joethephish/ts-check-bug-simpler.js

Last active December 19, 2019 15:18

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Default param causes ts-check to fail

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ts-check-bug-simpler.js

	const Obj = {
	x: 1,
	f: (y = Obj.x) => {}
	};

	Obj.x; // No definition found for 'x'

myfonj commented Dec 19, 2019

Exactly.
And amusingly, just accidentally caught this approach in that very editor:
https://www.typescriptlang.org/play/main-3.js

// whoa, no typescript and no compilation!

😄

(Sorry for spam, just had to share. Happy holidays :] )

OH, and BTW, if you are using modern-ish JS, you'll probably need do add few libs to "have" some features missing in current TS standard defs; for example in service worker I needed

/// <reference lib="webworker" />
// `Property 'finally' does not exist on type 'Promise<void>'`, introduced with es2018
/// <reference lib="es2018.promise" />

Author

joethephish commented Dec 19, 2019

Hah, nice! Happy holidays!

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