwBeMACgCUvAHxgA3vTBhYLAEYBXAGYAuMFgRwuAc15gARPoDc9KWCYawABz38IcbWogYAnsJ5jJ06RyUD9aHIAVjAoCPq8PHwILlYwaH722sJe3tJJegBSAMoA8gByAHQaWhjavi52DoImaQC+ZtKKfgDUfBltBgA6GMaN5pg4sIVQaNpVybVgdSZmFiwAJhxYNnxCohL90PAI-M01ZjOm0vPqCnK27p79pxB64mCAQgxq+hD6ADRgVC8cEUf9Vn4AHJ9AALGBQUYRNRAsAtAzgyFofQHNKA-QARgATABmMAvOFgbE41HedExOIJSD4gyEinxRKk6Tou4E+EQJnWOyk-7SLDnIRTJYrQX0I7sLiioA

alertでconsoleの内容が見たい

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