Can't parse private members of classes

[JC3]

Even with the recommended ecmascript-proposals plugin, esdoc can't seem to understand private members of classes of any form, and says it "can't parse the following code". For example:

class ExampleClass {
    #o = {};
}

Fails to parse the #o. Likewise:

class ExampleClass {
    constructor () {
        this.#privateMethod();
    }
    #privateMethod () {
    }
}

Fails on the this.#privateMethod() call before it even gets to #privateMethod () {.