No member suggestions after class property definition without semicolon

[mjbvz]

From microsoft/vscode#69897

TypeScript Version: 3.4.0-rc

Search Terms:

• suggestion, suggest, completions

Code
For the javascript

// @ts-check

import React from 'react';

class X extends React.Component {
    x = 1
    comp
}

1. Trigger suggestions after comp

Expected behavior:
Suggestions for the react componentDid... methods returned

Actual behavior:
Global suggestions returned

If you add a semicolon after x = 1;, you get the correct suggestions:

// @ts-check

import React from 'react';

class X extends React.Component {
    x = 1
    comp
}

Playground Link:

Related Issues:

[Kingwl]

Related: #26896
Simply:

class Parent {
    protected shouldWork() {
        console.log();
    }
}

class Child extends Parent {
    x = () => 1
    /*1*/ //nothing
}

Seems caused contextToken is the NumericalLiteral 1 rather than the provided case, and the completion cannot find the container.

I‘m not sure why we do not findAncestor in tryGetObjectTypeDeclarationCompletionContainer? the performance？