Invalid `await` is generated in constructor when initializing field

[brianush1]

TypeScript Version: 3.7.x-dev.201xxxxx

Search Terms: invalid await in constructor

Code

async function bar() {
	return 2;
}

async function foo() {
	return new class {
		baz = await bar();
	};
}

Expected behavior:
Error, as await cannot be used in a constructor

Actual behavior:
Invalid JS code is generated, as a constructor using await bar(); is generated, and this is not allowed in JS

Playground Link: http://www.typescriptlang.org/play/?ts=3.8.0-dev.20191101&ssl=1&ssc=1&pln=2&pc=11#code/IYZwngdgxgBAZgV2gFwJYHsIwEbAE4AUAlDAN4BQAkHgKbIJ5YBMA3OQL7nmiSyIoYscdOmJkqteoxgQaAdxhQANqBDjKlXAC8YAXhjA5wVMhz5ibSuzbsgA

Related Issues: None

[fatcerberus]

In fact this is an outright syntax error in JavaScript; removing the await fixes the error below:

D:\temp>node -v
v13.0.1

D:\temp>node foo.js
D:\temp\foo.js:7
                baz = await bar();
                            ^^^

SyntaxError: Unexpected identifier
�[90m    at wrapSafe (internal/modules/cjs/loader.js:891:16)�[39m
�[90m    at Module._compile (internal/modules/cjs/loader.js:941:27)�[39m
�[90m    at Object.Module._extensions..js (internal/modules/cjs/loader.js:1011:10)�[39m
�[90m    at Module.load (internal/modules/cjs/loader.js:822:32)�[39m
�[90m    at Function.Module._load (internal/modules/cjs/loader.js:730:14)�[39m
�[90m    at Function.Module.runMain (internal/modules/cjs/loader.js:1051:12)�[39m
�[90m    at internal/main/run_main_module.js:16:11�[39m

(note: node.js v13 supports class fields)