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Luke Vo
Luke Vo
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ECMA 262 (2020) which I am testing on Edge Chromium 84 can execute the Optional Chaining operator without TypeScript transpiler:

// All result are undefined
const a = {};

console.log(a?.b);
console.log(a?.["b-foo-1"]);
console.log(a?.b?.());

// Note that the following statements throw exceptions:
a?.(); // TypeError: a is not a function
a?.b(); // TypeError: a?.b is not a function

CanIUse: Chrome 80+, Firefox 74+

ECMA 262 (2020) which I am testing on Edge Chromium 84 can execute the Optional Chaining operator without TypeScript transpiler:

// All result are undefined
const a = {};

console.log(a?.b);
console.log(a?.["b-foo-1"]);
console.log(a?.b?.());

// Note that the following statements throw exceptions:
a?.(); // TypeError: a is not a function
a?.b(); // TypeError: a?.b is not a function

ECMA 262 (2020) which I am testing on Edge Chromium 84 can execute the Optional Chaining operator without TypeScript transpiler:

// All result are undefined
const a = {};

console.log(a?.b);
console.log(a?.["b-foo-1"]);
console.log(a?.b?.());

// Note that the following statements throw exceptions:
a?.(); // TypeError: a is not a function
a?.b(); // TypeError: a?.b is not a function

CanIUse: Chrome 80+, Firefox 74+

Source Link
Luke Vo
Luke Vo
  • 20.6k
  • 24
  • 124
  • 222

ECMA 262 (2020) which I am testing on Edge Chromium 84 can execute the Optional Chaining operator without TypeScript transpiler:

// All result are undefined
const a = {};

console.log(a?.b);
console.log(a?.["b-foo-1"]);
console.log(a?.b?.());

// Note that the following statements throw exceptions:
a?.(); // TypeError: a is not a function
a?.b(); // TypeError: a?.b is not a function