TS2376 doesn't comply with ECMAScript

[ghost]

Bug Report

🔎 Search Terms

First statement must be super

🕗 Version & Regression Information

• This is the behavior in every version I tried, and I reviewed the FAQ for entries about super calls in classes

⏯ Playground Link

Couldn't provide a link, TS playground wasn't working, I've opened microsoft/TypeScript-Website#1506

💻 Code

class T extends Number {
	x = 0; // use class instance field
	constructor(n: number) {
		const temp = n ** n; // do something
		super(temp); // not first statement
	}
};

console.log(new T(10).valueOf());

🙁 Actual behavior

TSC raises error TS2376, claiming that super calls must be the first statement in a class, if a class uses the class instance field.

🙂 Expected behavior

TSC removes the : number, and ends process.
Removing type annotations, this is otherwise perfectly valid ES.

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Possibly related to #6908

[RyanCavanaugh]

Duplicate #8277