fat arrow Unexpected token in the Class

[iterion-mikehit]

Hi, try this to obfuscatge with online obfuscator. Any idea why error is raising?
class alfaTest{
constructor() {
let test = {}
}
setScreen = () => {
console.log('test');
}
}

Raise an error

Error: ERROR at line 5: Unexpected token (5:14)

...setScreen = () => {...

[sanex3339]

This is because of class properties that are currently on stage 3 of ECMA proposal and does not support by acorn and escodegen

[BlackYuzia]

@iterion-mikehit you should use methods, like:

class Kruzya {
 // ...
 
 test() {console.log("test")}
}

second way:

class Kruzya {
constructor() {
  this.setScreen = () => {console.log("test")}; // typo but should work
}
}

[iterion-mikehit]

Thank you I have a more complex JS code unfortunately rewrite it

[sanex3339]

Now this proposal in stage 4. Acorn just has added the support of this feature, but estraverse/escodegen still does not support it. I'll keep this issue open.

[sanex3339]

I forked estraverse too, but as the first step we have to wait until these PRs will be merged:
eslint/espree#486
eslint/eslint-scope#69

After that, I'll try to implement this feature in my fork of escodegen

[sanex3339]

PR with the support of this feature in my fork of escodegen
javascript-obfuscator/escodegen#3

[sanex3339]

WIP PR to the obfuscator:
#916

Still need to wait until
eslint/espree#486
eslint/eslint-scope#69

will be finished.

[Bdethloff]

I'm having the same problem.

I'm trying to obfuscate several classes all of which have arrow function methods. In each file, the obfuscator reaches the first arrow function and throws this Error: ERROR at line 24: Unexpected token (24:18)

An example of the smallest class

import { xInit, yInit } from "../functions/displaySVG.js";
import { createSvgText} from "../functions/drawSVG.js";
import { currentUser } from "../script.js";

export default class Label {
    constructor(text, position) {
        this.text = text;
        this.coordinates = {x: xInit, y: yInit};
        this.position = position;
    }

    drawLabel = () => {
        let matrixGroup = document.getElementById("matrixGroup");
        let label = createSvgText(
            this.text, 13, "#333639",
            this.coordinates.x, this.coordinates.y,
            `mapLabel labl-${this.position} draggable`
        );
        label.setAttribute("id", `labl-${this.position}`)
        label.setAttributeNS(null, "font-weight", "bold");
        label.setAttributeNS(null, "text-decoration", "underline");

        label.addEventListener("dblclick", currentUser.maps[0].deleteLabel);

        matrixGroup.appendChild(label);
    }

    setCoordinates = (x, y) => {
        this.coordinates.x = x;
        this.coordinates.y = y;
    }
}

Is the message here, we're waiting on...?
eslint/espree#486
eslint/eslint-scope#69

Sorry to hassle you

[sanex3339]

PR to the @types/estree
DefinitelyTyped/DefinitelyTyped#52832

[Bdethloff]

Any update on this?

[sanex3339]

I linked all related PR's. We have to wait until they all will be merged.

[regnaio]

Could we please merge the PR: #916?

Thank you!

[sanex3339]

This PR cannot be merged right now. Wait until eslint/eslint-scope#71 will be merged

[sanex3339]

Released as 2.18.0